:root {
  --bg: #0a0a0a;
  --surface: #111111;
  --border: #222222;
  --accent: #e8ff47;
  --accent2: #ff6b35;
  --text: #f0f0f0;
  --muted: #666666;
  --radius: 4px;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Syne', sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 60px 20px 80px;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(232,255,71,0.07) 0%, transparent 70%),
    repeating-linear-gradient(0deg, transparent, transparent 39px, rgba(255,255,255,0.02) 39px, rgba(255,255,255,0.02) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, rgba(255,255,255,0.02) 39px, rgba(255,255,255,0.02) 40px);
}

header {
  text-align: center;
  margin-bottom: 56px;
  animation: fadeDown 0.6s ease both;
}

.logo {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  font-family: 'Space Mono', monospace;
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-top: 8px;
}

.card {
  width: 100%;
  max-width: 640px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 36px;
  animation: fadeUp 0.5s ease 0.1s both;
}

.section-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.url-row {
  display: flex;
  gap: 10px;
  margin-bottom: 28px;
  position: relative;
}

input[type="text"] {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: 'Space Mono', monospace;
  font-size: 0.82rem;
  padding: 12px 42px 12px 14px;
  outline: none;
  transition: border-color 0.2s;
}
input[type="text"]:focus { border-color: var(--accent); }
input[type="text"]::placeholder { color: var(--muted); }

.url-spinner {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: none;
}
.url-spinner.active { display: block; }

.btn {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  padding: 12px 20px;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn-accent { background: var(--accent); color: #000; }
.btn-accent:hover { background: #d4eb3a; transform: translateY(-1px); }
.btn-accent:active { transform: translateY(0); }
.btn-accent:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

#info-box {
  display: none;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 24px;
  gap: 14px;
  animation: fadeUp 0.3s ease both;
}
#info-box.visible { display: flex; }

.thumb-wrap {
  flex-shrink: 0;
  width: 100px;
  height: 60px;
  border-radius: 4px;
  overflow: hidden;
  background: var(--border);
}
.thumb-wrap img { width: 100%; height: 100%; object-fit: cover; }

.info-meta { flex: 1; min-width: 0; }

.info-title {
  font-weight: 700;
  font-size: 0.9rem;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 6px;
}

.info-sub {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  color: var(--muted);
}

.format-toggle {
  display: flex;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}

.fmt-btn {
  flex: 1;
  padding: 11px;
  text-align: center;
  cursor: pointer;
  font-family: 'Syne', sans-serif;
  font-weight: 600;
  font-size: 0.82rem;
  border: none;
  background: transparent;
  color: var(--muted);
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
}
.fmt-btn.active { background: var(--accent); color: #000; }
.fmt-btn:not(.active):hover { color: var(--text); }

#format-row { margin-bottom: 28px; }

.format-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.chip {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  cursor: pointer;
  color: var(--muted);
  transition: all 0.15s;
  background: transparent;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.chip.selected { border-color: var(--accent); color: var(--accent); background: rgba(232,255,71,0.07); }
.chip:hover:not(.selected) { border-color: #444; color: var(--text); }

#progress-box { display: none; margin-bottom: 24px; }
#progress-box.visible { display: block; }

.progress-bar-bg {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  margin: 10px 0 8px;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  border-radius: 3px;
  width: 0%;
  transition: width 0.4s ease;
}

.progress-meta {
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}

#status-msg {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  padding: 10px 14px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  display: none;
}
#status-msg.error {
  background: rgba(255,80,80,0.1);
  border: 1px solid rgba(255,80,80,0.3);
  color: #ff8080;
  display: block;
}
#status-msg.success {
  background: rgba(232,255,71,0.08);
  border: 1px solid rgba(232,255,71,0.3);
  color: var(--accent);
  display: block;
}

.action-row { display: flex; gap: 10px; justify-content: flex-end; }
#download-btn-wrap { display: none; }

.spin {
  display: inline-block;
  width: 12px; height: 12px;
  border: 2px solid rgba(0,0,0,0.3);
  border-top-color: #000;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
}

@keyframes spin     { to { transform: rotate(360deg); } }
@keyframes fadeDown { from { opacity:0; transform:translateY(-20px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeUp   { from { opacity:0; transform:translateY(16px);  } to { opacity:1; transform:translateY(0); } }

footer {
  margin-top: 48px;
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: #333;
  letter-spacing: 0.1em;
  text-align: center;
  animation: fadeUp 0.5s ease 0.3s both;
}