/*
 * MQTech frontend design system foundation.
 * Local-only CSS: no external fonts, scripts, or CDN dependencies.
 */
:root {
    --color-bg: #060b14;
    --color-surface: #111b2e;
    --color-surface-elevated: #162235;
    --color-text: #f3f7ff;
    --color-muted: #a6b5cc;
    --color-primary: #4f8cff;
    --color-primary-hover: #356fe0;
    --color-border: rgba(148, 163, 184, 0.16);
    --color-danger: #ef4444;
    --color-warning: #f59e0b;
    --color-success: #22c55e;

    --font-family-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;

    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-card: 0 12px 28px rgba(0, 0, 0, 0.24);

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;

    --logo-width: 46px;
    --header-height: 72px;
    --sidebar-width: 280px;

    /* Compatibility aliases for current templates. */
    --bg: var(--color-bg);
    --bg-soft: #0b1220;
    --bg-elevated: #0f1728;
    --surface: var(--color-surface);
    --surface-2: var(--color-surface-elevated);
    --surface-3: #1b2940;
    --surface-4: #22324f;
    --text: var(--color-text);
    --text-soft: #d1dbee;
    --text-muted: var(--color-muted);
    --text-faint: #7d8ea8;
    --primary: var(--color-primary);
    --primary-light: #7aa7ff;
    --primary-dark: var(--color-primary-hover);
    --primary-2: #7b61ff;
    --accent-cyan: #22d3ee;
    --danger: var(--color-danger);
    --warning: var(--color-warning);
    --success: var(--color-success);
    --info: var(--color-primary);
    --success-soft: rgba(34, 197, 94, .12);
    --warning-soft: rgba(245, 158, 11, .13);
    --danger-soft: rgba(239, 68, 68, .12);
    --info-soft: rgba(79, 140, 255, .14);
    --border: var(--color-border);
    --border-strong: rgba(148, 163, 184, .24);
    --border-light: rgba(255, 255, 255, .04);
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, #7b61ff 100%);
    --gradient-hero:
        radial-gradient(circle at 10% 0%, rgba(79, 140, 255, .18), transparent 28%),
        radial-gradient(circle at 92% 12%, rgba(123, 97, 255, .15), transparent 26%),
        radial-gradient(circle at 40% 70%, rgba(34, 211, 238, .07), transparent 24%),
        linear-gradient(180deg, #060b14 0%, #0a1220 48%, #0d1626 100%);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .18);
    --shadow-md: 0 12px 28px rgba(0, 0, 0, .25);
    --shadow-lg: 0 20px 44px rgba(0, 0, 0, .32);
    --shadow-xl: 0 30px 90px rgba(0, 0, 0, .46);
    --container: 1440px;
    --transition: 180ms cubic-bezier(.4, 0, .2, 1);
    --z-sticky: 1200;
    --z-menu: 1250;
    --z-toast: 1300;
    --z-overlay: 1240;
}

[data-theme="light"] {
    --color-bg: #f6f8fc;
    --color-surface: #ffffff;
    --color-surface-elevated: #f8fafc;
    --color-text: #0f172a;
    --color-muted: #52637b;
    --color-border: rgba(15, 23, 42, 0.12);
    --shadow-card: 0 12px 28px rgba(15, 23, 42, 0.08);
    --bg-soft: #ffffff;
    --bg-elevated: #f8fbff;
    --surface-3: #eef4ff;
    --surface-4: #e8f0fe;
    --text-soft: #334155;
    --text-faint: #7b8aa3;
    --border-strong: rgba(15, 23, 42, .15);
    --border-light: rgba(15, 23, 42, .04);
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .04);
    --shadow-md: 0 12px 28px rgba(15, 23, 42, .07);
    --shadow-lg: 0 20px 44px rgba(15, 23, 42, .10);
    --shadow-xl: 0 30px 90px rgba(15, 23, 42, .14);
    --gradient-hero:
        radial-gradient(circle at 10% 0%, rgba(79, 140, 255, .14), transparent 30%),
        radial-gradient(circle at 92% 12%, rgba(123, 97, 255, .12), transparent 26%),
        radial-gradient(circle at 40% 70%, rgba(34, 211, 238, .05), transparent 24%),
        linear-gradient(180deg, #edf4ff 0%, #f5f8fd 48%, #f7faff 100%);
}

body {
    font-family: var(--font-family-base);
    letter-spacing: 0;
}

.app-shell {
    min-height: 100vh;
    background: var(--color-bg);
    color: var(--color-text);
}

.app-header {
    min-height: var(--header-height);
    border-bottom: 1px solid var(--color-border);
    background: color-mix(in srgb, var(--color-surface) 92%, transparent);
}

.app-sidebar {
    width: var(--sidebar-width);
    border-right: 1px solid var(--color-border);
    background: var(--color-surface);
}

.app-main {
    min-width: 0;
}

.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.page-title {
    margin: 0;
    color: var(--color-text);
    font-size: var(--font-size-xl);
    line-height: 1.2;
    font-weight: 800;
}

.page-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.app-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    min-width: 0;
}

.app-logo__image {
    width: var(--logo-width);
    height: var(--logo-width);
    flex: 0 0 var(--logo-width);
    object-fit: contain;
    border-radius: var(--radius-md);
}

.app-logo__text {
    color: var(--color-text);
    font-weight: 800;
    line-height: 1.15;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-height: 38px;
    padding: 0.6rem 0.9rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface-elevated);
    color: var(--color-text);
    font: inherit;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

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

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

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
}

.btn-danger {
    border-color: color-mix(in srgb, var(--color-danger) 70%, transparent);
    background: color-mix(in srgb, var(--color-danger) 14%, var(--color-surface));
    color: var(--color-danger);
}

.btn-ghost {
    border-color: transparent;
    background: transparent;
    color: var(--color-muted);
}

.card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    box-shadow: var(--shadow-card);
}

.card-header {
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.card-title {
    margin: 0;
    color: var(--color-text);
    font-size: var(--font-size-lg);
    font-weight: 800;
}

.card-body {
    padding: var(--space-4);
}

.form-group {
    display: grid;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.form-label {
    color: var(--color-muted);
    font-size: var(--font-size-sm);
    font-weight: 700;
}

.form-control {
    width: 100%;
    min-height: 40px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface-elevated);
    color: var(--color-text);
    padding: 0.6rem 0.75rem;
    font: inherit;
}

.form-help {
    color: var(--color-muted);
    font-size: var(--font-size-xs);
}

.form-error {
    color: var(--color-danger);
    font-size: var(--font-size-sm);
}

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

.data-table__header,
.data-table th {
    color: var(--color-muted);
    font-size: var(--font-size-xs);
    font-weight: 800;
    text-align: left;
    text-transform: uppercase;
}

.data-table__cell,
.data-table td {
    border-top: 1px solid var(--color-border);
    padding: var(--space-3);
    vertical-align: top;
}

.table-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.badge {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    border-radius: var(--radius-sm);
    padding: 0.2rem 0.45rem;
    font-size: var(--font-size-xs);
    font-weight: 800;
}

.badge-success {
    background: color-mix(in srgb, var(--color-success) 14%, transparent);
    color: var(--color-success);
}

.badge-warning {
    background: color-mix(in srgb, var(--color-warning) 16%, transparent);
    color: var(--color-warning);
}

.badge-danger {
    background: color-mix(in srgb, var(--color-danger) 14%, transparent);
    color: var(--color-danger);
}

.badge-muted {
    background: color-mix(in srgb, var(--color-muted) 14%, transparent);
    color: var(--color-muted);
}