/* ========================================
   VARIABLES & RESET
======================================== */
:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --secondary: #f97316;
    --text: #1f2937;
    --text-light: #6b7280;
    --bg: #ffffff;
    --bg-alt: #f9fafb;
    --border: #e5e7eb;
    --success: #10b981;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ========================================
   UTILITIES
======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--bg-alt);
    color: var(--text);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* ========================================
   HEADER
======================================== */
.header {
    position: sticky;
    top: 0;
    background-color: var(--bg);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
}

.nav-list {
    display: flex;
    gap: 8px;
}

.nav-list a {
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-list a:hover,
.nav-list a.active {
    background-color: var(--bg-alt);
    color: var(--primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ========================================
   HERO
======================================== */
.hero {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--bg-alt) 0%, var(--bg) 100%);
}

.hero h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--text);
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 30px;
}

/* ========================================
   FEATURES
======================================== */
.features {
    padding: 80px 0;
}

.features h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    padding: 30px;
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
    transition: all 0.3s ease;
}

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

.feature-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-light);
    font-size: 15px;
}

/* ========================================
   PHASES
======================================== */
.phases {
    padding: 80px 0;
    background-color: var(--bg-alt);
}

.phases h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
}

.phases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.phase-card {
    padding: 35px;
    background-color: var(--bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    position: relative;
}

.phase-number {
    position: absolute;
    top: -15px;
    left: 25px;
    width: 45px;
    height: 45px;
    background-color: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
}

.phase-card h3 {
    font-size: 22px;
    margin-bottom: 12px;
    margin-top: 10px;
}

.phase-card p {
    color: var(--text-light);
    font-size: 15px;
    margin-bottom: 15px;
}

.phase-tag {
    display: inline-block;
    padding: 5px 12px;
    background-color: var(--bg-alt);
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-light);
}

/* ========================================
   PROGRESS
======================================== */
.progress-section {
    padding: 80px 0;
}

.progress-section h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
}

.progress-container {
    max-width: 600px;
    margin: 0 auto 40px;
}

.progress-bar {
    height: 20px;
    background-color: var(--bg-alt);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 10px;
    width: 0%;
    transition: width 0.5s ease;
}

.progress-text {
    text-align: center;
    margin-top: 15px;
    font-size: 18px;
    color: var(--text-light);
}

.calendar {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(38px, 1fr));
    gap: 8px;
    max-width: 800px;
    margin: 0 auto;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-alt);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid var(--border);
}

.calendar-day:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.calendar-day.completed {
    background-color: var(--success);
    color: white;
    border-color: var(--success);
}

.calendar-day.current {
    border-color: var(--primary);
    border-width: 2px;
    color: var(--primary);
}

/* ========================================
   CTA
======================================== */
.cta {
    padding: 80px 0;
    background-color: var(--primary);
    text-align: center;
    color: white;
}

.cta h2 {
    font-size: 32px;
    margin-bottom: 15px;
}

.cta p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 30px;
}

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

.cta .btn-primary:hover {
    background-color: var(--bg-alt);
}

/* ========================================
   FOOTER
======================================== */
.footer {
    padding: 30px 0;
    background-color: var(--text);
    color: var(--text-light);
    text-align: center;
    font-size: 14px;
}

/* ========================================
   PAGE LESONA (Liste)
======================================== */
.page-header {
    padding: 50px 0;
    background-color: var(--bg-alt);
    text-align: center;
}

.page-header h1 {
    font-size: 36px;
    margin-bottom: 10px;
}

.page-header p {
    color: var(--text-light);
    font-size: 18px;
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 30px 0;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 10px 24px;
    border: 2px solid var(--border);
    border-radius: 30px;
    background: none;
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.filter-tab:hover,
.filter-tab.active {
    border-color: var(--primary);
    color: var(--primary);
    background-color: rgba(59, 130, 246, 0.05);
}

.lessons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    padding: 20px 0 80px;
}

.lesson-card {
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 25px;
    transition: all 0.3s ease;
}

.lesson-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.lesson-card-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.lesson-day {
    width: 50px;
    height: 50px;
    background-color: var(--bg-alt);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    color: var(--primary);
}

.lesson-card.completed .lesson-day {
    background-color: var(--success);
    color: white;
}

.lesson-card-header h3 {
    font-size: 18px;
    flex: 1;
}

.lesson-card p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 15px;
}

.lesson-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.lesson-tag {
    padding: 4px 10px;
    background-color: var(--bg-alt);
    border-radius: 15px;
    font-size: 12px;
    color: var(--text-light);
}

.lesson-link {
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
}

.lesson-link:hover {
    text-decoration: underline;
}

/* ========================================
   PAGE LESONA SINGLE
======================================== */
.lesson-hero {
    padding: 40px 0;
    background-color: var(--bg-alt);
}

.lesson-breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 14px;
    color: var(--text-light);
}

.lesson-breadcrumb a {
    color: var(--primary);
}

.lesson-meta {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.lesson-meta-item {
    padding: 6px 14px;
    background-color: var(--bg);
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-light);
}

.lesson-content {
    padding: 50px 0;
}

.lesson-content .container {
    max-width: 800px;
}

.lesson-section {
    margin-bottom: 40px;
}

.lesson-section h2 {
    font-size: 24px;
    margin-bottom: 20px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 10px;
}

.lesson-section h2::before {
    content: '';
    width: 5px;
    height: 25px;
    background-color: var(--primary);
    border-radius: 3px;
}

.vocab-list {
    display: grid;
    gap: 12px;
}

.vocab-item {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    background-color: var(--bg-alt);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--primary);
}

.vocab-french {
    font-weight: 600;
    font-size: 18px;
    min-width: 150px;
}

.vocab-pronun {
    color: var(--text-light);
    font-style: italic;
    margin: 0 20px;
    font-size: 14px;
}

.vocab-malagasy {
    color: var(--secondary);
    font-weight: 500;
}

.grammar-box {
    background-color: var(--bg-alt);
    border-radius: var(--radius);
    padding: 25px;
    border: 1px solid var(--border);
}

.grammar-box p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.example-box {
    background-color: white;
    padding: 20px;
    border-radius: var(--radius-sm);
    margin-top: 15px;
}

.example-box .french {
    font-size: 18px;
    font-weight: 500;
    color: var(--primary);
    margin-bottom: 5px;
}

.example-box .malagasy {
    color: var(--text-light);
    font-style: italic;
}

.quiz-container {
    background-color: var(--bg-alt);
    border-radius: var(--radius);
    padding: 30px;
}

.quiz-question {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
}

.quiz-options {
    display: grid;
    gap: 12px;
}

.quiz-option {
    padding: 15px 20px;
    background-color: var(--bg);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 16px;
}

.quiz-option:hover {
    border-color: var(--primary);
}

.quiz-option.selected {
    border-color: var(--primary);
    background-color: rgba(59, 130, 246, 0.05);
}

.quiz-option.correct {
    border-color: var(--success);
    background-color: rgba(16, 185, 129, 0.1);
}

.quiz-option.incorrect {
    border-color: #ef4444;
    background-color: rgba(239, 68, 68, 0.1);
}

.quiz-feedback {
    margin-top: 20px;
    padding: 15px;
    border-radius: var(--radius-sm);
    display: none;
}

.quiz-feedback.show {
    display: block;
}

.quiz-feedback.success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

.quiz-feedback.error {
    background-color: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.lesson-nav {
    display: flex;
    justify-content: space-between;
    padding: 30px 0;
    border-top: 1px solid var(--border);
    margin-top: 50px;
}

.lesson-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 25px;
    background-color: var(--bg-alt);
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all 0.2s ease;
}

.lesson-nav a:hover {
    background-color: var(--primary);
    color: white;
}

.complete-btn {
    display: block;
    width: 100%;
    padding: 18px;
    background-color: var(--success);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 30px;
}

.complete-btn:hover {
    background-color: #059669;
    transform: translateY(-2px);
}

.complete-btn.completed {
    background-color: var(--text-light);
    cursor: default;
}

/* ========================================
   PAGE RAKITRA
======================================== */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    padding: 50px 0;
}

.resource-card {
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px;
}

.resource-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.resource-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.lexique-search {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 16px;
    margin-bottom: 20px;
}

.lexique-search:focus {
    outline: none;
    border-color: var(--primary);
}

.lexique-list {
    max-height: 400px;
    overflow-y: auto;
}

.lexique-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
}

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

.conjugation-table {
    width: 100%;
    border-collapse: collapse;
}

.conjugation-table th,
.conjugation-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.conjugation-table th {
    background-color: var(--bg-alt);
    font-weight: 600;
}

/* ========================================
   PAGE MOMBA
======================================== */
.about-content {
    padding: 60px 0;
    max-width: 800px;
    margin: 0 auto;
}

.about-content h2 {
    font-size: 28px;
    margin-bottom: 20px;
    margin-top: 40px;
}

.about-content h2:first-child {
    margin-top: 0;
}

.about-content p {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 17px;
    line-height: 1.8;
}

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-list {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--bg);
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border);
        display: none;
    }

    .nav-list.active {
        display: flex;
    }

    .nav-list a {
        padding: 15px;
    }

    .hero h1 {
        font-size: 28px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .features h2,
    .phases h2,
    .progress-section h2 {
        font-size: 26px;
    }

    .phase-card {
        padding: 25px;
    }

    .calendar {
        grid-template-columns: repeat(10, 1fr);
    }

    .lesson-nav {
        flex-direction: column;
        gap: 15px;
    }

    .lesson-nav a {
        justify-content: center;
    }

    .vocab-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .vocab-pronun {
        margin: 0;
    }
}