:root {
  --bg-main: #0e1117;
  --bg-card: #161b22;
  --bg-card-hover: #1f242c;
  --bg-input: #0d1117;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(255, 209, 102, 0.4);
  --text-main: #f0f6fc;
  --text-muted: #8b949e;
  --accent: #ffd166;
  --accent-glow: rgba(255, 209, 102, 0.15);
  --accent-hover: #ffe08a;
  --danger: #f85149;
  --danger-bg: rgba(248, 81, 73, 0.1);
  --success: #3fb950;
  --success-bg: rgba(63, 185, 80, 0.1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 24px 16px;
  line-height: 1.5;
}

.mono {
  font-family: "JetBrains Mono", Consolas, "Courier New", monospace;
}

/* Container */
.container {
  width: 100%;
  max-width: 820px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.02);
  overflow: hidden;
  animation: fadeIn 0.3s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Header */
.portal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255, 255, 255, 0.015);
}

.portal-title-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.badge-portal {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  background: var(--accent-glow);
  color: var(--accent);
  border: 1px solid rgba(255, 209, 102, 0.25);
  padding: 4px 10px;
  border-radius: 20px;
}

.portal-title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.5px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 13px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Login View */
.login-card {
  max-width: 400px;
  padding: 32px 28px;
  margin: 0 auto;
}

.login-header {
  text-align: center;
  margin-bottom: 24px;
}

.login-header .lock-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 12px;
  background: var(--accent-glow);
  border: 1px solid rgba(255, 209, 102, 0.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.login-header h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.login-header p {
  font-size: 13px;
  color: var(--text-muted);
}

.form-group {
  margin-bottom: 18px;
}

.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.input-field {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  color: var(--text-main);
  font-size: 14px;
  outline: none;
  transition: all 0.2s ease;
}

.input-field:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(255, 209, 102, 0.1);
}

.btn-toggle-pwd {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
}

.btn-toggle-pwd:hover {
  color: var(--text-main);
}

.btn-primary {
  width: 100%;
  background: var(--accent);
  color: #121212;
  border: none;
  border-radius: var(--radius-md);
  padding: 12px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Alert Notification */
.alert {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-top: 14px;
  display: none;
}

.alert-danger {
  background: var(--danger-bg);
  border: 1px solid rgba(248, 81, 73, 0.25);
  color: var(--danger);
}

.alert-success {
  background: var(--success-bg);
  border: 1px solid rgba(63, 185, 80, 0.25);
  color: var(--success);
}

/* File Portal Content */
.portal-content {
  padding: 20px 24px;
}

.search-bar {
  margin-bottom: 20px;
}

.search-bar input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: var(--text-main);
  font-size: 13px;
  outline: none;
}

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

/* Table */
.table-wrap {
  width: 100%;
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th {
  text-align: left;
  padding: 12px 14px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  vertical-align: middle;
}

tr:last-child td {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--bg-card-hover);
}

.section-row td {
  background: rgba(255, 255, 255, 0.02);
  padding: 10px 14px;
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--accent);
}

.file-name-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.file-icon {
  color: var(--accent);
  flex-shrink: 0;
}

.file-desc-cell {
  color: var(--text-muted);
}

.file-size-cell,
.file-date-cell {
  color: #a0aec0;
  font-size: 12px;
  white-space: nowrap;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(88, 166, 255, 0.12);
  color: #58a6ff;
  border: 1px solid rgba(88, 166, 255, 0.25);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-download:hover {
  background: rgba(88, 166, 255, 0.22);
  border-color: #58a6ff;
  color: #79b8ff;
}

/* Spinner */
.spinner {
  border: 2px solid rgba(0, 0, 0, 0.2);
  border-top-color: #121212;
  border-radius: 50%;
  width: 16px;
  height: 16px;
  animation: spin 0.6s linear infinite;
}

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

/* Responsive */
@media (max-width: 680px) {
  body {
    padding: 12px;
  }

  .portal-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .header-actions {
    width: 100%;
    justify-content: flex-end;
  }

  table thead {
    display: none;
  }

  table, tbody, tr, td {
    display: block;
    width: 100%;
  }

  tbody tr {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
  }

  td {
    padding: 4px 0;
  }

  .file-name-cell {
    margin-bottom: 6px;
  }

  .file-size-cell::before {
    content: "Size: ";
    color: var(--text-muted);
  }

  .file-date-cell::before {
    content: "Modified: ";
    color: var(--text-muted);
  }

  .download-action-cell {
    margin-top: 10px;
  }

  .btn-download {
    width: 100%;
    justify-content: center;
  }
}