/* ============================================================
   Felipe Sauma — portfólio
   Estilo do site. Você raramente vai precisar mexer aqui.
   ============================================================ */

:root {
  --black: #000000;
  --white: #ffffff;
  --gray-500: #6b7280;
  --gray-100: #f3f4f6;
  --gray-bg: #f3f4f6;
  --header-h: 64px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--black);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-osx-font-smoothing: grayscale;
  line-height: 1.6;
}

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

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

/* ---- container ---- */
.container {
  width: 100%;
  margin-inline: auto;
  padding-inline: 1rem;
}
@media (min-width: 640px)  { .container { max-width: 640px; } }
@media (min-width: 768px)  { .container { max-width: 768px; } }
@media (min-width: 1024px) { .container { max-width: 1024px; } }
@media (min-width: 1280px) { .container { max-width: 1280px; } }

/* ---- header ---- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.site-header .bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.brand {
  font-size: 1.125rem;
  font-weight: 300;
  letter-spacing: 0.02em;
  transition: opacity 0.2s;
}
.brand:hover { opacity: 0.7; }
.brand strong { font-weight: 400; }
.brand .muted { color: var(--gray-500); }

.nav { display: flex; align-items: center; gap: 2rem; }
.nav a {
  font-size: 0.875rem;
  transition: opacity 0.2s;
}
.nav a:hover { opacity: 0.7; }
.nav a.active { font-weight: 500; }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #000;
  margin: 5px 0;
  transition: all 0.3s;
}

@media (max-width: 767px) {
  .menu-toggle { display: block; }
  .nav {
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(255,255,255,0.98);
    border-top: 1px solid var(--gray-100);
    padding: 0.5rem 0;
    display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: 0.75rem 1rem; width: 100%; }
}

/* ---- main ---- */
main { min-height: 100vh; padding-top: var(--header-h); }

/* ---- home grid ---- */
.grid-wrap { padding-inline: 0; }
@media (min-width: 640px) { .grid-wrap { padding-inline: 1rem; } }

.work-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.25rem;
}
@media (min-width: 640px)  { .work-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .work-grid { grid-template-columns: repeat(3, 1fr); } }

.card {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--gray-bg);
}
.card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.card:hover img { transform: scale(1.05); }
.card .overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  transition: background 0.3s;
  display: flex;
  align-items: flex-end;
}
.card:hover .overlay { background: rgba(0,0,0,0.30); }
.card .label {
  padding: 1rem;
  width: 100%;
  transform: translateY(100%);
  transition: transform 0.3s;
}
.card:hover .label { transform: translateY(0); }
.card .label h3 {
  margin: 0;
  color: #fff;
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: lowercase;
}
/* No touch (celular), mostra o título sempre para não depender do hover */
@media (hover: none) {
  .card .overlay { background: rgba(0,0,0,0.15); }
  .card .label { transform: translateY(0); }
}

/* ---- páginas de conteúdo (sobre, contato, projeto) ---- */
.page { padding-top: 3rem; padding-bottom: 3rem; }
.page h1 {
  font-size: 2.25rem;
  font-weight: 300;
  text-transform: lowercase;
  margin: 0 0 1.5rem;
}
.page h2 {
  font-size: 1.25rem;
  font-weight: 400;
  text-transform: lowercase;
  margin: 2.5rem 0 0.75rem;
}
.page h3 {
  font-size: 1rem;
  font-weight: 500;
  text-transform: lowercase;
  margin: 2rem 0 0.5rem;
}
.page p { margin: 0 0 1rem; max-width: 640px; }
.muted { color: var(--gray-500); }

.back-link {
  display: inline-block;
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: 1.5rem;
  transition: opacity 0.2s;
}
.back-link:hover { opacity: 0.6; }

.meta-line { color: var(--gray-500); margin: 0.25rem 0; }

/* vídeos 16:9 */
.video-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin: 1rem 0;
  background: #000;
}
.video-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* miniatura de vídeo do YouTube (abre em nova aba) */
.yt-card { display: block; cursor: pointer; text-decoration: none; }
.yt-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.yt-card .yt-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.18);
  transition: background 0.25s;
}
.yt-card:hover .yt-play { background: rgba(0, 0, 0, 0.32); }
.yt-card .yt-play svg { width: 72px; height: 51px; }
.yt-card .yt-play .yt-bg { fill: #000; opacity: 0.75; transition: opacity 0.25s; }
.yt-card:hover .yt-play .yt-bg { opacity: 0.9; }
.yt-card .yt-play .yt-tri { fill: #fff; }

.gallery img {
  width: 100%;
  height: auto;
  margin: 1rem 0;
  background: var(--gray-bg);
}

.contact-list a { text-decoration: underline; text-underline-offset: 3px; }
.contact-list a:hover { opacity: 0.6; }

/* ---- footer ---- */
.site-footer {
  padding: 2rem 0;
  margin-top: 4rem;
  border-top: 1px solid var(--gray-100);
  text-align: center;
}
.site-footer p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--gray-500);
}

/* acessibilidade: foco visível */
a:focus-visible, button:focus-visible {
  outline: 2px solid #000;
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}