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

/* Accessibility: skip link */
.skip-link {
    position: absolute; top: -100%; left: 1rem; z-index: 1000;
    padding: 0.75rem 1.5rem; background: var(--accent); color: #fff;
    border-radius: 8px; font-weight: 600; font-size: var(--text-base);
    text-decoration: none; transition: top 0.2s;
}
.skip-link:focus { top: 0.75rem; }

/* Accessibility: screen-reader only */
.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;
}

/* Accessibility: reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

:root {
    color-scheme: dark;
    --bg-primary: #0a0c10;
    --bg-secondary: #12151c;
    --bg-card: #161a24;
    --bg-card-hover: #1c2030;
    --bg-input: #0e1018;
    --bg-elevated: #1e2230;
    --border: #1e2230;
    --border-subtle: #161a24;
    --border-focus: #6c8cff;
    --text-primary: #eaecf4;
    --text-secondary: #a0a5c0;
    --text-muted: #9ca3af;
    --accent: #6c8cff;
    --accent-hover: #5a78f0;
    --accent-glow: rgba(108, 140, 255, 0.12);
    --accent-strong-glow: rgba(108, 140, 255, 0.25);
    --green: #4ade80;
    --green-soft: #22c55e;
    --green-bg: rgba(74, 222, 128, 0.08);
    --green-border: rgba(74, 222, 128, 0.2);
    --red: #fb7185;
    --red-bg: rgba(251, 113, 133, 0.08);
    --red-border: rgba(251, 113, 133, 0.2);
    --amber: #fbbf24;
    --amber-bg: rgba(251, 191, 36, 0.08);
    --bg-overlay: rgba(0, 0, 0, 0.6);
    --purple: #9c6cff;
    --avatar-bg: linear-gradient(135deg, var(--accent), var(--purple));
    --radius-sm: 10px;
    --radius-xs: 6px;
    --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 40px rgba(108, 140, 255, 0.06);

    /* === Phase 27 Design Tokens === */

    /* Spacing — 4px exponential scale (D-01) */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 48px;
    --space-8: 64px;

    /* Typography (D-06, D-07) */
    --text-xs: 0.75rem;
    --text-sm: 0.8125rem;
    --text-base: 0.875rem;
    --text-md: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --leading-tight: 1.2;
    --leading-snug: 1.35;
    --leading-normal: 1.5;

    /* Radius (D-05) — --radius-md replaces legacy --radius */
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-pill: 9999px;
    --radius: var(--radius-md); /* temporary alias; remove after migration */

    /* Shadow (D-05) */
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
    --shadow: var(--shadow-lg); /* temporary alias; remove after migration */

    /* Motion (D-04, D-12) */
    --duration-fast: 150ms;
    --duration-base: 300ms;
    --duration-slow: 500ms;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);

    /* Icons (D-04) */
    --icon-sm: 16px;
    --icon-md: 20px;
    --icon-lg: 24px;

    /* Z-index (D-04) */
    --z-base: 1;
    --z-sticky: 10;
    --z-dropdown: 100;
    --z-modal: 1000;
    --z-toast: 2000;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: var(--leading-normal);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* === Nav === */
.navbar {
    background: rgba(18, 21, 28, 0.85);
    border-bottom: 1px solid var(--border);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
}
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-weight: 700;
    font-size: var(--text-md);
    line-height: var(--leading-snug);
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.01em;
}
.navbar-brand:hover { color: var(--text-primary); }
.navbar-brand .logo {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.navbar-brand .logo svg {
    width: 100%;
    height: 100%;
}
.navbar-links {
    display: flex;
    gap: 2px;
    list-style: none;
}
.navbar-links a,
.navbar-links .navbar-link-button {
    color: var(--text-muted);
    text-decoration: none;
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-xs);
    font-size: var(--text-sm);
    line-height: var(--leading-snug);
    font-weight: 500;
    transition: all var(--duration-fast) var(--ease-in-out);
    letter-spacing: 0.01em;
    position: relative;
}
.navbar-links .navbar-link-button {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}
.navbar-links a:hover,
.navbar-links .navbar-link-button:hover {
    color: var(--text-secondary);
    background: rgba(255,255,255,0.04);
}
.navbar-links a.active {
    color: var(--text-primary);
    background: var(--accent-glow);
}
.navbar-links a.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0.5rem;
    right: 0.5rem;
    height: 2px;
    background: var(--accent);
    border-radius: 2px 2px 0 0;
}

/* Admin dropdown */
.nav-dropdown {
    position: relative;
}
.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.375rem 0;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    z-index: 100;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
    display: block;
}
.nav-dropdown-menu a {
    display: block;
    padding: 0.5rem 1rem;
    font-size: var(--text-sm);
    line-height: var(--leading-snug);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 0;
}
.nav-dropdown-menu a:hover {
    background: rgba(255,255,255,0.06);
    color: var(--text-primary);
}
.nav-dropdown-menu a.active {
    color: var(--accent);
    background: var(--accent-glow);
}
.nav-dropdown-menu a.active::after {
    display: none;
}

/* Hamburger toggle */
.navbar-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.375rem;
    width: 36px;
    height: 36px;
    position: relative;
    z-index: 110;
}
.navbar-toggle span,
.navbar-toggle span::before,
.navbar-toggle span::after {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-secondary);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: absolute;
    left: 8px;
}
.navbar-toggle span { top: 50%; transform: translateY(-50%); }
.navbar-toggle span::before { content: ''; top: -6px; }
.navbar-toggle span::after  { content: ''; top: 6px; }
.navbar-toggle[aria-expanded="true"] span { background: transparent; }
.navbar-toggle[aria-expanded="true"] span::before {
    top: 0;
    transform: rotate(45deg);
    background: var(--text-primary);
}
.navbar-toggle[aria-expanded="true"] span::after {
    top: 0;
    transform: rotate(-45deg);
    background: var(--text-primary);
}

/* Mobile menu panel */
.navbar-mobile-panel {
    display: none;
}

/* === Layout === */
.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 1.75rem 2rem;
}
@media (max-width: 768px) {
    .container { padding: 1rem; }
    .navbar { padding: 0 1rem; }

    /* Show hamburger, hide inline nav */
    .navbar-toggle { display: block; }
    .navbar-user { display: none; }

    /* Mobile slide-down panel */
    .navbar-mobile-panel {
        display: block;
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        background: rgba(18, 21, 28, 0.97);
        border-bottom: 1px solid var(--border);
        backdrop-filter: blur(20px) saturate(180%);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        z-index: 99;
        padding: 0.5rem 0;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                    opacity 0.25s ease;
    }
    .navbar-mobile-panel.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    .navbar-mobile-panel a,
    .navbar-mobile-panel .mobile-link-button {
        display: flex;
        align-items: center;
        gap: 0.625rem;
        padding: 0.75rem 1.5rem;
        color: var(--text-secondary);
        text-decoration: none;
        font-size: var(--text-base);
        line-height: var(--leading-snug);
        font-weight: 500;
        transition: all var(--duration-fast) var(--ease-in-out);
        position: relative;
    }
    .navbar-mobile-panel .mobile-link-button {
        width: 100%;
        text-align: left;
        background: none;
        border: none;
        cursor: pointer;
        font-family: inherit;
    }
    .navbar-mobile-panel a:hover,
    .navbar-mobile-panel a:focus,
    .navbar-mobile-panel .mobile-link-button:hover,
    .navbar-mobile-panel .mobile-link-button:focus {
        color: var(--text-primary);
        background: rgba(255,255,255,0.04);
    }
    .navbar-mobile-panel a.active {
        color: var(--text-primary);
        background: var(--accent-glow);
    }
    .navbar-mobile-panel a.active::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0.375rem;
        bottom: 0.375rem;
        width: 3px;
        background: var(--accent);
        border-radius: 0 3px 3px 0;
    }
    .navbar-mobile-panel .mobile-divider {
        height: 1px;
        background: var(--border);
        margin: 0.375rem 1.25rem;
    }
    .navbar-mobile-panel .mobile-user {
        display: flex;
        align-items: center;
        gap: 0.625rem;
        padding: 0.625rem 1.5rem;
        font-size: var(--text-xs);
        color: var(--text-muted);
    }
    .navbar-mobile-panel .mobile-user .avatar {
        width: 28px;
        height: 28px;
        font-size: var(--text-xs);
    }
    .navbar-mobile-panel .mobile-logout {
        color: var(--text-muted);
    }
    .navbar-mobile-panel .mobile-logout:hover {
        color: var(--red);
    }
}
@media (max-width: 480px) {
    .container { padding: 0.75rem; }
    .navbar { height: 48px; }
    .navbar-brand { font-size: var(--text-base); gap: 0.375rem; }
    .navbar-brand .logo { width: 24px; height: 24px; }
    .navbar-mobile-panel { top: 48px; }
    .navbar-mobile-panel a { min-height: 44px; }
}

/* === Grid === */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
@media (max-width: 768px) {
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

/* === Cards === */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: all var(--duration-fast) var(--ease-in-out);
    position: relative;
    overflow: hidden;
}
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(108,140,255,0.1), transparent);
}
.card:hover {
    border-color: rgba(108,140,255,0.15);
    box-shadow: var(--shadow-glow);
}
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}
.card-header h3 {
    font-size: var(--text-sm);
    line-height: var(--leading-tight);
    font-weight: 600;
    color: var(--text-secondary);
}

/* === Status badges === */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.1875rem 0.625rem;
    border-radius: 100px;
    font-size: var(--text-xs);
    line-height: var(--leading-snug);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}
.badge::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
}
.badge-running {
    background: var(--green-bg);
    color: var(--green);
    border: 1px solid var(--green-border);
}
.badge-running::before {
    background: var(--green);
    box-shadow: 0 0 8px var(--green);
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}
.badge-stopped {
    background: var(--red-bg);
    color: var(--red);
    border: 1px solid var(--red-border);
}
.badge-stopped::before { background: var(--red); }

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1.125rem;
    border-radius: var(--radius-xs);
    font-size: var(--text-sm);
    line-height: var(--leading-snug);
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--duration-fast) var(--ease-in-out);
    text-decoration: none;
    color: var(--text-primary);
    white-space: nowrap;
    letter-spacing: 0.01em;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 2px 8px rgba(108, 140, 255, 0.25);
}
.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 16px rgba(108, 140, 255, 0.35);
    transform: translateY(-1px);
}
.btn-success {
    background: rgba(74, 222, 128, 0.15);
    border-color: var(--green-border);
    color: var(--green);
}
.btn-success:hover {
    background: rgba(74, 222, 128, 0.25);
    box-shadow: 0 4px 16px rgba(74, 222, 128, 0.15);
}
.btn-danger {
    background: var(--red-bg);
    border-color: var(--red-border);
    color: var(--red);
}
.btn-danger:hover { background: rgba(251, 113, 133, 0.18); }
.btn-outline {
    background: transparent;
    border-color: var(--border);
    color: var(--text-secondary);
}
.btn-outline:hover {
    border-color: rgba(108,140,255,0.3);
    color: var(--text-primary);
    background: var(--accent-glow);
}
.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border: none;
    padding: 0.375rem 0.5rem;
}
.btn-ghost:hover { color: var(--red); }
.btn-sm { padding: 0.3125rem 0.625rem; font-size: var(--text-xs); }
.btn-group { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.btn-group form { margin: 0; }

/* === Tables === */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}
th {
    text-align: left;
    padding: 0.5rem 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--border);
}
td {
    padding: 0.625rem 0.75rem;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-secondary);
}
td:first-child { color: var(--text-primary); font-weight: 500; }
tr:last-child td { border-bottom: none; }
tr { transition: background var(--duration-fast) var(--ease-in-out); }
tr:hover td { background: rgba(108,140,255,0.03); }

/* === Log viewer === */
.log-box {
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: rgba(74, 222, 128, 0.85);
    font-family: 'JetBrains Mono', monospace;
    font-size: var(--text-xs);
    line-height: 1.8;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    max-height: 380px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}
.log-box::-webkit-scrollbar { width: 4px; }
.log-box::-webkit-scrollbar-track { background: transparent; }
.log-box::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
.log-box::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* === Forms === */
label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.375rem;
}
input, select, textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    background: var(--bg-input);
    border: 1px solid #4b5563;
    border-radius: var(--radius-xs);
    color: var(--text-primary);
    font-family: inherit;
    font-size: var(--text-sm);
    transition: all var(--duration-fast) var(--ease-in-out);
}
input:focus, select:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: 1px;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
    background: rgba(108,140,255,0.03);
}
input:focus:not(:focus-visible), select:focus:not(:focus-visible) {
    outline: none;
}
.btn:focus-visible, button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}
input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
}
select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%237c82a0' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}
select option {
    background: var(--bg-card);
    color: var(--text-primary);
}
.form-group { margin-bottom: 1rem; }
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 0.875rem;
    align-items: end;
}
@media (max-width: 480px) {
    .form-row {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
}

/* Table horizontal scroll wrapper */
.table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}
.table-scroll::-webkit-scrollbar { height: 4px; }
.table-scroll::-webkit-scrollbar-track { background: transparent; }
.table-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* === Reservation cards === */
.reservation-entry {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 0.875rem;
    position: relative;
    transition: all var(--duration-fast) var(--ease-in-out);
}
.reservation-entry:hover {
    border-color: rgba(108,140,255,0.12);
}

/* === Screenshots === */
.screenshot-container {
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg-input);
}
.screenshot-container img {
    width: 100%;
    display: block;
    opacity: 0.9;
    transition: opacity var(--duration-fast) var(--ease-in-out);
}
.screenshot-container:hover img { opacity: 1; }
.screenshot-empty {
    padding: 2.5rem;
    text-align: center;
    color: var(--text-muted);
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    border: 1px dashed var(--border);
    font-size: var(--text-sm);
}

/* === Stats === */
.stat-value {
    font-size: var(--text-xl);
    line-height: var(--leading-tight);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}
.stat-label {
    font-size: var(--text-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

/* === Page header === */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}
.page-header h2 {
    font-size: var(--text-xl);
    line-height: var(--leading-tight);
    font-weight: 700;
    letter-spacing: -0.01em;
}

/* === Misc === */
a { color: var(--accent); text-decoration: none; transition: color var(--duration-fast) var(--ease-in-out); }
a:hover { color: var(--accent-hover); }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: var(--text-xs); }
.mt-1 { margin-top: 0.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.gap-1 { gap: 1.25rem; }

/* === Checkbox labels === */
.check-label {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    margin: 0;
    cursor: pointer;
    text-transform: none;
    letter-spacing: 0;
    font-size: var(--text-sm);
    line-height: var(--leading-snug);
    font-weight: 500;
    color: var(--text-secondary);
}
.check-label:hover { color: var(--text-primary); }

/* === Divider === */
.divider {
    height: 1px;
    background: var(--border);
    margin: 1.25rem 0;
}

/* === Toast / flash === */
.toast {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    left: 1.5rem;
    background: var(--bg-elevated);
    border: 1px solid var(--green-border);
    color: var(--green);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    line-height: var(--leading-snug);
    font-weight: 500;
    box-shadow: var(--shadow);
    z-index: 1000;
    animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
}
@media (min-width: 481px) {
    .toast {
        left: auto;
        max-width: 400px;
    }
}
@keyframes slideIn { from { transform: translateY(1rem); opacity: 0; } }
@keyframes fadeOut { to { opacity: 0; transform: translateY(-0.5rem); } }

/* === Auth Forms === */
.auth-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 56px);
    padding: 2rem;
}
.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
    animation: authIn 0.4s ease;
}
@keyframes authIn { from { transform: scale(0.96) translateY(12px); opacity: 0; } }
.auth-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--purple), var(--accent));
}
.auth-card h2 {
    font-size: var(--text-xl);
    line-height: var(--leading-tight);
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 0.25rem;
}
.auth-card .text-sub {
    color: var(--text-muted);
    font-size: var(--text-sm);
    margin-bottom: 1.5rem;
}
.auth-card .btn-primary { width: 100%; padding: 0.625rem; }
.auth-footer {
    text-align: center;
    margin-top: 1.25rem;
    font-size: var(--text-xs);
    color: var(--text-muted);
}
.auth-footer a { font-weight: 500; }
.auth-branding {
    text-align: center;
    margin-bottom: 2rem;
}
.auth-branding .logo {
    width: 48px;
    height: 48px;
    margin: 0 auto 0.75rem;
}
.auth-branding .logo svg {
    width: 100%;
    height: 100%;
}
.field-hint {
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-top: 0.25rem;
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
}
.alert-error {
    background: var(--red-bg);
    border: 1px solid var(--red-border);
    color: var(--red);
    padding: 0.625rem 1rem;
    border-radius: var(--radius-xs);
    font-size: var(--text-sm);
    margin-bottom: 1rem;
}

/* === Avatar Badge === */
.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--avatar-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
    font-weight: 700;
    color: #fff;
    letter-spacing: 0.03em;
    cursor: pointer;
    transition: box-shadow var(--duration-fast) var(--ease-in-out);
    flex-shrink: 0;
    text-decoration: none;
}
.avatar:hover { box-shadow: 0 0 0 3px var(--accent-glow); color: #fff; }
.navbar-premium-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.1875rem 0.625rem;
    border-radius: 100px;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: linear-gradient(135deg, rgba(251,191,36,0.15), rgba(245,158,11,0.08));
    border: 1px solid rgba(251,191,36,0.35);
    color: #f59e0b;
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}
.navbar-premium-badge::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(251,191,36,0.15), transparent);
    animation: navPremiumShimmer 4s ease-in-out infinite;
}
@keyframes navPremiumShimmer {
    0%, 80%, 100% { left: -100%; }
    40% { left: 100%; }
}
.navbar-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
@media (max-width: 768px) {
    .navbar-user { display: none; }
}

/* === Admin Table === */
.user-table .user-cell {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}
.role-tag {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-glow);
    padding: 0.125rem 0.5rem;
    border-radius: 100px;
}

/* === Modal === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    backdrop-filter: blur(4px);
    animation: fadeIn 0.15s ease;
}
@keyframes fadeIn { from { opacity: 0; } }
.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.75rem;
    width: 90%;
    max-width: 440px;
    box-shadow: var(--shadow);
    animation: modalIn 0.2s ease;
    position: relative;
    overflow: hidden;
}
.modal::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(108,140,255,0.15), transparent);
}
@keyframes modalIn { from { transform: scale(0.96) translateY(8px); opacity: 0; } }
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}
.modal-header h3 {
    font-size: var(--text-md);
    line-height: var(--leading-tight);
    font-weight: 700;
    letter-spacing: -0.01em;
}
.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: var(--text-lg);
    cursor: pointer;
    padding: 0.25rem;
}
.modal-close:hover { color: var(--text-primary); }
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

/* === Home brand link (used on standalone pages) === */
.home-brand-link {
    position: fixed;
    top: 1rem;
    left: 1.25rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-muted);
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: -0.01em;
    transition: color var(--duration-fast) var(--ease-in-out);
    z-index: 50;
}
.home-brand-link:hover { color: var(--text-primary); }
.home-brand-link svg { flex-shrink: 0; filter: drop-shadow(0 2px 6px rgba(108, 140, 255, 0.15)); }
@media (max-width: 480px) {
    .home-brand-link { top: 0.75rem; left: 0.75rem; font-size: var(--text-xs); }
    .home-brand-link svg { width: 18px; height: 18px; }
}

/* === Flash alert classes (reusable across pages) === */
.alert-flash {
    padding: 0.875rem 1.25rem;
    border-radius: 8px;
    margin-bottom: 1.25rem;
    font-size: var(--text-base);
    font-weight: 500;
    line-height: var(--leading-normal);
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    animation: fadeIn 0.4s ease;
}
.alert-flash--success {
    background: var(--green-bg);
    border: 1px solid var(--green-border);
    color: var(--green);
}
.alert-flash--error {
    background: var(--red-bg);
    border: 1px solid var(--red-border);
    color: var(--red);
}
.alert-flash-icon {
    flex-shrink: 0;
    font-size: var(--text-md);
}

/* ============================================================
   Phase 27 — Unified Component Library (DSYS-02)
   Tokens from :root above. Legacy .btn-* / .card rules still
   present above; they will be removed in Plan 4 final cleanup.
   ============================================================ */

/* === Buttons (D-09, D-10, D-17) === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    font-family: inherit;
    font-weight: 500;
    line-height: var(--leading-snug);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    user-select: none;
    text-decoration: none;
    transition: background var(--duration-fast) var(--ease-in-out),
                border-color var(--duration-fast) var(--ease-in-out),
                color var(--duration-fast) var(--ease-in-out),
                transform var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}
.btn-sm { height: 32px; padding: var(--space-2) var(--space-3); font-size: var(--text-sm); }
.btn-md { height: 40px; padding: var(--space-3) var(--space-4); font-size: var(--text-base); min-width: 80px; }
.btn-lg { height: 48px; padding: var(--space-4) var(--space-5); font-size: var(--text-md); font-weight: 600; min-width: 120px; }
.btn:not(.btn-sm):not(.btn-lg):not(.btn-md) {
    /* default = md sizing when no size modifier applied */
    height: 40px;
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    min-width: 80px;
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    box-shadow: 0 2px 8px rgba(108, 140, 255, 0.25);
}
.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 16px rgba(108, 140, 255, 0.35);
    transform: translateY(-1px);
}
.btn-secondary {
    background: var(--bg-elevated);
    border-color: var(--border);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-glow);
}
.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--text-secondary);
}
.btn-ghost:hover {
    background: var(--accent-glow);
    color: var(--text-primary);
}
.btn-danger {
    background: var(--red-bg);
    border-color: var(--red-border);
    color: var(--red);
}
.btn-danger:hover {
    background: rgba(251, 113, 133, 0.18);
}

.btn:focus-visible { outline: 2px solid var(--border-focus); outline-offset: 2px; }
.btn:active { transform: scale(0.98); }
.btn:disabled,
.btn[aria-disabled="true"] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}
.btn[aria-busy="true"] {
    pointer-events: none;
    position: relative;
}
.btn[aria-busy="true"] .btn-label { visibility: hidden; }
.btn-spinner {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 16px;
    height: 16px;
    animation: btn-spin 1s linear infinite;
}
@keyframes btn-spin { to { transform: rotate(360deg); } }

.btn-accent-glow {
    box-shadow: 0 0 0 1px var(--accent), 0 0 24px var(--accent-strong-glow);
}
.btn-block { width: 100%; }
.btn-icon {
    padding: 0;
    width: 40px;
    height: 40px;
    min-width: 0;
}

/* Touch device override — WCAG min 44px (D-17) */
@media (pointer: coarse) {
    .btn,
    .tap-target { min-height: 44px; min-width: 44px; }
}

/* === Inputs (D-11) === */
.input-md {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    color: var(--text-primary);
    font-size: var(--text-base);
    height: 40px;
    transition: border-color var(--duration-fast) var(--ease-in-out),
                outline-color var(--duration-fast) var(--ease-in-out);
}
.input-sm {
    height: 32px;
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
}
.input-lg {
    height: 48px;
    padding: var(--space-4) var(--space-5);
    font-size: var(--text-md);
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
}
.input-sm:focus-visible,
.input-md:focus-visible,
.input-lg:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
    border-color: var(--accent);
}
.input-sm[aria-invalid="true"],
.input-md[aria-invalid="true"],
.input-lg[aria-invalid="true"] { border-color: var(--red); }
.input-sm:disabled,
.input-md:disabled,
.input-lg:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--bg-secondary);
}
.input-helper { font-size: var(--text-sm); color: var(--text-muted); }
.input-error { font-size: var(--text-sm); color: var(--red); }

/* === Cards (D-11) === */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-5);
}
.card-elevated {
    box-shadow: var(--shadow-md);
    border-color: transparent;
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}
.card-header h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    line-height: var(--leading-tight);
    margin: 0;
}
.card-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}
.card-footer {
    margin-top: var(--space-5);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-subtle);
}
@media (max-width: 767.98px) {
    .card { padding: var(--space-4); }
}

/* === Empty State (D-11, D-15) === */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--space-7) var(--space-5);
    gap: var(--space-3);
}
.empty-state-icon {
    color: var(--text-muted);
    opacity: 0.7;
}
.empty-state-title {
    font-size: var(--text-lg);
    font-weight: 600;
    line-height: var(--leading-tight);
    color: var(--text-primary);
    margin: 0;
}
.empty-state-body {
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--text-secondary);
    max-width: 44ch;
    margin: 0;
}

/* === Badges (D-11) === */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 2px var(--space-2);
    border-radius: var(--radius-pill);
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    line-height: var(--leading-snug);
}
.badge::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
}
.badge-running {
    background: var(--green-bg);
    color: var(--green);
    border: 1px solid var(--green-border);
}
.badge-running::before {
    background: var(--green);
    animation: badge-pulse 2s var(--ease-in-out) infinite;
}
@keyframes badge-pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.4; }
}
.badge-stopped {
    background: var(--red-bg);
    color: var(--red);
    border: 1px solid var(--red-border);
}
.badge-stopped::before { background: var(--red); }
.badge-paused,
.badge-pending {
    background: var(--amber-bg);
    color: var(--amber);
}
.badge-paused::before,
.badge-pending::before { background: var(--amber); }
.badge-premium {
    background: var(--accent-glow);
    color: var(--accent);
    border: 1px solid var(--accent-glow);
}
.badge-premium::before { display: none; }
.badge-refunded {
    background: var(--bg-elevated);
    color: var(--text-muted);
}
.badge-refunded::before { background: var(--text-muted); }
.badge-beta {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
}
.badge-beta::before { display: none; }

/* === Skeletons (D-14) === */
.skeleton {
    background: linear-gradient(90deg, var(--bg-card) 0%, var(--bg-card-hover) 50%, var(--bg-card) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s var(--ease-in-out) infinite;
    border-radius: var(--radius-sm);
}
@keyframes shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}
.skeleton-card  { height: 132px; border-radius: var(--radius-md); }
.skeleton-row   { height: 44px;  border-radius: var(--radius-sm); }
.skeleton-stat  { height: 88px;  border-radius: var(--radius-md); }
.skeleton-chart { height: 240px; border-radius: var(--radius-md); }
@media (prefers-reduced-motion: reduce) {
    .skeleton {
        animation: none;
        opacity: 0.5;
        background: var(--bg-card-hover);
    }
}

/* === Toasts (D-13) === */
.toast {
    position: fixed;
    top: var(--space-5);
    right: var(--space-5);
    bottom: auto;   /* cancel legacy bottom: 1.5rem */
    left: auto;     /* cancel legacy left: 1.5rem */
    z-index: var(--z-toast);
    min-width: 280px;
    max-width: 400px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--space-4) var(--space-5);
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--space-3);
    animation: toast-in var(--duration-base) var(--ease-out);
}
.toast-success { border-left: 3px solid var(--green); }
.toast-error   { border-left: 3px solid var(--red); }
.toast-info    { border-left: 3px solid var(--accent); }
.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: var(--accent);
    animation: toast-countdown 5s linear forwards;
    transform-origin: left;
}
@keyframes toast-in {
    from { transform: translateX(calc(100% + var(--space-5))); opacity: 0; }
    to   { transform: translateX(0); opacity: 1; }
}
@keyframes toast-countdown {
    from { transform: scaleX(1); }
    to   { transform: scaleX(0); }
}
@media (max-width: 767.98px) {
    .toast {
        top: var(--space-4);
        left: var(--space-4);
        right: var(--space-4);
        max-width: none;
    }
}

/* === Modals & Bottom Sheets (D-19) === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    z-index: var(--z-modal);
    display: grid;
    place-items: center;
}
.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: min(520px, calc(100vw - 2 * var(--space-5)));
    padding: var(--space-6);
    position: relative;
}
.modal-close {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    width: 44px;
    height: 44px;
    background: transparent;
    border: 0;
    color: var(--text-secondary);
    cursor: pointer;
}
@media (max-width: 767.98px) {
    .modal-overlay[data-mobile-sheet] { place-items: end center; }
    .modal[data-mobile-sheet] {
        position: fixed;
        inset: auto 0 0 0;
        width: 100vw;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        max-height: 92vh;
        overflow-y: auto;
        animation: sheet-up var(--duration-base) var(--ease-out);
    }
}
@keyframes sheet-up {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
}

/* === Utilities === */
.tabular,
.stat-value,
.tee-time-slot,
.money,
td.num,
td.amount,
td.time,
td.count {
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum";
}
.tap-target {
    min-width: 44px;
    min-height: 44px;
}

/* === Booking confirmation animation (D-13) === */
.card--confirming {
    position: relative;
    box-shadow: 0 0 0 1px var(--accent), 0 0 40px var(--accent-strong-glow);
    transition: box-shadow var(--duration-slow) var(--ease-out);
}
.card--confirmed {
    position: relative;
    box-shadow: none;
    transition: box-shadow var(--duration-base) var(--ease-in-out);
}
.confirm-check {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    width: var(--icon-lg);
    height: var(--icon-lg);
    color: var(--accent);
    pointer-events: none;
    animation: checkmark-scale var(--duration-base) var(--ease-out) forwards;
}
.confirm-check svg { width: 100%; height: 100%; }
.confirm-check svg path {
    stroke-dasharray: 28;
    stroke-dashoffset: 28;
    animation: checkmark-draw var(--duration-base) var(--ease-out) forwards;
}
@keyframes checkmark-scale {
    from { transform: scale(0.7); opacity: 0; }
    to   { transform: scale(1);   opacity: 1; }
}
@keyframes checkmark-draw {
    to { stroke-dashoffset: 0; }
}
.toast-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    color: var(--green);
}
.toast-message {
    color: var(--text-primary);
    font-size: var(--text-base);
    line-height: var(--leading-snug);
}
.toast-close {
    background: transparent;
    border: 0;
    color: var(--text-muted);
    cursor: pointer;
    font-size: var(--text-lg);
    line-height: 1;
    padding: 0;
}
@media (prefers-reduced-motion: reduce) {
    .confirm-check { animation: none; opacity: 1; transform: none; }
    .confirm-check svg path { animation: none; stroke-dashoffset: 0; }
    .card--confirming,
    .card--confirmed { transition: none; }
}

/* === Phase 27 Plan 04 — Mobile parity (D-16/17/19) === */

/* Mobile base font scaling (D-19): shift the entire rem scale to a 15px
   base below 768px so every --text-* / --space-* / --radius-* token
   resolves proportionally smaller without any per-page overrides. */
@media (max-width: 767.98px) {
    html { font-size: 93.75%; } /* 16px * 0.9375 = 15px base */
}

/* Mobile navbar: keep the logged-in user's avatar visible inline
   (D-19). The default rule at ~line 940 hides .navbar-user below
   768px so the hamburger can take over nav links — but the avatar
   should remain an always-visible identity anchor. */
@media (max-width: 767.98px) {
    .navbar .navbar-user { display: flex; }
    .navbar .navbar-user .navbar-links,
    .navbar .navbar-user .navbar-premium-badge,
    .navbar .navbar-user form[action="/logout"] {
        display: none; /* collapse nav items + logout; keep avatar only */
    }
    .navbar .navbar-user .avatar,
    .navbar .navbar-user [data-nav-avatar] {
        display: inline-flex !important;
    }
    /* Unauth navbar: keep the inline Sign In visible too. */
    .navbar .navbar-user.navbar-user--unauth { display: flex; }
}

/* Admin table sticky first column (D-16): under <900px horizontal
   scroll loses row identity on wide admin tables; pinning the first
   column keeps the user/date anchor visible. The sticky cell uses an
   explicit background so translucent row styling doesn't bleed. */
@media (max-width: 899px) {
    .admin-table { border-collapse: separate; border-spacing: 0; }
    .admin-table th:first-child,
    .admin-table td:first-child,
    .table-sticky-first th:first-child,
    .table-sticky-first td:first-child {
        position: sticky;
        left: 0;
        background: var(--bg-card);
        z-index: var(--z-sticky);
        box-shadow: 2px 0 4px rgba(0, 0, 0, 0.15);
    }
    .admin-table thead th:first-child,
    .table-sticky-first thead th:first-child {
        background: var(--bg-elevated);
    }
    .admin-table tr:hover td:first-child,
    .table-sticky-first tr:hover td:first-child {
        background: var(--bg-card-hover);
    }
}