:root,
[data-theme="light"] {
    --color-bg: #fff7e1;
    --color-surface: #fff2cc;
    --color-surface-2: #fff6e6;
    --color-surface-offset: #ffe4a4;
    --color-border: #ffe4a4;
    --color-divider: #ddd8d1;

    --color-text: #2b1c14;
    --color-text-muted: #5a5a5a;
    --color-text-faint: #8c827b;
    --color-text-inverse: #ffffff;

    --color-primary: #7b111f;
    --color-primary-hover: #9c1c2e;
    --color-primary-soft: rgba(123, 17, 31, 0.08);

    --color-success: #437a22;
    --color-warning: #b06a00;
    --color-danger: #a13544;

    --shadow-sm: 0 1px 3px rgba(43, 28, 20, 0.06);
    --shadow-md: 0 8px 24px rgba(43, 28, 20, 0.08);
    --shadow-lg: 0 20px 50px rgba(43, 28, 20, 0.12);

    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-full: 999px;

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;

    --font-body: 'Mali', system-ui, -apple-system, sans-serif;
    --font-display: 'Mali', system-ui, -apple-system, sans-serif;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: clamp(1.5rem, 1.1rem + 1vw, 2rem);
    --text-2xl: clamp(2rem, 1.4rem + 2vw, 3rem);

    color-scheme: light;
}

[data-theme="dark"] {
    --color-bg: #191511;
    --color-surface: #272019;
    --color-surface-2: #322920;
    --color-surface-offset: #3f3429;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-divider: rgba(255, 255, 255, 0.12);

    --color-text: #f5eee4;
    --color-text-muted: #aaa;
    --color-text-faint: #777;
    --color-text-inverse: #191511;

    --color-primary: #ffd5a2;
    --color-primary-hover: #ffc785;
    --color-primary-soft: rgba(255, 213, 162, 0.12);

    --color-success: #76ab50;
    --color-warning: #d69d42;
    --color-danger: #d86d7c;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.28);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.34);

    color-scheme: dark;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

img,
svg {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    border: 0;
    background: none;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th,
td {
    text-align: left;
    padding: 0.9rem 0.75rem;
    border-bottom: 1px solid var(--color-divider);
    vertical-align: middle;
}

thead th {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    font-weight: 600;
}

tbody tr:hover {
    background: var(--color-primary-soft);
}

code {
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
    background: var(--color-surface-offset);
    font-size: 0.9em;
}

strong {
    font-weight: 700;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.shell {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
    padding: var(--space-8) var(--space-6);
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    height: 100vh;
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.brand-mark {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-lg);
    display: grid;
    place-items: center;
    background: var(--color-primary-soft);
    color: var(--color-primary);
    flex-shrink: 0;
}

.brand-copy {
    display: grid;
    gap: 0.1rem;
}

.brand-copy strong {
    font-size: 1rem;
    line-height: 1.2;
}

.brand-copy span {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

.nav-group {
    display: grid;
    gap: 0.35rem;
}

.nav-label {
    margin-bottom: 0.35rem;
    color: var(--color-text-faint);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.nav-link {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 0.8rem 0.95rem;
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-weight: 500;
    transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.nav-link:hover,
.nav-link:focus-visible {
    background: var(--color-surface-offset);
    color: var(--color-text);
    outline: none;
}

.nav-link.active {
    background: var(--color-primary-soft);
    color: var(--color-primary);
}

.sidebar-footer {
    margin-top: auto;
    padding: var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface-2);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
}

.main {
    padding: var(--space-8);
    display: grid;
    gap: var(--space-8);
}

.mobile-bar {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-6);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

/* --- Login Page Styles --- */
.login-page {
    --color-login-bg: #fff7e1;
    --color-login-card: #fff2cc;
    --color-login-text: #2b1c14;
    --color-login-text-muted: #5a5a5a;
    --color-login-primary: #7b111f;
    --color-login-primary-hover: #9c1c2e;
    --color-login-border: #ffe4a4;
    --color-login-input-bg: #ffffff;
    --font-login: 'Mali', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;

    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--color-login-bg);
    color: var(--color-login-text);
    font-family: var(--font-login);
    padding: var(--space-6);
}

[data-theme="dark"] .login-page {
    --color-login-bg: #191511;
    --color-login-card: #272019;
    --color-login-text: #f5eee4;
    --color-login-text-muted: #aaa;
    --color-login-primary: #ffd5a2;
    --color-login-primary-hover: #ffc785;
    --color-login-border: rgba(255, 255, 255, 0.08);
    --color-login-input-bg: #191511;
}

.login-card {
    width: 100%;
    max-width: 440px;
    background: var(--color-login-card);
    border: 2px solid var(--color-login-border);
    border-radius: var(--radius-xl);
    padding: var(--space-10) var(--space-8);
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.login-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 30px 60px rgba(43, 28, 20, 0.15);
}

.login-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.login-header h1 {
    font-size: var(--text-xl);
    font-weight: 700;
    margin: var(--space-4) 0 var(--space-2) 0;
    color: var(--color-login-primary);
    font-family: var(--font-login);
}

.login-header p {
    color: var(--color-login-text-muted);
    font-size: var(--text-sm);
    margin: 0;
}

.form-group {
    margin-bottom: var(--space-5);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-login-text);
}

.form-input {
    width: 100%;
    min-height: 48px;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    border: 2px solid var(--color-login-border);
    background: var(--color-login-input-bg);
    color: var(--color-login-text);
    font-family: var(--font-login);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-login-primary);
    box-shadow: 0 0 0 4px rgba(123, 17, 31, 0.15);
}

[data-theme="dark"] .form-input:focus {
    box-shadow: 0 0 0 4px rgba(255, 213, 162, 0.15);
}

.login-error {
    background: rgba(161, 53, 68, 0.1);
    border: 1px solid var(--color-danger);
    color: var(--color-danger);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    margin-bottom: var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.login-button {
    width: 100%;
    min-height: 48px;
    background: var(--color-login-primary);
    color: #ffffff;
    border-radius: var(--radius-md);
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    transition: background-color 0.2s ease, transform 0.1s ease;
    margin-top: var(--space-4);
    font-family: var(--font-login);
}

[data-theme="dark"] .login-button {
    color: #191511;
}

.login-button:hover {
    background: var(--color-login-primary-hover);
}

.login-button:active {
    transform: scale(0.98);
}

/* Sidebar Logout Button */
.logout-form {
    margin-top: auto;
}

.btn-logout {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    width: 100%;
    min-height: 44px;
    padding: 0.8rem 0.95rem;
    border-radius: var(--radius-md);
    color: var(--color-danger);
    font-weight: 500;
    transition: background 180ms ease, color 180ms ease;
    background: transparent;
    cursor: pointer;
    text-align: left;
}

.btn-logout:hover {
    background: rgba(161, 53, 68, 0.1);
}

.facility-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: var(--color-primary-soft);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: var(--space-2);
}

/* --- Modal & Form Styles for CRUD --- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(43, 28, 20, 0.4);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.modal.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    transform: translateY(-20px);
    transition: transform 0.2s ease;
    display: flex;
    flex-direction: column;
}

.modal.open .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid var(--color-divider);
}

.modal-header h3 {
    margin: 0;
    color: var(--color-primary);
    font-size: var(--text-lg);
}

.btn-close {
    font-size: 1.5rem;
    font-weight: 700;
    cursor: pointer;
    color: var(--color-text-muted);
    background: transparent;
    border: none;
}

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

.modal-body {
    padding: var(--space-6) 0;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--color-divider);
    margin-top: var(--space-4);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    padding: 0 var(--space-6);
    margin-bottom: var(--space-4);
}

.modal form .form-group {
    padding: 0 var(--space-6);
    margin-bottom: var(--space-4);
}

.modal form .form-group label {
    margin-bottom: var(--space-1);
    display: block;
}

.select-field {
    width: 100%;
    min-height: 48px;
    border-radius: var(--radius-md);
    border: 2px solid var(--color-border);
    background: var(--color-surface-2);
    color: var(--color-text);
    padding: var(--space-3) var(--space-4);
    font-family: inherit;
}

.select-field:focus {
    outline: none;
    border-color: var(--color-primary);
}

.textarea-field {
    resize: vertical;
    min-height: 80px;
}

.days-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    background: var(--color-surface-2);
    padding: var(--space-3);
    border-radius: var(--radius-md);
    border: 2px solid var(--color-border);
}

.day-checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-sm);
    cursor: pointer;
    user-select: none;
    color: var(--color-text);
}

.day-checkbox-label input[type="checkbox"] {
    cursor: pointer;
}

.action-buttons {
    display: flex;
    gap: var(--space-2);
}

.btn-action {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    transition: background 0.2s, color 0.2s, border-color 0.2s;
    padding: 0;
}

.btn-action:hover {
    background: var(--color-surface-offset);
    color: var(--color-text);
}

.btn-action.edit:hover {
    color: var(--color-primary);
    border-color: rgba(123, 17, 31, 0.3);
    background: var(--color-primary-soft);
}

.btn-action.delete:hover {
    color: var(--color-danger);
    border-color: rgba(161, 53, 68, 0.3);
    background: rgba(161, 53, 68, 0.1);
}

/* Alert styles for feedback messages */
.alert-feedback {
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
}

.alert-feedback.success {
    background: rgba(67, 122, 34, 0.1);
    border: 1px solid var(--color-success);
    color: var(--color-success);
}

.alert-feedback.error {
    background: rgba(161, 53, 68, 0.1);
    border: 1px solid var(--color-danger);
    color: var(--color-danger);
}