/* ================================================
   ARTISTAHUB — Velvet Stage Design System
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;0,900;1,400;1,700&family=DM+Sans:wght@300;400;500;600&display=swap');

/* ── Variables ── */
:root {
  --gold:        #B8922A;
  --gold-light:  #D4A843;
  --gold-dim:    #6B4F18;
  --black:       #0A0A0A;
  --surface:     #111111;
  --surface-2:   #181818;
  --surface-3:   #222222;
  --border:      rgba(201, 168, 76, 0.15);
  --border-hover:rgba(201, 168, 76, 0.45);
  --text:        #F0EDE6;
  --text-muted:  #8A8278;
  --text-dim:    #4A4540;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'DM Sans', system-ui, sans-serif;

  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out:   cubic-bezier(0.4, 0, 0.2, 1);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --glow: 0 0 40px rgba(201, 168, 76, 0.12);
  --glow-strong: 0 0 60px rgba(201, 168, 76, 0.25);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  background: var(--black);
  color: var(--text);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; cursor: pointer; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul { list-style: none; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--black); }
::-webkit-scrollbar-thumb { background: var(--gold-dim); border-radius: 3px; }

/* ── Noise Texture Overlay ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.035'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 1000;
  opacity: 0.6;
}

/* ── Gold Divider ── */
.gold-line {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  margin: 0 auto;
}

.gold-line--left { margin: 0; }

/* ── Section Label ── */
.section-label {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.75rem;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all 0.3s var(--ease-out-expo);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.btn--primary {
  background: var(--gold);
  color: var(--black);
}

.btn--primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.15);
  opacity: 0;
  transition: opacity 0.3s;
}

.btn--primary:hover::after { opacity: 1; }
.btn--primary:hover { box-shadow: var(--glow-strong); transform: translateY(-1px); }

.btn--outline {
  border: 1px solid var(--border-hover);
  color: var(--gold);
  background: transparent;
}

.btn--outline:hover {
  background: rgba(201, 168, 76, 0.08);
  border-color: var(--gold);
  box-shadow: var(--glow);
  transform: translateY(-1px);
}

/* ── Fade-in Animation ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hero elements always visible — não dependem de scroll */
.hero .reveal {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }