/* ============================================
   Gestion de Coffrage - Design System
   Cosider Canalisations
   Thème Clair / Light Theme
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* --- CSS Variables --- */
:root {
    --primary: #F47920;
    --primary-light: #FF9A4D;
    --primary-dark: #D4651A;
    --primary-bg: rgba(244, 121, 32, 0.08);
    --secondary: #2D3436;
    --bg: #F5F6FA;
    --white: #FFFFFF;
    --text-dark: #2D3436;
    --text-light: #636E72;
    --border: #DFE6E9;
    --success: #00B894;
    --success-bg: rgba(0, 184, 148, 0.1);
    --warning: #FDCB6E;
    --warning-bg: rgba(253, 203, 110, 0.12);
    --danger: #E17055;
    --danger-bg: rgba(225, 112, 85, 0.1);
    --info: #0984E3;
    --info-bg: rgba(9, 132, 227, 0.1);
    --purple: #6C5CE7;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --shadow-xl: 0 12px 40px rgba(0,0,0,0.15);
    --radius-sm: 4px;
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --sidebar-width: 260px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 15px; scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text-dark); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: var(--font); }
input, select, textarea { font-family: var(--font); }
code { background: var(--bg); padding: 2px 6px; border-radius: 4px; font-size: 0.85em; color: var(--primary); }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #ccc; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* --- Animations --- */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideIn { from { opacity: 0; transform: scale(0.95) translateY(-10px); } to { opacity: 1; transform: scale(1) translateY(0); } }
@keyframes pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.05); } }

/* ===========================================
   LOGIN PAGE
   =========================================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #F5F6FA 0%, #DFE6E9 50%, #F5F6FA 100%);
    padding: 20px;
    position: relative;
    overflow: hidden;
}
.login-page::before {
    content: '';
    position: absolute;
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(244,121,32,0.12) 0%, transparent 70%);
    top: -100px; right: -100px;
    border-radius: 50%;
}
.login-page::after {
    content: '';
    position: absolute;
    width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(9,132,227,0.08) 0%, transparent 70%);
    bottom: -80px; left: -80px;
    border-radius: 50%;
}
.login-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    animation: slideUp 0.5s ease;
    position: relative;
    z-index: 1;
    border-top: 4px solid var(--primary);
}
.login-logo {
    max-width: 180px;
    margin: 0 auto 24px;
}
.login-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 6px;
}
.login-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 32px;
}
.login-footer {
    text-align: center;
    color: var(--text-light);
    font-size: 0.75rem;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

/* ===========================================
   APP LAYOUT
   =========================================== */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--white);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.sidebar-header {
    padding: 24px 20px 20px;
    border-bottom: 1px solid var(--border);
    text-align: center;
}
.sidebar-logo {
    max-width: 140px;
    margin: 0 auto 12px;
}
.sidebar-header h2 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.3px;
}
.sidebar-nav {
    flex: 1;
    padding: 12px 10px;
    overflow-y: auto;
}
.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 16px;
    border-radius: var(--radius);
    color: var(--text-light);
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
    margin-bottom: 2px;
    border-left: 3px solid transparent;
}
.sidebar-nav-item i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
}
.sidebar-nav-item:hover {
    background: var(--primary-bg);
    color: var(--primary);
}
.sidebar-nav-item.active {
    background: var(--primary-bg);
    color: var(--primary);
    font-weight: 600;
    border-left-color: var(--primary);
}
.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border);
}
.sidebar-user-info { margin-bottom: 10px; }
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 16px; left: 16px;
    z-index: 101;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 12px;
    font-size: 1.1rem;
    color: var(--text-dark);
    box-shadow: var(--shadow);
}

/* --- Main Content --- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 28px 32px;
    min-height: 100vh;
    animation: fadeIn 0.3s ease;
}

/* ===========================================
   PAGE HEADER
   =========================================== */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}
.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 10px;
}
.page-title i { color: var(--primary); }

/* ===========================================
   CARDS
   =========================================== */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(223,230,233,0.5);
    transition: var(--transition);
}
.card:hover { box-shadow: var(--shadow-lg); }

/* --- Stats Grid --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(223,230,233,0.5);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.stat-card::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    opacity: 0;
    transition: var(--transition);
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.stat-card:hover::after { opacity: 1; }
.stat-card-icon {
    width: 52px; height: 52px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    font-size: 1.3rem;
}
.stat-card-value {
    font-size: 1.7rem;
    font-weight: 800;
    color: var(--text-dark);
    line-height: 1.2;
    margin-bottom: 4px;
}
.stat-card-label {
    font-size: 0.8rem;
    color: var(--text-light);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===========================================
   BUTTONS
   =========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 18px;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.85rem;
    transition: var(--transition);
    white-space: nowrap;
    line-height: 1.4;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); box-shadow: 0 4px 12px rgba(244,121,32,0.3); }
.btn-secondary { background: var(--bg); color: var(--text-dark); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #c0392b; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #00a381; }
.btn-sm { padding: 6px 12px; font-size: 0.8rem; }
.btn-icon { padding: 6px 8px; }
.btn-group { display: flex; gap: 6px; flex-wrap: wrap; }
.btn-export {
    background: transparent;
    color: var(--text-light);
    border: 1px solid var(--border);
    padding: 7px 12px;
    font-size: 0.8rem;
}
.btn-export:hover { background: var(--primary-bg); color: var(--primary); border-color: var(--primary); }

/* ===========================================
   TABLES
   =========================================== */
.table-container {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid rgba(223,230,233,0.5);
}
.data-table {
    width: 100%;
    border-collapse: collapse;
}
.data-table thead th {
    background: var(--bg);
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
    font-size: 0.78rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}
.data-table tbody td {
    padding: 11px 14px;
    border-bottom: 1px solid var(--border);
    font-size: 0.87rem;
    color: var(--text-dark);
    vertical-align: middle;
}
.data-table tbody tr { transition: var(--transition); }
.data-table tbody tr:hover { background: rgba(244,121,32,0.03); }
.data-table tbody tr:last-child td { border-bottom: none; }

/* ===========================================
   BADGES
   =========================================== */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.73rem;
    font-weight: 600;
    letter-spacing: 0.2px;
    white-space: nowrap;
}
.badge-success { background: var(--success-bg); color: #00a381; }
.badge-warning { background: var(--warning-bg); color: #e17c1a; }
.badge-danger { background: var(--danger-bg); color: #c0392b; }
.badge-info { background: var(--info-bg); color: #0770c2; }
.badge-secondary { background: var(--bg); color: var(--text-light); }

/* ===========================================
   MODALS
   =========================================== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    transition: opacity 0.2s ease;
    padding: 20px;
}
.modal-overlay.active { opacity: 1; }
.modal {
    background: var(--white);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideIn 0.3s ease;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}
.modal-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-dark);
}
.modal-body { padding: 24px; }
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    background: var(--bg);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
}

/* ===========================================
   FORMS
   =========================================== */
.form-group { margin-bottom: 16px; }
.form-label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 6px;
}
.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--text-dark);
    background: var(--white);
    transition: var(--transition);
    outline: none;
}
.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(244,121,32,0.12);
}
.form-control::placeholder { color: #b2bec3; }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23636E72' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%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; }
textarea.form-control { resize: vertical; min-height: 60px; }

/* ===========================================
   TOOLBAR / SEARCH / FILTERS
   =========================================== */
.toolbar {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    align-items: flex-end;
}
.toolbar .form-control,
.toolbar .form-select { max-width: 200px; padding: 9px 14px; }
.search-box {
    position: relative;
    flex: 1;
    min-width: 200px;
    max-width: 320px;
}
.search-box i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 0.85rem;
}
.search-box .form-control { padding-left: 38px; }

/* ===========================================
   ALERTS
   =========================================== */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.88rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.alert-success { background: var(--success-bg); color: #00a381; border-left: 3px solid var(--success); }
.alert-danger { background: var(--danger-bg); color: #c0392b; border-left: 3px solid var(--danger); }
.alert-warning { background: var(--warning-bg); color: #e17c1a; border-left: 3px solid var(--warning); }
.alert-info { background: var(--info-bg); color: #0770c2; border-left: 3px solid var(--info); }

/* ===========================================
   CHARTS & ACTIVITIES
   =========================================== */
.chart-container { position: relative; height: 260px; }
.activity-list { max-height: 340px; overflow-y: auto; }
.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}
.activity-item:last-child { border-bottom: none; }
.activity-icon {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--primary-bg);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    flex-shrink: 0;
}
.activity-content { flex: 1; min-width: 0; }
.activity-text { display: block; font-size: 0.85rem; color: var(--text-dark); line-height: 1.4; }
.activity-time { display: block; font-size: 0.75rem; color: var(--text-light); margin-top: 3px; }

/* ===========================================
   EMPTY STATE
   =========================================== */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-light);
}
.empty-state i { font-size: 2.5rem; margin-bottom: 12px; display: block; opacity: 0.4; }
.empty-state p { font-size: 0.95rem; }

/* ===========================================
   UTILITIES
   =========================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.hidden { display: none !important; }
.flex { display: flex; }
.gap-1 { gap: 8px; }

/* ===========================================
   RESPONSIVE
   =========================================== */
@media (max-width: 1200px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        box-shadow: var(--shadow-xl);
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar-toggle { display: block; }
    .main-content {
        margin-left: 0;
        padding: 20px 16px;
        padding-top: 64px;
    }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .page-header { flex-direction: column; align-items: flex-start; }
    .toolbar { flex-direction: column; }
    .toolbar .form-control,
    .toolbar .form-select { max-width: 100%; }
    .search-box { max-width: 100%; }
    .form-row { grid-template-columns: 1fr; }
    .modal { margin: 10px; max-width: calc(100% - 20px); }
    .login-card { padding: 32px 24px; }
}
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    html { font-size: 14px; }
}

/* ===========================================
   PRINT
   =========================================== */
@media print {
    .sidebar, .sidebar-toggle, .btn, .toolbar, .btn-group { display: none !important; }
    .main-content { margin-left: 0; padding: 0; }
    .card, .table-container { box-shadow: none; border: 1px solid #ddd; }
    .stat-card::after { display: none; }
    .data-table tbody tr:hover { background: none; }
}

/* ============================================
   DARK THEME / MODE SOMBRE
   ============================================ */
body.dark-theme {
    --bg: #1e272e;
    --white: #2d3436;
    --text-dark: #f5f6fa;
    --text-light: #b2bec3;
    --border: #3d454d;
    --primary-bg: rgba(244, 121, 32, 0.15);
    background: var(--bg);
    color: var(--text-dark);
}
body.dark-theme .sidebar {
    background: #252b30;
    border-right-color: var(--border);
}
body.dark-theme .sidebar-header {
    border-bottom-color: var(--border);
}
body.dark-theme .sidebar-nav-item:hover,
body.dark-theme .sidebar-nav-item.active {
    background: var(--primary-bg);
}
body.dark-theme .sidebar-footer {
    border-top-color: var(--border);
}
body.dark-theme .card,
body.dark-theme .stat-card,
body.dark-theme .table-container,
body.dark-theme .modal {
    background: #2d3436;
    border-color: var(--border);
}
body.dark-theme .data-table thead th {
    background: #252b30;
    border-bottom-color: var(--border);
    color: var(--text-light);
}
body.dark-theme .data-table tbody td {
    border-bottom-color: var(--border);
    color: var(--text-dark);
}
body.dark-theme .data-table tbody tr:hover {
    background: rgba(254, 254, 254, 0.03);
}
body.dark-theme .form-control {
    background: #1e272e;
    border-color: var(--border);
    color: var(--text-dark);
}
body.dark-theme .form-control:focus {
    border-color: var(--primary);
}
body.dark-theme .modal-footer {
    background: #1e272e;
    border-top-color: var(--border);
}

/* ============================================
   SETTINGS VIEW CUSTOM STYLING
   ============================================ */
.settings-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 24px;
    align-items: start;
}
@media (max-width: 992px) {
    .settings-layout {
        grid-template-columns: 1fr;
    }
}