/* ============================================================
   LVAS - Feuille de style principale
   ============================================================ */

/* Variables de couleur */
:root {
    --lvas-primary:    #1a5276;
    --lvas-primary-dk: #154360;
    --lvas-secondary:  #2e86c1;
    --lvas-accent:     #d4ac0d;
    --lvas-success:    #1e8449;
    --lvas-warning:    #d68910;
    --lvas-danger:     #b03a2e;
    --lvas-light-bg:   #f7f9fb;
    --lvas-border:     #dde3ea;
}

/* === Corps & typographie === */
body {
    font-family: 'Segoe UI', Arial, sans-serif;
    font-size: 1.05rem;
    line-height: 1.6;
    background: var(--lvas-light-bg);
    color: #1a1a2e;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4, h5 {
    font-weight: 700;
    line-height: 1.2;
    color: #1a1a2e;
}

/* === Navbar === */
.lvas-navbar {
    background: var(--lvas-primary) !important;
    padding: 0.75rem 1.5rem;
    box-shadow: 0 2px 8px rgba(0,0,0,.15);
}

.lvas-navbar .navbar-brand {
    font-size: 1.4rem;
    letter-spacing: .5px;
}

.lvas-navbar .nav-link {
    font-size: 1rem;
    padding: 0.5rem 0.9rem !important;
    border-radius: 6px;
    color: rgba(255,255,255,.85) !important;
    transition: background .2s, color .2s;
}

.lvas-navbar .nav-link:hover,
.lvas-navbar .nav-link.active {
    background: rgba(255,255,255,.15);
    color: #fff !important;
}

.lvas-navbar .btn-outline-light {
    border-color: rgba(255,255,255,.7);
    color: #fff;
}

/* === Footer === */
.lvas-footer {
    background: #1a1a2e;
    color: rgba(255,255,255,.7);
    margin-top: auto;
}

.lvas-footer a {
    color: rgba(255,255,255,.55);
    text-decoration: none;
}

.lvas-footer a:hover {
    color: #fff;
}

/* === Cards === */
.card {
    border-radius: 12px;
}

.card-header {
    border-bottom: 1px solid var(--lvas-border);
    padding: .85rem 1.25rem;
    font-size: 1.05rem;
}

.lvas-card {
    border-radius: 14px;
}

/* Stat cards dashboard */
.lvas-stat-card {
    border-radius: 12px;
    transition: transform .18s, box-shadow .18s;
}

.lvas-stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,.12) !important;
}

.lvas-stat-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.bg-primary-soft  { background: #d6e4f0 !important; }
.bg-success-soft  { background: #d5f0e2 !important; }
.bg-warning-soft  { background: #fdebd0 !important; }
.bg-danger-soft   { background: #fadbd8 !important; }

/* Cours card */
.lvas-cours-card {
    transition: transform .18s, box-shadow .18s;
}

.lvas-cours-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(0,0,0,.1) !important;
}

/* === Forms === */
.form-control,
.form-select {
    font-size: 1rem;
    padding: .55rem .9rem;
    border-radius: 8px;
    border-color: var(--lvas-border);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--lvas-secondary);
    box-shadow: 0 0 0 .2rem rgba(46,134,193,.2);
}

.form-control-lg,
.form-select-lg {
    font-size: 1.1rem;
    padding: .7rem 1rem;
}

/* === Buttons === */
.btn {
    border-radius: 8px;
    font-weight: 600;
    transition: all .18s;
}

.btn-lg {
    padding: .65rem 1.4rem;
    font-size: 1.05rem;
}

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

.btn-primary:hover {
    background: var(--lvas-primary-dk);
    border-color: var(--lvas-primary-dk);
}

/* === Tables === */
.table th {
    font-weight: 700;
    font-size: .95rem;
    color: #555;
    text-transform: uppercase;
    letter-spacing: .3px;
    border-bottom: 2px solid var(--lvas-border);
}

.table td {
    vertical-align: middle;
    padding: .75rem .85rem;
}

.table-hover tbody tr:hover {
    background: #eaf3fb;
}

/* === Badges === */
.badge {
    font-size: .8rem;
    padding: .35em .65em;
    border-radius: 6px;
}

/* === Alerts === */
.alert {
    border-radius: 10px;
    border: none;
    font-size: 1rem;
}

/* === Nav tabs / pills === */
.nav-tabs .nav-link {
    font-size: 1rem;
    font-weight: 600;
    color: #555;
    border-radius: 8px 8px 0 0;
}

.nav-tabs .nav-link.active {
    color: var(--lvas-primary);
    border-bottom-color: transparent;
}

.nav-pills .nav-link {
    font-size: .95rem;
    font-weight: 600;
    border-radius: 8px;
    color: var(--lvas-primary);
}

.nav-pills .nav-link.active {
    background: var(--lvas-primary);
    color: #fff;
}

/* === Pagination === */
.page-link {
    color: var(--lvas-primary);
    border-radius: 6px;
    margin: 0 2px;
    font-weight: 600;
}

.page-item.active .page-link {
    background: var(--lvas-primary);
    border-color: var(--lvas-primary);
}

/* === Progress bars === */
.progress {
    border-radius: 20px;
    background: #dde3ea;
}

.progress-bar {
    border-radius: 20px;
    background: var(--lvas-primary);
}

/* === Dropdown === */
.dropdown-menu {
    border-radius: 12px;
    border: 1px solid var(--lvas-border);
    box-shadow: 0 4px 16px rgba(0,0,0,.12);
}

.dropdown-item {
    font-size: .98rem;
    padding: .5rem 1.2rem;
    border-radius: 6px;
    transition: background .15s;
}

.dropdown-item:hover {
    background: #eaf3fb;
}

/* === Login/Register page === */
body.bg-auth {
    background: linear-gradient(135deg, var(--lvas-primary) 0%, var(--lvas-secondary) 100%);
}

/* === Modal === */
.modal-content {
    border-radius: 14px;
    border: none;
}

.modal-header {
    border-radius: 14px 14px 0 0;
}

/* === Responsive === */
@media (max-width: 576px) {
    h1.h2 { font-size: 1.5rem; }
    .btn-lg { padding: .6rem 1rem; font-size: 1rem; }
    .table th, .table td { font-size: .9rem; padding: .5rem; }
    .lvas-stat-icon { width: 48px; height: 48px; }
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: #f0f0f0; }
::-webkit-scrollbar-thumb { background: #bbb; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #888; }