/* ==========================================================================
   FERMENTO — CSS Variables / Design Tokens
   La prima piattaforma italiana per il private label alcolico
   ========================================================================== */

:root {
  /* --- Colors --- */
  --color-primary: #6B213F;
  --color-primary-dark: #4A1A2E;
  --color-primary-light: #8B3A5A;
  --color-accent: #C4A265;
  --color-accent-light: #D4B87A;
  --color-bg: #FFFFFF;
  --color-bg-warm: #F5F0EB;
  --color-bg-dark: #2D2D2D;
  --color-text: #2D2D2D;
  --color-text-light: #666666;
  --color-text-inverse: #FFFFFF;
  --color-success: #278B4C;
  --color-error: #C0392B;
  --color-border: #E0D6CC;
  --color-border-light: #F0EBE5;

  /* --- Typography --- */
  --font-heading: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-logo: 'Oswald', 'Arial Narrow', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  /* Cinematic display: Impact for dramatic uppercase headings (B+C direction) */
  --font-impact: 'Impact', 'Arial Narrow', 'Helvetica Neue Condensed', sans-serif;

  /* Font Sizes */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 1.75rem;   /* 28px */
  --text-4xl: 2rem;      /* 32px */
  --text-5xl: 2.5rem;    /* 40px */
  --text-6xl: 3rem;      /* 48px */
  --text-7xl: 4rem;      /* 64px */

  /* Font Weights */
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* Line Heights */
  --lh-tight: 1.2;
  --lh-normal: 1.5;
  --lh-relaxed: 1.7;

  /* --- Spacing (4px base) --- */
  --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 */

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

  /* --- Border Radius --- */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* --- Shadows --- */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
  --shadow-card: 0 2px 8px rgba(107, 33, 63, 0.06);
  --shadow-card-hover: 0 8px 24px rgba(107, 33, 63, 0.12);

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

  /* --- Z-index --- */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-navbar: 500;
  --z-modal-backdrop: 900;
  --z-modal: 1000;

  /* --- Alpha Variants (brand + neutrals) ---
     Per gradient/glow/overlay/shadow consistenza. Sostituiscono rgba() hardcoded. */
  --color-primary-rgb: 107, 33, 63;        /* per rgba(var(--color-primary-rgb), .X) */
  --color-primary-light-rgb: 140, 50, 85;
  --color-primary-glow-rgb: 180, 60, 110;
  --color-primary-alpha-06: rgba(107, 33, 63, 0.06);   /* shadow-card tinted */
  --color-primary-alpha-12: rgba(107, 33, 63, 0.12);   /* shadow-card-hover */
  --color-primary-alpha-25: rgba(107, 33, 63, 0.25);   /* drop-shadow soft brand */
  --color-primary-alpha-35: rgba(107, 33, 63, 0.35);   /* drop-shadow medium brand */
  --color-primary-alpha-45: rgba(107, 33, 63, 0.45);   /* glow strong */
  --color-primary-alpha-55: rgba(107, 33, 63, 0.55);   /* gradient core */

  /* Inverse (white) alpha for text/borders on dark backgrounds */
  --color-inverse-alpha-85: rgba(255, 255, 255, 0.85); /* primary body on dark */
  --color-inverse-alpha-80: rgba(255, 255, 255, 0.80); /* secondary body */
  --color-inverse-alpha-75: rgba(255, 255, 255, 0.75); /* secondary on dark */
  --color-inverse-alpha-70: rgba(255, 255, 255, 0.70); /* tertiary text */
  --color-inverse-alpha-60: rgba(255, 255, 255, 0.60); /* muted footer */
  --color-inverse-alpha-50: rgba(255, 255, 255, 0.50); /* disabled text */
  --color-inverse-alpha-40: rgba(255, 255, 255, 0.40); /* footer micro-text */
  --color-inverse-alpha-35: rgba(255, 255, 255, 0.35); /* bubble highlight */
  --color-inverse-alpha-20: rgba(255, 255, 255, 0.20); /* hover border */
  --color-inverse-alpha-15: rgba(255, 255, 255, 0.15); /* border on dark */
  --color-inverse-alpha-10: rgba(255, 255, 255, 0.10); /* subtle bg overlay */
  --color-inverse-alpha-08: rgba(255, 255, 255, 0.08); /* subtle separator */

  /* Overlay (black) alpha for scrims */
  --color-overlay-light: rgba(0, 0, 0, 0.15);
  --color-overlay-medium: rgba(0, 0, 0, 0.3);
  --color-overlay-strong: rgba(0, 0, 0, 0.5);
  --color-overlay-very-strong: rgba(0, 0, 0, 0.7);

  /* Brand-tinted drop shadows for product imagery (hero bottle, cards) */
  --drop-shadow-brand-heavy: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.7)) drop-shadow(0 10px 25px rgba(107, 33, 63, 0.35));
  --drop-shadow-brand-soft: drop-shadow(0 10px 20px rgba(107, 33, 63, 0.18));

  /* Page hero composite padding (era 160px 0 80px hardcoded) */
  --page-hero-padding-y-top: 10rem;     /* 160px */
  --page-hero-padding-y-bottom: 5rem;   /* 80px */

  /* ==========================================================================
     WARM-CINEMATIC PALETTE (direzione B+C scelta per il restyling 2026-06)
     Bordeaux drammatico (B) + cream warm carta cotone (C) + oro brunito
     Sostituisce gradualmente i colori più "tech" delle sezioni standard.
     ========================================================================== */
  --color-cream:           #F2EBDD;   /* background warm dominante */
  --color-cream-darker:    #EBE0CB;   /* sezione contrasto sottile (stats) */
  --color-cream-deeper:    #E5D7BD;   /* hover/active warm */
  --color-ink:             #2D2018;   /* testo principale warm (sostituisce nero) */
  --color-ink-medium:      #5a4530;   /* testo secondario warm */
  --color-ink-light:       #8a6f50;   /* testo terziario terra */
  --color-gold-warm:       #C4A265;   /* oro brunito artigianale (accent) */
  --color-gold-warm-dark:  #A98548;   /* oro hover/scuro */
  --color-primary-deep:    #5a1a35;   /* bordeaux intermedio per gradient */
  --color-primary-darker:  #2D0815;   /* bordeaux super dark per profondità */

  /* RGB triplets per gradient/alpha (warm palette) */
  --color-cream-rgb:        242, 235, 221;
  --color-ink-rgb:          45, 32, 24;
  --color-gold-warm-rgb:    196, 162, 101;
  --color-primary-deep-rgb: 90, 26, 53;

  /* Alpha variants warm */
  --color-ink-alpha-12:    rgba(45, 32, 24, 0.12);   /* bordi divider sottili */
  --color-ink-alpha-18:    rgba(45, 32, 24, 0.18);   /* bordi card */
  --color-ink-alpha-25:    rgba(45, 32, 24, 0.25);   /* bordi enfasi */
  --color-gold-alpha-30:   rgba(196, 162, 101, 0.30);
  --color-cream-alpha-90:  rgba(242, 235, 221, 0.90);
  --color-cream-alpha-85:  rgba(242, 235, 221, 0.85);
  --color-cream-alpha-45:  rgba(242, 235, 221, 0.45);
  --color-cream-alpha-12:  rgba(242, 235, 221, 0.12);

  /* Cream paper texture (radial gradient warm, simula carta cotone) */
  --texture-cream-paper:
    radial-gradient(circle at 15% 25%, rgba(139, 90, 50, 0.05) 0%, transparent 55%),
    radial-gradient(circle at 85% 75%, rgba(107, 33, 63, 0.04) 0%, transparent 55%);

  /* Cinematic hero gradient bordeaux (B+C) */
  --gradient-hero-cinematic: linear-gradient(135deg, #6B213F 0%, #5a1a35 50%, #4A1A2E 100%);
  --gradient-card-bordeaux:  linear-gradient(180deg, #6B213F 0%, #5a1a35 100%);
  --gradient-card-deep:      linear-gradient(180deg, #5a1a35 0%, #4A1A2E 100%);

  /* ==========================================================================
     ABISSI SUB-IDENTITY
     Sotto-identità visiva per la branca Fermento Abissi (affinamento subacqueo).
     Eredita typography e spacing globali; sovrascrive solo palette + accent.
     IMPORTANT: il burgundy Fermento NON va usato nelle sezioni Abissi.
     ========================================================================== */
  --abissi-deep:    #0A2A43;   /* Blu abisso — colore dominante */
  --abissi-navy:    #142E4A;   /* Navy intermedio — card, bg secondari */
  --abissi-gold:    #B88A3A;   /* Oro brunito — accent, CTA, numeri */
  --abissi-gold-hi: #D4A555;   /* Oro hover/highlight */
  --abissi-foam:    #D7E3EC;   /* Azzurro chiaro (schiuma) — hover, divider */
  --abissi-sand:    #F2EEE6;   /* Sabbia bagnata — sfondi caldi */
  --abissi-ink:     #081826;   /* Quasi nero blu — testo su chiaro */
  --abissi-white:   #FFFFFF;
  --abissi-overlay: linear-gradient(180deg, rgba(20, 46, 74, 0.4) 0%, rgba(8, 24, 38, 0.9) 100%);
  --abissi-bg-gradient: linear-gradient(180deg, #142E4A 0%, #0A2A43 60%, #081826 100%);
  --abissi-shadow-card: 0 4px 20px rgba(8, 24, 38, 0.35);
  --abissi-shadow-gold: 0 4px 20px rgba(184, 138, 58, 0.25);
}