/* Product motion — ortak intro / action / hold iskeleti
 * Bkz. PRODUCT-MOTION-HANDBOOK.md
 */
:root {
  --brand: #ef514c;
  --brand-rgb: 239, 81, 76;
  --bg: #07090c;
  --text: #f2f4f8;
  --muted: #8b95a8;
  --line: rgba(255, 255, 255, 0.08);
  --snap: cubic-bezier(0.22, 1, 0.36, 1);
  --punch: cubic-bezier(0.34, 1.4, 0.64, 1);
  /*
    0–14%   logo (~1.5s)
    14–52%  aksiyon
    52–100% son kare tutuş (~5s)
  */
  --cycle: 11s;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.page {
  max-width: 920px;
  margin: 0 auto;
  padding: 1.5rem 1rem 3.5rem;
}

.tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--brand);
  background: rgba(var(--brand-rgb), 0.12);
  border: 1px solid rgba(var(--brand-rgb), 0.35);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  margin-bottom: 0.6rem;
}

h1 {
  font-family: Outfit, sans-serif;
  font-size: clamp(1.35rem, 3vw, 1.8rem);
  margin: 0 0 0.35rem;
  letter-spacing: -0.02em;
}

.lede {
  color: var(--muted);
  margin: 0 0 1.25rem;
  max-width: 62ch;
  line-height: 1.5;
  font-size: 0.92rem;
}

.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 1.75rem;
}

.toc a {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line);
  padding: 0.28rem 0.5rem;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.02);
}

.toc a:hover {
  color: var(--text);
  border-color: rgba(var(--brand-rgb), 0.45);
}

.toc a.is-done {
  color: #7dffb2;
  border-color: rgba(50, 200, 120, 0.35);
}

.clip {
  margin-bottom: 2rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  background: #0c0f14;
}

.clip__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
}

.clip__meta h2 {
  margin: 0;
  font-family: Outfit, sans-serif;
  font-size: 1rem;
  font-weight: 600;
}

.clip__meta p {
  margin: 0.2rem 0 0;
  font-size: 0.78rem;
  color: var(--muted);
  max-width: 54ch;
  line-height: 1.4;
}

.clip__meta .lang {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #ffc86b;
  background: rgba(255, 180, 80, 0.12);
  border: 1px solid rgba(255, 180, 80, 0.35);
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
  white-space: nowrap;
}

.stage {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

/* —— Intro —— */
.intro {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  background:
    radial-gradient(ellipse 60% 50% at 50% 45%, rgba(var(--brand-rgb), 0.16), transparent 60%),
    linear-gradient(165deg, #12151c 0%, #0a0c10 55%, #151922 100%);
  animation: pmIntroOut var(--cycle) linear infinite;
  pointer-events: none;
}

.intro__stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  animation: pmIntroLogo var(--cycle) var(--snap) infinite;
}

.intro__stack img {
  width: min(48%, 240px);
  height: auto;
  display: block;
  filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.35));
}

.intro__title {
  margin: 0;
  font-family: Outfit, sans-serif;
  font-weight: 800;
  font-size: clamp(1.35rem, 3.8vw, 2.2rem);
  letter-spacing: 0.06em;
  color: #fff;
  text-align: center;
  line-height: 1.15;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
}

@keyframes pmIntroOut {
  0%, 12% { opacity: 1; visibility: visible; }
  16% { opacity: 0; }
  16.01%, 100% { opacity: 0; visibility: hidden; }
}

@keyframes pmIntroLogo {
  0% { opacity: 0; transform: scale(0.92); }
  4% { opacity: 1; transform: scale(1); }
  12% { opacity: 1; transform: scale(1); }
  16% { opacity: 0; transform: scale(1.04); }
  100% { opacity: 0; }
}

.action {
  position: absolute;
  inset: 0;
  opacity: 0;
  animation: pmActionIn var(--cycle) linear infinite;
}

@keyframes pmActionIn {
  0%, 13% { opacity: 0; }
  16%, 100% { opacity: 1; }
}

/* Küçük yardımcılar */
.pm-badge {
  display: inline-block;
  font-size: 0.55rem;
  font-weight: 700;
  padding: 0.12rem 0.35rem;
  border-radius: 4px;
}

.pm-panel {
  background: #151922;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.45);
}