/* ============================================================
   SuperLab - Common Styles (Light/Dark Mode, Responsive)
   ============================================================ */

/* CSS Variables */
:root {
    /* Light Theme */
    --scheme: light;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --bg-card: #ffffff;
    --bg-header: #ffffff;
    --bg-footer: #1a1a2e;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --text-footer: #e9ecef;
    --accent-primary: #2563eb;
    --accent-secondary: #1d4ed8;
    --accent-hover: #1e40af;
    --accent-light: #dbeafe;
    --success: #059669;
    --success-light: #d1fae5;
    --warning: #d97706;
    --warning-light: #fef3c7;
    --danger: #dc2626;
    --danger-light: #fee2e2;
    --info: #0284c7;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --transition: all 0.3s ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --scheme: dark;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: #1e293b;
    --bg-header: #0f172a;
    --bg-footer: #020617;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-footer: #cbd5e1;
    --accent-primary: #3b82f6;
    --accent-secondary: #60a5fa;
    --accent-hover: #93c5fd;
    --accent-light: #1e3a5f;
    --success: #10b981;
    --success-light: #064e3b;
    --warning: #f59e0b;
    --warning-light: #78350f;
    --danger: #ef4444;
    --danger-light: #7f1d1d;
    --info: #38bdf8;
    --border-color: #334155;
    --border-light: #1e293b;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.4);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

main {
    flex: 1;
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    line-height: 1.4;
    white-space: nowrap;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--accent-light);
}

.btn-primary {
    background-color: var(--accent-primary);
    color: #ffffff;
    border-color: var(--accent-primary);
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #ffffff;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-success {
    background-color: var(--success);
    color: #ffffff;
    border-color: var(--success);
}

.btn-success:hover {
    background-color: #047857;
    border-color: #047857;
    color: #ffffff;
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-danger {
    background-color: var(--danger);
    color: #ffffff;
    border-color: var(--danger);
}

.btn-danger:hover {
    background-color: #b91c1c;
    border-color: #b91c1c;
    color: #ffffff;
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-warning {
    background-color: var(--warning);
    color: #ffffff;
    border-color: var(--warning);
}

.btn-warning:hover {
    background-color: #b45309;
    border-color: #b45309;
    color: #ffffff;
    text-decoration: none;
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1.1rem;
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-outline {
    background: transparent;
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.btn-outline:hover {
    background: var(--accent-primary);
    color: #ffffff;
    text-decoration: none;
}

.btn-link {
    padding: 0;
    background: transparent;
    color: var(--accent-primary);
    border-color: none;
    font-weight: normal;
}


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

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.375rem;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px var(--danger-light);
}

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

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236c757d' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 1.1rem;
    height: 1.1rem;
    cursor: pointer;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.form-error {
    font-size: 0.8rem;
    color: var(--danger);
    margin-top: 0.25rem;
}

/* Cards */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.card-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin-top: 1rem;
}

/* Alerts */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border: 1px solid transparent;
}

.alert-success {
    background-color: var(--success-light);
    border-color: var(--success);
    color: var(--success);
}

.alert-danger {
    background-color: var(--danger-light);
    border-color: var(--danger);
    color: var(--danger);
}

.alert-warning {
    background-color: var(--warning-light);
    border-color: var(--warning);
    color: var(--warning);
}

.alert-info {
    background-color: var(--accent-light);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.6rem;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge-success {
/*    background-color: var(--success-light);*/
    color: var(--success);
}

.badge-danger {
/*    background-color: var(--danger-light);*/
    color: var(--danger);
}

.badge-warning {
/*    background-color: var(--warning-light);*/
    color: var(--warning);
}

.badge-info {
/*    background-color: var(--accent-light);*/
    color: var(--accent-primary);
}

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

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

thead {
    background-color: var(--bg-secondary);
}

th {
    padding: 0.875rem 1rem;
    text-align: left;
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
}

tbody tr:hover {
    background-color: var(--bg-secondary);
}

tbody tr:last-child td {
    border-bottom: none;
}

/* Grid */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Flex utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }

/* Spacing */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }
.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

/* Text utilities */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.font-bold { font-weight: 700; }

/* Divider */
.divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 1.5rem 0;
}

/* Theme toggle */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.25rem;
    padding: 0.375rem;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    color: var(--accent-primary);
    background-color: var(--bg-tertiary);
}

/* ============================================================
   Header Styles
   ============================================================ */
.site-header {
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0.75rem 0;
    gap: 1rem;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.navbar-brand:hover {
    text-decoration: none;
    color: var(--accent-primary);
}

.brand-icon {
    font-size: 1.5rem;
}

.brand-text {
    letter-spacing: -0.02em;
}

/* Navbar Toggle (Hamburger) */
.navbar-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    flex-direction: column;
    gap: 4px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.navbar-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.navbar-toggle:hover {
    background-color: var(--bg-tertiary);
}

.navbar-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.navbar-toggle.active span:nth-child(2) {
    opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* Navbar Menu */
.navbar-menu {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 1.5rem;
    flex: 1;
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.navbar-links li a {
    display: block;
    padding: 0.5rem 0.875rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.navbar-links li a:hover {
    color: var(--accent-primary);
    background-color: var(--bg-tertiary);
    text-decoration: none;
}

.navbar-links li a.active {
    color: var(--accent-primary);
    background-color: var(--accent-light);
    font-weight: 600;
}

/* Navbar Actions */
.navbar-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.user-greeting {
    margin-right: 1rem;
    font-size: 0.85rem;
    font-weight: 500;
/*    color: var(--text-secondary);*/
    color: var(--accent-primary);
}

/* ============================================================
   Footer Styles
   ============================================================ */
.site-footer {
    background-color: var(--bg-footer);
    color: var(--text-footer);
    padding: 3rem 0 1.5rem;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    transition: var(--transition);
}

.footer-area {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    color: var(--text-footer);
    font-size: 1.35rem;
    margin-bottom: 0.75rem;
}

.footer-brand {
    max-width: 350px;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0;
    line-height: 1.6;
}

.footer-links h4 {
    color: var(--text-footer);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-links ul li {
    margin-bottom: 0.5rem;
}

.footer-links ul li a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--accent-primary);
    text-decoration: none;
    padding-left: 3px;
}

.footer-contact h4 {
    color: var(--text-footer);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-contact p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.footer-bottom p {
    margin-bottom: 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Modal overlay */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

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

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 2rem;
    max-width: 500px;
    width: 100%;
    box-shadow: var(--shadow-xl);
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.25rem;
    line-height: 1;
}

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

/* Empty state */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Loader */
.loader {
    display: inline-block;
    width: 1.5rem;
    height: 1.5rem;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    html { font-size: 15px; }
    
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .container {
        padding: 0 1rem;
    }

    .hide-mobile {
        display: none !important;
    }

    /* Mobile header */
    .navbar-toggle {
        display: flex;
    }

    .navbar-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-header);
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
        padding: 1rem;
        flex-direction: column;
        gap: 0.75rem;
        z-index: 99;
    }

    .navbar-menu.active {
        display: flex;
    }

    .navbar-links {
        flex-direction: column;
        width: 100%;
        gap: 0.25rem;
    }

    .navbar-links li a {
        padding: 0.75rem 1rem;
        width: 100%;
    }

    .navbar-actions {
        width: 100%;
        flex-direction: column;
        gap: 0.5rem;
        padding-top: 0.75rem;
        border-top: 1px solid var(--border-color);
    }

    .navbar-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .user-menu {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }

    /* Mobile footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    html { font-size: 14px; }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
}

.svg-icon {
    fill: var(--text-primary);
}

input[type="date"],
input[type="time"] {
  color-scheme: var(--scheme);
}