:root {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-tertiary: #252833;
  --bg-hover: #2d3140;
  --text-primary: #e4e6eb;
  --text-secondary: #a0a3b1;
  --text-muted: #6b7084;
  --border-color: #2d3140;
  --accent: #5865f2;
  --accent-hover: #4752c4;
  --accent-github: #238636;
  --accent-github-hover: #2ea043;
  --accent-discord: #5865f2;
  --accent-discord-hover: #4752c4;
  --danger: #ed4245;
  --danger-hover: #c23b3e;
  --success: #23a55a;
  --warning: #f0b232;
  --toast-bg: #1e2130;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

.hidden { display: none !important; }

/* ── Login Screen ──────────────────────────── */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg-primary);
}

.login-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 48px 40px;
  text-align: center;
  max-width: 400px;
  width: 90%;
  box-shadow: var(--shadow);
}

.login-card h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

.login-subtitle {
  color: var(--text-secondary);
  margin-bottom: 32px;
  font-size: 14px;
}

/* ── Buttons ───────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  color: var(--text-primary);
  background: var(--bg-tertiary);
  transition: background 0.15s, transform 0.1s;
  line-height: 1;
}

.btn:hover { background: var(--bg-hover); }
.btn:active { transform: scale(0.98); }

.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
  gap: 6px;
}

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

.btn-discord {
  background: var(--accent-discord);
  color: #fff;
  padding: 14px 28px;
  font-size: 16px;
  border-radius: var(--radius);
  width: 100%;
  justify-content: center;
}
.btn-discord:hover { background: var(--accent-discord-hover); }

.btn-github {
  background: var(--accent-github);
  color: #fff;
}
.btn-github:hover { background: var(--accent-github-hover); }

.btn-github-connected {
  background: var(--accent-github);
  color: #fff;
}
.btn-github-connected:hover { background: var(--accent-github-hover); }

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

.btn-logout {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}
.btn-logout:hover {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

.btn-icon {
  padding: 6px 8px;
  background: transparent;
  color: var(--text-muted);
  border: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background 0.15s, color 0.15s;
}
.btn-icon:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}
.btn-icon.danger:hover {
  background: rgba(237, 66, 69, 0.15);
  color: var(--danger);
}

/* ── Header ────────────────────────────────── */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-title {
  font-size: 18px;
  font-weight: 700;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
}

.user-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
}

/* ── Main Content ──────────────────────────── */
.main-content {
  padding: 20px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

/* ── Toolbar ───────────────────────────────── */
.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

/* ── Breadcrumb ────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  font-size: 13px;
  flex-wrap: wrap;
}

.breadcrumb-item {
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.15s;
  text-decoration: none;
}
.breadcrumb-item:hover { color: var(--accent); }
.breadcrumb-item.current {
  color: var(--text-primary);
  font-weight: 500;
  cursor: default;
}
.breadcrumb-sep { color: var(--text-muted); }

/* ── File List ─────────────────────────────── */
.file-list {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  overflow: hidden;
}

.file-list-header {
  display: grid;
  grid-template-columns: 1fr 100px 160px 120px;
  padding: 10px 16px;
  background: var(--bg-tertiary);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-color);
}

.file-item {
  display: grid;
  grid-template-columns: 1fr 100px 160px 120px;
  padding: 10px 16px;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  transition: background 0.1s;
  cursor: default;
}
.file-item:last-child { border-bottom: none; }
.file-item:hover { background: var(--bg-hover); }

.file-item-name {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  overflow: hidden;
}

.file-item-name .icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.file-item-name .name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-item-name .folder-link {
  cursor: pointer;
  color: var(--text-primary);
  text-decoration: none;
}
.file-item-name .folder-link:hover { color: var(--accent); }

.file-item-size {
  font-size: 13px;
  color: var(--text-secondary);
}

.file-item-modified {
  font-size: 13px;
  color: var(--text-muted);
}

.file-item-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ── Empty State ───────────────────────────── */
.empty-state {
  padding: 48px 24px;
  text-align: center;
  color: var(--text-muted);
}

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

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
}

.modal-content {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 24px;
  width: 90%;
  max-width: 420px;
  box-shadow: var(--shadow);
  z-index: 1;
}

.modal-lg { max-width: 540px; }

.modal-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}
.input:focus { border-color: var(--accent); }
.input::placeholder { color: var(--text-muted); }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 20px;
}

/* ── Toast ─────────────────────────────────── */
.toast-container {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  padding: 12px 20px;
  background: var(--toast-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 14px;
  box-shadow: var(--shadow);
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
  max-width: 360px;
  word-break: break-word;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.info { border-left: 3px solid var(--accent); }

@keyframes toastIn {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(40px); }
}

/* ── Loading Overlay ───────────────────────── */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(15, 17, 23, 0.8);
  z-index: 3000;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-overlay p {
  margin-top: 16px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* ── Responsive ────────────────────────────── */
@media (max-width: 768px) {
  .file-list-header,
  .file-item {
    grid-template-columns: 1fr 80px 100px;
  }
  .col-modified { display: none; }
  .file-item-modified { display: none; }

  .header {
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
  }
  .header-right {
    width: 100%;
    flex-wrap: wrap;
  }
}

/* ── Dashboard ─────────────────────────────── */
.dashboard {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}