/* Bedz4kidz staff UI — mobile-first, shared across login / admin / scanner */

:root {
    color-scheme: light;
    --font: "DM Sans", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    --bg: #f4f6f8;
    --bg-elevated: #ffffff;
    --text: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --accent: #0d9488;
    --accent-hover: #0f766e;
    --accent-soft: rgba(13, 148, 136, 0.12);
    --danger: #dc2626;
    --danger-soft: #fef2f2;
    --success: #059669;
    --success-soft: #ecfdf5;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 4px 12px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 4px 6px rgba(15, 23, 42, 0.05), 0 12px 24px rgba(15, 23, 42, 0.08);
    --tap: 2.75rem;
    --reader-bg: #0f172a;
    --reader-border: #1e293b;
    --table-row-hover: rgba(13, 148, 136, 0.04);
    --alert-error-fg: #991b1b;
    --alert-error-bg: #fef2f2;
    --alert-error-border: rgba(220, 38, 38, 0.2);
    --alert-success-fg: #065f46;
    --alert-success-bg: #ecfdf5;
    --alert-success-border: rgba(5, 150, 105, 0.2);
    --scan-ok-fg: #065f46;
    --scan-ok-bg: #ecfdf5;
    --scan-ok-border: rgba(5, 150, 105, 0.25);
    --scan-err-fg: #991b1b;
    --scan-err-bg: #fef2f2;
    --scan-err-border: rgba(220, 38, 38, 0.2);
    --danger-hover-bg: #fee2e2;
}

@media (prefers-color-scheme: dark) {
    html:not([data-theme]) {
        color-scheme: dark;
        --bg: #0c1117;
        --bg-elevated: #151b24;
        --text: #e8edf4;
        --text-muted: #8b9cb3;
        --border: #2a3544;
        --accent: #2dd4bf;
        --accent-hover: #5eead4;
        --accent-soft: rgba(45, 212, 191, 0.18);
        --danger: #f87171;
        --danger-soft: rgba(127, 29, 29, 0.45);
        --success: #34d399;
        --success-soft: rgba(6, 78, 59, 0.45);
        --shadow: 0 1px 3px rgba(0, 0, 0, 0.35), 0 4px 14px rgba(0, 0, 0, 0.25);
        --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.35);
        --reader-bg: #020617;
        --reader-border: #1e293b;
        --table-row-hover: rgba(45, 212, 191, 0.08);
        --alert-error-fg: #fecaca;
        --alert-error-bg: rgba(127, 29, 29, 0.4);
        --alert-error-border: rgba(248, 113, 113, 0.25);
        --alert-success-fg: #a7f3d0;
        --alert-success-bg: rgba(6, 78, 59, 0.45);
        --alert-success-border: rgba(52, 211, 153, 0.3);
        --scan-ok-fg: #a7f3d0;
        --scan-ok-bg: rgba(6, 78, 59, 0.45);
        --scan-ok-border: rgba(52, 211, 153, 0.3);
        --scan-err-fg: #fecaca;
        --scan-err-bg: rgba(127, 29, 29, 0.4);
        --scan-err-border: rgba(248, 113, 113, 0.25);
        --danger-hover-bg: rgba(153, 27, 27, 0.55);
    }
}

html[data-theme="dark"] {
    color-scheme: dark;
    --bg: #0c1117;
    --bg-elevated: #151b24;
    --text: #e8edf4;
    --text-muted: #8b9cb3;
    --border: #2a3544;
    --accent: #2dd4bf;
    --accent-hover: #5eead4;
    --accent-soft: rgba(45, 212, 191, 0.18);
    --danger: #f87171;
    --danger-soft: rgba(127, 29, 29, 0.45);
    --success: #34d399;
    --success-soft: rgba(6, 78, 59, 0.45);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.35), 0 4px 14px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.35);
    --reader-bg: #020617;
    --reader-border: #1e293b;
    --table-row-hover: rgba(45, 212, 191, 0.08);
    --alert-error-fg: #fecaca;
    --alert-error-bg: rgba(127, 29, 29, 0.4);
    --alert-error-border: rgba(248, 113, 113, 0.25);
    --alert-success-fg: #a7f3d0;
    --alert-success-bg: rgba(6, 78, 59, 0.45);
    --alert-success-border: rgba(52, 211, 153, 0.3);
    --scan-ok-fg: #a7f3d0;
    --scan-ok-bg: rgba(6, 78, 59, 0.45);
    --scan-ok-border: rgba(52, 211, 153, 0.3);
    --scan-err-fg: #fecaca;
    --scan-err-bg: rgba(127, 29, 29, 0.4);
    --scan-err-border: rgba(248, 113, 113, 0.25);
    --danger-hover-bg: rgba(153, 27, 27, 0.55);
}

html[data-theme="light"] {
    color-scheme: light;
}

html[data-theme="dark"] {
    color-scheme: dark;
}

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

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

body.app-body {
    margin: 0;
    min-height: 100dvh;
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
    background-image:
        radial-gradient(ellipse 120% 80% at 50% -20%, rgba(13, 148, 136, 0.15), transparent 55%),
        radial-gradient(ellipse 80% 50% at 100% 100%, rgba(13, 148, 136, 0.06), transparent 45%);
}

@media (prefers-color-scheme: dark) {
    html:not([data-theme]) body.app-body {
        background-image:
            radial-gradient(ellipse 100% 70% at 50% -15%, rgba(45, 212, 191, 0.12), transparent 50%),
            radial-gradient(ellipse 70% 50% at 100% 100%, rgba(45, 212, 191, 0.06), transparent 45%);
    }
}

html[data-theme="dark"] body.app-body {
    background-image:
        radial-gradient(ellipse 100% 70% at 50% -15%, rgba(45, 212, 191, 0.12), transparent 50%),
        radial-gradient(ellipse 70% 50% at 100% 100%, rgba(45, 212, 191, 0.06), transparent 45%);
}

.app-shell {
    width: 100%;
    max-width: 40rem;
    margin: 0 auto;
    padding: max(1rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) max(1.5rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
}

.app-shell--wide {
    max-width: 52rem;
}

.app-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem 1rem;
    margin-bottom: 1.5rem;
}

.app-brand {
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: -0.02em;
    color: var(--text);
    text-decoration: none;
}

.app-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    align-items: center;
}

.app-nav a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: var(--tap);
    padding: 0 0.9rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 999px;
    border: 1px solid transparent;
    transition: color 0.15s, background 0.15s, border-color 0.15s;
}

.app-nav a:hover {
    color: var(--accent);
    background: var(--accent-soft);
}

.app-nav a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.app-nav .theme-toggle {
    min-height: 2.5rem;
    padding: 0 0.85rem;
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--text-muted);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 999px;
    cursor: pointer;
    transition: color 0.15s, background 0.15s, border-color 0.15s;
}

.app-nav .theme-toggle:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-soft);
}

.app-nav .theme-toggle:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.app-main {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.app-hero {
    margin-bottom: 0.25rem;
}

.app-hero h1 {
    margin: 0 0 0.35rem;
    font-size: clamp(1.5rem, 4.5vw, 1.75rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.app-hero p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.25rem 1.35rem;
}

.card + .card {
    margin-top: 0.25rem;
}

.card h2 {
    margin: 0 0 1rem;
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.card > .alert:first-child {
    margin-top: 0;
    margin-bottom: 1rem;
}

.field {
    margin-bottom: 1rem;
}

.field:last-child {
    margin-bottom: 0;
}

.field label,
label.field-label {
    display: block;
    margin-bottom: 0.35rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text);
}

input[type="text"],
input[type="password"],
select {
    width: 100%;
    min-height: var(--tap);
    padding: 0 0.9rem;
    font: inherit;
    font-size: 1rem;
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: border-color 0.15s, box-shadow 0.15s;
}

input:focus-visible,
select:focus-visible {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: var(--tap);
    padding: 0 1.25rem;
    font: inherit;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: background 0.15s, transform 0.05s;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    width: 100%;
    margin-top: 0.25rem;
    color: #fff;
    background: var(--accent);
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-primary:focus-visible {
    outline: 2px solid var(--accent-hover);
    outline-offset: 2px;
}

.btn-danger {
    min-height: 2.5rem;
    padding: 0 0.85rem;
    font-size: 0.8125rem;
    color: var(--danger);
    background: var(--danger-soft);
    border: 1px solid rgba(220, 38, 38, 0.2);
}

.btn-danger:hover {
    background: var(--danger-hover-bg);
}

.btn-secondary {
    min-height: 2.5rem;
    font-size: 0.875rem;
    color: var(--text);
    background: var(--bg-elevated);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg);
}

.form-actions {
    margin-top: 1.25rem;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
}

.alert-error {
    color: var(--alert-error-fg);
    background: var(--alert-error-bg);
    border: 1px solid var(--alert-error-border);
}

.alert-success {
    color: var(--alert-success-fg);
    background: var(--alert-success-bg);
    border: 1px solid var(--alert-success-border);
}

/* Scanner */
.reader-card {
    overflow: hidden;
    padding: 0.75rem;
    background: var(--reader-bg);
    border: 1px solid var(--reader-border);
}

#reader {
    width: 100%;
    max-width: 100%;
    min-height: 220px;
    margin: 0 auto;
}

#reader video {
    border-radius: var(--radius-sm) !important;
}

.scan-status {
    display: none;
    margin-top: 1rem;
    padding: 0.85rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-weight: 500;
}

.scan-status.is-visible {
    display: block;
}

.scan-status.ok {
    color: var(--scan-ok-fg);
    background: var(--scan-ok-bg);
    border: 1px solid var(--scan-ok-border);
}

.scan-status.err {
    color: var(--scan-err-fg);
    background: var(--scan-err-bg);
    border: 1px solid var(--scan-err-border);
}

/* Admin table */
.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0 -0.25rem;
    padding: 0 0.25rem;
}

.data-table {
    width: 100%;
    min-width: 320px;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.875rem;
}

.data-table th,
.data-table td {
    padding: 0.65rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.data-table th {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    background: var(--bg);
}

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

.data-table tbody tr:hover td {
    background: var(--table-row-hover);
}

.cell-actions {
    white-space: nowrap;
}

.text-muted {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.form-inline {
    display: inline;
}

.section-stack {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

@media (min-width: 640px) {
    .section-stack {
        flex-direction: row;
        align-items: flex-start;
    }

    .section-stack .card {
        flex: 1;
        min-width: 0;
    }
}