:root {
  --bg-color: #0f111a;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --accent: #6c5ce7;
  --accent-hover: #a29bfe;
  --text-main: #ffffff;
  --text-muted: #a0aabf;
  --danger: #ff7675;
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  background-image: 
    radial-gradient(at 0% 0%, rgba(108, 92, 231, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(0, 210, 211, 0.1) 0px, transparent 50%);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem;
}

.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 2.5rem;
  width: 100%;
  max-width: 800px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.6s ease-out;
  position: relative;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

header {
  text-align: center;
  margin-bottom: 2rem;
  position: relative;
}

h1 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.025em;
}

h1 i {
  color: var(--accent);
}

.subtitle {
  color: var(--text-muted);
  font-size: 1rem;
}

.btn-admin {
  position: absolute;
  top: -10px;
  right: -10px;
  border: none;
  color: var(--glass-border);
  font-size: 1.25rem;
}
.btn-admin:hover, .btn-admin.unlocked {
  color: var(--accent);
  background: transparent;
}

.hidden {
  display: none !important;
}

.upload-zone {
  border: 2px dashed var(--glass-border);
  border-radius: 16px;
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  background: rgba(0,0,0,0.2);
  margin-bottom: 2.5rem;
}

.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--accent);
  background: rgba(108, 92, 231, 0.1);
  transform: translateY(-2px);
}

.upload-icon {
  font-size: 3rem;
  color: var(--accent);
  margin-bottom: 1rem;
  transition: transform 0.3s ease;
}

.upload-zone:hover .upload-icon {
  transform: translateY(-5px);
}

.upload-content p {
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.subtext {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.files-container h2 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--text-muted);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.file-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 400px;
  overflow-y: auto;
  padding-right: 0.5rem;
}

.file-list::-webkit-scrollbar {
  width: 6px;
}
.file-list::-webkit-scrollbar-track {
  background: rgba(0,0,0,0.1);
  border-radius: 4px;
}
.file-list::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 4px;
}

.file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--glass-border);
  padding: 1rem 1.25rem;
  border-radius: 12px;
  transition: all 0.2s ease;
}

.file-item:hover {
  background: rgba(255, 255, 255, 0.06);
  transform: translateX(4px);
}

.file-info {
  display: flex;
  align-items: center;
  gap: 1rem;
  overflow: hidden;
}

.file-icon {
  color: var(--accent);
  font-size: 1.25rem;
}

.file-details {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.file-name {
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 300px;
}

.file-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.file-actions {
  display: flex;
  gap: 0.5rem;
}

.btn {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 0.5rem;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
}

.btn:hover {
  background: rgba(255,255,255,0.1);
}

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

.btn-delete {
  display: none;
}
.admin-mode .btn-delete {
  display: flex;
}

.btn-delete:hover {
  color: var(--danger);
  border-color: var(--danger);
  background: rgba(255, 118, 117, 0.1);
}

.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--accent);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  font-weight: 500;
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  box-shadow: 0 10px 20px -5px rgba(108, 92, 231, 0.5);
  z-index: 1000;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  backdrop-filter: blur(5px);
  animation: fadeIn 0.3s ease-out;
}

.modal-content {
  max-width: 400px;
  padding: 2rem;
}

.modal-content h2 {
  margin-bottom: 1.5rem;
  text-align: center;
}

.input-group input {
  width: 100%;
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: rgba(0, 0, 0, 0.2);
  color: white;
  font-family: inherit;
  font-size: 1rem;
  margin-bottom: 1.5rem;
  outline: none;
  transition: border-color 0.3s ease;
}

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

.modal-actions {
  display: flex;
  gap: 1rem;
}

.btn-primary, .btn-secondary {
  flex: 1;
  width: auto;
  padding: 0.75rem;
}

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