:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface2: #1c2128;
  --border: #30363d;
  --accent: #10b981;
  --accent2: #059669;
  --accent-dim: rgba(16,185,129,0.12);
  --success: #3fb950;
  --danger: #f85149;
  --warning: #d29922;
  --text: #e6edf3;
  --text-muted: #7d8590;
  --radius: 10px;
  --radius-sm: 7px;
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.7);
  --glow: 0 0 24px rgba(16,185,129,0.25);
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, sans-serif;
  min-height: 100vh;
  line-height: 1.5;
}

/* ─── Login Page ─── */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(16,185,129,0.08) 0%, transparent 55%),
    radial-gradient(ellipse at 80% 70%, rgba(5,150,105,0.06) 0%, transparent 55%),
    var(--bg);
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 44px 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
  animation: fadeUp 0.35s ease;
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
}

.login-logo .icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  box-shadow: var(--glow);
}

.login-logo .icon svg { width: 26px; height: 26px; fill: #0d1117; }
.login-logo h1 { font-size: 1.4rem; font-weight: 700; letter-spacing: -0.4px; color: var(--text); }
.login-logo p { color: var(--text-muted); font-size: 0.85rem; margin-top: 4px; }

.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.7px;
  margin-bottom: 7px;
}

.input-wrap { position: relative; }
.input-wrap svg {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  width: 15px;
  height: 15px;
  color: var(--text-muted);
}

.input-wrap input {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
  padding: 11px 12px 11px 38px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input-wrap input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(16,185,129,0.12);
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #0d1117;
  width: 100%;
  padding: 13px;
  font-size: 0.95rem;
  margin-top: 8px;
  box-shadow: 0 2px 10px rgba(16,185,129,0.25);
}

.btn-primary:hover { background: #34d399; box-shadow: 0 4px 16px rgba(16,185,129,0.35); transform: translateY(-1px); }
.btn-primary:active { transform: translateY(0); }

.btn-sm { padding: 6px 11px; font-size: 0.78rem; }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--surface2); color: var(--text); border-color: #484f58; }

.btn-danger {
  background: rgba(248,81,73,0.12);
  color: var(--danger);
  border: 1px solid rgba(248,81,73,0.25);
}
.btn-danger:hover { background: rgba(248,81,73,0.22); }

.btn-success {
  background: rgba(63,185,80,0.12);
  color: var(--success);
  border: 1px solid rgba(63,185,80,0.25);
}
.btn-success:hover { background: rgba(63,185,80,0.22); }

.btn-accent {
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(16,185,129,0.25);
}
.btn-accent:hover { background: rgba(16,185,129,0.2); }

.error-msg { color: var(--danger); font-size: 0.83rem; margin-top: 10px; text-align: center; display: none; }
.error-msg.show { display: block; }

/* ─── Dashboard Layout ─── */
.app { display: flex; min-height: 100vh; }

.sidebar {
  width: 252px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
}

.sidebar-logo {
  padding: 22px 18px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 11px;
}

.sidebar-logo .icon {
  width: 36px;
  height: 36px;
  background: var(--accent);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 12px rgba(16,185,129,0.3);
  flex-shrink: 0;
}

.sidebar-logo .icon svg { width: 18px; height: 18px; fill: #0d1117; }
.sidebar-logo h2 { font-size: 0.95rem; font-weight: 700; color: var(--text); }
.sidebar-logo span { font-size: 0.68rem; color: var(--text-muted); display: block; }

.nav { padding: 14px 10px; flex: 1; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 11px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.845rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: all 0.15s;
  margin-bottom: 1px;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.nav-item:hover { background: var(--surface2); color: var(--text); }
.nav-item.active {
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(16,185,129,0.15);
}
.nav-item svg { width: 16px; height: 16px; flex-shrink: 0; }

.nav-badge {
  margin-left: auto;
  background: var(--accent);
  color: #0d1117;
  font-size: 0.68rem;
  padding: 1px 6px;
  border-radius: 99px;
  font-weight: 700;
}

.sidebar-footer {
  padding: 14px 10px;
  border-top: 1px solid var(--border);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 11px;
  border-radius: var(--radius-sm);
  background: var(--surface2);
  border: 1px solid var(--border);
}

.user-avatar {
  width: 30px;
  height: 30px;
  background: var(--accent);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: #0d1117;
  flex-shrink: 0;
}

.user-name { font-size: 0.845rem; font-weight: 600; }
.user-role { font-size: 0.72rem; color: var(--text-muted); }
.btn-logout { margin-top: 8px; width: 100%; }

/* ─── Main Content ─── */
.main { margin-left: 252px; flex: 1; min-height: 100vh; }

.header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}

.header h2 { font-size: 1.05rem; font-weight: 700; }
.header p { font-size: 0.775rem; color: var(--text-muted); }

.content { padding: 28px; }

/* ─── Sections ─── */
.section { display: none; }
.section.active { display: block; }

/* ─── Stats Cards ─── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.stat-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon.purple { background: var(--accent-dim); color: var(--accent); }
.stat-icon.green  { background: rgba(63,185,80,0.12); color: var(--success); }
.stat-icon.orange { background: rgba(210,153,34,0.12); color: var(--warning); }
.stat-icon.red    { background: rgba(248,81,73,0.12); color: var(--danger); }
.stat-icon svg { width: 20px; height: 20px; }

.stat-val { font-size: 1.4rem; font-weight: 700; }
.stat-label { font-size: 0.72rem; color: var(--text-muted); font-weight: 500; }

/* ─── Cards ─── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 22px;
}

.card-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 9px;
}

.card-title svg { width: 18px; height: 18px; color: var(--accent); }

/* ─── Upload Zone ─── */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 44px 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  background: var(--surface2);
  margin-bottom: 18px;
}

.drop-zone:hover, .drop-zone.dragover {
  border-color: var(--accent);
  background: rgba(16,185,129,0.04);
}

.drop-zone svg { width: 44px; height: 44px; color: var(--text-muted); margin-bottom: 14px; }
.drop-zone h3 { font-size: 0.95rem; margin-bottom: 6px; }
.drop-zone p { color: var(--text-muted); font-size: 0.845rem; }

/* ─── Transfer List ─── */
.transfer-item {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  margin-bottom: 10px;
  animation: fadeIn 0.25s ease;
}

.transfer-header {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 11px;
}

.file-icon {
  width: 34px;
  height: 34px;
  border-radius: 7px;
  background: var(--accent-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(16,185,129,0.15);
}

.file-icon svg { width: 16px; height: 16px; color: var(--accent); }

.transfer-info { flex: 1; min-width: 0; }
.transfer-name { font-size: 0.875rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.transfer-meta { font-size: 0.72rem; color: var(--text-muted); margin-top: 2px; }
.transfer-actions { display: flex; gap: 5px; flex-shrink: 0; }

.progress-bar {
  height: 5px;
  background: var(--surface);
  border-radius: 99px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
  border-radius: 99px;
  transition: width 0.4s ease;
}

.progress-fill.success { background: var(--success); }
.progress-fill.danger  { background: var(--danger); }

/* ─── File Table ─── */
.file-table { width: 100%; border-collapse: collapse; font-size: 0.845rem; }
.file-table th {
  text-align: left;
  padding: 10px 14px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
}
.file-table td { padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.file-table tr:last-child td { border-bottom: none; }
.file-table tr:hover td { background: rgba(255,255,255,0.015); }

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 600;
}

.status-badge.completed  { background: rgba(63,185,80,0.12);  color: var(--success); }
.status-badge.in_progress{ background: var(--accent-dim);      color: var(--accent); }
.status-badge.paused     { background: rgba(210,153,34,0.12); color: var(--warning); }
.status-badge.failed     { background: rgba(248,81,73,0.12);  color: var(--danger); }
.status-badge.cancelled  { background: rgba(125,133,144,0.12);color: var(--text-muted); }
.status-badge.pending    { background: rgba(210,153,34,0.10); color: var(--warning); }

.pulse { animation: pulse 1.5s infinite; }

/* ─── URL Downloader ─── */
.url-input-row {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.url-input-row input {
  flex: 1;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.875rem;
  padding: 11px 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.url-input-row input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(16,185,129,0.12);
}

/* ─── Modal ─── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(6px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.modal-overlay.show { opacity: 1; pointer-events: all; }

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  width: 100%;
  max-width: 460px;
  box-shadow: var(--shadow-lg);
  transform: scale(0.96);
  transition: transform 0.2s;
}

.modal-overlay.show .modal { transform: scale(1); }
.modal h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 14px; }

.share-link-wrap {
  display: flex;
  gap: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  align-items: center;
  margin-bottom: 14px;
}

.share-link-wrap input {
  flex: 1;
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.8rem;
  outline: none;
  font-family: 'SF Mono', 'Consolas', monospace;
}

/* ─── Toast ─── */
.toast-wrap {
  position: fixed;
  bottom: 22px;
  right: 22px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.toast {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-size: 0.845rem;
  box-shadow: var(--shadow);
  animation: fadeUp 0.25s ease;
  max-width: 300px;
  display: flex;
  align-items: center;
  gap: 9px;
}

.toast.success { border-color: rgba(63,185,80,0.35); }
.toast.error   { border-color: rgba(248,81,73,0.35); }
.toast svg { width: 15px; height: 15px; flex-shrink: 0; }
.toast.success svg { color: var(--success); }
.toast.error svg   { color: var(--danger); }

/* ─── Empty State ─── */
.empty-state {
  text-align: center;
  padding: 44px 24px;
  color: var(--text-muted);
}

.empty-state svg { width: 44px; height: 44px; margin-bottom: 14px; opacity: 0.3; }
.empty-state h3 { font-size: 0.9rem; color: var(--text); margin-bottom: 6px; }
.empty-state p { font-size: 0.82rem; }

/* ─── Animations ─── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.45; }
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .content { padding: 14px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .url-input-row { flex-direction: column; }
  .file-table { font-size: 0.78rem; }
}

/* ─── Share Page ─── */
.share-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background:
    radial-gradient(ellipse at center, rgba(16,185,129,0.06) 0%, transparent 65%),
    var(--bg);
}

.share-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 460px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  animation: fadeUp 0.35s ease;
}

.share-file-icon {
  width: 68px;
  height: 68px;
  background: var(--accent-dim);
  border: 1px solid rgba(16,185,129,0.2);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 22px;
}

.share-file-icon svg { width: 32px; height: 32px; color: var(--accent); }
.share-card h1 { font-size: 1.2rem; font-weight: 700; margin-bottom: 6px; word-break: break-all; }
.share-meta { display: flex; justify-content: center; gap: 24px; margin: 20px 0; flex-wrap: wrap; }
.share-meta-item { text-align: center; }
.share-meta-item .val { font-weight: 700; font-size: 0.95rem; }
.share-meta-item .lbl { font-size: 0.72rem; color: var(--text-muted); margin-top: 2px; }

.download-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  width: 100%;
  padding: 14px;
  background: var(--accent);
  color: #0d1117;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
  box-shadow: 0 4px 14px rgba(16,185,129,0.3);
  margin-top: 22px;
}

.download-btn:hover { background: #34d399; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(16,185,129,0.4); }
.download-btn svg { width: 18px; height: 18px; }

.expiry-note { font-size: 0.78rem; color: var(--text-muted); margin-top: 14px; }

/* ─── Server Stats Panel ─── */
.server-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

.server-stat {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}

.server-stat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.server-stat-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.server-stat-val {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.server-bar {
  height: 6px;
  background: var(--surface);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 7px;
}

.server-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
  border-radius: 99px;
  transition: width 0.6s ease;
}

.server-bar-fill.warn  { background: linear-gradient(90deg, #ca8a04, var(--warning)); }
.server-bar-fill.danger{ background: linear-gradient(90deg, #dc2626, var(--danger)); }

.server-stat-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.net-stat-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.net-arrow {
  font-size: 1.2rem;
  font-weight: 700;
  flex-shrink: 0;
}

.net-rx .net-arrow { color: var(--accent); }
.net-tx .net-arrow { color: var(--warning); }

.net-rate {
  font-size: 0.9rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.net-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 1px;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent2); }

/* ─── Code/mono text ─── */
code, .mono {
  font-family: 'SF Mono', 'Consolas', 'Liberation Mono', monospace;
  font-size: 0.8em;
  background: var(--surface2);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--accent);
}