/* ==========================================================================
   QS World University Rankings — Feuille de style locale
   Complément aux classes utilitaires Tailwind CSS
   Palette : Navy #1E3A5F  |  Accent/Orange #E67E22
   ========================================================================== */

/* --------------------------------------------------------------------------
   Variables CSS globales
   -------------------------------------------------------------------------- */
:root {
    --color-navy:   #1E3A5F;
    --color-accent: #E67E22;
    --color-accent-light: rgba(230, 126, 34, 0.15);
    --color-navy-light:   rgba(30,  58,  95, 0.08);
    --radius-card:  1rem;
    --shadow-card:  0 2px 12px rgba(30, 58, 95, 0.08);
    --transition:   0.2s ease;
}

/* --------------------------------------------------------------------------
   Reset / base
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    -webkit-font-smoothing: antialiased;
    color: #1f2937;
}

/* --------------------------------------------------------------------------
   Barres de progression CSS (critères QS)
   .progress-bar est utilisé dans universite.php
   -------------------------------------------------------------------------- */
.progress-bar {
    position: relative;
    height: 0.75rem;          /* 12px */
    border-radius: 9999px;
    transition: width var(--transition);
    min-width: 2px;
}

.progress-bar::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(to right, transparent 60%, rgba(255,255,255,0.25));
    pointer-events: none;
}

/* Wrapper de barre de progression (fond gris) */
.progress-track {
    width: 100%;
    background-color: #f3f4f6;
    border-radius: 9999px;
    overflow: hidden;
    height: 0.75rem;
    position: relative;
}

/* --------------------------------------------------------------------------
   Conteneur radar Chart.js
   .radar-wrapper garantit un aspect ratio cohérent
   -------------------------------------------------------------------------- */
.radar-wrapper {
    position: relative;
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
}

/* Empêche les graphiques de déborder sur mobile */
canvas {
    max-width: 100%;
}

/* --------------------------------------------------------------------------
   Cartes (surcharge Tailwind pour l'ombre et le radius uniformes)
   -------------------------------------------------------------------------- */
.card {
    background-color: #ffffff;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 1.5rem;
}

/* --------------------------------------------------------------------------
   Input range (sliders) — recommandation.php
   Accent couleur sur tous navigateurs
   -------------------------------------------------------------------------- */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: #e5e7eb;
    border-radius: 9999px;
    outline: none;
    cursor: pointer;
    transition: background var(--transition);
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
    transition: transform var(--transition), box-shadow var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 2px 8px rgba(230,126,34,0.4);
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-accent);
    cursor: pointer;
    border: none;
    box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

input[type="range"]:focus {
    background: #d1d5db;
}

/* --------------------------------------------------------------------------
   Tableau — style commun pour les résultats analytics (stats.php)
   -------------------------------------------------------------------------- */
.analytics-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.analytics-table th {
    background-color: #f9fafb;
    color: #6b7280;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    border-bottom: 1px solid #e5e7eb;
}

.analytics-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #f3f4f6;
    color: #374151;
}

.analytics-table tbody tr:hover {
    background-color: #eff6ff;
}

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

/* --------------------------------------------------------------------------
   Badge de rang (médailles 1/2/3)
   -------------------------------------------------------------------------- */
.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 9999px;
    font-weight: 700;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.rank-badge--gold   { background-color: #fbbf24; color: #fff; }
.rank-badge--silver { background-color: #9ca3af; color: #fff; }
.rank-badge--bronze { background-color: #f97316; color: #fff; }
.rank-badge--default{ background-color: #f3f4f6; color: #6b7280; }

/* --------------------------------------------------------------------------
   Navigation — indicateur de page active
   (complément aux classes Tailwind dans header.php)
   -------------------------------------------------------------------------- */
nav a[aria-current="page"] {
    background-color: var(--color-accent);
    color: #ffffff;
}

/* --------------------------------------------------------------------------
   Graphiques — état de chargement (skeleton)
   -------------------------------------------------------------------------- */
.chart-skeleton {
    background: linear-gradient(90deg, #f3f4f6 25%, #e5e7eb 50%, #f3f4f6 75%);
    background-size: 200% 100%;
    animation: shimmer 1.4s infinite;
    border-radius: 0.5rem;
}

@keyframes shimmer {
    0%   { background-position: -200% 0; }
    100% { background-position:  200% 0; }
}

/* --------------------------------------------------------------------------
   Message d'erreur / vide génériques
   -------------------------------------------------------------------------- */
.state-empty {
    border: 2px dashed #bfdbfe;
    background-color: #eff6ff;
    border-radius: var(--radius-card);
    padding: 3rem;
    text-align: center;
}

.state-empty p.icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.state-empty p.title {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--color-navy);
    margin-bottom: 0.5rem;
}

.state-empty p.subtitle {
    color: #6b7280;
    font-size: 0.9rem;
}

/* --------------------------------------------------------------------------
   Responsive — breakpoint 375px (mobile petit format)
   AC-20 : aucun overflow horizontal, graphiques lisibles
   -------------------------------------------------------------------------- */
@media (max-width: 375px) {
    body {
        font-size: 14px;
    }

    /* Navigation : empêcher le débordement des liens */
    nav .flex {
        flex-wrap: wrap;
    }

    /* Réduire les paddings des cartes sur très petit écran */
    .card,
    .bg-white.rounded-2xl {
        padding: 1rem;
    }

    /* Radar — hauteur réduite pour tenir dans l'écran */
    .radar-wrapper {
        height: 240px !important;
    }

    /* Tableaux — permettre le scroll horizontal plutôt que d'écraser */
    .overflow-x-auto {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Graphiques : hauteur minimale garantie */
    canvas {
        min-height: 180px;
    }

    /* Textes tronqués */
    .truncate-mobile {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        max-width: 140px;
    }

    /* Formulaires : pleine largeur sur mobile */
    select,
    input[type="range"] {
        width: 100%;
    }

    /* Grilles → une colonne */
    .grid {
        grid-template-columns: 1fr !important;
    }
}

/* --------------------------------------------------------------------------
   Impression (optionnel — qualité rapport)
   -------------------------------------------------------------------------- */
@media print {
    nav, footer, button, form { display: none !important; }
    body { font-size: 12pt; color: #000; }
    .bg-white { box-shadow: none; border: 1px solid #ccc; }
}