@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bg-primary: #0c0b1d;
  --bg-secondary: #141332;
  --bg-card: rgba(30, 27, 75, 0.6);
  --bg-card-border: rgba(139, 92, 246, 0.2);
  --accent: #d946ef;
  --accent-hover: #c026d3;
  --accent-soft: rgba(217, 70, 239, 0.15);
  --purple: #8b5cf6;
  --purple-soft: rgba(139, 92, 246, 0.15);
  --text: #e8e0f0;
  --text-muted: #9990b8;
  --success: #22d3ee;
  --error: #f43f5e;
  --border: rgba(139, 92, 246, 0.25);
}

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

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-primary);
  background: linear-gradient(160deg, #0c0b1d 0%, #1a0a2e 30%, #0f0c29 60%, #0c0b1d 100%);
  background-attachment: fixed;
  color: var(--text);
  min-height: 100vh;
}

/* ── Navigation ── */
.navbar {
  background: rgba(20, 19, 50, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.navbar .logo {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.navbar nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.navbar nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: color 0.2s;
}

.navbar nav a:hover,
.navbar nav a.active {
  color: var(--accent);
}

/* ── Container ── */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* ── Hero / Title ── */
.page-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.5rem;
  line-height: 1.4;
  letter-spacing: -0.02em;
}

.page-subtitle {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ── Beta Badge ── */
.beta-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  color: #fff;
  font-size: 0.55rem;
  font-weight: 700;
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  vertical-align: middle;
  margin-left: 0.5rem;
  letter-spacing: 0.05em;
}

/* ── Card (Glassmorphism) ── */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bg-card-border);
  border-radius: 16px;
  padding: 2rem;
  margin-bottom: 1.5rem;
}

/* ── Instructions ── */
.instructions {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bg-card-border);
  border-left: 4px solid var(--accent);
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.instructions h3 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.instructions ol {
  list-style: none;
  counter-reset: steps;
  padding: 0;
}

.instructions ol li {
  counter-increment: steps;
  margin-bottom: 0.75rem;
  padding-left: 2.2rem;
  position: relative;
  color: var(--text);
  font-size: 0.9rem;
  line-height: 1.6;
}

.instructions ol li::before {
  content: counter(steps);
  position: absolute;
  left: 0;
  top: 2px;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  color: #fff;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.instructions .warning {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  background: var(--accent-soft);
  border: 1px solid rgba(217, 70, 239, 0.2);
  border-radius: 10px;
  font-size: 0.85rem;
  color: var(--accent);
}

/* ── Upload Zone ── */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 14px;
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.3s, background 0.3s;
  position: relative;
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.upload-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.upload-zone .icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.upload-zone p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.upload-zone .filename {
  color: var(--accent);
  margin-top: 0.5rem;
  font-weight: 600;
}

/* ── Image Preview ── */
.image-preview {
  max-width: 300px;
  max-height: 300px;
  border-radius: 12px;
  margin: 1rem auto;
  display: none;
  border: 2px solid var(--border);
}

.image-preview.visible {
  display: block;
}

/* ── Form ── */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: rgba(20, 19, 50, 0.8);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-group input::placeholder {
  color: rgba(153, 144, 184, 0.5);
}

/* ── Button ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s, box-shadow 0.2s;
  width: 100%;
  box-shadow: 0 4px 20px rgba(217, 70, 239, 0.3);
}

.btn:hover {
  opacity: 0.9;
  box-shadow: 0 4px 30px rgba(217, 70, 239, 0.5);
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-secondary {
  background: rgba(20, 19, 50, 0.8);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}

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

/* ── Result Card ── */
.result {
  display: none;
  animation: fadeIn 0.4s ease;
}

.result.visible {
  display: block;
}

.result-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.result-header h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
}

.result-field {
  margin-bottom: 0.75rem;
}

.result-field .label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.result-field .value {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
}

/* ── Leaderboard Table ── */
.leaderboard-table {
  width: 100%;
  border-collapse: collapse;
}

.leaderboard-table th,
.leaderboard-table td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.leaderboard-table th {
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.leaderboard-table tr:hover td {
  background: var(--accent-soft);
}

.rank-1 { color: #fbbf24; font-weight: 700; }
.rank-2 { color: #94a3b8; font-weight: 700; }
.rank-3 { color: #d97706; font-weight: 700; }

/* ── Stats Grid ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bg-card-border);
  border-radius: 16px;
  padding: 1.5rem;
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
}

/* ── Recent Uploads Grid ── */
.uploads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.upload-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-card-border);
  border-radius: 12px;
  overflow: hidden;
}

.upload-card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
}

.upload-card .info {
  padding: 0.75rem;
}

.upload-card .coin-name {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.upload-card .uploader {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ── Loading Spinner ── */
.spinner {
  display: none;
  width: 40px;
  height: 40px;
  border: 4px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 1.5rem auto;
}

.spinner.visible {
  display: block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 1rem 1.5rem;
  border-radius: 12px;
  font-weight: 600;
  z-index: 1000;
  animation: fadeIn 0.3s ease;
  max-width: 400px;
  backdrop-filter: blur(10px);
}

.toast.success {
  background: rgba(34, 211, 238, 0.15);
  color: var(--success);
  border: 1px solid rgba(34, 211, 238, 0.3);
}

.toast.error {
  background: rgba(244, 63, 94, 0.15);
  color: var(--error);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

/* ── Admin Login ── */
.login-form {
  max-width: 400px;
  margin: 0 auto;
}

/* ── Admin Coin List ── */
.admin-coin {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border-bottom: 1px solid var(--border);
}
.admin-coin:last-child { border-bottom: none; }
.admin-coin img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 10px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
}
.admin-coin .info { flex: 1; }
.admin-coin .coin-title { font-weight: 700; font-size: 1rem; color: #fff; }
.admin-coin .coin-meta { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.25rem; }
.btn-delete {
  padding: 0.5rem 1rem;
  background: rgba(244, 63, 94, 0.15);
  color: var(--error);
  border: 1px solid rgba(244, 63, 94, 0.3);
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background 0.2s;
}
.btn-delete:hover {
  background: rgba(244, 63, 94, 0.3);
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .navbar {
    padding: 0.75rem 1rem;
  }
  .navbar .logo {
    font-size: 0.9rem;
  }
  .navbar nav {
    gap: 1rem;
  }
  .navbar nav a {
    font-size: 0.8rem;
  }
  .container {
    padding: 1.5rem 1rem;
  }
  .page-title {
    font-size: 1.2rem;
  }
  .upload-zone {
    padding: 2rem 1rem;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .admin-coin {
    flex-direction: column;
    text-align: center;
  }
}