:root {
    --bg-primary: #080c14;
    --bg-secondary: #0f1626;
    --bg-card: rgba(15, 22, 38, 0.7);
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-glass-focus: rgba(59, 130, 246, 0.4);
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --color-primary: #3b82f6;
    --color-primary-glow: rgba(59, 130, 246, 0.15);
    --color-accent: #06b6d4;
    --color-accent-glow: rgba(6, 182, 212, 0.15);
    --color-success: #10b981;
    --color-success-glow: rgba(16, 185, 129, 0.15);
    --color-warning: #f59e0b;
    --color-warning-glow: rgba(245, 158, 11, 0.15);
    --color-danger: #ef4444;
    --color-danger-glow: rgba(239, 68, 68, 0.15);
    
    --sidebar-width: 280px;
    --transition-speed: 0.25s;
}

/* Base Styles */
html, body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.text-subtitle {
    color: #cbd5e1 !important;
    font-size: 0.95rem;
}

/* Contrast overrides for dark theme readability */
.text-muted, small.text-muted, span.text-muted, div.text-muted, p.text-muted {
    color: #cbd5e1 !important;
}

.text-secondary, span.text-secondary, div.text-secondary {
    color: #e2e8f0 !important;
}

/* Scrollbar customization */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #334155;
}

/* Glassmorphism Cards */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

.glass-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 15px 35px -5px rgba(0, 0, 0, 0.6), 0 0 20px 0 var(--color-primary-glow);
}

.glass-card-interactive:hover {
    transform: translateY(-4px);
    cursor: pointer;
}

/* Layout Framework */
.page {
    display: flex;
    flex-direction: row;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background: #06090f;
    border-right: 1px solid var(--border-glass);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}

main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow-y: auto;
}

.top-row {
    background-color: rgba(6, 9, 15, 0.5);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-glass);
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 0 2rem;
    flex-shrink: 0;
}

.content {
    padding: 2rem;
    flex-grow: 1;
}

/* Navigation Menu */
.navbar-brand {
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    font-size: 1.3rem;
    letter-spacing: -0.03em;
    color: var(--text-primary) !important;
    background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary) !important;
    padding: 0.75rem 1rem !important;
    margin: 0.25rem 0.75rem;
    border-radius: 10px;
    font-weight: 500;
    transition: all var(--transition-speed) ease;
}

.nav-link:hover {
    color: var(--text-primary) !important;
    background-color: rgba(255, 255, 255, 0.04);
    transform: translateX(4px);
}

.nav-link.active {
    color: var(--text-primary) !important;
    background: linear-gradient(135deg, var(--color-primary) 0%, rgba(59, 130, 246, 0.4) 100%) !important;
    box-shadow: 0 4px 15px var(--color-primary-glow);
}

.nav-link i {
    font-size: 1.15rem;
}

/* Status Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-weight: 600;
    font-size: 0.72rem;
    padding: 0.25rem 0.65rem;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-width: 1px;
    border-style: solid;
    white-space: nowrap;
}

.status-badge-draft {
    background-color: #1e293b;
    border-color: #334155;
    color: #94a3b8;
}

.status-badge-pending {
    background-color: var(--color-warning-glow);
    border-color: rgba(245, 158, 11, 0.3);
    color: var(--color-warning);
}

.status-badge-confirmed {
    background-color: var(--color-accent-glow);
    border-color: rgba(6, 182, 212, 0.3);
    color: var(--color-accent);
}

.status-badge-assigned {
    background-color: var(--color-primary-glow);
    border-color: rgba(59, 130, 246, 0.3);
    color: var(--color-primary);
}

.status-badge-completed {
    background-color: var(--color-success-glow);
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--color-success);
}

/* Tables */
.custom-table-container {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border-glass);
}

.custom-table {
    width: 100%;
    border-collapse: collapse;
    background: transparent;
}

.custom-table th {
    background-color: rgba(15, 22, 38, 0.9);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-glass);
    text-align: left;
}

.custom-table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-glass);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.custom-table tr:hover td {
    background-color: rgba(255, 255, 255, 0.03);
}

/* Custom UI Inputs & Buttons */
.custom-input {
    background-color: rgba(6, 9, 15, 0.6);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    border-radius: 10px;
    padding: 0.6rem 1rem;
    transition: all var(--transition-speed) ease;
}

.custom-input:focus {
    background-color: rgba(6, 9, 15, 0.8);
    border-color: var(--color-primary);
    box-shadow: 0 0 10px var(--color-primary-glow);
    outline: none;
    color: var(--text-primary);
}

.custom-btn {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    border-radius: 10px;
    padding: 0.6rem 1.5rem;
    transition: all var(--transition-speed) ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    border: 1px solid transparent;
}

.custom-btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, #2563eb 100%);
    color: white;
    box-shadow: 0 4px 15px var(--color-primary-glow);
}

.custom-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.custom-btn-accent {
    background: linear-gradient(135deg, var(--color-accent) 0%, #0891b2 100%);
    color: white;
    box-shadow: 0 4px 15px var(--color-accent-glow);
}

.custom-btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.4);
}

.custom-btn-secondary {
    background-color: transparent;
    border-color: var(--border-glass);
    color: var(--text-secondary);
}

.custom-btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
}

/* Dashboard Summary Cards Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.summary-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.summary-card .icon-container {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* Modal styling */
.custom-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(4, 6, 10, 0.85);
    backdrop-filter: blur(8px);
    z-index: 1050;
    display: flex;
    align-items: center;
    justify-content: center;
}

.custom-modal {
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    background: #0f1626;
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: modalFadeIn var(--transition-speed) ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile & Tablet Responsive Rules for Smartphones */
@media (max-width: 991.98px) {
    .page {
        flex-direction: column;
    }

    .sidebar {
        width: 100% !important;
        border-right: none;
        border-bottom: 1px solid var(--border-glass);
    }

    main {
        height: auto !important;
        min-height: 100vh;
        overflow-y: visible;
    }

    .top-row {
        height: auto !important;
        padding: 0.75rem 1rem !important;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .content {
        padding: 1rem 0.75rem !important;
    }

    .dashboard-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: 1rem;
    }
}

@media (max-width: 576px) {
    body {
        font-size: 14px;
    }

    h1 { font-size: 1.5rem !important; }
    h2 { font-size: 1.3rem !important; }
    h3 { font-size: 1.15rem !important; }

    .glass-card {
        padding: 1rem !important;
        border-radius: 12px;
    }

    .custom-modal-backdrop {
        padding: 8px !important;
    }

    .custom-modal {
        max-width: 100% !important;
        width: 100% !important;
        max-height: 94vh !important;
        border-radius: 12px;
    }

    .modal-dialog {
        margin: 0.25rem auto !important;
        max-width: 98% !important;
    }

    /* Prevent mobile input auto-zoom on iOS */
    input, select, textarea, .custom-input {
        font-size: 16px !important;
        min-height: 44px;
    }

    .custom-btn {
        min-height: 44px;
        padding: 0.6rem 1rem;
    }

    .custom-table-container {
        -webkit-overflow-scrolling: touch;
        border-radius: 8px;
    }

    .custom-table th, .custom-table td {
        padding: 0.6rem 0.65rem !important;
        font-size: 0.8rem;
    }
}