:root { 
  --bg: #0b0b10; 
  --card: #14141c; 
  --text: #f5f7fb; 
  --muted: #9aa3b2; 
  --accent: #4f7cff;
  --success: #10b981;
  --warning: #f59e0b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, sans-serif;
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 20px;
}

.card {
  background: var(--card);
  width: min(680px, 100%);
  padding: 32px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,.4);
}

h1 {
  margin: 0 0 16px;
  font-size: 1.8rem;
  font-weight: 700;
}

h3 {
  margin: 20px 0 10px;
  font-size: 1.2rem;
  color: var(--accent);
}

label {
  display: block;
  margin: 18px 0 8px;
  color: var(--muted);
  font-weight: 500;
}

input[type=text], 
input[type=password], 
input[type=file], 
input:not([type]) {
  width: 100%; 
  padding: 12px 16px; 
  border-radius: 12px; 
  border: 1px solid #2b2b38; 
  background: #1a1a24; 
  color: var(--text);
  font-size: 16px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79, 124, 255, 0.1);
}

button {
  margin-top: 20px; 
  padding: 12px 20px; 
  border: 0; 
  border-radius: 12px; 
  background: var(--accent); 
  color: white; 
  font-weight: 600; 
  font-size: 16px;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

button:hover {
  background: #3d63e5;
  transform: translateY(-1px);
}

button:active {
  transform: translateY(0);
}

.download-btn {
  background: var(--success);
  font-size: 18px;
  padding: 16px 24px;
  width: 100%;
}

.download-btn:hover {
  background: #059669;
}

.flash {
  margin: 16px 0; 
  padding: 12px 16px; 
  background: #21304c; 
  color: #dbe6ff; 
  border: 1px solid #365290; 
  border-radius: 12px;
  font-weight: 500;
}

.hint {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 12px;
  text-align: center;
}

.link {
  color: #9db4ff;
  text-decoration: none;
  font-weight: 500;
}

.link:hover {
  color: #b8c7ff;
  text-decoration: underline;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.stat-card {
  background: #1a1a24;
  padding: 20px;
  border-radius: 12px;
  text-align: center;
  border: 1px solid #2b2b38;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.stat-label {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
}

/* Admin Actions */
.admin-actions {
  margin: 32px 0;
  text-align: center;
}

.admin-actions p {
  margin: 16px 0;
}

/* Tips Section */
.tips {
  background: #1a1a24;
  padding: 20px;
  border-radius: 12px;
  margin-top: 24px;
  border: 1px solid #2b2b38;
}

.tips ul {
  margin: 12px 0;
  padding-left: 20px;
}

.tips li {
  margin: 8px 0;
  color: var(--muted);
}

/* Admin Info */
.admin-info {
  background: #1a1a24;
  padding: 20px;
  border-radius: 12px;
  margin-top: 24px;
  border: 1px solid #2b2b38;
}

.admin-info ul {
  margin: 12px 0;
  padding-left: 20px;
}

.admin-info li {
  margin: 8px 0;
  color: var(--muted);
}

/* Gallery Specific */
.gallery-link, .upload-link {
  text-align: center;
  margin: 20px 0;
}

.empty-gallery {
  text-align: center;
  padding: 40px 20px;
  color: var(--muted);
}

.empty-gallery h3 {
  color: var(--text);
}

.gallery-footer {
  margin-top: 32px;
  text-align: center;
}

/* Mobile Responsiveness */
@media (max-width: 480px) {
  body {
    padding: 10px;
  }
  
  .card {
    padding: 24px;
  }
  
  h1 {
    font-size: 1.5rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .stat-number {
    font-size: 1.5rem;
  }
}