/* ============================================================
   FetchWave — stylesheet
   Aesthetic: Dark industrial / brutalist-refined
   ============================================================ */

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

:root {
  --bg:          #080a0f;
  --surface:     #0e1117;
  --surface2:    #161b24;
  --border:      rgba(255,255,255,0.07);
  --border-hi:   rgba(255,255,255,0.15);
  --text:        #e8eaf0;
  --muted:       #6b7280;
  --accent:      #00e5ff;
  --accent2:     #7c3aed;
  --accent3:     #ff5757;
  --best:        #00e5ff;
  --radius:      14px;
  --radius-sm:   8px;
  --font-body:   'Syne', sans-serif;
  --font-mono:   'DM Mono', monospace;
  --transition:  0.22s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* ── NOISE OVERLAY ── */
.noise {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  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");
  background-size: 200px 200px;
  opacity: 0.6;
}

/* ── ORBS ── */
.orb {
  position: fixed; border-radius: 50%; filter: blur(120px);
  pointer-events: none; z-index: 0;
}
.orb-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(0,229,255,0.08) 0%, transparent 70%);
  top: -200px; left: -200px;
  animation: drift1 18s ease-in-out infinite alternate;
}
.orb-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(124,58,237,0.07) 0%, transparent 70%);
  bottom: -150px; right: -100px;
  animation: drift2 22s ease-in-out infinite alternate;
}
.orb-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(255,87,87,0.05) 0%, transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  animation: drift3 28s ease-in-out infinite alternate;
}
@keyframes drift1 { to { transform: translate(80px, 60px); } }
@keyframes drift2 { to { transform: translate(-60px, -80px); } }
@keyframes drift3 { to { transform: translate(-50%, -50%) scale(1.3); } }

/* ── HEADER ── */
.header {
  position: relative; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.5rem 2.5rem;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  background: rgba(8,10,15,0.6);
  position: sticky; top: 0;
}
.logo {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 1.25rem; font-weight: 800; letter-spacing: -0.02em;
}
.logo-icon { color: var(--accent); font-size: 1.4rem; }
.logo-text { color: var(--text); }
.logo-text.small { font-size: 1rem; }
.nav-pills { display: flex; gap: 1.5rem; }
.nav-pills a {
  color: var(--muted); text-decoration: none; font-size: 0.875rem;
  font-family: var(--font-mono); letter-spacing: 0.04em;
  transition: color var(--transition);
}
.nav-pills a:hover { color: var(--accent); }

/* ── HERO ── */
.hero {
  position: relative; z-index: 5;
  text-align: center;
  padding: 7rem 1.5rem 4rem;
  max-width: 860px; margin: 0 auto;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(0,229,255,0.06);
  border: 1px solid rgba(0,229,255,0.2);
  color: var(--accent); font-family: var(--font-mono);
  font-size: 0.75rem; letter-spacing: 0.08em;
  padding: 0.35rem 0.9rem; border-radius: 100px;
  margin-bottom: 2rem;
  animation: fadeUp 0.6s both;
}
.badge-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(1.4)} }

.hero-title {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 800; line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 1.25rem;
  animation: fadeUp 0.6s 0.1s both;
}
.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-family: var(--font-mono); font-size: 1.05rem;
  color: var(--muted); margin-bottom: 3rem;
  animation: fadeUp 0.6s 0.2s both;
}

/* ── INPUT CARD ── */
.input-card {
  background: var(--surface);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: 0 0 0 1px rgba(0,229,255,0.04), 0 32px 64px rgba(0,0,0,0.5);
  animation: fadeUp 0.6s 0.3s both;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.input-card:focus-within {
  border-color: rgba(0,229,255,0.3);
  box-shadow: 0 0 0 1px rgba(0,229,255,0.1), 0 0 40px rgba(0,229,255,0.05), 0 32px 64px rgba(0,0,0,0.5);
}

.input-row {
  display: flex; gap: 0.75rem;
  flex-wrap: wrap;
}
.input-wrap {
  flex: 1 1 300px;
  display: flex; align-items: center;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 0.75rem;
  transition: border-color var(--transition);
}
.input-wrap:focus-within { border-color: rgba(0,229,255,0.4); }
.input-icon { color: var(--accent); font-size: 1.1rem; margin-right: 0.5rem; flex-shrink: 0; }
.url-input {
  flex: 1; background: none; border: none; outline: none;
  color: var(--text); font-family: var(--font-mono); font-size: 0.875rem;
  padding: 0.85rem 0;
}
.url-input::placeholder { color: var(--muted); }
.clear-btn {
  background: none; border: none; cursor: pointer;
  color: var(--muted); font-size: 0.9rem; padding: 4px 6px;
  border-radius: 4px; transition: color var(--transition);
  opacity: 0;
}
.clear-btn.visible { opacity: 1; }
.clear-btn:hover { color: var(--text); }

.fetch-btn {
  display: flex; align-items: center; gap: 0.5rem;
  background: var(--accent); color: #000;
  border: none; cursor: pointer;
  font-family: var(--font-body); font-size: 0.9rem; font-weight: 700;
  padding: 0.85rem 1.75rem; border-radius: var(--radius-sm);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  white-space: nowrap;
}
.fetch-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0,229,255,0.3);
  background: #33eeff;
}
.fetch-btn:active { transform: translateY(0); }
.fetch-btn:disabled {
  opacity: 0.5; cursor: not-allowed; transform: none;
}
.fetch-btn-arrow { font-size: 1.1rem; }

/* ── ERROR ── */
.error-banner {
  display: flex; align-items: center; gap: 0.6rem;
  margin-top: 0.85rem;
  background: rgba(255,87,87,0.08);
  border: 1px solid rgba(255,87,87,0.25);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.9rem;
  font-family: var(--font-mono); font-size: 0.8rem;
  color: var(--accent3);
  animation: fadeUp 0.3s both;
}
.error-icon { font-size: 1rem; flex-shrink: 0; }

/* ── LOADER ── */
.loader-section {
  position: relative; z-index: 5;
  display: flex; flex-direction: column; align-items: center;
  padding: 5rem 1rem; gap: 1.5rem;
}
.wave-loader {
  display: flex; align-items: flex-end; gap: 5px; height: 40px;
}
.wave-loader span {
  width: 6px; border-radius: 4px;
  background: var(--accent);
  animation: wave 1.2s ease-in-out infinite;
}
.wave-loader span:nth-child(1) { animation-delay: 0s; }
.wave-loader span:nth-child(2) { animation-delay: 0.1s; }
.wave-loader span:nth-child(3) { animation-delay: 0.2s; }
.wave-loader span:nth-child(4) { animation-delay: 0.3s; }
.wave-loader span:nth-child(5) { animation-delay: 0.4s; }
@keyframes wave {
  0%, 100% { height: 8px; opacity: 0.4; }
  50% { height: 36px; opacity: 1; }
}
.loader-text {
  font-family: var(--font-mono); font-size: 0.85rem; color: var(--muted);
}

/* ── RESULTS ── */
.results-section {
  position: relative; z-index: 5;
  max-width: 860px; margin: 0 auto;
  padding: 2rem 1.5rem 5rem;
  animation: fadeUp 0.5s both;
}

/* Video meta card */
.video-meta-card {
  display: flex; gap: 1.25rem; align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 2.5rem;
  box-shadow: 0 16px 48px rgba(0,0,0,0.4);
}
.meta-thumb {
  width: 160px; height: 90px; object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  border: 1px solid var(--border);
}
.meta-info { flex: 1; min-width: 0; }
.meta-label {
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--accent); letter-spacing: 0.1em;
  text-transform: uppercase; margin-bottom: 0.4rem;
}
.meta-title {
  font-size: 1.05rem; font-weight: 700;
  line-height: 1.3; margin-bottom: 0.75rem;
  overflow: hidden; display: -webkit-box;
  -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}
.meta-chips { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.chip {
  font-family: var(--font-mono); font-size: 0.72rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 0.25rem 0.6rem; border-radius: 100px;
  color: var(--muted);
}

/* Quality grid */
.quality-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 1rem;
}
.quality-header h3 {
  font-size: 1rem; font-weight: 700; letter-spacing: -0.01em;
}
.quality-count {
  font-family: var(--font-mono); font-size: 0.75rem;
  color: var(--muted);
}

.quality-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.85rem;
}

/* Quality card */
.quality-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  display: flex; flex-direction: column; gap: 0.75rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative; overflow: hidden;
  animation: fadeUp 0.4s both;
}
.quality-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.35);
}
.quality-card.best {
  border-color: rgba(0,229,255,0.35);
  background: linear-gradient(135deg, rgba(0,229,255,0.04) 0%, var(--surface) 60%);
  box-shadow: 0 0 0 1px rgba(0,229,255,0.08), 0 12px 32px rgba(0,0,0,0.35);
}
.quality-card.best:hover {
  border-color: rgba(0,229,255,0.55);
  box-shadow: 0 0 0 1px rgba(0,229,255,0.12), 0 16px 40px rgba(0,229,255,0.08);
}

.card-top {
  display: flex; align-items: center; justify-content: space-between;
}
.format-badge {
  font-family: var(--font-mono); font-size: 0.7rem;
  font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em;
  padding: 0.2rem 0.55rem; border-radius: 4px;
}
.format-badge.mp4 { background: rgba(0,229,255,0.1); color: var(--accent); }
.format-badge.webm { background: rgba(124,58,237,0.12); color: #a78bfa; }
.format-badge.m4a,
.format-badge.mp3 { background: rgba(255,170,0,0.1); color: #fbbf24; }
.format-badge.other { background: rgba(255,255,255,0.06); color: var(--muted); }

.best-tag {
  font-family: var(--font-mono); font-size: 0.65rem;
  font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--bg); background: var(--accent);
  padding: 0.2rem 0.55rem; border-radius: 4px;
}

.quality-label {
  font-size: 1.5rem; font-weight: 800;
  letter-spacing: -0.03em; color: var(--text);
}
.quality-label .quality-sub {
  display: block; font-size: 0.75rem; font-weight: 400;
  font-family: var(--font-mono); color: var(--muted);
  letter-spacing: 0;
}

.card-meta {
  display: flex; gap: 0.5rem; flex-wrap: wrap;
}
.meta-tag {
  font-family: var(--font-mono); font-size: 0.7rem; color: var(--muted);
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px; padding: 0.15rem 0.4rem;
}

/* Download button */
.dl-btn {
  width: 100%;
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-hi);
  background: var(--surface2);
  color: var(--text);
  font-family: var(--font-body); font-size: 0.85rem; font-weight: 700;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition),
              transform var(--transition), box-shadow var(--transition), color var(--transition);
}
.dl-btn:hover {
  background: rgba(255,255,255,0.06);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(0,229,255,0.12);
}
.dl-btn:active { transform: translateY(0); }
.quality-card.best .dl-btn {
  background: var(--accent); color: #000; border-color: var(--accent);
}
.quality-card.best .dl-btn:hover {
  background: #33eeff; border-color: #33eeff; color: #000;
  box-shadow: 0 6px 20px rgba(0,229,255,0.35);
}
.dl-btn-icon { font-size: 1rem; }

/* Shimmer on best button */
.quality-card.best .dl-btn::before {
  content: '';
  position: absolute; top: 0; left: -100%;
  width: 60%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12), transparent);
  animation: shimmer 3s infinite;
}
@keyframes shimmer { to { left: 150%; } }

/* Reset button */
.reset-btn {
  margin-top: 2rem;
  background: none; border: 1px solid var(--border);
  color: var(--muted); cursor: pointer;
  font-family: var(--font-mono); font-size: 0.8rem;
  padding: 0.6rem 1.2rem; border-radius: var(--radius-sm);
  transition: color var(--transition), border-color var(--transition);
}
.reset-btn:hover { color: var(--text); border-color: var(--border-hi); }

/* ── HOW IT WORKS ── */
.how-section,
.faq-section {
  position: relative; z-index: 5;
  max-width: 860px; margin: 0 auto;
  padding: 5rem 1.5rem;
  border-top: 1px solid var(--border);
}
.section-title {
  font-size: 1.75rem; font-weight: 800;
  letter-spacing: -0.03em; margin-bottom: 2.5rem;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}
.step-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color var(--transition);
}
.step-card:hover { border-color: var(--border-hi); }
.step-num {
  font-family: var(--font-mono); font-size: 0.75rem;
  color: var(--accent); margin-bottom: 0.75rem;
  letter-spacing: 0.08em;
}
.step-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 0.4rem; }
.step-card p { font-size: 0.875rem; color: var(--muted); line-height: 1.6; }

/* ── FAQ ── */
.faq-list { display: flex; flex-direction: column; gap: 0.75rem; }
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item:hover { border-color: var(--border-hi); }
.faq-item summary {
  list-style: none; padding: 1rem 1.25rem;
  cursor: pointer; font-size: 0.95rem; font-weight: 600;
  display: flex; align-items: center; justify-content: space-between;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; font-size: 1.3rem; color: var(--muted);
  transition: transform var(--transition), color var(--transition);
}
.faq-item[open] summary::after {
  transform: rotate(45deg); color: var(--accent);
}
.faq-item p {
  padding: 0 1.25rem 1rem;
  font-size: 0.875rem; color: var(--muted); line-height: 1.7;
}

/* ── FOOTER ── */
.footer {
  position: relative; z-index: 5;
  text-align: center;
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 0.4rem;
}
.footer p { font-size: 0.8rem; color: var(--muted); font-family: var(--font-mono); }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── RESPONSIVE ── */
@media (max-width: 600px) {
  .header { padding: 1rem 1.25rem; }
  .nav-pills a { font-size: 0.75rem; }
  .hero { padding: 4rem 1rem 2.5rem; }
  .video-meta-card { flex-direction: column; }
  .meta-thumb { width: 100%; height: 180px; }
  .quality-grid { grid-template-columns: 1fr; }
  .input-row { flex-direction: column; }
  .fetch-btn { width: 100%; justify-content: center; }
}