/* --- VARIABLES ET RESET --- */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #27ae60;
    --accent-color: #e67e22;
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-color: #333333;
    --border-color: #e0e0e0;
    --success-bg: #d4edda;
    --success-color: #155724;
    --danger-bg: #f8d7da;
    --danger-color: #721c24;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 2rem auto;
    flex: 1;
}

/* --- HEADER ET NAVIGATION --- */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}

nav a:hover {
    color: var(--accent-color);
}

.lang-selector {
    font-size: 0.9rem;
}

.lang-selector a {
    color: #fff;
    text-decoration: none;
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
}

.lang-selector a.active {
    background-color: var(--secondary-color);
    font-weight: bold;
}

/* --- TABLEAUX DE VOCABULAIRE & GRAMMAIRE --- */
.table-voca {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1.5rem;
    background-color: var(--card-bg);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    overflow: hidden;
}

.table-voca th {
    background-color: var(--primary-color);
    color: white;
    text-align: left;
    padding: 1rem;
}

.table-voca td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.table-voca tr:hover {
    background-color: #f1f1f1;
}

audio {
    height: 35px;
    max-width: 200px;
}

/* --- COMPOSANT QUIZ --- */
.quiz-container {
    max-width: 600px;
    margin: 0 auto;
}

.quiz-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    border: 1px solid var(--border-color);
}

.quiz-instruction {
    text-align: center;
    color: #666;
    margin-bottom: 1rem;
}

.word-to-translate {
    text-align: center;
    background-color: #f0f4f8;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.word-to-translate h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.quiz-form .form-group {
    margin-bottom: 1.2rem;
}

.quiz-form label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
}

.quiz-form input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.quiz-form input[type="text"]:focus {
    border-color: var(--secondary-color);
    outline: none;
}

.btn-submit {
    width: 100%;
    padding: 0.8rem;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-submit:hover {
    background-color: #219150;
}

/* --- MESSAGES D'ALERTE --- */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.alert-success {
    background-color: var(--success-bg);
    color: var(--success-color);
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background-color: var(--danger-bg);
    color: var(--danger-color);
    border: 1px solid #f5c6cb;
}

/* --- FOOTER --- */
footer {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    padding: 1.5rem;
    margin-top: auto;
    font-size: 0.9rem;
}

footer a {
    color: #bdc3c7;
    text-decoration: underline;
}
/* --- FILTRE DE CATÉGORIES --- */
.filter-form {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: flex-end;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--card-bg);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.filter-group select {
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    font-size: 0.95rem;
    cursor: pointer;
}

.word-text {
    font-weight: 600;
    margin-right: 0.5rem;
}

.no-data {
    margin-top: 2rem;
    text-align: center;
    color: #666;
    font-style: italic;
}
/* --- GRAMMAIRE ET CONJUGAISON --- */
.card-rule {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.04);
}

.card-rule h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 0.4rem;
}

.rule-description {
    background-color: #f9f9f9;
    padding: 1rem;
    border-left: 4px solid var(--primary-color);
    margin-bottom: 1rem;
    border-radius: 0 4px 4px 0;
}

.badge-time {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
}

.subtitle {
    color: #666;
    margin-bottom: 1.5rem;
}
/* ==========================================================================
   1. VARIABLES, RESET & STYLES DE BASE
   ========================================================================== */
:root {
    --primary-color: #1a365d;       /* Bleu profond moderne */
    --primary-hover: #2b6cb0;
    --secondary-color: #2f855a;     /* Vert élégant */
    --accent-color: #dd6b20;        /* Orange chaud pour les accents */
    --bg-color: #f7fafc;            /* Gris très clair / blanc cassé */
    --card-bg: #ffffff;
    --text-color: #2d3748;          /* Gris foncé pour une excellente lisibilité */
    --text-muted: #718096;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    --success-bg: #c6f6d5;
    --success-color: #22543d;
    --danger-bg: #fed7d7;
    --danger-color: #742a2a;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

/* ==========================================================================
   2. HEADER & NAVIGATION
   ========================================================================== */
header {
    background-color: var(--primary-color);
    color: #ffffff;
    padding: 0 2rem;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

nav a {
    color: #e2e8f0;
    font-weight: 600;
    font-size: 1rem;
    padding: 0.5rem 0.8rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

nav a:hover {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.1);
}

/* Sélecteur de langue d'interface */
.lang-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: #cbd5e0;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
}

.lang-selector span {
    font-weight: 500;
    margin-right: 0.2rem;
}

.lang-selector a {
    color: #e2e8f0;
    font-weight: 600;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    transition: all 0.2s ease;
}

.lang-selector a:hover {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.2);
}

.lang-selector a.active {
    background-color: var(--secondary-color);
    color: #ffffff;
    font-weight: 700;
}

/* ==========================================================================
   3. CONTENEUR PRINCIPAL
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 2rem auto;
    padding: 0 1.5rem;
    flex: 1;
}

/* Titres de page */
.container h2 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.container h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 4px;
    background-color: var(--secondary-color);
    border-radius: 2px;
}

/* ==========================================================================
   4. COMPOSANTS COMMUNS (Tableaux, Filtres, Cartes)
   ========================================================================== */
/* Formulaires de filtres (dans inc.voca.php, inc.conj.php, etc.) */
.filter-form {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 1.5rem;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background-color: var(--card-bg);
    padding: 0.6rem 1.2rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.filter-group label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.95rem;
}

.filter-group select {
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    font-size: 0.95rem;
    outline: none;
    cursor: pointer;
    background-color: #ffffff;
}

.filter-group select:focus {
    border-color: var(--primary-hover);
}

/* Tableaux d'apprentissage (Vocabulaire, Grammaire, Conjugaison) */
.table-voca {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background-color: var(--card-bg);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 2rem;
}

.table-voca th {
    background-color: var(--primary-color);
    color: #ffffff;
    font-weight: 600;
    text-align: left;
    padding: 1rem 1.2rem;
    font-size: 1rem;
}

.table-voca td {
    padding: 1rem 1.2rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.table-voca tbody tr:last-child td {
    border-bottom: none;
}

.table-voca tbody tr:hover {
    background-color: #f8fafc;
}

/* Formatage du texte et lecteurs audio dans le tableau */
.word-text {
    font-weight: 600;
    color: var(--text-color);
    margin-right: 0.5rem;
}

audio {
    height: 32px;
    max-width: 180px;
    vertical-align: middle;
}

/* ==========================================================================
   5. PAGE QUIZ (inc.quiz.php)
   ========================================================================== */
.quiz-container {
    max-width: 600px;
    margin: 0 auto;
}

.quiz-card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.quiz-instruction {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-size: 1rem;
}

.word-to-translate {
    text-align: center;
    background-color: #edf2f7;
    padding: 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.word-to-translate h3 {
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.quiz-form .form-group {
    margin-bottom: 1.25rem;
}

.quiz-form label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
    color: var(--text-color);
}

.quiz-form input[type="text"] {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.quiz-form input[type="text"]:focus {
    border-color: var(--primary-hover);
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.2);
    outline: none;
}

.btn-submit {
    width: 100%;
    padding: 0.9rem;
    background-color: var(--secondary-color);
    color: #ffffff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin-top: 0.5rem;
}

.btn-submit:hover {
    background-color: #276749;
}

/* Feedback Quiz (Alertes) */
.alert {
    padding: 1rem 1.2rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.alert-success {
    background-color: var(--success-bg);
    color: var(--success-color);
    border: 1px solid #9ae6b4;
}

.alert-danger {
    background-color: var(--danger-bg);
    color: var(--danger-color);
    border: 1px solid #feb2b2;
}

/* ==========================================================================
   6. FOOTER
   ========================================================================== */
footer {
    background-color: var(--primary-color);
    color: #cbd5e0;
    text-align: center;
    padding: 1.5rem 1rem;
    margin-top: auto;
    font-size: 0.9rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
}

footer a {
    color: #a0aec0;
    text-decoration: underline;
}

footer a:hover {
    color: #ffffff;
}