/* ========== CSS VARIABLES ========== */
:root {
    /* Clean, Professional Blue Theme */
    --primary-color: #2b42a7;
    --primary-hover: #352b93;
    --secondary-color: #7a67c8;
    --success-color: #16a34a;
    --danger-color: #dc2626;
    --warning-color: #ea580c;
    --info-color: #1908b2;
    
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --bg-light: #0f172a;
    --bg-white: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
}

/* ========== GLOBAL STYLES ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg-light);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: var(--transition);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ========== UPDATED NAVIGATION BAR STYLING ========== */

.navbar {
    background: var(--bg-white);
    padding: 0.8rem 2rem;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    gap: 1rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-logo i {
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    flex-wrap: nowrap;
    justify-content: center;
    flex: 1;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0.8rem;
    border-radius: 6px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.85rem;
    white-space: nowrap;
}

.nav-link i {
    font-size: 1rem;
    color: var(--text-secondary);
}

.nav-link:hover {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.nav-link:hover i {
    color: var(--primary-color);
}

.nav-link.active {
    background: var(--primary-color);
    color: white;
}

.nav-link.active i {
    color: white;
}

.theme-toggle {
  background: var(--bg-white);
  border: 2px solid var(--border-color);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: 0.3s ease;
  color: var(--text-primary);
  font-size: 1.1rem;
}

.theme-toggle:hover {
  transform: rotate(20deg) scale(1.1);
  border-color: var(--primary-color);
  color: var(--primary-color);
}


.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
}

/* ========== TABLET BREAKPOINT ========== */
@media (max-width: 1200px) {
    .nav-link {
        padding: 0.5rem 0.6rem;
        font-size: 0.8rem;
    }

    .nav-logo {
        font-size: 1.1rem;
    }

    .nav-logo i {
        font-size: 1.3rem;
    }
}

/* ========== MOBILE BREAKPOINT ========== */
@media (max-width: 968px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-md);
        transition: left 0.3s ease;
        align-items: flex-start;
        overflow-y: auto;
        gap: 0.5rem;
        flex-wrap: nowrap;
    }

    .nav-links.active {
        left: 0;
    }

    .mobile-menu-toggle {
        display: block;
        flex-shrink: 0;
    }

    .nav-link {
        width: 100%;
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }

    .theme-toggle {
        display: none;
    }
}

/* ========== MAIN CONTENT ========== */
.main-content {
    min-height: calc(100vh - 80px);
    padding: 2rem 0;
}

.page {
    display: none;
    animation: fadeIn 0.4s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.page-title i {
    color: var(--primary-color);
    font-size: 2rem;
}

.badge {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-left: 0.5rem;
}

/* ========== CARDS ========== */
.card {
    background: var(--bg-white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.card h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card h3 i {
    color: var(--primary-color);
    font-size: 1.3rem;
}

/* ========== HERO SECTION ========== */
.hero-section {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #2b42a7 0%, #8365d5 100%);
    border-radius: 16px;
    margin: 0 2rem 3rem;
    box-shadow: var(--shadow-xl);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: white;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.95);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-buttons .btn {
    justify-content: center;
    text-align: center;
    white-space: nowrap;
}

/* ========== FEATURES GRID ========== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.feature-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: var(--text-primary);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    justify-content: center;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ========== DAILY CHALLENGE ========== */
.daily-challenge {
    text-align: center;
    background: linear-gradient(135deg, #5cb0c9 0%, #0e83be 100%);
    color: white;
    box-shadow: var(--shadow-xl);
    border: none;
    padding: 2rem;
    border-radius: 18px;
    position: relative;
    overflow: hidden;
}

/* Shine animation */
.daily-challenge::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(255, 255, 255, 0.15),
        transparent
    );
    animation: dailyShimmer 4s infinite;
    z-index: 1;
}

@keyframes dailyShimmer {
    0% { transform: translate(-100%, -100%) rotate(45deg); }
    100% { transform: translate(100%, 100%) rotate(45deg); }
}

/* Floating Icons inside the card */
.daily-floating-icons {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.df-icon {
    position: absolute;
    font-size: 32px;
    opacity: 0.35;
    animation: dfFloat 4s ease-in-out infinite;
}

.df-icon:nth-child(1) { top: 12%; left: 10%; animation-delay: 0s; }
.df-icon:nth-child(2) { top: 65%; right: 12%; animation-delay: 1s; }
.df-icon:nth-child(3) { bottom: 20%; left: 22%; animation-delay: 2s; }
.df-icon:nth-child(4) { bottom: 40%; right: 20%; animation-delay: 2.7s; }

@keyframes dfFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(12deg); }
}

/* Text */
.daily-challenge h3,
.daily-challenge p {
    position: relative;
    z-index: 2;
}

.daily-challenge h3 {
    font-size: 1.7rem;
    font-weight: 800;
    text-shadow: 2px 2px 5px rgba(0,0,0,0.25);
}

.daily-challenge p {
    font-size: 1.1rem;
    margin-top: 8px;
}

/* Button */
.daily-challenge .btn {
    margin: 1rem 0;
    background: white;
    color: var(--primary-color);
    font-weight: 700;
    position: relative;
    z-index: 2;
    border-radius: 12px;
    transition: 0.3s ease;
}

.daily-challenge .btn:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-3px);
}

/* Streak counter */
.streak-counter {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: 1rem;
    position: relative;
    z-index: 2;
}
/* ========== BUTTONS ========== */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: inherit;
}

.btn i {
    font-size: 1.1rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--text-secondary);
    color: white;
}

.btn-secondary:hover {
    background: var(--text-primary);
    transform: translateY(-2px);
}

.btn-success {
    background: var(--success-color);
    color: white;
}

.btn-success:hover {
    background: #15803d;
    transform: translateY(-2px);
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #b91c1c;
    transform: translateY(-2px);
}

.btn-large {
    padding: 1rem 3rem;
    font-size: 1.2rem;
    border-radius: 50px;
    box-shadow: var(--shadow-md);
}

.btn-icon {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
    padding: 0.5rem;
}

.btn-icon:hover {
    transform: scale(1.2);
    color: var(--danger-color);
}

/* ========== QUIZ SECTION ========== */
.quiz-setup,
.mock-setup,
.flashcard-setup {
    text-align: center;
}

.setup-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.setup-item {
    text-align: left;
}

.setup-item label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.select-input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-white);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.select-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.5rem;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 400;
    color: var(--text-primary);
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

/* ========== QUIZ CONTAINER ========== */
.quiz-container {
    max-width: 800px;
    margin: 0 auto;
}

.quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.quiz-progress {
    flex: 1;
    min-width: 200px;
}

.quiz-progress > span {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.progress-bar {
    background: var(--bg-light);
    height: 8px;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 4px;
    transition: width 0.5s ease;
}

.quiz-score {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.quiz-question {
    margin-bottom: 2rem;
}

.question-badge {
    background: var(--primary-color);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-block;
    margin-bottom: 1rem;
}

.quiz-question h3 {
    color: var(--text-primary);
    font-size: 1.3rem;
    line-height: 1.6;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.quiz-option {
    background: var(--bg-white);
    padding: 1.25rem;
    border-radius: 10px;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-primary);
    font-size: 1rem;
}

.quiz-option:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.quiz-option.selected {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
}

.quiz-option.correct {
    border-color: var(--success-color);
    background: rgba(22, 163, 74, 0.1);
}

.quiz-option.wrong {
    border-color: var(--danger-color);
    background: rgba(220, 38, 38, 0.1);
}

.option-letter {
    background: var(--primary-color);
    color: white;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.quiz-option.correct .option-letter {
    background: var(--success-color);
}

.quiz-option.wrong .option-letter {
    background: var(--danger-color);
}

.quiz-feedback {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary-color);
}

.quiz-feedback.correct {
    border-left-color: var(--success-color);
    background: rgba(22, 163, 74, 0.1);
}

.quiz-feedback.wrong {
    border-left-color: var(--danger-color);
    background: rgba(220, 38, 38, 0.1);
}

.quiz-feedback h4 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.quiz-actions,
.mock-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========== QUIZ RESULTS ========== */
.quiz-results {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.results-header {
    margin-bottom: 2rem;
}

.results-icon {
    font-size: 4rem;
    color: var(--warning-color);
    margin-bottom: 1rem;
}

.results-header h2 {
    color: var(--text-primary);
    font-size: 2rem;
}

.results-score {
    margin-bottom: 2rem;
}

.score-circle {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: 800;
    margin: 0 auto 1rem;
    box-shadow: var(--shadow-lg);
}

.results-score p {
    font-size: 1.2rem;
    color: var(--text-primary);
    font-weight: 600;
}

.results-stats {
    display: flex;
    justify-content: space-around;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.stat-item i {
    font-size: 2rem;
}

.stat-item i.fa-check-circle {
    color: var(--success-color);
}

.stat-item i.fa-times-circle {
    color: var(--danger-color);
}

.stat-item i.fa-clock {
    color: var(--info-color);
}

.stat-item span {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.results-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========== SEARCH & FILTER ========== */
.search-filter {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 250px;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-white);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ========== PRACTICE LIST ========== */
.practice-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.practice-item {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.practice-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.practice-item-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.practice-question {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

.practice-answer {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: 0.5rem;
    display: none;
}

.practice-answer.show {
    display: block;
}

/* ========== FLASHCARDS ========== */
.flashcard-counter {
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2rem;
}

.flashcard {
    max-width: 600px;
    height: 400px;
    margin: 0 auto 2rem;
    perspective: 1000px;
    cursor: pointer;
}

.flashcard-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.flashcard.flipped .flashcard-inner {
    transform: rotateY(180deg);
}

.flashcard-front,
.flashcard-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 12px;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-color);
}

.flashcard-front {
    background: var(--primary-color);
    color: white;
}

.flashcard-back {
    background: var(--bg-white);
    color: var(--text-primary);
    transform: rotateY(180deg);
}

.card-label {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.flashcard-front p,
.flashcard-back p {
    font-size: 1.3rem;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.flip-hint {
    font-size: 0.9rem;
    opacity: 0.7;
    margin-top: auto;
}

.flashcard-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    max-width: 600px;
    margin: 0 auto;
}

.flashcard-controls .btn {
    flex: 1;
}

.flashcard-setup {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px; /* 👈 adjust this value to control the space */
}



/* ========== MOCK TEST ========== */
.mock-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.timer {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--danger-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.timer i {
    font-size: 1.5rem;
}

.mock-progress {
    font-weight: 600;
    color: var(--text-primary);
}

/* ========== FAVORITES ========== */
.favorites-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.favorite-item {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.favorite-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.favorite-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.favorite-question {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

.favorite-answer {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: 0.5rem;
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 5rem;
    margin-bottom: 1rem;
    opacity: 0.3;
    color: var(--text-muted);
}

.empty-state h3 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

/* ========== ANALYTICS ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-success {
    color: var(--success-color);
}

.stat-warning {
    color: var(--warning-color);
}

.stat-info {
    color: var(--info-color);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1rem;
}

.topics-progress {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 1rem;
}

.topic-progress-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.progress-topic {
    color: var(--text-primary);
    font-weight: 600;
}

.progress-count {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ========== ANALYTICS CHART FIX ========== */
/* FIND THIS IN YOUR style.css AND REPLACE IT */
/* Search for: .chart-container */

/* ========== PERFORMANCE CHART FIX ========== */
.chart-container {
    position: relative !important;
    width: 100% !important;
    max-width: 450px !important;
    height: 300px !important;
    margin: 2rem auto !important;
    padding: 1rem !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

#performanceChart {
    max-width: 100% !important;
    max-height: 100% !important;
    width: 100% !important;
    height: 100% !important;
}

/* ========== TABLET (768px) ========== */
@media (max-width: 768px) {
    .chart-container {
        max-width: 100% !important;
        height: 280px !important;
        margin: 1.5rem auto !important;
        padding: 1rem !important;
    }
}

/* ========== MOBILE (480px) ========== */
@media (max-width: 480px) {
    .chart-container {
        max-width: 100% !important;
        height: 250px !important;
        margin: 1.5rem 0 !important;
        padding: 0.75rem !important;
    }
}

/* ========== EXTRA SMALL (360px) ========== */
@media (max-width: 360px) {
    .chart-container {
        height: 220px !important;
        padding: 0.5rem !important;
    }
}

/* ========== RESOURCES (PDF) ========== */
.pdf-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.pdf-option {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.pdf-option:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.pdf-option h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.pdf-option p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.pdf-option .select-input {
    margin-bottom: 1rem;
}

/* ========== SETTINGS ========== */
.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.setting-item:last-child {
    border-bottom: none;
}

.setting-info {
    display: flex;
    align-items: start;
    gap: 1rem;
    flex: 1;
}

.setting-info i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 0.25rem;
}

.setting-info strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.setting-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Toggle Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: 0.4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: 0.4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* ========== FOOTER ========== */
.footer {
    background: var(--bg-white);
    padding: 2rem;
    margin-top: 4rem;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-content p {
    color: var(--text-secondary);
    margin: 0;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* ========== RESPONSIVE DESIGN ========== */
@media (max-width: 968px) {
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--bg-white);
        flex-direction: column;
        padding: 2rem;
        box-shadow: var(--shadow-md);
        transition: left 0.3s ease;
        align-items: flex-start;
        overflow-y: auto;
    }

    .nav-links.active {
        left: 0;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .features-grid,
    .pdf-options {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .quiz-header,
    .mock-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .flashcard {
        height: 350px;
    }

    .flashcard-front p,
    .flashcard-back p {
        font-size: 1.1rem;
    }
}

@media (max-width: 640px) {
    .navbar {
        padding: 1rem;
    }

    .container {
        padding: 0 1rem;
    }

    .hero-section {
        padding: 2rem 1rem;
        margin: 0 1rem 2rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .page-title {
        font-size: 1.5rem;
    }

    .card {
        padding: 1.5rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .stat-value {
        font-size: 2rem;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .search-filter {
        flex-direction: column;
    }

    .search-filter .btn,
    .search-filter .select-input {
        width: 100%;
    }

    .quiz-actions,
    .mock-actions,
    .results-actions,
    .flashcard-controls {
        flex-direction: column;
        width: 100%;
    }

    .quiz-actions .btn,
    .mock-actions .btn,
    .results-actions .btn,
    .flashcard-controls .btn {
        width: 100%;
    }

    .flashcard {
        height: 300px;
    }

    .flashcard-front,
    .flashcard-back {
        padding: 2rem;
    }

    .score-circle {
        width: 120px;
        height: 120px;
        font-size: 2.5rem;
    }
}

/* ========== SCROLLBAR STYLING ========== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-hover);
}

/* ========== PRINT STYLES ========== */
@media print {
    .navbar, .footer, .btn, .nav-links, .theme-toggle { 
        display: none !important; 
    }
    .page { 
        display: block !important; 
        page-break-after: always; 
    }
    body { 
        background: white !important; 
    }
    .card { 
        box-shadow: none !important; 
        border: 1px solid #ddd; 
    }
}

/* ========== ACCESSIBILITY ========== */
.keyboard-nav *:focus {
    outline: 3px solid var(--primary-color) !important;
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========== ANIMATIONS ========== */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.btn-large:hover {
    animation: pulse 1s ease-in-out infinite;
}

/* ========== LOADING STATE ========== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========== UTILITIES ========== */
.text-center { text-align: center; }
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--text-secondary); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-warning { color: var(--warning-color); }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

.hidden { display: none; }
.visible { display: block; }

/* ========== THEME SPECIFIC ENHANCEMENTS ========== */
[data-theme="dark"] .feature-card,
[data-theme="dark"] .card,
[data-theme="dark"] .stat-card {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .navbar,
[data-theme="dark"] .footer {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* Make sure icons are always visible */
.nav-link i,
.page-title i,
.card h3 i,
.feature-icon,
.stat-item i,
.setting-info i,
.timer i,
.btn i {
    opacity: 1;
    font-weight: 600;
}

/* Enhanced focus states for better accessibility */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
}

/* Selection color */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}



/* ========== CLOSE QUIZ BUTTON ========== */
.close-quiz-btn {
    background: #dc2626;
    border: none;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    margin-left: auto;
}

.close-quiz-btn:hover {
    background: #b91c1c;
    transform: scale(1.1);
}

.close-quiz-btn:active {
    transform: scale(0.95);
}





/* ========== SIMPLE REVIEW STYLING ========== */

.review-container {
    max-width: 800px;
    margin: 0 auto;
}

#reviewContent {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.simple-review-item {
    background: var(--bg-white);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.simple-review-item.correct {
    border-left-color: var(--success-color);
    background: rgba(22, 163, 74, 0.05);
}

.simple-review-item.wrong {
    border-left-color: var(--danger-color);
    background: rgba(220, 38, 38, 0.05);
}

.review-q-number {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.simple-review-item.correct .review-q-number {
    color: var(--success-color);
}

.simple-review-item.wrong .review-q-number {
    color: var(--danger-color);
}

.review-q-text {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-weight: 500;
    line-height: 1.5;
}

.review-q-your-answer,
.review-q-correct-answer,
.review-q-explanation {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    padding: 0.75rem;
    background: var(--bg-light);
    border-radius: 6px;
}

.review-q-correct-answer {
    color: var(--success-color);
    background: rgba(22, 163, 74, 0.1);
    border-left: 3px solid var(--success-color);
    padding-left: 1rem;
}

.review-q-explanation strong {
    color: var(--text-primary);
}




/* ========== CONTACT MODAL STYLES ========== */

/* Modal container - hidden by default */
.contact-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.contact-modal.active {
    display: flex;
}

/* Backdrop with blur effect */
.contact-modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: -1;
    animation: fadeInBackdrop 0.3s ease;
}

@keyframes fadeInBackdrop {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Modal container box */
.contact-modal-container {
    background: var(--bg-white);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    z-index: 2001;
    animation: slideInModal 0.4s ease;
    border: 1px solid var(--border-color);
}

@keyframes slideInModal {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Close button */
.contact-modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-primary);
    font-size: 1.2rem;
    z-index: 2002;
}

.contact-modal-close:hover {
    background: #dc2626;
    color: white;
    border-color: #dc2626;
    transform: rotate(90deg);
}

/* Modal header */
.contact-modal-header {
    padding: 2rem 2rem 1rem;
    border-bottom: 2px solid var(--border-color);
    text-align: center;
}

.contact-modal-header h2 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.contact-modal-header h2 i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

/* Contact form */
.contact-form {
    padding: 2rem;
}

/* Form group */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.form-group label span {
    color: #dc2626;
}

/* Input fields */
.contact-input,
.contact-textarea,
.contact-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-white);
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.contact-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M10.293 3.293L6 7.586 1.707 3.293A1 1 0 00.293 4.707l5 5a1 1 0 001.414 0l5-5a1 1 0 10-1.414-1.414z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 12px;
    padding-right: 2.5rem;
}

.contact-input::placeholder,
.contact-textarea::placeholder {
    color: var(--text-muted);
}

.contact-input:focus,
.contact-textarea:focus,
.contact-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: var(--bg-light);
}

.contact-textarea {
    min-height: 120px;
    resize: vertical;
}

/* Custom subject input (shown when "Other" is selected) */
.custom-subject-input {
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Character count */
.char-count {
    display: block;
    color: var(--text-muted);
    margin-top: 0.25rem;
    font-size: 0.85rem;
}

/* Form actions */
.contact-form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.contact-btn-submit,
.contact-btn-cancel {
    flex: 1;
    min-width: 140px;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
}

.contact-btn-submit {
    background: var(--primary-color);
    color: white;
}

.contact-btn-submit:hover:not(:disabled) {
    background: #c00db7;
    transform: translateY(-2px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.contact-btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.contact-btn-cancel {
    background: var(--bg-light);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.contact-btn-cancel:hover {
    background: var(--border-color);
    border-color: var(--text-secondary);
}

/* Form message (inline) */
.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
    animation: slideInMessage 0.3s ease;
}

@keyframes slideInMessage {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-message.success {
    background: rgba(22, 163, 74, 0.1);
    color: #16a34a;
    border: 2px solid #16a34a;
}

.form-message.error {
    background: rgba(220, 38, 38, 0.1);
    color: #dc2626;
    border: 2px solid #dc2626;
}

/* ========== SUCCESS MODAL STYLES ========== */

.success-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3000;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.success-modal.active {
    display: flex;
}

.success-modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    animation: fadeInBackdrop 0.4s ease;
}

.success-modal-container {
    background: var(--bg-white);
    border-radius: 20px;
    padding: 3rem 2rem 2rem;
    max-width: 450px;
    width: 90%;
    text-align: center;
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.4);
    position: relative;
    z-index: 3001;
    animation: successSlideIn 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border: 1px solid var(--border-color);
}

@keyframes successSlideIn {
    from {
        opacity: 0;
        transform: scale(0.5) translateY(-50px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Success checkmark animation */
.success-animation {
    margin-bottom: 2rem;
}

.success-checkmark {
    width: 100px;
    height: 100px;
    margin: 0 auto;
    position: relative;
}

.check-icon {
    width: 100px;
    height: 100px;
    position: relative;
    border-radius: 50%;
    box-sizing: content-box;
    border: 4px solid #16a34a;
    animation: fillCircle 0.4s ease-in-out 0.4s forwards, scaleIn 0.5s ease-in-out;
}

@keyframes fillCircle {
    0% {
        border: 4px solid transparent;
        border-top-color: #16a34a;
        transform: rotate(0deg);
    }
    100% {
        border: 4px solid #16a34a;
        transform: rotate(360deg);
    }
}

.icon-line {
    height: 5px;
    background-color: #16a34a;
    display: block;
    border-radius: 2px;
    position: absolute;
    z-index: 10;
}

/* ✅ Fixed Tick Alignment */
.line-tip {
    top: 54px;
    left: 20px;
    width: 25px;
    transform: rotate(45deg);
    animation: tipInPlace 0.6s ease-in-out 0.2s forwards;
    opacity: 0;
}

@keyframes tipInPlace {
    0% {
        width: 0;
        left: 15px;
        top: 55px;
        opacity: 0;
    }
    100% {
        width: 25px;
        left: 20px;
        top: 54px;
        opacity: 1;
    }
}

.line-long {
    top: 40px;
    right: 16px;
    width: 47px;
    transform: rotate(-45deg);
    animation: longInPlace 0.6s ease-in-out 0.35s forwards;
    opacity: 0;
}

@keyframes longInPlace {
    0% {
        width: 0;
        right: 46px;
        top: 65px;
        opacity: 0;
    }
    100% {
        width: 47px;
        right: 16px;
        top: 40px;
        opacity: 1;
    }
}


.icon-circle {
    top: -4px;
    left: -4px;
    z-index: 10;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    position: absolute;
    box-sizing: content-box;
    border: 4px solid rgba(22, 163, 74, 0.2);
}

.icon-fix {
    top: 8px;
    width: 5px;
    left: 26px;
    z-index: 1;
    height: 85px;
    position: absolute;
    transform: rotate(-45deg);
    background-color: var(--bg-white);
}

/* Success text */
.success-title {
    color: var(--text-primary);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    animation: fadeInUp 0.6s ease 0.8s;
    animation-fill-mode: forwards;
    opacity: 0;
}

.success-message {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    animation: fadeInUp 0.6s ease 1s;
    animation-fill-mode: forwards;
    opacity: 0;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Success button */
.success-btn {
    background: linear-gradient(135deg, #16a34a 0%, #15803d 100%);
    color: white;
    border: none;
    padding: 0.9rem 2.5rem;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 4px 15px rgba(22, 163, 74, 0.3);
    animation: fadeInUp 0.6s ease 1.2s;
    animation-fill-mode: forwards;
    opacity: 0;
}

.success-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(22, 163, 74, 0.4);
}

.success-btn:active {
    transform: translateY(-1px);
}

/* ========== MOBILE RESPONSIVE ========== */

@media (max-width: 768px) {
    .contact-modal-container {
        max-width: 90%;
        max-height: 85vh;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .contact-input,
    .contact-textarea,
    .contact-select {
        font-size: 16px; /* Prevents zoom on iOS */
    }

    .contact-form-actions {
        flex-direction: column-reverse;
    }

    .contact-btn-submit,
    .contact-btn-cancel {
        min-width: 100%;
    }

    .success-modal-container {
        padding: 2.5rem 1.5rem 1.5rem;
    }

    .success-checkmark {
        width: 80px;
        height: 80px;
    }

    .check-icon {
        width: 80px;
        height: 80px;
    }

    .success-title {
        font-size: 1.5rem;
    }

    .success-message {
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .contact-modal-container {
        max-width: 100%;
    }

    .contact-form {
        padding: 1rem;
    }

    .success-modal-container {
        padding: 2rem 1rem;
    }
}

/* ========== PREVENT SCROLLING WHEN MODAL IS OPEN ========== */
body.contact-modal-open {
    overflow: hidden;
}

/* ========== DARK MODE SUPPORT ========== */
[data-theme="dark"] .contact-modal-container,
[data-theme="dark"] .success-modal-container {
    background: var(--bg-white);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
}

[data-theme="dark"] .icon-fix {
    background-color: var(--bg-white);
}


/* ========== PROFILE PAGE STYLES ========== */

.profile-page-header {
    text-align: center;
    margin-bottom: 2rem;
    animation: fadeInDown 0.6s ease;
}

/* Profile Layout */
.profile-layout {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 2rem;
    animation: fadeIn 0.8s ease;
}

/* Profile Sidebar */
.profile-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.profile-card {
    text-align: center;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 3rem;
    color: rgb(8, 43, 119);
    font-weight: 700;
    box-shadow: var(--shadow-lg);
    position: relative;
    cursor: pointer;
    transition: var(--transition);
}

.profile-avatar:hover {
    transform: scale(1.05);
}

.avatar-edit {
    position: absolute;
    bottom: 5px;
    right: 5px;
    background: rgb(255, 255, 255);
    width: 28px;
    height: 27px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    color: var(--primary-color);
    font-size: 0.9rem;
    transition: var(--transition);
}

.avatar-edit:hover {
    transform: scale(1.1);
}

.profile-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.profile-email {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.profile-joined {
    color: var(--text-muted);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Stats List */
.profile-stats-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
}

.profile-stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.profile-stat-item:last-child {
    border-bottom: none;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stat-value {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* Achievements */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 1rem;
}

.achievement-badge {
    aspect-ratio: 1;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    padding: 0.75rem;
    text-align: center;
    border: 2px solid var(--border-color);
    background: var(--bg-light);
}

.achievement-badge.unlocked {
    background: linear-gradient(135deg, rgba(234, 88, 12, 0.1) 0%, rgba(234, 88, 12, 0.05) 100%);
    border-color: var(--warning-color);
    opacity: 1;
}

.achievement-badge.locked {
    background: var(--bg-light);
    border-color: var(--border-color);
    opacity: 0.5;
}

.achievement-badge:hover {
    transform: scale(1.05);
}

.achievement-badge i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.achievement-badge.unlocked i {
    color: var(--warning-color);
}

.achievement-badge.locked i {
    color: var(--text-muted);
}

.achievement-name {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Profile Content */
.profile-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Study Streak */
.streak-display {
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    color: white;
    margin-top: 1rem;
}

.streak-number {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.streak-label {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Topic Progress */
.topic-progress-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.topic-progress-item {
    background: var(--bg-light);
    padding: 1rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.topic-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.topic-name {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.topic-percentage {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.1rem;
}

/* Learning Goals */
.goals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.goal-card {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 12px;
    border: 2px solid var(--border-color);
    transition: var(--transition);
}

.goal-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.goal-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.goal-title {
    font-weight: 600;
    color: var(--text-primary);
}

.goal-status {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.goal-status.active {
    background: rgba(22, 163, 74, 0.1);
    color: var(--success-color);
}

.goal-status.pending {
    background: rgba(234, 88, 12, 0.1);
    color: var(--warning-color);
}

.goal-progress {
    margin-top: 0.5rem;
}

.goal-progress-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

/* Activity List */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.activity-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-light);
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.activity-content {
    flex: 1;
}

.activity-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.activity-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.activity-time {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

/* Profile Settings */
.profile-settings-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

/* Edit Profile Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.modal.active {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.profile-modal-content {
    position: relative;
    background: var(--bg-white);
    border-radius: 16px;
    padding: 2rem;
    max-width: 500px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease;
    z-index: 2001;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(50px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    color: var(--text-primary);
    font-size: 1.5rem;
    margin: 0;
}

.close-modal {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    padding: 0.5rem;
}

.close-modal:hover {
    color: var(--danger-color);
    transform: rotate(90deg);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-light);
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
    transition: var(--transition);
    font-size: 1rem;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.modal-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.modal-actions .btn {
    flex: 1;
}

/* Animations */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive Design */
@media (max-width: 968px) {
    .profile-layout {
        grid-template-columns: 1fr;
    }

    .achievements-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .goals-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .profile-sidebar {
        gap: 1rem;
    }

    .achievements-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.75rem;
    }

    .goals-grid {
        grid-template-columns: 1fr;
    }

    .profile-content {
        gap: 1rem;
    }

    .card {
        padding: 1.5rem;
    }
}

@media (max-width: 640px) {
    .profile-page-header {
        margin-bottom: 1rem;
    }

    .profile-avatar {
        width: 90px;
        height: 90px;
        font-size: 2rem;
        margin-bottom: 0.75rem;
    }

    .profile-name {
        font-size: 1.3rem;
    }

    .profile-email {
        font-size: 0.9rem;
    }

    .streak-display {
        padding: 1.5rem;
    }

    .streak-number {
        font-size: 2.5rem;
    }

    .streak-label {
        font-size: 1rem;
    }

    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }

    .achievement-badge {
        padding: 0.5rem;
    }

    .achievement-badge i {
        font-size: 1.5rem;
    }

    .achievement-name {
        font-size: 0.65rem;
    }

    .goals-grid {
        grid-template-columns: 1fr;
    }

    .goal-card {
        padding: 1rem;
    }

    .goal-title {
        font-size: 0.95rem;
    }

    .topic-progress-item {
        padding: 0.75rem;
    }

    .activity-item {
        padding: 0.75rem;
        gap: 0.75rem;
    }

    .activity-icon {
        width: 35px;
        height: 35px;
        font-size: 0.85rem;
    }

    .activity-title {
        font-size: 0.9rem;
    }

    .activity-desc {
        font-size: 0.85rem;
    }

    .profile-modal-content {
        max-width: 85%;
        max-height: 80vh;
        padding: 1.2rem;
        overflow-y: auto;
    }

    .modal-header {
        margin-bottom: 0.8rem;
    }

    .modal-header h2 {
        font-size: 1.3rem;
    }

    .form-group {
        margin-bottom: 0.7rem;
    }

    .form-group label {
        font-size: 0.9rem;
        margin-bottom: 0.3rem;
    }

    .form-input {
        padding: 0.6rem;
        font-size: 0.95rem;
    }

    .profile-pic-upload {
        padding: 0.8rem;
        gap: 0.8rem;
        margin-bottom: 0.7rem;
    }

    .profile-pic-preview {
        width: 75px;
        height: 75px;
        font-size: 1.8rem;
    }

    .profile-pic-controls {
        gap: 0.4rem;
    }

    .btn-small {
        padding: 0.5rem 0.9rem;
        font-size: 0.8rem;
    }

    .modal-actions {
        flex-direction: column;
        gap: 0.6rem;
    }

    .modal-actions .btn {
        width: 100%;
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .close-modal {
        font-size: 1.2rem;
    }

    .card {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }

    .page-title {
        font-size: 1.5rem;
    }
}


@media (max-width: 480px) {
    .profile-avatar {
        width: 80px;
        height: 80px;
        font-size: 1.75rem;
    }

    .profile-name {
        font-size: 1.1rem;
    }

    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.4rem;
    }

    .streak-number {
        font-size: 2rem;
    }

    .goal-card {
        padding: 0.75rem;
    }

    .goal-title {
        font-size: 0.9rem;
    }

    .profile-stats-list {
        gap: 0.25rem;
    }

    .profile-stat-item {
        padding: 0.5rem 0;
    }

    .stat-label {
        font-size: 0.85rem;
    }

    .stat-value {
        font-size: 1rem;
    }

    .profile-modal-content {
        max-width: 90%;
        max-height: 75vh;
        padding: 1rem;
    }

    .modal-header h2 {
        font-size: 1.2rem;
    }

    .form-group {
        margin-bottom: 0.6rem;
    }

    .profile-pic-upload {
        padding: 0.7rem;
        flex-direction: column;
        text-align: center;
    }

    .profile-pic-preview {
        width: 70px;
        height: 70px;
        font-size: 1.6rem;
        margin: 0 auto;
    }

    .profile-pic-controls {
        width: 100%;
        flex-direction: row;
    }

    .profile-pic-controls .btn {
        flex: 1;
        font-size: 0.75rem;
    }

    .card {
        padding: 0.75rem;
    }
}

/* ========== PROFILE PICTURE UPLOAD ========== */
.profile-pic-upload {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 10px;
    border: 2px dashed var(--border-color);
    margin-bottom: 1rem;
}

.profile-pic-preview {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    font-weight: 700;
    overflow: hidden;
    flex-shrink: 0;
}

.profile-pic-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-pic-controls {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    flex: 1;
}

.btn-small {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
}

@media (max-width: 640px) {
    .profile-pic-upload {
        flex-direction: column;
        text-align: center;
    }

    .profile-pic-controls {
        width: 100%;
    }

    .profile-pic-controls .btn {
        width: 100%;
    }

    .profile-pic-preview {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }
}



/* ========== PRIVACY & TERMS PAGES ========== */
.policy-card {
    max-width: 900px;
    margin: 0 auto;
}

.policy-content {
    line-height: 1.8;
}

.policy-content h3 {
    color: var(--primary-color);
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.policy-content h3:first-child {
    margin-top: 0;
}

.policy-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.policy-content ul {
    list-style: none;
    padding-left: 2rem;
    margin-bottom: 1rem;
}

.policy-content ul li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    position: relative;
}

.policy-content ul li:before {
    content: "✓";
    position: absolute;
    left: -1.5rem;
    color: var(--success-color);
    font-weight: 700;
}

.policy-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.policy-link:hover {
    text-decoration: underline;
    color: var(--secondary-color);
}

.last-updated {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}