/* ============================================
   felipecs.com — Estilos principais
   ============================================ */

/* --- Design Tokens --- */
:root {
  --bg-primary: #07070a;
  --bg-secondary: #12121e;
  --card-bg: rgba(255, 255, 255, 0.04);
  --card-border: rgba(255, 255, 255, 0.08);
  --card-hover-bg: rgba(255, 255, 255, 0.07);
  --card-hover-border: rgba(130, 130, 255, 0.2);
  --card-hover-glow: rgba(99, 102, 241, 0.12);
  --text-primary: #e2e2e8;
  --text-secondary: #6b6b80;
  --accent: #818cf8;
  --radius: 16px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --font-display: 'Sora', system-ui, sans-serif;
  --font-body: system-ui, -apple-system, sans-serif;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* --- Base --- */
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
  background-image:
    radial-gradient(ellipse 80% 60% at 50% 0%, var(--bg-secondary) 0%, transparent 70%);
}

/* --- Noise overlay --- */
.noise {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 128px 128px;
}

/* --- Layout --- */
.header,
.main,
.footer {
  width: 100%;
  max-width: 720px;
  padding-inline: var(--space-md);
}

/* --- Header --- */
.header {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-lg);
  text-align: center;
  animation: fadeInDown 0.8s ease-out both;
}

.header__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  background: linear-gradient(
    135deg,
    var(--text-primary) 0%,
    var(--accent) 100%
  );
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header__tagline {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(0.875rem, 2vw, 1.05rem);
  color: var(--text-secondary);
  margin-top: var(--space-xs);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* --- Cards Grid --- */
.main {
  flex: 1;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-sm);
}

/* --- Card --- */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-sm);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--text-primary);
  transition:
    transform var(--transition),
    background var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  cursor: pointer;
  /* fade-in animation — triggered by JS */
  opacity: 0;
  transform: translateY(20px);
}

.card.is-visible {
  animation: fadeInUp 0.5s ease-out forwards;
}

/* Stagger cards */
.card:nth-child(1).is-visible { animation-delay: 0s; }
.card:nth-child(2).is-visible { animation-delay: 0.1s; }
.card:nth-child(3).is-visible { animation-delay: 0.2s; }
.card:nth-child(4).is-visible { animation-delay: 0.3s; }
.card:nth-child(5).is-visible { animation-delay: 0.4s; }
.card:nth-child(6).is-visible { animation-delay: 0.5s; }

.card:hover {
  transform: scale(1.03);
  background: var(--card-hover-bg);
  border-color: var(--card-hover-border);
  box-shadow: 0 0 40px var(--card-hover-glow);
}

.card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.card__icon {
  width: 40px;
  height: 40px;
  color: var(--accent);
  transition: color var(--transition);
}

.card:hover .card__icon {
  color: var(--text-primary);
}

.card__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

/* --- Footer --- */
.footer {
  padding-top: var(--space-lg);
  padding-bottom: var(--space-md);
  text-align: center;
  animation: fadeInDown 0.8s ease-out 0.4s both;
}

.footer p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

/* --- Keyframes --- */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Responsive --- */
@media (max-width: 480px) {
  .cards-grid {
    grid-template-columns: 1fr;
  }

  .header {
    padding-top: var(--space-lg);
    padding-bottom: var(--space-md);
  }
}

/* --- Reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .card {
    opacity: 1;
    transform: none;
  }
}