/* ============================================
   BAC 2Kπ Séminaire 2026 — Design System
   Palette: Vert émeraude + Or + Crème
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@600;700;800&family=DM+Sans:wght@400;500;600;700&display=swap');

:root {
    --green-900: #0D3B1E;
    --green-800: #14532D;
    --green-700: #166534;
    --green-600: #1B7A3D;
    --green-500: #22883A;
    --green-100: #DCFCE7;
    --green-50: #F0FDF4;
    --gold-600: #B8860B;
    --gold-500: #D4A017;
    --gold-400: #E6B422;
    --gold-300: #F0C850;
    --gold-100: #FEF3C7;
    --cream: #FFFBF0;
    --cream-dark: #F5F0E5;
    --danger: #DC2626;
    --warning: #F59E0B;
    --text: #1A1A1A;
    --text-muted: #6B7280;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
    --radius: 12px;
    --radius-sm: 8px;
}

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

body {
    font-family: 'DM Sans', -apple-system, sans-serif;
    background: var(--cream);
    color: var(--text);
    min-height: 100vh;
}

/* ---- SIDEBAR ---- */
.sidebar {
    position: fixed;
    left: 0; top: 0;
    width: 260px;
    height: 100vh;
    background: linear-gradient(180deg, var(--green-900) 0%, var(--green-800) 50%, var(--green-700) 100%);
    color: #fff;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform .3s ease;
}

.sidebar-brand {
    padding: 24px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,.1);
}
.sidebar-brand img { width: 48px; height: 48px; object-fit: contain; filter: drop-shadow(0 0 6px rgba(212,160,23,.5)); }
.sidebar-brand h1 { font-family: 'Playfair Display', serif; font-size: 1.3rem; font-weight: 700; }
.sidebar-brand span { font-size: .75rem; opacity: .7; display: block; margin-top: 2px; }

.sidebar-nav { flex: 1; padding: 16px 12px; display: flex; flex-direction: column; gap: 4px; overflow-y: auto; }
.sidebar-nav a {
    display: flex; align-items: center; gap: 12px;
    padding: 12px 16px; border-radius: var(--radius-sm);
    color: rgba(255,255,255,.75); text-decoration: none;
    font-size: .9rem; font-weight: 500;
    transition: all .2s;
}
.sidebar-nav a:hover { background: rgba(255,255,255,.1); color: #fff; }
.sidebar-nav a.active { background: var(--gold-500); color: var(--green-900); font-weight: 700; box-shadow: 0 2px 8px rgba(212,160,23,.4); }
.sidebar-nav a svg { width: 20px; height: 20px; flex-shrink: 0; }
.sidebar-nav .spacer { flex: 1; }

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255,255,255,.1);
    font-size: .8rem;
    opacity: .6;
}

/* ---- MAIN CONTENT ---- */
.main-content {
    margin-left: 260px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.topbar {
    padding: 16px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #fff;
    border-bottom: 1px solid rgba(0,0,0,.06);
    position: sticky; top: 0; z-index: 50;
}
.topbar h2 { font-family: 'Playfair Display', serif; font-size: 1.4rem; color: var(--green-800); }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.topbar-user {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 14px; border-radius: 50px;
    background: var(--green-50); color: var(--green-800);
    font-weight: 600; font-size: .85rem;
}

.page-body { flex: 1; padding: 28px 32px; }

/* ---- STAT CARDS ---- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}
.stat-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0,0,0,.04);
    position: relative;
    overflow: hidden;
    transition: transform .2s, box-shadow .2s;
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.stat-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 4px; height: 100%;
}
.stat-card.green::after { background: var(--green-600); }
.stat-card.gold::after { background: var(--gold-500); }
.stat-card.red::after { background: var(--danger); }
.stat-card.orange::after { background: var(--warning); }
.stat-label { font-size: .8rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .05em; }
.stat-value { font-family: 'Playfair Display', serif; font-size: 2rem; font-weight: 800; margin-top: 6px; color: var(--green-900); }
.stat-sub { font-size: .8rem; color: var(--text-muted); margin-top: 4px; }

/* ---- CARDS / PANELS ---- */
.panel {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0,0,0,.04);
    margin-bottom: 24px;
}
.panel-header {
    padding: 20px 24px;
    border-bottom: 1px solid rgba(0,0,0,.06);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.panel-header h3 { font-family: 'Playfair Display', serif; font-size: 1.1rem; color: var(--green-800); }
.panel-body { padding: 24px; }

/* ---- TABLE ---- */
.table-container { overflow-x: auto; }
table {
    width: 100%;
    border-collapse: collapse;
    font-size: .88rem;
}
table thead th {
    background: var(--green-50);
    color: var(--green-800);
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    border-bottom: 2px solid var(--green-100);
    white-space: nowrap;
}
table tbody td {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(0,0,0,.04);
    vertical-align: middle;
}
table tbody tr:hover { background: var(--cream); }
table tbody tr:last-child td { border-bottom: none; }

/* ---- BADGES ---- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .02em;
}
.badge-success { background: var(--green-100); color: var(--green-700); }
.badge-warning { background: var(--gold-100); color: var(--gold-600); }
.badge-danger { background: #FEE2E2; color: var(--danger); }
.badge-info { background: #DBEAFE; color: #1D4ED8; }

/* ---- BUTTONS ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-family: 'DM Sans', sans-serif;
    font-size: .88rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all .2s;
    line-height: 1.4;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary { background: var(--green-700); color: #fff; }
.btn-primary:hover { background: var(--green-600); color: #fff; box-shadow: 0 4px 12px rgba(22,101,52,.3); }
.btn-gold { background: linear-gradient(135deg, var(--gold-500), var(--gold-400)); color: var(--green-900); }
.btn-gold:hover { box-shadow: 0 4px 12px rgba(212,160,23,.4); transform: translateY(-1px); color: var(--green-900); }
.btn-outline { background: transparent; border: 2px solid var(--green-700); color: var(--green-700); }
.btn-outline:hover { background: var(--green-700); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 12px; font-size: .8rem; }
.btn-xs { padding: 4px 8px; font-size: .75rem; }

/* ---- FORMS ---- */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; font-size: .85rem; color: var(--green-800); margin-bottom: 6px; }
.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid #E5E7EB;
    border-radius: var(--radius-sm);
    font-family: 'DM Sans', sans-serif;
    font-size: .9rem;
    transition: border-color .2s, box-shadow .2s;
    background: #fff;
}
.form-control:focus { outline: none; border-color: var(--green-600); box-shadow: 0 0 0 3px rgba(22,101,52,.1); }
select.form-control { 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='%236B7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

/* ---- SEARCH / FILTERS ---- */
.filters-bar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 20px;
}
.search-input {
    flex: 1;
    min-width: 200px;
    position: relative;
}
.search-input input {
    width: 100%;
    padding: 10px 14px 10px 40px;
    border: 2px solid #E5E7EB;
    border-radius: 50px;
    font-size: .88rem;
    font-family: 'DM Sans', sans-serif;
    transition: all .2s;
}
.search-input input:focus { outline: none; border-color: var(--green-600); box-shadow: 0 0 0 3px rgba(22,101,52,.1); }
.search-input svg { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-muted); width: 18px; }

.filter-select {
    padding: 10px 36px 10px 14px;
    border: 2px solid #E5E7EB;
    border-radius: 50px;
    font-size: .85rem;
    font-family: 'DM Sans', sans-serif;
    background: #fff;
    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='%236B7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    cursor: pointer;
}
.filter-select:focus { outline: none; border-color: var(--green-600); }

/* ---- FLASH MESSAGES ---- */
.flash { padding: 14px 20px; border-radius: var(--radius-sm); margin-bottom: 20px; font-weight: 500; font-size: .88rem; display: flex; align-items: center; gap: 10px; }
.flash-success { background: var(--green-100); color: var(--green-700); border: 1px solid rgba(22,101,52,.2); }
.flash-warning { background: var(--gold-100); color: var(--gold-600); }
.flash-error { background: #FEE2E2; color: var(--danger); }

/* ---- STUDENT PROFILE ---- */
.profile-header {
    background: linear-gradient(135deg, var(--green-800), var(--green-600));
    color: #fff;
    padding: 32px;
    border-radius: var(--radius) var(--radius) 0 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}
.profile-name { font-family: 'Playfair Display', serif; font-size: 1.6rem; }
.profile-code {
    font-size: .85rem;
    padding: 4px 12px;
    background: rgba(255,255,255,.15);
    border-radius: 50px;
    margin-top: 4px;
    display: inline-block;
}
.profile-meta { display: flex; gap: 24px; flex-wrap: wrap; margin-top: 10px; font-size: .88rem; opacity: .9; }
.profile-meta span { display: flex; align-items: center; gap: 6px; }

.info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
.info-item { padding: 14px; border-radius: var(--radius-sm); background: var(--cream); }
.info-label { font-size: .75rem; font-weight: 600; text-transform: uppercase; color: var(--text-muted); letter-spacing: .04em; }
.info-value { font-size: 1rem; font-weight: 600; margin-top: 4px; color: var(--green-900); }

/* ---- PAYMENT PROGRESS ---- */
.progress-bar-container {
    width: 100%;
    height: 12px;
    background: #E5E7EB;
    border-radius: 50px;
    overflow: hidden;
    margin: 12px 0;
}
.progress-bar-fill {
    height: 100%;
    border-radius: 50px;
    background: linear-gradient(90deg, var(--green-600), var(--gold-500));
    transition: width .5s ease;
}

/* ---- LOGIN ---- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--green-900) 0%, var(--green-700) 60%, var(--gold-600) 100%);
    padding: 20px;
}
.login-card {
    background: #fff;
    border-radius: 20px;
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0,0,0,.25);
    text-align: center;
}
.login-card img { width: 72px; margin-bottom: 16px; filter: drop-shadow(0 2px 8px rgba(212,160,23,.3)); }
.login-card h1 { font-family: 'Playfair Display', serif; font-size: 1.6rem; color: var(--green-800); margin-bottom: 4px; }
.login-card p { color: var(--text-muted); font-size: .88rem; margin-bottom: 28px; }
.login-card .form-control { text-align: left; }
.login-card .btn { width: 100%; justify-content: center; padding: 12px; font-size: 1rem; }

/* ---- RECEIPT (impression) ---- */
.receipt-page { background: #fff; max-width: 900px; margin: 0 auto; }

@media print {
    .sidebar, .topbar, .no-print { display: none !important; }
    .main-content { margin-left: 0 !important; }
    .page-body { padding: 0 !important; }
    body { background: #fff; }
}

/* ---- RESPONSIVE ---- */
.mobile-toggle { display: none; background: none; border: none; color: var(--green-800); cursor: pointer; }
.mobile-toggle svg { width: 28px; height: 28px; }

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .mobile-toggle { display: block; }
    .page-body { padding: 16px; }
    .topbar { padding: 12px 16px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .stat-card { padding: 16px; }
    .stat-value { font-size: 1.5rem; }
    .filters-bar { flex-direction: column; align-items: stretch; }
    .form-row { grid-template-columns: 1fr; }
    .profile-header { padding: 20px; }
    .profile-name { font-size: 1.2rem; }
}

/* ---- SELECT2-like autocomplete ---- */
.autocomplete-wrapper { position: relative; }
.autocomplete-results {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: #fff;
    border: 2px solid var(--green-600);
    border-top: none;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    max-height: 250px;
    overflow-y: auto;
    z-index: 200;
    box-shadow: var(--shadow-md);
    display: none;
}
.autocomplete-results.active { display: block; }
.autocomplete-item {
    padding: 10px 14px;
    cursor: pointer;
    font-size: .88rem;
    border-bottom: 1px solid rgba(0,0,0,.04);
}
.autocomplete-item:hover, .autocomplete-item.active { background: var(--green-50); color: var(--green-800); }

/* ---- EMPTY STATE ---- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}
.empty-state svg { width: 64px; height: 64px; margin-bottom: 16px; opacity: .4; }
.empty-state h3 { font-family: 'Playfair Display', serif; font-size: 1.2rem; color: var(--green-800); margin-bottom: 8px; }

/* ---- ANIMATIONS ---- */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
.animate-in { animation: fadeInUp .4s ease forwards; }
.delay-1 { animation-delay: .05s; }
.delay-2 { animation-delay: .1s; }
.delay-3 { animation-delay: .15s; }
.delay-4 { animation-delay: .2s; }