:root {
  --bg: #0a0a0c;
  --surface: #141418;
  --surface-hover: #1c1c22;
  --border: #2a2a32;
  --text: #f4f4f5;
  --text-muted: #a1a1aa;
  --accent: #e82127;
  --accent-hover: #ff3b41;
  --accent-dim: rgba(232, 33, 39, 0.15);
  --success: #22c55e;
  --radius: 12px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

.bg-glow {
  position: fixed;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 80vw;
  max-width: 900px;
  height: 50vh;
  background: radial-gradient(ellipse, var(--accent-dim) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.container {
  position: relative;
  z-index: 1;
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--accent);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  box-shadow: 0 0 40px var(--accent-dim);
}

h1 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.download-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.download-card {
  display: block;
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-decoration: none;
  color: inherit;
  transition: background 0.2s, border-color 0.2s, transform 0.15s;
}

.download-card:hover {
  background: var(--surface-hover);
  border-color: rgba(232, 33, 39, 0.4);
  transform: translateY(-2px);
}

.download-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.download-card h2 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 600;
}

.badge {
  flex-shrink: 0;
  padding: 0.2rem 0.6rem;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: var(--accent-dim);
  color: var(--accent-hover);
  border-radius: 6px;
}

.download-card p {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.download-action {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-hover);
}

.download-action svg {
  width: 1rem;
  height: 1rem;
}

footer {
  margin-top: 2.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

footer a {
  color: var(--text-muted);
  text-decoration: none;
}

footer a:hover {
  color: var(--text);
}

.empty-state {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
}

/* Admin */
.admin-page .container {
  max-width: 880px;
}

.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.admin-header h1 {
  text-align: left;
  font-size: 1.5rem;
}

.back-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
}

.back-link:hover {
  color: var(--text);
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.panel h2 {
  margin: 0 0 1rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.form-row {
  margin-bottom: 1rem;
}

.form-row label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  font: inherit;
  font-size: 0.95rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
}

.form-row textarea {
  min-height: 4rem;
  resize: vertical;
}

.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.item-editor {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
  background: var(--bg);
}

.item-editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.item-editor-header span {
  font-weight: 600;
  font-size: 0.9rem;
}

.form-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 600px) {
  .form-grid.two-col {
    grid-template-columns: 1fr 1fr;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1.2rem;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

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

.btn-secondary {
  background: var(--surface-hover);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--border);
}

.btn-danger {
  background: transparent;
  color: #f87171;
  border: 1px solid rgba(248, 113, 113, 0.4);
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
}

.btn-danger:hover {
  background: rgba(248, 113, 113, 0.1);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.login-box {
  max-width: 360px;
  margin: 4rem auto;
}

.login-box .panel {
  text-align: center;
}

.login-box h1 {
  margin-bottom: 0.25rem;
}

.login-box .subtitle {
  margin-bottom: 1.5rem;
}

.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 0.75rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
  opacity: 0;
  transition: transform 0.3s, opacity 0.3s;
  z-index: 100;
  pointer-events: none;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast.success {
  border-color: var(--success);
  color: var(--success);
}

.toast.error {
  border-color: var(--accent);
  color: var(--accent-hover);
}

.hidden {
  display: none !important;
}