/* ==========================================================================
   LIMS (Laboratory Information Management System) - Modern Theme
   ========================================================================== */

:root {
    --bg-main: #0b1120;
    --bg-card: rgba(18, 26, 44, 0.75);
    --bg-card-hover: rgba(28, 40, 68, 0.85);
    --bg-input: #0e172a;
    --border-color: rgba(56, 189, 248, 0.15);
    --border-focus: #38bdf8;
    
    --primary: #0ea5e9;
    --primary-glow: rgba(14, 165, 233, 0.35);
    --secondary: #6366f1;
    --accent: #06b6d4;
    --success: #10b981;
    --success-glow: rgba(16, 185, 129, 0.3);
    --warning: #f59e0b;
    --warning-glow: rgba(245, 158, 11, 0.3);
    --danger: #ef4444;
    --danger-glow: rgba(239, 68, 68, 0.3);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    
    --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.05);
    --shadow-glow: 0 0 25px var(--primary-glow);
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-main);
    background-image: 
        radial-gradient(at 0% 0%, rgba(14, 165, 233, 0.12) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(99, 102, 241, 0.12) 0px, transparent 50%),
        radial-gradient(at 50% 50%, rgba(6, 182, 212, 0.05) 0px, transparent 60%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: #090e1a;
}
::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #334155;
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.navbar {
    background: rgba(11, 17, 32, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 0.75rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
}

.brand-icon-box {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, #0ea5e9, #6366f1);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 15px var(--primary-glow);
}

.brand-icon-box svg {
    width: 24px;
    height: 24px;
    color: #ffffff;
}

.brand-text h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(to right, #38bdf8, #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-text span {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    font-weight: 600;
    display: block;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-links a:hover, .nav-links a.active {
    color: #ffffff;
    background: rgba(56, 189, 248, 0.12);
    border: 1px solid rgba(56, 189, 248, 0.25);
}

.nav-links a svg {
    width: 18px;
    height: 18px;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.35rem 0.85rem;
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-full);
}

.avatar-circle {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: #fff;
    text-transform: uppercase;
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
}

.user-info-text {
    line-height: 1.2;
}

.user-info-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
}

.user-info-role {
    font-size: 0.7rem;
    color: var(--accent);
    text-transform: capitalize;
}

.btn-logout {
    padding: 0.45rem 0.9rem;
    border-radius: var(--radius-sm);
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    transition: all var(--transition-fast);
}

.btn-logout:hover {
    background: rgba(239, 68, 68, 0.3);
    color: #ffffff;
    box-shadow: 0 0 12px var(--danger-glow);
}

/* ==========================================================================
   Main Layout & Containers
   ========================================================================== */
.main-wrapper {
    flex: 1;
    padding: 2rem;
    max-width: 1440px;
    width: 100%;
    margin: 0 auto;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-title-box h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.page-title-box p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

.page-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

/* Glassmorphism Card */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-card);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: all var(--transition-smooth);
}

.glass-card:hover {
    border-color: rgba(56, 189, 248, 0.3);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-primary {
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    color: #ffffff;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
}

.btn-secondary {
    background: rgba(51, 65, 85, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(71, 85, 105, 0.9);
    color: #ffffff;
}

.btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
    color: #ffffff;
    box-shadow: 0 4px 15px var(--success-glow);
}

.btn-success:hover {
    background: linear-gradient(135deg, #34d399, #10b981);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.5);
}

.btn-warning {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #ffffff;
    box-shadow: 0 4px 15px var(--warning-glow);
}

.btn-warning:hover {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: #ffffff;
    box-shadow: 0 4px 15px var(--danger-glow);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #f87171, #ef4444);
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
    border-radius: 6px;
}

/* Badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.35);
    color: #34d399;
}

.badge-warning {
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(245, 158, 11, 0.35);
    color: #fbbf24;
}

.badge-danger {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.35);
    color: #f87171;
}

.badge-info {
    background: rgba(14, 165, 233, 0.15);
    border: 1px solid rgba(14, 165, 233, 0.35);
    color: #38bdf8;
}

.badge-primary {
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.35);
    color: #818cf8;
}

.badge-draft, .badge-secondary {
    background: rgba(148, 163, 184, 0.15);
    border: 1px solid rgba(148, 163, 184, 0.3);
    color: #cbd5e1;
}

/* Filter & Search Toolbar */
.toolbar-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr auto;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

.input-icon-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon-group svg {
    position: absolute;
    left: 1rem;
    width: 18px;
    height: 18px;
    color: var(--text-muted);
    pointer-events: none;
}

.input-icon-group input {
    padding-left: 2.75rem !important;
}

.form-control {
    width: 100%;
    padding: 0.65rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

select.form-control {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px;
    padding-right: 2.5rem;
    appearance: none;
}

/* Tables */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
}

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

.custom-table th {
    background: rgba(15, 23, 42, 0.9);
    padding: 0.9rem 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.custom-table td {
    padding: 0.9rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    vertical-align: middle;
}

.custom-table tr:hover td {
    background: rgba(56, 189, 248, 0.04);
}

.actions-cell {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.btn-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 0 10px var(--primary-glow);
}

.btn-icon.delete:hover {
    background: var(--danger);
    border-color: var(--danger);
    box-shadow: 0 0 10px var(--danger-glow);
}

/* Flash Messages / Alerts */
.alert-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.9rem 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    border: 1px solid transparent;
}

.alert-success {
    background: rgba(16, 185, 129, 0.12);
    border-color: rgba(16, 185, 129, 0.3);
    color: #6ee7b7;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.12);
    border-color: rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.alert-warning {
    background: rgba(245, 158, 11, 0.12);
    border-color: rgba(245, 158, 11, 0.3);
    color: #fde68a;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(2, 6, 23, 0.75);
    backdrop-filter: blur(8px);
    z-index: 999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-box {
    background: #0f172a;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8), 0 0 30px rgba(56, 189, 248, 0.1);
    width: 100%;
    max-width: 720px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: scale(0.95);
    transition: transform var(--transition-smooth);
}

.modal-overlay.active .modal-box {
    transform: scale(1);
}

.modal-header {
    padding: 1.25rem 1.75rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(30, 41, 59, 0.4);
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--danger);
}

.modal-body {
    padding: 1.75rem;
}

.modal-footer {
    padding: 1.25rem 1.75rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    background: rgba(30, 41, 59, 0.2);
}

/* Form Layout inside Modals */
.form-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-grid-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.45rem;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.form-group small {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Toast Notifications */
#toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.9rem 1.25rem;
    color: var(--text-primary);
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 280px;
    animation: toastSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.toast.toast-success {
    border-color: rgba(16, 185, 129, 0.5);
    box-shadow: 0 0 15px var(--success-glow);
}

.toast.toast-danger {
    border-color: rgba(239, 68, 68, 0.5);
    box-shadow: 0 0 15px var(--danger-glow);
}

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

/* Footer */
.footer {
    margin-top: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 1.25rem 2rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.db-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.25);
    color: var(--primary);
}

.db-pill.connected {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--success);
}