:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-code: #0d1117;
  --text-primary: #ffffff;
  --text-secondary: #e0e0e0;
  --text-muted: #8b949e;
  --accent-primary: #00dc82;
  --accent-hover: #00ff95;
  --accent-glow: rgba(0, 220, 130, 0.3);
  --border-color: #30363d;
  --warning-bg: #1a1a0a;
  --warning-border: #d4a017;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: all 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

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

h1, h2, h3 { font-weight: 600; line-height: 1.3; color: var(--text-primary); }
h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); letter-spacing: -0.02em; }
h3 { font-size: 1.15rem; }
p { margin-bottom: 1rem; color: var(--text-secondary); }
code { font-family: var(--font-mono); font-size: 0.9em; color: var(--accent-primary); }
a { color: var(--accent-primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-hover); }

::selection { background: var(--accent-primary); color: var(--bg-primary); }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* Header */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
}

.header-content {
  max-width: 900px; margin: 0 auto; padding: 1rem 1.5rem;
  display: flex; justify-content: space-between; align-items: center;
}

.logo { font-size: 1.5rem; font-weight: 700; color: var(--text-primary); }
.logo span { color: var(--accent-primary); }

.lang-switch { display: flex; gap: 0.5rem; align-items: center; }

.lang-btn {
  background: transparent; border: 1px solid var(--border-color);
  color: var(--text-muted); padding: 0.35rem 0.6rem;
  font-size: 0.8rem; font-weight: 500; border-radius: 6px;
  cursor: pointer; transition: var(--transition);
}
.lang-btn:hover { border-color: var(--accent-primary); color: var(--text-primary); }
.lang-btn.active { background: var(--accent-primary); border-color: var(--accent-primary); color: var(--bg-primary); }

/* Main */
main {
  max-width: 900px; margin: 0 auto;
  padding: 100px 1.5rem 100px;
}

/* Back link */
.back-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  color: var(--text-muted); font-size: 0.95rem;
  margin-bottom: 2rem; transition: var(--transition);
}
.back-link:hover { color: var(--accent-primary); }

/* Tool header */
.tool-header {
  display: flex; align-items: center; gap: 1.25rem;
  margin-bottom: 3rem;
}

.tool-header .tool-icon {
  width: 56px; height: 56px;
  background: var(--bg-tertiary); border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); flex-shrink: 0;
}
.tool-header .tool-icon svg { width: 32px; height: 32px; }
.tool-header h1 { margin-bottom: 0.25rem; }
.tool-subtitle { color: var(--text-muted); margin: 0; font-size: 1rem; }

/* Steps */
.step { margin-bottom: 3rem; }

.step-title {
  display: flex; align-items: center; gap: 1rem; margin-bottom: 1.25rem;
}

.step-number {
  width: 32px; height: 32px;
  background: var(--accent-primary); color: var(--bg-primary);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.95rem; flex-shrink: 0;
}

/* Code blocks */
.code-block {
  background: var(--bg-code); border: 1px solid var(--border-color);
  border-radius: 8px; margin: 1.25rem 0; overflow: hidden;
}

.code-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.75rem 1rem;
  background: var(--bg-tertiary); border-bottom: 1px solid var(--border-color);
}

.code-header span {
  font-size: 0.8rem; color: var(--text-muted);
  font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 0.05em;
}

.copy-btn {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.5rem 0.75rem; background: transparent;
  border: 1px solid var(--border-color); border-radius: 6px;
  color: var(--text-muted); font-size: 0.8rem;
  font-family: var(--font-mono); cursor: pointer; transition: var(--transition);
}
.copy-btn:hover { color: var(--text-primary); border-color: var(--accent-primary); background: var(--bg-tertiary); }
.copy-btn.copied { color: var(--accent-primary); border-color: var(--accent-primary); }

.code-block pre {
  padding: 1.25rem; overflow-x: auto; font-size: 0.9rem; line-height: 1.6;
}

.code-block code {
  color: var(--text-primary); display: block; white-space: pre;
  font-family: var(--font-mono);
}

/* Field groups */
.field-group {
  background: var(--bg-secondary); border: 1px solid var(--border-color);
  border-radius: 12px; overflow: hidden; margin: 1.25rem 0;
}

.field { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--border-color); }
.field:last-child { border-bottom: none; }

.field label {
  display: block; font-size: 0.85rem; color: var(--text-muted);
  margin-bottom: 0.5rem; font-weight: 500;
}

.field-value {
  font-family: var(--font-mono); font-size: 0.95rem;
  color: var(--text-primary); word-break: break-all;
}

.copyable {
  cursor: pointer; position: relative; transition: var(--transition);
}
.copyable:hover { color: var(--accent-primary); }
.copyable::after {
  content: 'скопировано!'; position: absolute; right: 0; top: 50%; transform: translateY(-50%);
  background: var(--accent-primary); color: var(--bg-primary);
  padding: 0.25rem 0.5rem; border-radius: 4px; font-size: 0.75rem;
  opacity: 0; transition: opacity 0.2s ease; pointer-events: none;
}
.copyable.copied::after { opacity: 1; }

/* Warning */
.warning-card {
  background: var(--warning-bg); border: 1px solid var(--warning-border);
  border-radius: 10px; padding: 1.25rem 1.5rem; margin: 1.25rem 0;
}
.warning-card p { color: var(--text-secondary); margin: 0; }
.warning-card code { color: var(--warning-border); }

/* Info card (image warning etc.) */
.info-card {
  background: var(--bg-secondary); border: 1px solid var(--border-color);
  border-radius: 10px; padding: 1.25rem 1.5rem; margin-bottom: 2rem;
}
.info-card .info-title {
  font-weight: 600; color: var(--text-primary); margin-bottom: 0.5rem;
  display: flex; align-items: center; gap: 0.5rem;
}
.info-card p { margin: 0; font-size: 0.95rem; }

/* Model grid */
.model-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem; margin-top: 1.25rem;
}

.model-card {
  background: var(--bg-secondary); border: 1px solid var(--border-color);
  border-radius: 10px; padding: 1rem 1.25rem;
  display: flex; flex-direction: column; gap: 0.5rem;
  transition: var(--transition);
}
.model-card:hover { border-color: var(--accent-primary); }

.model-name { font-size: 0.85rem; color: var(--text-muted); }

.model-alias {
  font-family: var(--font-mono); font-size: 1.1rem;
  font-weight: 600; color: var(--text-primary);
}

/* Download buttons */
.dl-btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.75rem 1.25rem;
  background: var(--bg-tertiary); border: 1px solid var(--border-color);
  border-radius: 10px; color: var(--text-primary);
  font-size: 0.95rem; font-weight: 500; font-family: var(--font-sans);
  cursor: pointer; transition: var(--transition);
}
.dl-btn svg { color: var(--accent-primary); flex-shrink: 0; }
.dl-btn:hover {
  border-color: var(--accent-primary); background: var(--bg-secondary);
  box-shadow: 0 0 12px var(--accent-glow);
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  padding: 4rem 1.5rem; text-align: center;
  color: var(--text-muted); font-size: 0.95rem;
}
footer a { color: var(--accent-primary); }
footer p { color: var(--text-muted); }

/* Responsive */
@media (max-width: 768px) {
  .model-grid { grid-template-columns: repeat(2, 1fr); }
  .tool-header { gap: 1rem; }
  .tool-header .tool-icon { width: 48px; height: 48px; }
  .tool-header .tool-icon svg { width: 28px; height: 28px; }
}

@media (max-width: 480px) {
  .model-grid { grid-template-columns: 1fr; }
}