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

:root {
    /* QTAIR Brand Color Palette - Signature QTAIR Green Theme */
    --bg-main: #f8fafc;
    --card-bg: #ffffff;
    
    --qtair-green-dark: #064e3b;
    --qtair-green: #047857;
    --qtair-green-light: #059669;
    --qtair-gold: #f59e0b;
    
    --header-gradient: linear-gradient(135deg, #064e3b 0%, #047857 60%, #0d9488 100%);

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;

    --brand-blue: #047857;
    --brand-blue-hover: #065f46;
    --brand-blue-light: #ecfdf5;
    --brand-gradient: linear-gradient(135deg, #047857 0%, #065f46 100%);

    --success: #10b981;
    --success-light: #ecfdf5;
    --warning: #f59e0b;
    --warning-light: #fffbe6;
    --danger: #ef4444;
    --danger-light: #fef2f2;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;

    --shadow-subtle: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 12px 28px -6px rgba(15, 23, 42, 0.08), 0 4px 12px -2px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Navbar - QTAIR Signature Green Header */
.app-header {
    background: var(--header-gradient);
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    padding: 1.1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 10px 30px rgba(4, 120, 87, 0.25);
}

.header-container {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.logo-wrapper {
    background: #ffffff;
    padding: 0.55rem 0.95rem;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.brand-logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.header-title-box {
    display: flex;
    flex-direction: column;
}

.brand-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: #fef08a;
    background: rgba(254, 240, 138, 0.15);
    padding: 0.2rem 0.65rem;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    width: fit-content;
    margin-bottom: 0.2rem;
    border: 1px solid rgba(254, 240, 138, 0.3);
}

.header-title-box h1 {
    font-size: 1.35rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.header-title-box p {
    font-size: 0.82rem;
    color: #a7f3d0;
    margin-top: 2px;
}

/* Header Actions */
.btn-upload-trigger {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.92rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    box-shadow: 0 4px 18px rgba(4, 120, 87, 0.4);
    transition: all 0.25s ease;
}

.btn-upload-trigger:hover {
    transform: translateY(-2px);
    background: linear-gradient(135deg, #047857 0%, #065f46 100%);
    box-shadow: 0 8px 25px rgba(4, 120, 87, 0.55);
}

/* Main Layout */
.main-layout {
    max-width: 1440px;
    margin: 1.75rem auto;
    padding: 0 1.5rem;
    width: 100%;
    flex: 1;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.stat-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 1.35rem 1.6rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-hover);
}

.stat-info .stat-value {
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.stat-info .stat-label {
    font-size: 0.84rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-top: 0.35rem;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.45rem;
}

.stat-card.total .stat-icon { background: var(--brand-blue-light); color: var(--brand-blue); }
.stat-card.active .stat-icon { background: var(--success-light); color: var(--success); }
.stat-card.expiring .stat-icon { background: #fef3c7; color: var(--warning); }
.stat-card.expired .stat-icon { background: var(--danger-light); color: var(--danger); }

/* Filter Section - Single Row Design */
.filter-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 1.2rem 1.6rem;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-subtle);
    margin-bottom: 1.5rem;
}

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.9rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid #f1f5f9;
}

.filter-title {
    font-size: 0.95rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.filter-title i {
    color: var(--brand-blue);
    background: var(--brand-blue-light);
    width: 30px;
    height: 30px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
}

.btn-reset-filter {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.btn-reset-filter:hover {
    background: #e2e8f0;
    color: var(--text-primary);
}

/* 1 Single Row Filter Grid */
.filter-grid {
    display: grid;
    grid-template-columns: 1.4fr 1.2fr 1fr 1fr 1fr 1fr;
    gap: 0.75rem;
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.filter-group label {
    font-size: 0.72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.form-control {
    width: 100%;
    padding: 0.62rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 0.85rem;
    background-color: #f8fafc;
    color: var(--text-primary);
    outline: none;
    transition: all 0.2s ease;
    text-overflow: ellipsis;
}

.form-control:focus {
    background-color: #ffffff;
    border-color: var(--brand-blue);
    box-shadow: 0 0 0 3px rgba(4, 120, 87, 0.18);
}

/* Table Section */
.contracts-section {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-subtle);
    overflow: hidden;
}

.contracts-header {
    padding: 1.25rem 1.6rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #ffffff;
}

.contracts-header h2 {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-primary);
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.88rem;
}

.table th {
    background: #f8fafc;
    color: var(--text-secondary);
    font-weight: 800;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 1rem 1.4rem;
    border-bottom: 1px solid var(--border-color);
}

.table td {
    padding: 1.1rem 1.4rem;
    border-bottom: 1px solid #f1f5f9;
    vertical-align: middle;
    color: var(--text-primary);
}

.table tbody tr {
    transition: background 0.15s ease;
}

.table tbody tr:hover {
    background: #f8fafc;
}

/* Partner Avatar Icon */
.partner-cell {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.partner-avatar {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: #047857;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 800;
    flex-shrink: 0;
}

/* Badges & Status pills */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.75rem;
    border-radius: 20px;
    font-size: 0.76rem;
    font-weight: 700;
    white-space: nowrap;
}

.badge-cat-dulich { background: #e0f2fe; color: #0369a1; border: 1px solid #bae6fd; }
.badge-cat-xkld { background: #f3e8ff; color: #7e22ce; border: 1px solid #e9d5ff; }
.badge-cat-doanhnghiep { background: #ecfdf5; color: #047857; border: 1px solid #a7f3d0; }
.badge-cat-ngoaive { background: #fffbe6; color: #b45309; border: 1px solid #fde68a; }
.badge-cat-vemaybay { background: #e0e7ff; color: #4338ca; border: 1px solid #c7d2fe; }

.badge-type-nguyentac {
    background: #f1f5f9;
    color: #334155;
    border: 1px solid #cbd5e1;
}

.badge-type-kinhte {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.status-active {
    background: var(--success-light);
    color: var(--success);
    border: 1px solid #a7f3d0;
}

.status-expiring {
    background: var(--warning-light);
    color: var(--warning);
    border: 1px solid #fde68a;
}

.status-expired {
    background: var(--danger-light);
    color: var(--danger);
    border: 1px solid #fecaca;
}

/* Action Buttons */
.btn-action {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
}

.btn-action:hover {
    background: var(--brand-blue);
    color: #ffffff;
    border-color: var(--brand-blue);
    box-shadow: 0 4px 10px rgba(4, 120, 87, 0.3);
}

.btn-action.view:hover {
    background: #0284c7;
    color: #ffffff;
    border-color: #0284c7;
    box-shadow: 0 4px 10px rgba(2, 132, 199, 0.3);
}

.btn-action.delete:hover {
    background: var(--danger);
    color: #ffffff;
    border-color: var(--danger);
    box-shadow: 0 4px 10px rgba(239, 68, 68, 0.3);
}

/* Modal UI */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
    padding: 1rem;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-card {
    background: var(--card-bg);
    width: 100%;
    max-width: 680px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transform: translateY(20px);
    transition: transform 0.25s ease;
    border: 1px solid var(--border-color);
}

.modal-overlay.active .modal-card {
    transform: translateY(0);
}

.modal-header {
    padding: 1.25rem 1.6rem;
    background: #f8fafc;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.15rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.btn-close-modal {
    background: transparent;
    border: none;
    font-size: 1.2rem;
    color: var(--text-muted);
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.btn-close-modal:hover {
    background: #e2e8f0;
    color: var(--text-primary);
}

.modal-body {
    padding: 1.6rem;
    max-height: calc(85vh - 120px);
    overflow-y: auto;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.1rem;
}

.form-group-full {
    grid-column: span 2;
}

.required-star {
    color: var(--danger);
    margin-left: 2px;
}

.file-upload-box {
    border: 2px dashed #cbd5e1;
    border-radius: var(--radius-md);
    padding: 1.6rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.25s ease;
    background: #f8fafc;
}

.file-upload-box:hover {
    border-color: var(--brand-blue);
    background: var(--brand-blue-light);
}

.file-upload-icon {
    font-size: 2.2rem;
    color: var(--brand-blue);
    margin-bottom: 0.4rem;
}

.modal-footer {
    padding: 1.1rem 1.6rem;
    background: #f8fafc;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

.btn-secondary {
    background: #e2e8f0;
    color: var(--text-secondary);
    border: none;
    padding: 0.65rem 1.3rem;
    border-radius: var(--radius-md);
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-secondary:hover {
    background: #cbd5e1;
}

.btn-primary {
    background: var(--brand-gradient);
    color: #ffffff;
    border: none;
    padding: 0.65rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s;
    box-shadow: 0 4px 14px rgba(4, 120, 87, 0.35);
}

.btn-primary:hover {
    box-shadow: 0 6px 18px rgba(4, 120, 87, 0.5);
}

/* Empty State */
.empty-state {
    padding: 3.5rem 1.5rem;
    text-align: center;
    color: var(--text-muted);
}

.empty-icon {
    font-size: 3.5rem;
    margin-bottom: 0.85rem;
    color: var(--brand-blue);
    opacity: 0.7;
}

/* Toast Container */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    background: #ffffff;
    border-radius: var(--radius-md);
    padding: 0.9rem 1.35rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-left: 4px solid var(--brand-blue);
    animation: slideInRight 0.3s ease;
    font-size: 0.9rem;
    font-weight: 600;
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Responsive Media Queries */
@media (max-width: 1200px) {
    .filter-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.85rem;
    }
}

@media (max-width: 768px) {
    .filter-grid {
        grid-template-columns: 1fr;
    }
    .form-grid {
        grid-template-columns: 1fr;
    }
    .form-group-full {
        grid-column: span 1;
    }
    .header-container {
        flex-direction: column;
        align-items: flex-start;
    }
}