:root {
  --bg: #0f0f23;
  --surface: #1a1a2e;
  --accent: #6c63ff;
  --accent-hover: #5a52e0;
  --text: #e0e0e0;
  --text-muted: #888;
  --border: #2a2a4a;
  --success: #4caf50;
  --danger: #ef5350;
  --radius: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 0;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

header h1 {
  font-size: 1.5rem;
  background: linear-gradient(135deg, var(--accent), #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

header nav a {
  margin-left: 16px;
  color: var(--text-muted);
  font-size: 0.9rem;
}
header nav a:hover { color: var(--text); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}

/* Login */
.login-overlay {
  position: fixed; inset: 0;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
}

.login-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 90%; max-width: 360px;
  text-align: center;
}

.login-box h2 { margin-bottom: 20px; }

.login-box input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 16px;
  outline: none;
}
.login-box input:focus { border-color: var(--accent); }

.btn {
  display: inline-block;
  padding: 10px 24px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.2s;
}
.btn:hover { background: var(--accent-hover); }
.btn-danger { background: var(--danger); }
.btn-danger:hover { background: #d32f2f; }
.btn-sm { padding: 6px 14px; font-size: 0.85rem; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Upload zone */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 48px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(108, 99, 255, 0.05);
}
.upload-zone .icon { font-size: 3rem; margin-bottom: 12px; }
.upload-zone p { color: var(--text-muted); margin-top: 8px; font-size: 0.9rem; }

/* Results */
.result-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}

.result-item .preview {
  width: 100%;
  max-height: 200px;
  object-fit: contain;
  border-radius: 8px;
  margin-bottom: 12px;
  background: var(--bg);
}

.link-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.link-row label {
  min-width: 80px;
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.link-row input {
  flex: 1;
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.85rem;
  outline: none;
}

.link-row button {
  padding: 8px 12px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  white-space: nowrap;
}
.link-row button:hover { background: var(--accent-hover); }
.link-row button.copied { background: var(--success); }

/* Admin grid */
.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
}

.image-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
}

.image-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  display: block;
}

.image-card .info {
  padding: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.image-card .actions {
  padding: 0 10px 10px;
  display: flex;
  gap: 8px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--success);
  color: #fff;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 0.9rem;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.3s;
  z-index: 2000;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* Responsive */
@media (max-width: 600px) {
  .container { padding: 12px; }
  header h1 { font-size: 1.2rem; }
  .upload-zone { padding: 32px 16px; }
  .link-row { flex-wrap: wrap; }
  .link-row label { min-width: 100%; }
  .image-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
}

/* Loading spinner */
.spinner {
  display: inline-block;
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state {
  text-align: center;
  padding: 48px;
  color: var(--text-muted);
}