:root {
  --bg: #0f0f0f;
  --surface: #1a1a1a;
  --surface-alt: #1e1e1e;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --text: #e5e5e5;
  --text-muted: #888;
  --border: #2a2a2a;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */

header {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--border);
}

header h1 {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
  margin-bottom: 8px;
}

.tagline {
  font-size: 1.2rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 20px;
}

.description {
  max-width: 640px;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.75;
}

.header-image {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 40px;
  border-radius: 8px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
}

/* Sections */

section {
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}

section h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 28px;
}

/* Example scores */

.examples-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (max-width: 500px) {
  .examples-grid {
    grid-template-columns: 1fr;
  }
}

.example-card {
  background: var(--surface);
  border: 1px solid #3a3a3a;
  border-radius: 8px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.example-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
}

.example-artist {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.example-card .download-btn {
  display: block;
  margin-bottom: 0;
  text-align: center;
}

/* Tabs */

.tab-group {
  background: var(--surface);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.tab-nav {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--surface-alt);
}

.tab-btn {
  padding: 12px 24px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.tab-btn:hover { color: var(--text); }

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-panel { display: none; padding: 32px; }
.tab-panel.active { display: block; }

/* Download button */

.download-btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  padding: 12px 28px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 32px;
  transition: background 0.15s;
}

.download-btn:hover { background: var(--accent-hover); }

/* Install content */

.install-content h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin: 24px 0 10px;
}

.install-content h3:first-of-type { margin-top: 0; }

.install-content ol,
.install-content ul {
  padding-left: 20px;
  margin-bottom: 16px;
  color: var(--text);
}

.install-content li { margin-bottom: 8px; }

.install-content p { margin-bottom: 12px; color: var(--text-muted); }

code {
  font-family: var(--mono);
  font-size: 0.875em;
  background: #111;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
  color: #c9d1d9;
}

/* Table */

.locations-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 0.9rem;
}

.locations-table th,
.locations-table td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}

.locations-table th {
  color: var(--text-muted);
  font-weight: 500;
  background: var(--surface-alt);
}

.locations-table td:first-child { color: var(--text-muted); white-space: nowrap; }

/* Forms */

.form-group {
  margin-bottom: 20px;
}

label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text);
}

.optional {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 0.85em;
}

input[type="text"],
input[type="email"],
select,
textarea {
  width: 100%;
  background: #111;
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.95rem;
  padding: 10px 12px;
  outline: none;
  transition: border-color 0.15s;
  appearance: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
}

textarea { resize: vertical; min-height: 120px; }

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23888' d='M0 0l6 8 6-8z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.submit-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 11px 28px;
  cursor: pointer;
  transition: background 0.15s;
}

.submit-btn:hover { background: var(--accent-hover); }


.form-error {
  margin-top: 12px;
  color: #f87171;
  font-size: 0.9rem;
}

.form-success {
  color: #4ade80;
  font-size: 1rem;
  padding: 24px 0;
}

/* Footer */

footer {
  padding: 48px 0;
  text-align: center;
  color: #555;
  font-size: 0.9rem;
  background: #e8e8e8;
}

footer img {
  display: block;
  margin: 20px auto 0;
  max-width: 200px;
  opacity: 0.85;
}