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

:root {
  --glass: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.15);
  --glass-hover: rgba(255, 255, 255, 0.14);
  --text: #f0f0f0;
  --text-dim: rgba(255, 255, 255, 0.55);
  --accent: #7c6af0;
  --accent-hover: #9180f5;
  --danger: #e74c5e;
  --danger-hover: #ff6b7a;
  --success: #2ecc71;
  --warning: #f1c40f;
  --radius: 16px;
  --radius-sm: 10px;
}

html { font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: #0f0c29;
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

.bg-animated {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--glass);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 600;
}

.logo svg { color: var(--accent); }

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px 16px 48px;
}

h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Login */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  background: var(--glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 40px 32px;
  width: 100%;
  max-width: 380px;
  text-align: center;
}

.login-icon { color: var(--accent); margin-bottom: 16px; }

.login-card h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.login-desc {
  color: var(--text-dim);
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.login-error {
  color: var(--danger);
  font-size: 0.85rem;
  margin-bottom: 12px;
  min-height: 20px;
}

/* Inputs */
.input {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.input:focus {
  border-color: var(--accent);
}

.input::placeholder {
  color: var(--text-dim);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  background: var(--glass);
  color: var(--text);
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
  white-space: nowrap;
  min-height: 48px;
  font-family: inherit;
}

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

.btn:active { transform: scale(0.97); }

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

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

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

.btn-sm {
  padding: 8px 16px;
  min-height: 36px;
  font-size: 0.85rem;
}

.btn-block { width: 100%; }

.btn-icon {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.3rem;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}

.btn-icon:hover { color: var(--text); }

.btn-danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

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

.btn-success {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
}

/* Upload card */
.upload-card {
  background: var(--glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 32px;
}

.drop-zone {
  border: 2px dashed var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(124, 106, 240, 0.06);
}

.drop-zone svg { color: var(--text-dim); margin-bottom: 12px; }

.drop-text {
  font-size: 1.1rem;
  font-weight: 500;
  margin-bottom: 4px;
}

.drop-sub {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.file-input {
  position: fixed;
  top: -100px;
  left: -100px;
  width: 0;
  height: 0;
  opacity: 0;
}

.upload-options {
  margin-top: 20px;
  display: none;
}

.upload-options.visible { display: block; }

.file-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(255,255,255,0.05);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  font-size: 0.9rem;
  word-break: break-all;
}

.type-selector {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.type-option {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.9rem;
}

.type-option:hover { background: var(--glass-hover); }

.type-option.active {
  border-color: var(--accent);
  background: rgba(124, 106, 240, 0.12);
  color: var(--accent);
}

.upload-status {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--text-dim);
  min-height: 20px;
}

.upload-status.error { color: var(--danger); }
.upload-status.success { color: var(--success); }

/* File grid */
.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

.file-card {
  background: var(--glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px 16px 16px;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-width: 0;
}

.file-card:hover {
  background: var(--glass-hover);
  transform: translateY(-2px);
}

.file-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 10px;
  color: var(--accent);
}

.file-icon.audio-icon { color: #2ecc71; }
.file-icon.video-icon { color: #e74c5e; }
.file-icon.image-icon { color: #f1c40f; }
.file-icon.document-icon { color: #5dade2; }
.file-icon.archive-icon { color: #f39c12; }

.file-name {
  font-size: 0.85rem;
  font-weight: 500;
  word-break: break-word;
  line-height: 1.3;
  margin-bottom: 4px;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.file-size {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.file-actions {
  display: flex;
  gap: 6px;
  width: 100%;
}

.file-actions .btn {
  flex: 1;
  min-height: 36px;
  font-size: 0.8rem;
  padding: 8px 12px;
}

.file-type-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 0.65rem;
  padding: 2px 8px;
  border-radius: 20px;
  background: rgba(255,255,255,0.08);
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.file-card { position: relative; }

.file-preview {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 8px;
  background: rgba(0,0,0,0.2);
}

/* Loading */
.loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px;
  color: var(--text-dim);
}

/* Modal */
.modal {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal.hidden { display: none; }

.modal-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
}

.modal-content {
  position: relative;
  max-width: 90vw;
  max-height: 85vh;
  z-index: 1;
  border-radius: var(--radius);
  overflow: hidden;
}

.modal-content img,
.modal-content video {
  display: block;
  max-width: 100%;
  max-height: 80vh;
  border-radius: var(--radius);
}

.modal-content audio {
  display: block;
  width: 400px;
  max-width: 100%;
}

/* Admin stats */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-align: center;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

/* Admin filters */
.admin-filters {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 8px 16px;
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  background: transparent;
  color: var(--text-dim);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.filter-btn:hover { color: var(--text); background: var(--glass); }

.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Hidden */
.hidden { display: none !important; }

/* Responsive */
@media (max-width: 600px) {
  .file-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .file-card {
    padding: 14px 10px 12px;
  }

  .file-icon {
    width: 40px;
    height: 40px;
  }

  .upload-card {
    padding: 20px;
  }

  .drop-zone {
    padding: 24px 16px;
  }

  main {
    padding: 16px 12px 32px;
  }
}