/* ============================================
   LAB TEST DIRECTORY - REFINED PROFESSIONAL THEME
   Elegant Gold & Navy Design
   ============================================ */

:root {
    --primary-navy: #29468F;
    --primary-navy-dark: #1d3166;
    --primary-navy-light: #3d5ba8;
    --accent-gold: #a47316;
    --accent-gold-dark: #8a5f0d;
    --accent-gold-light: #c99535;
    --pure-white: #FFFFFF;
    --off-white: #fafbfc;
    --light-gray: #f5f6f8;
    --medium-gray: #e8eaed;
    --dark-gray: #4a5568;
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --success-green: #2d8659;
    --danger-red: #c53030;
    --warning-amber: #d69e2e;
    --shadow-sm: 0 2px 4px rgba(41, 70, 143, 0.08);
    --shadow-md: 0 4px 12px rgba(41, 70, 143, 0.12);
    --shadow-lg: 0 8px 24px rgba(41, 70, 143, 0.16);
    --shadow-xl: 0 12px 32px rgba(41, 70, 143, 0.2);
}

/* ============================================
   GLOBAL STYLES
   ============================================ */
body {
    background-color: var(--off-white);
    background-image: linear-gradient(135deg, rgba(41, 70, 143, 0.02) 0%, transparent 50%), radial-gradient(circle at 80% 20%, rgba(164, 115, 22, 0.03) 0%, transparent 40%);
    background-attachment: fixed;
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* ============================================
   NAVIGATION BAR
   ============================================ */
.navbar {
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-navy-dark) 100%) !important;
    box-shadow: 0 2px 12px rgba(41, 70, 143, 0.25);
    padding: 0.875rem 0;
    border-bottom: 3px solid var(--accent-gold);
}

.navbar-brand {
    color: var(--pure-white) !important;
    font-weight: 700;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.625rem;
    transition: all 0.3s ease;
    letter-spacing: -0.02em;
}

    .navbar-brand:hover {
        color: var(--accent-gold-light) !important;
        transform: translateX(3px);
    }

    .navbar-brand i {
        font-size: 1.75rem;
        color: var(--accent-gold);
        filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
    }

.navbar-light .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.92) !important;
    font-weight: 500;
    padding: 0.5rem 1.125rem !important;
    border-radius: 6px;
    transition: all 0.25s ease;
    margin: 0 0.25rem;
    position: relative;
}

    .navbar-light .navbar-nav .nav-link:hover,
    .navbar-light .navbar-nav .nav-link:focus {
        background: rgba(164, 115, 22, 0.15);
        color: var(--accent-gold-light) !important;
    }

    .navbar-light .navbar-nav .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background: var(--accent-gold);
        transition: width 0.3s ease;
    }

    .navbar-light .navbar-nav .nav-link:hover::after {
        width: 80%;
    }

.navbar-light .navbar-nav .dropdown-toggle {
    color: rgba(255, 255, 255, 0.92) !important;
}

.dropdown-menu {
    border: 1px solid var(--medium-gray);
    box-shadow: var(--shadow-xl);
    border-radius: 8px;
    padding: 0.5rem;
    margin-top: 0.5rem;
    animation: dropdownSlide 0.25s ease;
}

@keyframes dropdownSlide {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item {
    border-radius: 6px;
    padding: 0.625rem 1rem;
    margin: 0.125rem 0;
    transition: all 0.2s ease;
    font-weight: 500;
    color: var(--text-primary);
}

    .dropdown-item:hover,
    .dropdown-item:focus {
        background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-navy-light) 100%);
        color: var(--pure-white) !important;
        transform: translateX(4px);
    }

    .dropdown-item i {
        width: 22px;
        margin-right: 0.625rem;
        color: var(--accent-gold);
    }

    .dropdown-item:hover i {
        color: var(--accent-gold-light);
    }

.dropdown-header {
    font-weight: 700;
    color: var(--primary-navy);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.625rem 1rem 0.375rem;
    border-bottom: 2px solid var(--accent-gold);
    margin-bottom: 0.375rem;
}

.dropdown-divider {
    margin: 0.5rem 0;
    border-top: 1px solid var(--medium-gray);
}

/* ============================================
   CARDS & CONTAINERS
   ============================================ */
.card {
    border: 1px solid var(--medium-gray);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--pure-white);
}

    .card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-xl);
        border-color: var(--accent-gold);
    }

.card-header {
    border: none;
    font-weight: 700;
    padding: 1.25rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-navy-dark) 100%);
    color: var(--pure-white);
    border-bottom: 3px solid var(--accent-gold);
    position: relative;
}

    .card-header::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 4px;
        height: 100%;
        background: var(--accent-gold);
    }

    .card-header.bg-primary {
        background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-navy-dark) 100%) !important;
        border-bottom-color: var(--accent-gold);
    }

    .card-header.bg-warning {
        background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-dark) 100%) !important;
        border-bottom-color: var(--primary-navy);
    }

    .card-header.bg-info {
        background: linear-gradient(135deg, var(--primary-navy-light) 0%, var(--primary-navy) 100%) !important;
        border-bottom-color: var(--accent-gold-light);
    }

    .card-header.bg-success {
        background: linear-gradient(135deg, var(--success-green) 0%, #24694b 100%) !important;
        border-bottom-color: var(--accent-gold);
    }

    .card-header.bg-danger {
        background: linear-gradient(135deg, var(--danger-red) 0%, #9b2c2c 100%) !important;
        border-bottom-color: var(--accent-gold);
    }

    .card-header.bg-secondary {
        background: linear-gradient(135deg, var(--dark-gray) 0%, #2d3748 100%) !important;
        border-bottom-color: var(--accent-gold);
    }

    .card-header.bg-dark {
        background: linear-gradient(135deg, #1a202c 0%, #171923 100%) !important;
        border-bottom-color: var(--accent-gold);
    }

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background-color: var(--light-gray);
    border: none;
    border-top: 1px solid var(--medium-gray);
    padding: 1rem 1.5rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    border-radius: 8px;
    font-weight: 600;
    padding: 0.625rem 1.5rem;
    transition: all 0.25s ease;
    border: none;
    box-shadow: var(--shadow-sm);
    letter-spacing: 0.01em;
}

    .btn:hover {
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }

    .btn:active {
        transform: translateY(0);
    }

.btn-primary {
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-navy-dark) 100%);
    color: var(--pure-white);
    border: 2px solid transparent;
}

    .btn-primary:hover {
        background: linear-gradient(135deg, var(--primary-navy-light) 0%, var(--primary-navy) 100%);
        border-color: var(--accent-gold);
    }

.btn-success {
    background: linear-gradient(135deg, var(--success-green) 0%, #24694b 100%);
    color: var(--pure-white);
}

    .btn-success:hover {
        background: linear-gradient(135deg, #35a071 0%, var(--success-green) 100%);
    }

.btn-danger {
    background: linear-gradient(135deg, var(--danger-red) 0%, #9b2c2c 100%);
    color: var(--pure-white);
}

    .btn-danger:hover {
        background: linear-gradient(135deg, #e53e3e 0%, var(--danger-red) 100%);
    }

.btn-warning {
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-dark) 100%);
    color: var(--pure-white);
}

    .btn-warning:hover {
        background: linear-gradient(135deg, var(--accent-gold-light) 0%, var(--accent-gold) 100%);
        color: var(--pure-white);
    }

.btn-info {
    background: linear-gradient(135deg, var(--primary-navy-light) 0%, var(--primary-navy) 100%);
    color: var(--pure-white);
}

    .btn-info:hover {
        background: linear-gradient(135deg, #4a6abf 0%, var(--primary-navy-light) 100%);
        color: var(--pure-white);
    }

.btn-outline-primary {
    border: 2px solid var(--primary-navy);
    color: var(--primary-navy);
    background: transparent;
}

    .btn-outline-primary:hover {
        background: var(--primary-navy);
        color: var(--pure-white);
    }

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1.125rem;
}

.btn i {
    margin-right: 0.5rem;
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.875rem;
    box-shadow: var(--shadow-sm);
    letter-spacing: 0.02em;
}

    .badge.bg-info {
        background: linear-gradient(135deg, var(--primary-navy-light) 0%, var(--primary-navy) 100%) !important;
        color: var(--pure-white);
    }

    .badge.bg-success {
        background: linear-gradient(135deg, var(--success-green) 0%, #24694b 100%) !important;
        color: var(--pure-white);
    }

    .badge.bg-warning {
        background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-dark) 100%) !important;
        color: var(--pure-white);
    }

    .badge.bg-danger {
        background: linear-gradient(135deg, var(--danger-red) 0%, #9b2c2c 100%) !important;
        color: var(--pure-white);
    }

    .badge.bg-primary {
        background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-navy-dark) 100%) !important;
        color: var(--pure-white);
    }

    .badge.bg-secondary {
        background: linear-gradient(135deg, var(--dark-gray) 0%, #2d3748 100%) !important;
        color: var(--pure-white);
    }

/* ============================================
   TABLES
   ============================================ */
.table {
    border-radius: 8px;
    overflow: hidden;
}

    .table thead {
        background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-navy-dark) 100%);
    }

        .table thead th {
            border: none;
            font-weight: 700;
            text-transform: uppercase;
            font-size: 0.8125rem;
            letter-spacing: 0.08em;
            color: var(--pure-white);
            padding: 1rem 1.25rem;
            border-bottom: 3px solid var(--accent-gold);
            background: var(--primary-navy-dark);
        }

    .table tbody tr {
        transition: all 0.2s ease;
        border-bottom: 1px solid var(--medium-gray);
        background: var(--pure-white);
    }

        .table tbody tr:hover {
            background-color: var(--light-gray);
            box-shadow: inset 4px 0 0 var(--accent-gold);
        }

    .table tbody td {
        padding: 1rem 1.25rem;
        vertical-align: middle;
        color: var(--text-primary);
    }

.table-striped tbody tr:nth-of-type(odd) {
    background-color: var(--off-white);
}

/* ============================================
   FORMS
   ============================================ */
.form-label {
    font-weight: 600;
    color: var(--primary-navy);
    margin-bottom: 0.5rem;
    font-size: 0.9375rem;
}

.form-control, .form-select {
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: all 0.25s ease;
    font-size: 1rem;
    background-color: var(--pure-white);
}

    .form-control:focus, .form-select:focus {
        border-color: var(--primary-navy);
        box-shadow: 0 0 0 0.2rem rgba(41, 70, 143, 0.15);
        background-color: var(--pure-white);
    }

    .form-control:hover, .form-select:hover {
        border-color: var(--accent-gold);
    }

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ============================================
   ALERTS
   ============================================ */
.alert {
    border: none;
    border-radius: 8px;
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow-sm);
    animation: alertSlide 0.3s ease;
    border-left: 4px solid;
}

@keyframes alertSlide {
    from {
        opacity: 0;
        transform: translateX(-16px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.alert-success {
    background: linear-gradient(135deg, #e6f4ed 0%, #d4eddf 100%);
    color: #1a5235;
    border-left-color: var(--success-green);
}

.alert-danger {
    background: linear-gradient(135deg, #fdeaea 0%, #fbd5d5 100%);
    color: #7a1f1f;
    border-left-color: var(--danger-red);
}

.alert-warning {
    background: linear-gradient(135deg, #fef5e7 0%, #fcecc8 100%);
    color: #6b4d0a;
    border-left-color: var(--accent-gold);
}

.alert-info {
    background: linear-gradient(135deg, #e8eef8 0%, #d6e1f5 100%);
    color: var(--primary-navy-dark);
    border-left-color: var(--primary-navy);
}

/* ============================================
   PAGE HEADERS
   ============================================ */
.display-5 {
    font-weight: 800;
    color: var(--primary-navy);
    position: relative;
    display: inline-block;
    padding-bottom: 0.5rem;
}

    .display-5::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 60px;
        height: 4px;
        background: linear-gradient(90deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
        border-radius: 2px;
    }

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--primary-navy);
}

h1 {
    letter-spacing: -0.02em;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.shadow-sm {
    box-shadow: var(--shadow-sm) !important;
}

.shadow {
    box-shadow: var(--shadow-md) !important;
}

.shadow-lg {
    box-shadow: var(--shadow-lg) !important;
}

.text-accent {
    color: var(--accent-gold) !important;
}

.bg-accent {
    background-color: var(--accent-gold) !important;
    color: var(--pure-white) !important;
}

.border-accent {
    border-color: var(--accent-gold) !important;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-navy-dark) 100%);
    color: var(--pure-white);
    padding: 2.5rem 0;
    margin-top: 4rem;
    border-top: 4px solid var(--accent-gold);
}

    .footer a {
        color: var(--accent-gold-light);
        text-decoration: none;
        font-weight: 600;
        transition: all 0.3s ease;
        position: relative;
    }

        .footer a:hover {
            color: var(--pure-white);
        }

        .footer a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--pure-white);
            transition: width 0.3s ease;
        }

        .footer a:hover::after {
            width: 100%;
        }

/* ============================================
   SCROLLBAR STYLING
   ============================================ */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-navy) 0%, var(--primary-navy-dark) 100%);
    border-radius: 6px;
    border: 2px solid var(--light-gray);
}

    ::-webkit-scrollbar-thumb:hover {
        background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-dark) 100%);
    }

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card, .alert, .table {
    animation: fadeInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   MOBILE & TABLET OPTIMIZATIONS
   ============================================ */

/* Tablet (768px - 1024px) */
@media (max-width: 1024px) {
    .container-fluid {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .card-body {
        padding: 1.25rem;
    }

    .table {
        font-size: 0.9375rem;
    }
}

/* Mobile (up to 767px) */
@media (max-width: 767px) {
    .display-5 {
        font-size: 1.75rem !important;
    }

    h1 {
        font-size: 1.875rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .navbar-brand {
        font-size: 1.25rem;
    }

    .card {
        margin-bottom: 1rem;
        border-radius: 10px;
    }

    .card-header {
        padding: 1rem 1.25rem;
        font-size: 1rem;
    }

    .card-body {
        padding: 1rem;
    }

    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .btn-lg {
        padding: 0.75rem 1.25rem;
        font-size: 1rem;
    }

    .form-control, .form-select {
        font-size: 16px;
    }

    .table {
        font-size: 0.875rem;
    }

        .table thead th {
            font-size: 0.75rem;
            padding: 0.875rem 0.625rem;
        }

        .table tbody td {
            padding: 0.875rem 0.625rem;
        }

    .badge {
        font-size: 0.8125rem;
        padding: 0.375rem 0.875rem;
    }

    .d-flex.justify-content-between {
        flex-direction: column;
        gap: 1rem;
    }
}

/* Extra small screens (up to 575px) */
@media (max-width: 575px) {
    .navbar {
        padding: 0.625rem 0;
    }

    .display-5::after {
        width: 40px;
        height: 3px;
    }

    .table thead th:nth-child(1),
    .table tbody td:nth-child(1) {
        display: none;
    }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 44px;
        padding: 0.75rem 1.5rem;
    }

    .form-control, .form-select {
        min-height: 44px;
    }

    .nav-link, .dropdown-item {
        min-height: 44px;
        display: flex;
        align-items: center;
    }

    .card:hover {
        transform: none;
    }

    .btn:hover {
        transform: none;
    }
}

/* Print styles */
@media print {
    .navbar, .footer, .btn, .dropdown {
        display: none !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid var(--medium-gray);
        page-break-inside: avoid;
    }

    .card-header {
        background: var(--light-gray) !important;
        color: var(--primary-navy) !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
}