/* ============================================
   CSS Custom Properties - Social Facile
   Dark Tech Theme
   ============================================ */

/* Self-hosted fonts (GDPR — no external CDN). File in ../fnt/ */
@font-face { font-family: 'Plus Jakarta Sans'; font-style: normal; font-weight: 400; font-display: swap; src: url('../fnt/PlusJakartaSans-400.ttf') format('truetype'); }
@font-face { font-family: 'Plus Jakarta Sans'; font-style: normal; font-weight: 500; font-display: swap; src: url('../fnt/PlusJakartaSans-500.ttf') format('truetype'); }
@font-face { font-family: 'Plus Jakarta Sans'; font-style: normal; font-weight: 600; font-display: swap; src: url('../fnt/PlusJakartaSans-600.ttf') format('truetype'); }
@font-face { font-family: 'Plus Jakarta Sans'; font-style: normal; font-weight: 700; font-display: swap; src: url('../fnt/PlusJakartaSans-700.ttf') format('truetype'); }
@font-face { font-family: 'Plus Jakarta Sans'; font-style: normal; font-weight: 800; font-display: swap; src: url('../fnt/PlusJakartaSans-800.ttf') format('truetype'); }

@font-face { font-family: 'Tinos'; font-style: normal;  font-weight: 400; font-display: swap; src: url('../fnt/Tinos-Regular.ttf')    format('truetype'); }
@font-face { font-family: 'Tinos'; font-style: italic;  font-weight: 400; font-display: swap; src: url('../fnt/Tinos-Italic.ttf')     format('truetype'); }
@font-face { font-family: 'Tinos'; font-style: normal;  font-weight: 700; font-display: swap; src: url('../fnt/Tinos-Bold.ttf')       format('truetype'); }
@font-face { font-family: 'Tinos'; font-style: italic;  font-weight: 700; font-display: swap; src: url('../fnt/Tinos-BoldItalic.ttf') format('truetype'); }

:root {
    /* ============================================
       COLORS - Dark Tech Theme
       ============================================ */

    /* Primary Colors */
    --color-bg-primary: #0A0A0A;         /* Deep Black */
    --color-bg-secondary: #1a1a1a;       /* Charcoal */
    --color-bg-tertiary: #2a2a2a;        /* Dark Grey */

    /* Accent Colors */
    --color-accent-primary: #A27ABA;     /* Purple/Violet AI-Tech */
    --color-accent-secondary: #69B4E4;   /* Blue AI-Tech */
    --color-accent-hover: #b890ca;       /* Purple Lighter */

    /* Text Colors */
    --color-text-primary: #FFFFFF;       /* Pure White */
    --color-text-secondary: #B0B0B0;     /* Silver/Grey */
    --color-text-muted: #808080;         /* Dark Grey Text */

    /* Semantic Colors */
    --color-success: #4ade80;
    --color-error: #ef4444;
    --color-warning: #fbbf24;
    --color-orange: #fb923c;             /* Arancio (urgenza media), distinto dall'ambra di warning */
    --color-info: #3b82f6;

    /* Border & Dividers */
    --color-border: #3a3a3a;
    --color-divider: #2a2a2a;

    /* Backgrounds Light (for form inputs on dark) */
    --color-input-bg: #1a1a1a;
    --color-input-bg-focus: #2a2a2a;
    --color-input-border: #3a3a3a;
    --color-input-border-focus: #A27ABA;

    /* ============================================
       TYPOGRAPHY
       ============================================ */

    --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-family-serif: 'Tinos', 'Times New Roman', Times, 'Liberation Serif', serif;

    /* Font Weights */
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;

    /* Font Sizes */
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 1.875rem;    /* 30px */
    --font-size-4xl: 2.25rem;     /* 36px */
    --font-size-5xl: 3rem;        /* 48px */

    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.8;

    /* Letter Spacing */
    --letter-spacing-tight: -0.02em;
    --letter-spacing-normal: 0;
    --letter-spacing-wide: 0.025em;
    --letter-spacing-wider: 0.05em;

    /* ============================================
       SPACING
       ============================================ */

    --spacing-xs: 0.5rem;     /* 8px */
    --spacing-sm: 1rem;       /* 16px */
    --spacing-md: 1.5rem;     /* 24px */
    --spacing-lg: 2rem;       /* 32px */
    --spacing-xl: 3rem;       /* 48px */
    --spacing-2xl: 4rem;      /* 64px */
    --spacing-3xl: 6rem;      /* 96px */

    /* ============================================
       BORDERS & RADIUS
       ============================================ */

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    --border-width-thin: 1px;
    --border-width-medium: 2px;
    --border-width-thick: 3px;

    /* ============================================
       SHADOWS
       ============================================ */

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);

    /* Glow effects */
    --glow-purple: 0 0 20px rgba(162, 122, 186, 0.3);
    --glow-blue: 0 0 20px rgba(105, 180, 228, 0.3);

    /* ============================================
       TRANSITIONS
       ============================================ */

    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 400ms ease-in-out;

    /* ============================================
       Z-INDEX
       ============================================ */

    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;

    /* ============================================
       LAYOUT
       ============================================ */

    --container-max-width: 1200px;
    --content-max-width: 1100px;
    --sidebar-width: 260px;

    /* ============================================
       FORM INPUTS
       ============================================ */

    --input-height: 48px;
    --input-padding-x: 16px;
    --input-padding-y: 12px;
}

/* ============================================
   LIGHT MODE
   Attivato dalla classe .light-mode su <html>
   ============================================ */

html.light-mode {
    --color-bg-primary: #eaeaea;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #F5F5F7;

    --color-text-primary: #1a1a1a;
    --color-text-secondary: #383838;
    --color-text-muted: #626262;

    --color-input-bg: #FFFFFF;
    --color-input-bg-focus: #F5F5F7;
    --color-input-border: #D0D0D5;
    --color-input-border-focus: #A27ABA;

    --color-border: #E5E5EA;
    --color-divider: #E5E5EA;

    /* Semantic overrides — i toni dark sono troppo chiari su bianco */
    --color-success: #16a34a;
    --color-warning: #b45309;
    --color-orange: #c2410c;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.12);

    --glow-purple: 0 0 15px rgba(162, 122, 186, 0.15);
    --glow-blue: 0 0 15px rgba(105, 180, 228, 0.15);
}