/* Sistema de design do FitMind.
   Paleta dark + violeta, tipografia display/body, tokens de movimento. */

:root {
  /* Superfícies */
  --bg-void: #0a0712;
  --bg-surface: #140f20;
  --bg-surface-2: #1c1530;
  --bg-surface-3: #241b3c;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  /* Acento violeta */
  --violet-300: #c9b8fb;
  --violet-400: #a78bfa;
  --violet-500: #8b5cf6;
  --violet-600: #7c3aed;
  --violet-glow: rgba(139, 92, 246, 0.45);
  --accent-gradient: linear-gradient(135deg, #8b5cf6 0%, #c026d3 100%);

  /* Texto */
  --text-primary: #f6f4fb;
  --text-secondary: #b6afc6;
  --text-muted: #766f88;

  /* Tipografia */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  /* Forma */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 28px;
  --radius-pill: 999px;

  /* Movimento */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 220ms;
  --duration-base: 500ms;
  --duration-slow: 900ms;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-body);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  line-height: 1.05;
}

/* --- Botões --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out-expo),
    box-shadow var(--duration-fast) var(--ease-out-expo),
    background-color var(--duration-fast) var(--ease-out-expo);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 8px 30px -8px var(--violet-glow);
}

.btn-accent:hover {
  box-shadow: 0 14px 40px -6px var(--violet-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-ghost:hover {
  background: var(--bg-surface-2);
  border-color: var(--violet-400);
}

/* --- Badge/eyebrow --- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--violet-300);
}

.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-gradient);
}

/* --- Reveal on scroll --- */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
    transform var(--duration-slow) var(--ease-out-expo);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-group] > * {
  transition-delay: calc(var(--reveal-index, 0) * 90ms);
}

/* --- Glow orb decorations (fundo abstrato, sem fotos) --- */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
  animation: float-orb 14s ease-in-out infinite;
}

@keyframes float-orb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(20px, -30px) scale(1.08); }
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}