/* =====================================================
   EIDP — main.css
   Tokens, Reset, Typography, Layout, Buttons, Utils
   ===================================================== */

/*
  NOTA GDPR FONT:
  Per conformità GDPR completa rimuovere il link Google Fonts nell'HTML
  e sostituire con @font-face self-hosted. Scaricare da:
  - Inter: https://fonts.google.com/specimen/Inter
  - Space Grotesk: https://fonts.google.com/specimen/Space+Grotesk
*/

/* ─── Custom Properties ─── */
:root {
  /* Background */
  --color-bg-primary:    #07080F;
  --color-bg-secondary:  #0D0F1C;
  --color-bg-tertiary:   #131629;
  --color-surface:       #161A2E;
  --color-surface-hover: #1C2140;
  --color-border:        #1E2340;
  --color-border-subtle: #14172A;

  /* Text */
  --color-text-primary:   #EEF0FF;
  --color-text-secondary: #9BA3C7;
  --color-text-muted:     #5C6490;

  /* Brand — violet/indigo */
  --color-brand:         #7C5CFC;
  --color-brand-dark:    #5B3EDB;
  --color-brand-light:   #A47CFF;
  --color-brand-glow:    rgba(124, 92, 252, 0.3);
  --color-brand-subtle:  rgba(124, 92, 252, 0.08);
  --color-brand-border:  rgba(124, 92, 252, 0.25);

  /* Accent */
  --color-accent:      #C084FC;
  --color-accent-warm: #FF7A2F;

  /* States */
  --color-success: #34D399;
  --color-error:   #F87171;

  /* Gradients */
  --gradient-brand:       linear-gradient(135deg, #7C5CFC 0%, #C084FC 100%);
  --gradient-brand-text:  linear-gradient(135deg, #A47CFF 0%, #C084FC 60%, #E879F9 100%);
  --gradient-hero-radial: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(124,92,252,0.18) 0%, transparent 70%);
  --gradient-card:        linear-gradient(135deg, rgba(124,92,252,0.06) 0%, rgba(192,132,252,0.02) 100%);

  /* Typography */
  --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-hero:    clamp(2.4rem, 5.5vw, 4.25rem);
  --text-section: clamp(1.65rem, 3vw, 2.4rem);

  --weight-normal:   400;
  --weight-medium:   500;
  --weight-semibold: 600;
  --weight-bold:     700;

  --leading-tight:   1.15;
  --leading-snug:    1.35;
  --leading-normal:  1.6;
  --leading-relaxed: 1.75;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --section-py: clamp(4rem, 8vw, 7rem);

  /* Layout */
  --container-max: 1200px;
  --container-px:  clamp(1.25rem, 5vw, 2.5rem);

  /* Border Radius */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:    0 1px 3px rgba(0,0,0,0.5), 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md:    0 4px 20px rgba(0,0,0,0.6), 0 2px 8px rgba(0,0,0,0.4);
  --shadow-lg:    0 20px 50px rgba(0,0,0,0.7), 0 8px 20px rgba(0,0,0,0.4);
  --shadow-brand: 0 8px 32px rgba(124,92,252,0.35);
  --shadow-brand-sm: 0 4px 16px rgba(124,92,252,0.25);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
  --transition-spring: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-index */
  --z-nav:    100;
  --z-modal:  200;
  --z-cookie: 300;

  /* Nav */
  --nav-height: 72px;
}

/* ─── Reset ─── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-normal);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
}

/* ─── Skip link ─── */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-brand);
  color: #fff;
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-sm);
  font-weight: var(--weight-semibold);
  z-index: 999;
  transition: top var(--transition-fast);
  text-decoration: none;
}
.skip-link:focus {
  top: var(--space-4);
}

/* ─── Base elements ─── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
}

p {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

a {
  color: var(--color-brand-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-accent); }

img, svg { display: block; max-width: 100%; }
ul, ol   { list-style: none; }
button   { cursor: pointer; font-family: var(--font-body); border: none; background: none; }
input, textarea, select { font-family: var(--font-body); font-size: var(--text-base); }

/* ─── Layout ─── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
}

.section { padding-block: var(--section-py); }
.section--alt      { background-color: var(--color-bg-secondary); }
.section--tertiary { background-color: var(--color-bg-tertiary); }

/* ─── Section header ─── */
.section-header {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4);
  background: var(--color-brand-subtle);
  border: 1px solid var(--color-brand-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-brand-light);
  margin-bottom: var(--space-4);
}

.section-headline {
  font-size: var(--text-section);
  font-weight: var(--weight-bold);
  line-height: var(--leading-snug);
  margin-bottom: var(--space-4);
}

.gradient-text {
  background: var(--gradient-brand-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-sub {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  font-family: var(--font-body);
  line-height: 1;
  text-decoration: none;
  transition: all var(--transition-base);
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: var(--shadow-brand-sm);
}
.btn-primary:hover {
  box-shadow: var(--shadow-brand);
  transform: translateY(-2px);
  color: #fff;
}
.btn-primary:active  { transform: translateY(0); }

.btn-secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  border-color: var(--color-brand);
  color: var(--color-brand-light);
  background: var(--color-brand-subtle);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}
.btn-ghost:hover { color: var(--color-brand-light); }

.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-sm); }
.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  border-radius: var(--radius-lg);
}

/* ─── Utilities ─── */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* ─── Reduced motion ─── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ─── RTL support (Arabic) ─── */
[dir="rtl"] { text-align: right; }
[dir="rtl"] .navbar__links        { flex-direction: row-reverse; }
[dir="rtl"] .lang-switcher        { order: -1; }
[dir="rtl"] .hero__cta            { flex-direction: row-reverse; }
[dir="rtl"] .section__badge       { margin-inline: 0 auto; }
[dir="rtl"] .footer__grid         { direction: rtl; }
[dir="rtl"] .cookie-banner        { text-align: right; }
[dir="rtl"] .legal-content ul     { padding-left: 0; padding-right: var(--space-6); }
[dir="rtl"] .legal-nav__back      { flex-direction: row-reverse; }