:root {
  --bg: #0b1020;
  --panel: rgba(17, 24, 39, 0.88);
  --panel-border: rgba(255, 255, 255, 0.08);
  --text: #eef2ff;
  --muted: #a7b0c5;
  --accent: #7c9cff;
  --accent-2: #55d6be;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --radius: 22px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(124, 156, 255, 0.12), transparent 35%),
    radial-gradient(circle at bottom right, rgba(85, 214, 190, 0.10), transparent 30%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.auth-body {
  display: grid;
  place-items: center;
  padding: 20px;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 30px;
}

.auth-card h1 {
  margin-top: 0;
  margin-bottom: 10px;
}

.muted {
  color: var(--muted);
}

.flash-error {
  background: rgba(255, 80, 80, 0.12);
  border: 1px solid rgba(255, 80, 80, 0.25);
  padding: 12px;
  border-radius: 14px;
  margin: 16px 0;
}

.auth-form {
  display: grid;
  gap: 10px;
  margin-top: 20px;
}

.auth-form label {
  font-size: 0.92rem;
  color: var(--muted);
}

.auth-form input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.12);
  background: rgba(255,255,255,0.05);
  color: white;
}

.auth-form button,
.logout-btn {
  margin-top: 12px;
  border: 0;
  border-radius: 14px;
  padding: 12px 18px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent), #5f86ff);
  color: white;
  text-decoration: none;
  display: inline-block;
  cursor: pointer;
}

.topbar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 28px 20px 10px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: start;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

.topbar h1 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 3rem);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 0.18s ease;
}

.card:hover {
  transform: translateY(-3px);
}

.card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  background: rgba(255,255,255,0.04);
}

.card-body {
  padding: 14px;
}

.card-title {
  margin: 0 0 8px;
  font-size: 0.95rem;
  word-break: break-word;
}

.card-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.empty-state {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.88);
  display: grid;
  place-items: center;
  padding: 30px;
  z-index: 1000;
}

.hidden {
  display: none !important;
}

.lightbox img {
  max-width: min(95vw, 1200px);
  max-height: 90vh;
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.close-btn {
  position: fixed;
  top: 18px;
  right: 18px;
  border: 0;
  border-radius: 12px;
  width: 48px;
  height: 48px;
  font-size: 28px;
  background: rgba(255,255,255,0.12);
  color: white;
  cursor: pointer;
}

@media (max-width: 980px) {
  .gallery-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .topbar {
    flex-direction: column;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
  }
}