/* ==========================================================================
   FOMO — MAIN CSS (DICE Inspiration / Catania Edition)
   Design essenziale, lineare, ultra-fluido, zero ridondanze
   ========================================================================== */

:root {
  /* Colori e Superfici DICE-inspired */
  --bg-main: #000000;
  --bg-surface: #0e0f12;
  --bg-elevated: #16181d;
  --bg-subtle: #1c1e24;

  /* Bordi & Divisori Sottili */
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(255, 255, 255, 0.25);
  --border-accent: rgba(255, 255, 255, 0.4);

  /* Testo e Tipografia */
  --text-primary: #ffffff;
  --text-secondary: #90929a;
  --text-muted: #5e616b;
  --text-inverse: #000000;

  /* Accento (Giallo / Bianco Ottico DICE) */
  --accent: #ffffff;
  --accent-cta: #d4ff00; /* Volt energetico per CTA primarie */
  --accent-cta-hover: #e5ff40;
  --accent-bg: rgba(212, 255, 0, 0.12);

  /* Font Families Lineari */
  --font-body: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Arial Black', Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Raggio Curvatura (pulito, compatto) */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Spaziature */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 36px;
  --space-2xl: 56px;

  /* Layout */
  --header-height: 64px;
  --container-max-width: 1080px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-main);
  line-height: 1.45;
  letter-spacing: -0.01em;
  overflow-x: hidden;
}

::selection {
  background-color: var(--accent-cta);
  color: var(--text-inverse);
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  border: none;
  background: none;
  outline: none;
}

button {
  cursor: pointer;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  line-height: 1.15;
}

.mono {
  font-family: var(--font-mono);
}

/* App Root */
.app-root {
  flex: 1 0 auto;
  padding-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
  display: flex;
  flex-direction: column;
}

/* Footer Semplificato */
.app-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-main);
  padding: var(--space-xl) 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-left {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.footer-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-right {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.footer-right a:hover {
  color: var(--text-primary);
}

.mobile-tab-bar {
  display: none;
}

@media (max-width: 720px) {
  body { padding-bottom: 76px; }
  .app-footer { display: none; }
  .mobile-tab-bar {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: max(12px, env(safe-area-inset-bottom));
    z-index: 120;
    min-height: 62px;
    padding: 7px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 20px;
    background: rgba(18,18,20,.88);
    backdrop-filter: blur(24px) saturate(150%);
    box-shadow: 0 18px 60px rgba(0,0,0,.55);
  }
  .mobile-tab-bar a {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2px;
    border-radius: 14px;
    color: var(--text-muted);
    font-size: .7rem;
    font-weight: 800;
  }
  .mobile-tab-bar a.active { color: #050505; background: var(--accent-cta); }
  .mobile-tab-icon { font-size: 1.15rem; line-height: 1; }
}