/* ==========================================================================
   Alpha SI — Design Tokens / CSS Custom Properties
   Modo Claro (default) + Modo Oscuro
   ========================================================================== */

/* ---- Google Fonts (Space Grotesk + DM Sans) loaded in functions.php ---- */

:root {
    /* ---- Tipografía ---- */
    --font-primary: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Space Grotesk', 'DM Sans', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    --fs-xs: 0.75rem;     /* 12px */
    --fs-sm: 0.875rem;    /* 14px */
    --fs-base: 1rem;      /* 16px */
    --fs-md: 1.125rem;    /* 18px */
    --fs-lg: 1.25rem;     /* 20px */
    --fs-xl: 1.5rem;      /* 24px */
    --fs-2xl: 2rem;       /* 32px */
    --fs-3xl: 2.5rem;     /* 40px */
    --fs-4xl: 3rem;       /* 48px */
    --fs-5xl: 3.75rem;    /* 60px */

    --fw-normal: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;
    --fw-extrabold: 800;

    --lh-tight: 1.15;
    --lh-snug: 1.3;
    --lh-normal: 1.6;
    --lh-relaxed: 1.75;

    /* ---- Espaciado ---- */
    --space-1: 0.25rem;   /* 4px */
    --space-2: 0.5rem;    /* 8px */
    --space-3: 0.75rem;   /* 12px */
    --space-4: 1rem;      /* 16px */
    --space-5: 1.25rem;   /* 20px */
    --space-6: 1.5rem;    /* 24px */
    --space-8: 2rem;      /* 32px */
    --space-10: 2.5rem;   /* 40px */
    --space-12: 3rem;     /* 48px */
    --space-16: 4rem;     /* 64px */
    --space-20: 5rem;     /* 80px */
    --space-24: 6rem;     /* 96px */
    --space-32: 8rem;     /* 128px */

    /* ---- Contenedores ---- */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1200px;
    --container-2xl: 1400px;

    /* ---- Bordes ---- */
    --radius-sm: 0.375rem;    /* 6px */
    --radius-md: 0.5rem;      /* 8px */
    --radius-lg: 0.75rem;     /* 12px */
    --radius-xl: 1rem;        /* 16px */
    --radius-2xl: 1.5rem;     /* 24px */
    --radius-full: 9999px;

    /* ---- Sombras ---- */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.04);
    --shadow-glow: 0 0 25px rgba(255,208,0,0.15), 0 0 50px rgba(255,149,0,0.08);

    /* ---- Transiciones ---- */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* ---- Z-index scale ---- */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-overlay: 300;
    --z-modal: 400;
    --z-toast: 500;

    /* ---- Gradientes de marca (Amarillo #FFD000 / #FF9500) ---- */
    --gradient-brand: linear-gradient(135deg, #FFD000 0%, #FFB300 50%, #FF9500 100%);
    --gradient-brand-hover: linear-gradient(135deg, #E6BB00 0%, #E6A200 50%, #E68600 100%);
    --gradient-brand-animated: linear-gradient(-45deg, #FFD000, #FFB300, #FF9500, #FFD000, #FFB300);
    --gradient-hero: linear-gradient(135deg, #0A0A0F 0%, #1A1A2E 25%, #FFD000 50%, #FFB300 75%, #FF9500 100%);
    --gradient-subtle: linear-gradient(135deg, rgba(255,208,0,0.05) 0%, rgba(255,179,0,0.05) 50%, rgba(255,149,0,0.05) 100%);
    --gradient-card: linear-gradient(135deg, rgba(255,208,0,0.08) 0%, rgba(255,179,0,0.04) 50%, rgba(255,149,0,0.04) 100%);
    --gradient-text: linear-gradient(135deg, #FFD000, #FFB300, #FF9500);
}

/* ==========================================================================
   MODO CLARO (Light Theme — Default)
   ========================================================================== */
:root,
[data-theme="light"] {
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-bg-elevated: #ffffff;
    --color-bg-muted: #f1f5f9;
    --color-bg-inverse: #0f172a;

    --color-surface: #ffffff;
    --color-surface-hover: #f8fafc;
    --color-surface-active: #f1f5f9;
    --color-surface-border: #e2e8f0;

    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-text-tertiary: #94a3b8;
    --color-text-inverse: #f8fafc;
    --color-text-link: #D4A800;
    --color-text-link-hover: #B38F00;

    --color-primary: #FFD000;
    --color-primary-hover: #E6BB00;
    --color-primary-active: #CC9E00;
    --color-primary-light: #FFF8DC;
    --color-primary-text: #1a1a2e;

    --color-secondary: #FF9500;
    --color-secondary-hover: #E68600;

    --color-accent: #FFB300;
    --color-accent-hover: #E6A200;

    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;
    --color-border-strong: #cbd5e1;

    --color-header-bg: rgba(255,255,255,0.85);
    --color-header-bg-scrolled: rgba(255,255,255,0.95);

    --color-footer-bg: #0f172a;
    --color-footer-text: #cbd5e1;
    --color-footer-heading: #f8fafc;

    --color-card-bg: #ffffff;
    --color-card-border: #e2e8f0;
    --color-card-shadow: rgba(0,0,0,0.04);

    --color-badge-bg: #FFF8DC;
    --color-badge-text: #B38F00;

    --color-code-bg: #f1f5f9;

    /* Glass effect */
    --glass-bg: rgba(255,255,255,0.6);
    --glass-border: rgba(255,255,255,0.3);
    --glass-blur: 20px;

    --hero-overlay: rgba(15,23,42,0.03);
}

/* ==========================================================================
   MODO OSCURO (Dark Theme)
   ========================================================================== */
[data-theme="dark"] {
    --color-bg: #0b0f1a;
    --color-bg-alt: #0f1629;
    --color-bg-elevated: #151d35;
    --color-bg-muted: #1a2342;
    --color-bg-inverse: #f8fafc;

    --color-surface: #151d35;
    --color-surface-hover: #1a2342;
    --color-surface-active: #1e2a4a;
    --color-surface-border: #243154;

    --color-text: #e2e8f0;
    --color-text-secondary: #94a3b8;
    --color-text-tertiary: #64748b;
    --color-text-inverse: #0f172a;
    --color-text-link: #FFD54F;
    --color-text-link-hover: #FFE082;

    --color-primary: #FFD000;
    --color-primary-hover: #FFD54F;
    --color-primary-active: #E6BB00;
    --color-primary-light: rgba(255,208,0,0.15);
    --color-primary-text: #0f172a;

    --color-secondary: #FF9500;
    --color-secondary-hover: #FFB347;

    --color-accent: #FFB300;
    --color-accent-hover: #FFCA28;

    --color-success: #34d399;
    --color-warning: #fbbf24;
    --color-error: #f87171;
    --color-info: #60a5fa;

    --color-border: #243154;
    --color-border-light: #1a2342;
    --color-border-strong: #334671;

    --color-header-bg: rgba(11,15,26,0.85);
    --color-header-bg-scrolled: rgba(11,15,26,0.95);

    --color-footer-bg: #060a14;
    --color-footer-text: #94a3b8;
    --color-footer-heading: #e2e8f0;

    --color-card-bg: #151d35;
    --color-card-border: #243154;
    --color-card-shadow: rgba(0,0,0,0.2);

    --color-badge-bg: rgba(255,208,0,0.2);
    --color-badge-text: #FFD54F;

    --color-code-bg: #1a2342;

    /* Glass effect */
    --glass-bg: rgba(21,29,53,0.6);
    --glass-border: rgba(36,49,84,0.5);
    --glass-blur: 20px;

    --hero-overlay: rgba(0,0,0,0.2);

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.3), 0 2px 4px -2px rgba(0,0,0,0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.35), 0 4px 6px -4px rgba(0,0,0,0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.4), 0 8px 10px -6px rgba(0,0,0,0.2);
    --shadow-glow: 0 0 30px rgba(255,208,0,0.2), 0 0 60px rgba(255,149,0,0.1);
}

/* Honor system preference when no explicit theme is set */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --color-bg: #0b0f1a;
        --color-bg-alt: #0f1629;
        --color-bg-elevated: #151d35;
        --color-bg-muted: #1a2342;
        --color-bg-inverse: #f8fafc;
        --color-surface: #151d35;
        --color-surface-hover: #1a2342;
        --color-surface-active: #1e2a4a;
        --color-surface-border: #243154;
        --color-text: #e2e8f0;
        --color-text-secondary: #94a3b8;
        --color-text-tertiary: #64748b;
        --color-text-inverse: #0f172a;
        --color-text-link: #FFD54F;
        --color-text-link-hover: #FFE082;
        --color-primary: #FFD000;
        --color-primary-hover: #FFD54F;
        --color-primary-active: #E6BB00;
        --color-primary-light: rgba(255,208,0,0.15);
        --color-primary-text: #0f172a;
        --color-secondary: #FF9500;
        --color-secondary-hover: #FFB347;
        --color-accent: #FFB300;
        --color-accent-hover: #FFCA28;
        --color-success: #34d399;
        --color-warning: #fbbf24;
        --color-error: #f87171;
        --color-info: #60a5fa;
        --color-border: #243154;
        --color-border-light: #1a2342;
        --color-border-strong: #334671;
        --color-header-bg: rgba(11,15,26,0.85);
        --color-header-bg-scrolled: rgba(11,15,26,0.95);
        --color-footer-bg: #060a14;
        --color-footer-text: #94a3b8;
        --color-footer-heading: #e2e8f0;
        --color-card-bg: #151d35;
        --color-card-border: #243154;
        --color-card-shadow: rgba(0,0,0,0.2);
        --color-badge-bg: rgba(255,208,0,0.2);
        --color-badge-text: #FFD54F;
        --color-code-bg: #1a2342;
        --glass-bg: rgba(21,29,53,0.6);
        --glass-border: rgba(36,49,84,0.5);
        --glass-blur: 20px;
        --hero-overlay: rgba(0,0,0,0.2);
        --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
        --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.3), 0 2px 4px -2px rgba(0,0,0,0.2);
        --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.35), 0 4px 6px -4px rgba(0,0,0,0.2);
        --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.4), 0 8px 10px -6px rgba(0,0,0,0.2);
        --shadow-glow: 0 0 30px rgba(255,208,0,0.2), 0 0 60px rgba(255,149,0,0.1);
    }
}