:root {
    --backdrop-blur-overlay: 4px;
    --backdrop-blur-glass: 10px;
    --backdrop-blur-glass-strong: 20px;
    --backdrop-blur-chrome: 18px;
    --backdrop-blur-chrome-floating: 20px;
    --backdrop-blur-chrome-pill: 14px;
    --backdrop-blur-chrome-panel: 16px;
    --backdrop-blur-chrome-subtle: 12px;
    --backdrop-saturate-chrome-floating: 180%;
    --chrome-surface-mix: 82%;
}

:root,
[data-theme="dark"] {
    color-scheme: dark;

    --primary: #8b5cf6;
    --primary-light: #a78bfa;
    --primary-dark: #7c3aed;
    --secondary: #06b6d4;
    --accent: #f59e0b;

    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --body-background: #0f172a;

    --surface-card: #1e293b;
    --surface-card-hover: #334155;
    --surface-border: rgba(148, 163, 184, 0.25);
    --surface-muted: rgba(139, 92, 246, 0.12);
    --surface-elevated: #1e293b;
    --surface-hero-overlay: linear-gradient(180deg, rgba(15, 23, 42, 0) 0%, rgba(30, 41, 59, 0.85) 100%);
    --surface-cta: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(168, 85, 247, 0.12));

    --glass-bg: rgba(30, 41, 59, 0.92);
    --glass-border: rgba(148, 163, 184, 0.25);
    --glass-shadow: rgba(15, 23, 42, 0.2);

    --control-surface-bg: rgba(30, 41, 59, 0.92);

    --footer-trust-bg: linear-gradient(135deg, rgba(30, 41, 59, 0.96), rgba(15, 23, 42, 0.94));
    --footer-trust-border: rgba(148, 163, 184, 0.28);
    --footer-trust-border-hover: rgba(96, 165, 250, 0.45);
    --footer-trust-shadow: 0 18px 32px rgba(15, 23, 42, 0.16);
    --footer-trust-shadow-hover: 0 22px 36px rgba(37, 99, 235, 0.18);
    --footer-trust-icon-bg: rgba(37, 99, 235, 0.18);
    --footer-trust-outline: rgba(96, 165, 250, 0.35);

    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --text-inverse: #0f172a;

    --header-bg: rgba(15, 23, 42, 0.95);
    --header-border: rgba(148, 163, 184, 0.15);
    --header-glow-primary: rgba(139, 92, 246, 0.1);
    --header-glow-secondary: rgba(6, 182, 212, 0.05);
    --nav-link-color: #cbd5e1;
    --nav-link-active: #f1f5f9;
    --badge-bg: rgba(139, 92, 246, 0.15);
    --badge-text: #cbd5e1;
    --badge-icon: #fbbf24;

    --toggle-bg: rgba(76, 29, 149, 0.45);
    --toggle-border: rgba(167, 139, 250, 0.6);
    --toggle-icon: #f8fafc;
    --toggle-icon-muted: rgba(226, 232, 255, 0.65);
    --toggle-icon-active: #facc15;
    --toggle-thumb: rgba(15, 23, 42, 0.92);
    --toggle-thumb-border: rgba(148, 163, 255, 0.45);

    --input-bg: rgba(30, 41, 59, 0.95);
    --input-border: rgba(148, 163, 184, 0.35);
    --input-border-focus: rgba(129, 140, 248, 0.6);
    --input-placeholder: rgba(148, 163, 184, 0.6);

    --state-error-bg: rgba(248, 113, 113, 0.18);
    --state-error-border: rgba(248, 113, 113, 0.35);
    --state-error-color: #fca5a5;
    --message-critical-color: #f87171;
    --state-success-bg: rgba(74, 222, 128, 0.18);
    --state-success-border: rgba(74, 222, 128, 0.35);
    --state-success-color: #86efac;
    --state-warning-bg: rgba(253, 224, 71, 0.2);
    --state-warning-border: rgba(250, 204, 21, 0.35);
    --state-warning-color: #fde68a;
    --state-info-bg: rgba(96, 165, 250, 0.22);
    --state-info-border: rgba(96, 165, 250, 0.35);
    --state-info-color: #bfdbfe;
    --message-detail-bg: rgba(30, 41, 59, 0.95);
    --message-detail-border: rgba(148, 163, 255, 0.25);
    --message-detail-label: var(--text-primary);
    --message-detail-value: var(--text-secondary);
    --message-detail-link: var(--secondary);

    --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.25);
    --shadow-md: 0 12px 35px rgba(17, 24, 39, 0.35);
    --shadow-lg: 0 35px 80px rgba(15, 23, 42, 0.55);

    --radius-xs: 6px;
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-pill: 999px;
    --radius-2xl: 10px;

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.18s ease;

    --container-max: 1280px;
    --header-height: 78px;
    --bottom-nav-height: 70px;
    --mobile-nav-height: var(--bottom-nav-height);

    --spacing-xs: 0.55rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 3.5rem;
}

@media (max-width: 880px) {
    :root {
        --mobile-floating-inset-x: 10px;
        --mobile-floating-inset-top: 16px;
        --mobile-floating-inset-bottom: 16px;
        --mobile-floating-inset: var(--mobile-floating-inset-x);
        --mobile-header-top: calc(env(safe-area-inset-top, 0px) + var(--mobile-floating-inset-top));
        --mobile-header-stack: calc(var(--mobile-header-top) + var(--header-height) + var(--mobile-floating-inset-bottom));
        --mobile-bottom-stack: calc(var(--bottom-nav-height) + var(--mobile-floating-inset-bottom) + env(safe-area-inset-bottom, 0px));
        --mobile-chrome-radius: var(--radius-xl);
        --mobile-chrome-shadow:
            0 16px 56px 1px rgba(15, 23, 42, 0.075),
            0 4px 14px rgba(15, 23, 42, 0.05),
            0 1px 2px rgba(15, 23, 42, 0.03);
        --mobile-chrome-shadow-light:
            0 16px 56px 1px rgba(100, 116, 139, 0.1),
            0 4px 14px rgba(100, 116, 139, 0.065),
            0 1px 2px rgba(100, 116, 139, 0.04);
    }
}

@media (max-width: 640px) {
    :root {
        --header-height: 56px;
    }
}

@media (max-width: 480px) {
    :root {
        --bottom-nav-height: 68px;
    }
}

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

    --primary: #7c3aed;
    --primary-light: #8b5cf6;
    --primary-dark: #6d28d9;
    --secondary: #0891b2;
    --accent: #d97706;

    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --body-background: #f8fafc;

    --surface-card: #ffffff;
    --surface-card-hover: #f8fafc;
    --surface-border: rgba(148, 163, 184, 0.35);
    --surface-muted: rgba(99, 102, 241, 0.12);
    --surface-elevated: rgba(255, 255, 255, 0.85);
    --surface-hero-overlay: linear-gradient(180deg, rgba(248, 250, 252, 0) 0%, rgba(226, 232, 240, 0.7) 100%);
    --surface-cta: linear-gradient(135deg, rgba(99, 102, 241, 0.12), rgba(14, 165, 233, 0.12));

    --glass-bg: rgba(255, 255, 255, 0.75);
    --glass-border: rgba(148, 163, 184, 0.35);
    --glass-shadow: rgba(148, 163, 184, 0.35);

    --control-surface-bg: rgba(255, 255, 255, 0.85);

    --footer-trust-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(226, 232, 240, 0.85));
    --footer-trust-border: rgba(203, 213, 225, 0.75);
    --footer-trust-border-hover: rgba(99, 102, 241, 0.45);
    --footer-trust-shadow: 0 14px 30px rgba(148, 163, 184, 0.22);
    --footer-trust-shadow-hover: 0 20px 38px rgba(99, 102, 241, 0.18);
    --footer-trust-icon-bg: rgba(99, 102, 241, 0.12);
    --footer-trust-outline: rgba(99, 102, 241, 0.25);

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-inverse: #ffffff;

    --header-bg: rgba(255, 255, 255, 0.95);
    --header-border: rgba(148, 163, 184, 0.2);
    --header-glow-primary: rgba(124, 58, 237, 0.05);
    --header-glow-secondary: rgba(8, 145, 178, 0.03);
    --nav-link-color: #64748b;
    --nav-link-active: #0f172a;
    --badge-bg: rgba(124, 58, 237, 0.1);
    --badge-text: #475569;
    --badge-icon: #f59e0b;

    --toggle-bg: rgba(226, 232, 240, 0.9);
    --toggle-border: rgba(148, 163, 184, 0.5);
    --toggle-icon: #0f172a;
    --toggle-icon-muted: rgba(100, 116, 139, 0.7);
    --toggle-icon-active: #f59e0b;
    --toggle-thumb: #ffffff;
    --toggle-thumb-border: rgba(148, 163, 184, 0.35);

    --input-bg: rgba(255, 255, 255, 0.9);
    --input-border: rgba(148, 163, 184, 0.4);
    --input-border-focus: rgba(99, 102, 241, 0.55);
    --input-placeholder: rgba(148, 163, 184, 0.65);

    --state-error-bg: rgba(248, 113, 113, 0.12);
    --state-error-border: rgba(239, 68, 68, 0.2);
    --state-error-color: #dc2626;
    --message-critical-color: #b91c1c;
    --state-success-bg: rgba(34, 197, 94, 0.12);
    --state-success-border: rgba(34, 197, 94, 0.2);
    --state-success-color: #15803d;
    --state-warning-bg: rgba(251, 191, 36, 0.16);
    --state-warning-border: rgba(234, 179, 8, 0.25);
    --state-warning-color: #b45309;
    --state-info-bg: rgba(59, 130, 246, 0.12);
    --state-info-border: rgba(59, 130, 246, 0.2);
    --state-info-color: #1d4ed8;
    --message-detail-bg: rgba(241, 245, 249, 0.9);
    --message-detail-border: rgba(148, 163, 184, 0.35);
    --message-detail-label: var(--text-primary);
    --message-detail-value: var(--text-secondary);
    --message-detail-link: var(--primary);

    --shadow-sm: 0 2px 12px rgba(148, 163, 184, 0.18);
    --shadow-md: 0 18px 45px rgba(148, 163, 184, 0.28);
    --shadow-lg: 0 45px 90px rgba(148, 163, 184, 0.32);
}