/* ============================================================
   DQWO CIB System — Professional Style  v2.0
   Brand palette inspired by Daqing Downhole Services Co. logo
   Primary  : #1B2D6B  (deep navy)
   Secondary: #2A5BA8  (medium blue)
   Accent   : #4D83C4  (steel blue)
   Light    : #D6E4F7  (pale blue)
   ============================================================ */

/* ── Google Font ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

/* ── CSS Variables ───────────────────────────────────────── */
:root {
    --primary:       #1B2D6B;
    --primary-mid:   #2A5BA8;
    --primary-light: #4D83C4;
    --accent:        #3A6FC0;
    --pale:          #D6E4F7;
    --pale2:         #EBF2FB;
    --gold:          #C9A84C;
    --success:       #1f8a50;
    --danger:        #c0392b;
    --warning:       #d4a017;
    --text-dark:     #1a1f36;
    --text-mid:      #4a5568;
    --text-light:    #718096;
    --border:        #d1dce8;
    --shadow-sm:     0 2px 8px rgba(27,45,107,0.10);
    --shadow-md:     0 6px 24px rgba(27,45,107,0.15);
    --shadow-lg:     0 12px 40px rgba(27,45,107,0.20);
    --radius:        12px;
    --radius-sm:     8px;
    --navbar-h:      64px;
}

/* ── Reset & Base ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

body {
    font-family: 'Inter', 'Noto Sans SC', 'Segoe UI', Arial, sans-serif;
    background: #EBF2FB;
    color: var(--text-dark);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* ── DQWO Logo Watermark Background ─────────────────────── */
body::before {
    content: '';
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(700px, 90vw);
    height: min(700px, 90vw);
    background-image: url('/assets/images/dqwo-logo.png'), url('/assets/images/dqwo-logo.svg');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.038;
    pointer-events: none;
    z-index: 0;
}

body > * { position: relative; z-index: 1; }

/* Fix Bootstrap modal z-index: page-wrapper must not create its own stacking context,
   otherwise the Bootstrap backdrop (z-index:1050) blocks interaction with the modal inside it. */
.page-wrapper { z-index: auto !important; }

/* ── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--pale2); }
::-webkit-scrollbar-thumb { background: var(--primary-light); border-radius: 3px; }

/* ── Navbar ──────────────────────────────────────────────── */
.navbar {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-mid) 60%, var(--primary-light) 100%) !important;
    box-shadow: 0 3px 16px rgba(27,45,107,0.35);
    min-height: var(--navbar-h);
    padding: 0 1.25rem;
    border-bottom: 2px solid rgba(77,131,196,0.4);
    position: sticky;
    top: 0;
    z-index: 1030;
}

.navbar-brand {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0;
}

.navbar-brand .brand-logo {
    width: 42px;
    height: 42px;
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: 0.92;
}

.navbar-brand .brand-text { line-height: 1.15; }
.navbar-brand .brand-name { font-size: 1rem; display: block; }
.navbar-brand .brand-sub  { font-size: 0.62rem; opacity: 0.75; font-weight: 400; display: block; letter-spacing: 0.04em; }

.navbar .nav-link {
    color: rgba(255,255,255,0.88) !important;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.5rem 0.85rem !important;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 5px;
}
.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: #fff !important;
    background: rgba(255,255,255,0.18);
}
.navbar .nav-link i { font-size: 0.95rem; }

.navbar .dropdown-menu {
    border: none;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    margin-top: 8px;
    min-width: 200px;
    background: #fff;
    border-top: 3px solid var(--primary-mid);
    overflow: hidden;
    padding: 0.3rem 0;
}
.navbar .dropdown-item {
    font-size: 0.875rem;
    padding: 0.6rem 1.1rem;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.15s;
}
.navbar .dropdown-item:hover { background: var(--pale2); color: var(--primary); }
.navbar .dropdown-item.text-danger:hover { background: #fff5f5; }

/* Lang switcher pill */
.lang-switcher {
    display: flex;
    align-items: center;
    gap: 4px;
    background: rgba(255,255,255,0.15);
    border-radius: 20px;
    padding: 3px 6px;
    margin-left: 6px;
}
.lang-switcher a {
    color: rgba(255,255,255,0.80);
    font-size: 0.72rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 16px;
    text-decoration: none;
    letter-spacing: 0.05em;
    transition: all 0.2s;
}
.lang-switcher a.active,
.lang-switcher a:hover {
    background: #fff;
    color: var(--primary) !important;
}
.lang-switcher span { color: rgba(255,255,255,0.4); font-size: 0.7rem; }

/* User badge in nav */
.nav-user-badge {
    font-size: 0.65rem;
    padding: 3px 8px;
    border-radius: 12px;
    font-weight: 600;
    letter-spacing: 0.04em;
    background: rgba(255,255,255,0.22);
    color: #fff;
    border: 1px solid rgba(255,255,255,0.3);
    text-transform: uppercase;
}

/* ── Page Wrapper ────────────────────────────────────────── */
.page-wrapper {
    padding: 1.5rem 1.5rem 0;
}

/* ── Page Header ─────────────────────────────────────────── */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--pale);
}
.page-header h5 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}
.page-header h5 i { color: var(--primary-light); }

/* ── Stat Cards ──────────────────────────────────────────── */
.stat-card {
    border: none;
    border-radius: var(--radius);
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s, box-shadow 0.2s;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }

.stat-card .card-body {
    padding: 1.4rem 1.2rem;
    position: relative;
    z-index: 1;
}
.stat-card .stat-icon {
    position: absolute;
    right: 16px;
    bottom: 10px;
    font-size: 3.5rem;
    opacity: 0.18;
    z-index: 0;
}
.stat-card .stat-value { font-size: 2.2rem; font-weight: 800; line-height: 1; }
.stat-card .stat-label { font-size: 0.78rem; opacity: 0.88; margin-top: 4px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.06em; }

.card.stat-employees, .stat-employees { background: linear-gradient(135deg, #1B2D6B, #2A5BA8) !important; }  /* Deep Navy  */
.card.stat-breakfast, .stat-breakfast { background: linear-gradient(135deg, #0F6E84, #1A9BB5) !important; }  /* Ocean Teal */
.card.stat-lunch,     .stat-lunch     { background: linear-gradient(135deg, #1A5276, #2471A3) !important; }  /* Steel Blue */
.card.stat-dinner,    .stat-dinner    { background: linear-gradient(135deg, #2C3E50, #4A6FA5) !important; }  /* Slate      */

/* ── Cards ───────────────────────────────────────────────── */
.card {
    border: none;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    background: #fff;
}
.card-header {
    border-radius: var(--radius) var(--radius) 0 0 !important;
    font-weight: 600;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border);
    padding: 0.9rem 1.1rem;
    background: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
}
.card-header.bg-primary { background: linear-gradient(90deg, var(--primary) 0%, var(--primary-mid) 100%) !important; }
.card-header.bg-success { background: linear-gradient(90deg, #1f8a50, #27ae60) !important; }
.card-header.bg-warning { background: linear-gradient(90deg, #b7860c, #e0a800) !important; }
.card-header.bg-danger  { background: linear-gradient(90deg, #922b21, #c0392b) !important; }
.card-header.bg-light   { background: var(--pale2) !important; color: var(--text-dark) !important; }

.card-body { padding: 1.1rem; }

/* ── Quick Action buttons ────────────────────────────────── */
.quick-action-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0.7rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.2s;
    border: 2px solid transparent;
    text-decoration: none;
}
.quick-action-btn i { font-size: 1.1rem; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
    font-weight: 500;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary-mid) 0%, var(--primary) 100%);
    border-color: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-mid) 100%);
    border-color: var(--primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(27,45,107,0.3);
}
.btn-success { background: linear-gradient(135deg, #27ae60, #1f8a50); border-color: #1f8a50; }
.btn-success:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(31,138,80,0.3); }
.btn-warning { background: linear-gradient(135deg, #f0c040, #d4a017); border-color: #d4a017; color: #1a1f36; }
.btn-danger  { background: linear-gradient(135deg, #e74c3c, #c0392b); border-color: #c0392b; }

.btn-outline-primary { border-color: var(--primary-mid); color: var(--primary-mid); }
.btn-outline-primary:hover { background: var(--primary-mid); color: #fff; }

.btn-sm { font-size: 0.78rem; padding: 0.3rem 0.7rem; }
.btn-xs { font-size: 0.72rem; padding: 0.2rem 0.5rem; }

/* ── Tables ──────────────────────────────────────────────── */
.table {
    font-size: 0.855rem;
    color: var(--text-dark);
    margin: 0;
}
.table th {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 700;
    color: var(--text-mid);
    border-bottom: 2px solid var(--border);
    background: var(--pale2);
    white-space: nowrap;
    padding: 0.65rem 0.9rem;
}
.table td { padding: 0.6rem 0.9rem; vertical-align: middle; border-color: #edf2f9; }
.table-hover tbody tr:hover { background: var(--pale2); }
.table-bordered th,
.table-bordered td { border-color: var(--border); }

.table-primary th { background: linear-gradient(90deg, var(--primary) 0%, var(--primary-mid) 100%) !important; color: #fff !important; }
.table-warning th { background: linear-gradient(90deg, #b7860c, #d4a017) !important; color: #fff !important; }

/* CACF compact */
.table-compact td, .table-compact th { padding: 0.22rem 0.35rem; font-size: 0.76rem; }

/* ── Badges ──────────────────────────────────────────────── */
.badge {
    font-weight: 600;
    font-size: 0.72rem;
    padding: 4px 9px;
    border-radius: 12px;
    letter-spacing: 0.03em;
}
.bg-primary { background: var(--primary-mid) !important; }
.bg-success { background: var(--success) !important; }
.bg-danger  { background: var(--danger) !important; }
.bg-warning { background: var(--warning) !important; color: #fff !important; }

/* ── Alerts ──────────────────────────────────────────────── */
.alert {
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    border-left: 4px solid;
}
.alert-success { background: #edfaf3; border-color: var(--success); color: #15633a; }
.alert-danger  { background: #fdf1f0; border-color: var(--danger);  color: #7b241c; }
.alert-warning { background: #fef9ea; border-color: var(--warning); color: #6d4c06; }
.alert-info    { background: var(--pale2); border-color: var(--primary-light); color: var(--primary); }

/* ── Forms ───────────────────────────────────────────────── */
.form-control, .form-select {
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    padding: 0.5rem 0.85rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    color: var(--text-dark);
}
.form-control:focus, .form-select:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(77,131,196,0.18);
    outline: none;
}
.form-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-mid);
    margin-bottom: 5px;
}
.input-group-text {
    background: var(--pale2);
    border: 1.5px solid var(--border);
    color: var(--primary-mid);
    font-size: 1rem;
}

/* ── Modals ──────────────────────────────────────────────── */
.modal-content {
    border: none;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    overflow: visible;
}
.modal-header {
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-mid) 100%);
    color: #fff;
    border: none;
    padding: 1rem 1.25rem;
    border-radius: var(--radius) var(--radius) 0 0;
}
.modal-header .btn-close { filter: invert(1); }
.modal-title { font-size: 0.95rem; font-weight: 700; }
.modal-body {
    padding: 1.25rem;
    background: #fff !important;
    color: var(--text-dark) !important;
}
.modal-body .form-control,
.modal-body .form-select {
    background-color: #fff !important;
    color: var(--text-dark) !important;
    border: 1.5px solid var(--border);
}
.modal-body .form-label {
    color: var(--text-mid) !important;
}
.modal-footer {
    border-top: 1px solid var(--border);
    padding: 0.75rem 1.25rem;
    background: var(--pale2);
    border-radius: 0 0 var(--radius) var(--radius);
}

/* ── DataTables ──────────────────────────────────────────── */
.dataTables_wrapper .dataTables_filter input {
    border-radius: 20px;
    padding: 5px 14px;
    border: 1.5px solid var(--border);
    font-size: 0.82rem;
}
.dataTables_wrapper .dataTables_filter input:focus { border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(77,131,196,0.15); }
.dataTables_wrapper .dataTables_length select { border-radius: var(--radius-sm); border: 1.5px solid var(--border); font-size: 0.82rem; }
.dataTables_wrapper { font-size: 0.85rem; }
div.dataTables_paginate .paginate_button { border-radius: 6px !important; }
div.dataTables_paginate .paginate_button.current { background: var(--primary-mid) !important; color: #fff !important; border-color: var(--primary-mid) !important; }

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
    margin-top: 2.5rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-mid) 100%);
    color: rgba(255,255,255,0.75);
    font-size: 0.78rem;
    text-align: center;
    letter-spacing: 0.03em;
}
.site-footer strong { color: #fff; }

/* ── Login Page ──────────────────────────────────────────── */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, var(--primary) 0%, var(--primary-mid) 50%, var(--primary-light) 100%);
    position: relative;
    overflow: hidden;
}

/* Cloud / radial glow behind login card */
.login-page::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 20% 30%, rgba(255,255,255,0.08) 0%, transparent 70%),
        radial-gradient(ellipse 40% 60% at 80% 80%, rgba(255,255,255,0.06) 0%, transparent 70%);
    pointer-events: none;
}

/* Watermark on login page */
.login-page::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: min(680px, 90vw);
    height: min(680px, 90vw);
    background-image: url('/assets/images/dqwo-logo.png'), url('/assets/images/dqwo-logo.svg');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.065;
    pointer-events: none;
}

.login-card {
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.6);
    border-radius: 20px;
    box-shadow: var(--shadow-lg), 0 0 0 1px rgba(77,131,196,0.15);
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 2;
}

.login-logo-wrap {
    width: 90px;
    height: 90px;
    margin: 0 auto 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-logo-wrap img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.login-title {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--primary);
    text-align: center;
    letter-spacing: 0.01em;
}
.login-subtitle {
    font-size: 0.78rem;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 1.75rem;
    margin-top: 3px;
}

.login-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    margin: 1.5rem 0;
}

/* ── Collapse cards (requests) ───────────────────────────── */
.request-card { border-bottom: 1px solid var(--border); padding: 1rem 1.1rem; }
.request-card:last-child { border-bottom: none; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
    .page-wrapper { padding: 1rem 0.75rem 0; }
    .stat-card .stat-value { font-size: 1.8rem; }
    .login-card { padding: 1.75rem 1.25rem; }
    .navbar-brand .brand-sub { display: none; }
}

/* ── Print ───────────────────────────────────────────────── */
@media print {
    .navbar, .site-footer, .btn:not(.print-btn), form, .lang-switcher { display: none !important; }
    .card { box-shadow: none !important; border: 1px solid #dee2e6 !important; }
    body, body::before, body::after { background: #fff; opacity: 1; }
    body::before { display: none; }
}

/* ── Utilities ───────────────────────────────────────────── */
.text-primary-brand { color: var(--primary) !important; }
.bg-pale { background: var(--pale2) !important; }
.border-brand { border-color: var(--primary-light) !important; }
.fw-700 { font-weight: 700; }
.rounded-brand { border-radius: var(--radius) !important; }
.shadow-brand { box-shadow: var(--shadow-md) !important; }