@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    color-scheme: dark;
    --font-ui: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    --color-page-bg: #0f172a;
    --color-surface: #111827;
    --color-surface-elevated: #172033;
    --color-panel-bg: #1e293b;
    --color-sidebar-bg: #0b0f19;
    --color-header-bg: #1b2638;

    --color-text-primary: #f8fafc;
    --color-text-muted: #94a3b8;
    --color-text-subtle: #64748b;

    --color-border: #334155;
    --color-divider: rgba(148, 163, 184, 0.16);

    --color-link: #8ea2ff;
    --color-link-hover: #c2ccff;

    --color-btn-primary-bg: #6366f1;
    --color-btn-primary-hover: #4f46e5;
    --color-btn-primary-text: #ffffff;
    --color-btn-secondary-bg: rgba(15, 23, 42, 0.48);
    --color-btn-secondary-hover: rgba(255, 255, 255, 0.08);
    --color-btn-secondary-text: #e2e8f0;

    --color-field-bg: rgba(15, 23, 42, 0.58);
    --color-field-border: #334155;
    --color-field-text: #f8fafc;
    --color-field-placeholder: #7c8ba1;

    --color-table-head-bg: rgba(148, 163, 184, 0.08);
    --color-table-row-bg: rgba(255, 255, 255, 0.01);
    --color-table-row-hover: rgba(99, 102, 241, 0.1);

    --color-success: #34d399;
    --color-success-bg: rgba(16, 185, 129, 0.16);
    --color-warning: #fbbf24;
    --color-warning-bg: rgba(245, 158, 11, 0.16);
    --color-danger: #f87171;
    --color-danger-bg: rgba(239, 68, 68, 0.16);
    --color-info: #7dd3fc;
    --color-info-bg: rgba(14, 165, 233, 0.16);

    --color-badge-neutral-bg: rgba(148, 163, 184, 0.16);
    --color-badge-neutral-text: #cbd5e1;

    --shadow-sm: 0 10px 20px rgba(2, 6, 23, 0.18);
    --shadow-md: 0 20px 40px rgba(2, 6, 23, 0.28);
    --shadow-accent: 0 12px 24px rgba(99, 102, 241, 0.24);
    --focus-ring: 0 0 0 3px rgba(99, 102, 241, 0.24);
    --hero-accent: rgba(99, 102, 241, 0.14);
    --hero-glow: rgba(15, 23, 42, 0.96);
    --gradient-brand: linear-gradient(135deg, #d7deff 0%, #7c8cff 52%, #6366f1 100%);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);

    /* Backward-compatible aliases used by current admin pages */
    --bg-dark: var(--color-page-bg);
    --bg-card: var(--color-panel-bg);
    --bg-sidebar: var(--color-sidebar-bg);
    --border-color: var(--color-border);
    --text-primary: var(--color-text-primary);
    --text-secondary: var(--color-text-muted);
    --text-muted: var(--color-text-subtle);
    --accent: var(--color-btn-primary-bg);
    --accent-hover: var(--color-btn-primary-hover);
    --accent-light: rgba(99, 102, 241, 0.14);
    --success: var(--color-success);
    --success-light: var(--color-success-bg);
    --warning: var(--color-warning);
    --warning-light: var(--color-warning-bg);
    --danger: var(--color-danger);
    --danger-light: var(--color-danger-bg);
}

html[data-theme="light"] {
    color-scheme: light;
    --color-page-bg: #f3f6fb;
    --color-surface: #ffffff;
    --color-surface-elevated: #eef3fb;
    --color-panel-bg: #ffffff;
    --color-sidebar-bg: #e7edf7;
    --color-header-bg: rgba(255, 255, 255, 0.9);

    --color-text-primary: #172033;
    --color-text-muted: #516079;
    --color-text-subtle: #6b7b93;

    --color-border: #d4ddeb;
    --color-divider: rgba(100, 116, 139, 0.2);

    --color-link: #4355d0;
    --color-link-hover: #2f3fb0;

    --color-btn-primary-bg: #4958d8;
    --color-btn-primary-hover: #3747be;
    --color-btn-primary-text: #ffffff;
    --color-btn-secondary-bg: rgba(231, 237, 247, 0.9);
    --color-btn-secondary-hover: #dbe5f3;
    --color-btn-secondary-text: #172033;

    --color-field-bg: #f7f9fc;
    --color-field-border: #c9d5e8;
    --color-field-text: #172033;
    --color-field-placeholder: #7a8ba7;

    --color-table-head-bg: #eef3fb;
    --color-table-row-bg: #ffffff;
    --color-table-row-hover: rgba(73, 88, 216, 0.08);

    --color-success: #0f9f6e;
    --color-success-bg: rgba(15, 159, 110, 0.12);
    --color-warning: #b36b00;
    --color-warning-bg: rgba(245, 158, 11, 0.14);
    --color-danger: #c63c47;
    --color-danger-bg: rgba(198, 60, 71, 0.12);
    --color-info: #0c87c7;
    --color-info-bg: rgba(12, 135, 199, 0.12);

    --color-badge-neutral-bg: rgba(100, 116, 139, 0.12);
    --color-badge-neutral-text: #516079;

    --shadow-sm: 0 12px 24px rgba(15, 23, 42, 0.08);
    --shadow-md: 0 24px 44px rgba(15, 23, 42, 0.12);
    --shadow-accent: 0 14px 28px rgba(73, 88, 216, 0.18);
    --focus-ring: 0 0 0 3px rgba(73, 88, 216, 0.18);
    --hero-accent: rgba(73, 88, 216, 0.12);
    --hero-glow: rgba(227, 235, 248, 0.9);
    --gradient-brand: linear-gradient(135deg, #1f2d54 0%, #4355d0 54%, #6980ff 100%);
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
}

body {
    margin: 0;
    font-family: var(--font-ui);
    background-color: var(--color-page-bg);
    color: var(--color-text-primary);
    transition: background-color 0.2s ease, color 0.2s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-link);
}

a:hover {
    color: var(--color-link-hover);
}

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

input::placeholder,
textarea::placeholder {
    color: var(--color-field-placeholder);
}

:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-width: 112px;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    background: var(--color-btn-secondary-bg);
    color: var(--color-btn-secondary-text);
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle:hover {
    background: var(--color-btn-secondary-hover);
    border-color: var(--color-link);
}

.theme-toggle-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.theme-toggle-value {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text-primary);
}

.theme-card-toolbar {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 16px;
}

@media (max-width: 640px) {
    .theme-toggle {
        min-width: 98px;
        padding: 7px 10px;
    }

    .theme-toggle-label {
        font-size: 11px;
    }

    .theme-toggle-value {
        font-size: 12px;
    }
}