:root {
  color-scheme: dark;
  --bg: #0b1020;
  --panel: rgba(17, 24, 39, 0.78);
  --panel-border: rgba(148, 163, 184, 0.18);
  --text: #e5eefc;
  --muted: #93a4bf;
  --brand: #6ea8fe;
  --brand-strong: #4f8ef7;
  --success: #3ecf8e;
  --danger: #ff6b81;
  --warning: #f4c95d;
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, rgba(79, 142, 247, 0.16), transparent 26%),
    radial-gradient(circle at bottom left, rgba(62, 207, 142, 0.12), transparent 24%),
    linear-gradient(180deg, #0b1020, #0a0f19 45%, #070b12);
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
.button-link {
  border: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--brand), var(--brand-strong));
  color: #fff;
  padding: 10px 16px;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease;
}

button:hover,
.button-link:hover {
  transform: translateY(-1px);
  filter: brightness(1.04);
}

button.secondary,
.button-link.secondary {
  background: rgba(148, 163, 184, 0.14);
  color: var(--text);
  border: 1px solid rgba(148, 163, 184, 0.2);
}

button.danger {
  background: rgba(255, 107, 129, 0.12);
  color: #ffd4da;
  border: 1px solid rgba(255, 107, 129, 0.3);
}

button.link-button {
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--brand);
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 12px;
  padding: 12px 14px;
  color: var(--text);
  background: rgba(9, 14, 28, 0.9);
}

textarea {
  resize: vertical;
}

label {
  display: grid;
  gap: 8px;
}

label span {
  color: var(--muted);
  font-size: 0.92rem;
}

code {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 10px;
  background: rgba(148, 163, 184, 0.1);
  color: #d7e5ff;
  word-break: break-all;
}

.page-shell {
  width: min(1400px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 36px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--warning);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(1.9rem, 3vw, 2.6rem);
}

.hero-copy {
  margin: 0;
  max-width: 780px;
  color: var(--muted);
  line-height: 1.7;
}

.hero-status {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(110, 168, 254, 0.14);
  color: #cfe2ff;
  border: 1px solid rgba(110, 168, 254, 0.25);
}

.pill.subtle {
  background: rgba(148, 163, 184, 0.1);
  color: var(--muted);
  border-color: rgba(148, 163, 184, 0.18);
}

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 22px;
  backdrop-filter: blur(18px);
}

.panel-wide {
  grid-column: span 2;
}

.panel-header {
  margin-bottom: 18px;
}

.panel-header h2 {
  margin: 0 0 8px;
  font-size: 1.25rem;
}

.panel-header p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.login-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 440px);
  gap: 18px;
  align-items: stretch;
}

.login-showcase,
.login-panel {
  min-width: 0;
}

.login-showcase {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at top right, rgba(110, 168, 254, 0.18), transparent 28%),
    radial-gradient(circle at bottom left, rgba(62, 207, 142, 0.12), transparent 26%),
    rgba(17, 24, 39, 0.88);
}

.login-showcase::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.04), transparent 30%),
    linear-gradient(180deg, transparent, rgba(110, 168, 254, 0.05));
  pointer-events: none;
}

.login-badge-row,
.login-feature-list {
  position: relative;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.login-showcase-copy,
.login-stat-grid {
  position: relative;
}

.login-showcase-copy {
  margin: 24px 0 28px;
}

.login-showcase-copy h2 {
  margin: 0 0 14px;
  font-size: clamp(2rem, 3vw, 3.1rem);
  line-height: 1.08;
}

.login-showcase-copy p {
  margin: 0;
  max-width: 700px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.login-stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}

.login-stat-card,
.login-help-item {
  display: grid;
  gap: 8px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(9, 14, 28, 0.58);
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.login-stat-card strong,
.login-help-item strong {
  font-size: 1rem;
}

.login-stat-card span,
.login-help-item span {
  color: var(--muted);
  line-height: 1.65;
}

.login-feature-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.12);
  border: 1px solid rgba(148, 163, 184, 0.16);
  color: #d8e6ff;
  font-size: 0.9rem;
}

.login-panel {
  display: grid;
  align-content: center;
}

.login-panel-header h2 {
  font-size: 2rem;
}

.login-form {
  margin-top: 10px;
}

.login-form button {
  width: 100%;
  padding: 13px 18px;
}

.login-help {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.app-grid {
  display: grid;
  grid-template-columns: minmax(320px, 380px) minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.stack {
  display: grid;
  gap: 14px;
}

.stack.compact {
  gap: 12px;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.form-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.section-stack {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.section-title {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
}

.sidebar {
  display: grid;
  gap: 18px;
  position: sticky;
  top: 18px;
}

.sidebar-section {
  display: grid;
  gap: 12px;
}

.compact-header {
  margin-bottom: 10px;
}

.compact-header p {
  margin-top: 4px;
}

.sidebar-list .card {
  padding: 14px;
}

.workspace {
  min-width: 0;
}

.workspace-stack {
  display: grid;
  gap: 18px;
}

.workspace-placeholder {
  min-height: 420px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.terminal-panel,
.tool-panel {
  min-width: 0;
}

.terminal-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
}

.terminal-viewport {
  min-height: 420px;
  max-height: 52vh;
  overflow: hidden;
  padding: 12px;
  border-radius: 18px;
  background: #050814;
  border: 1px solid rgba(148, 163, 184, 0.14);
  cursor: text;
}

.terminal-mount {
  width: 100%;
  height: 100%;
  min-height: 394px;
}

.terminal-mount .xterm {
  padding: 4px;
}

.terminal-touchbar {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.touch-key {
  min-width: 72px;
  padding: 8px 12px;
  border-radius: 10px;
}

.touch-key.active {
  background: linear-gradient(135deg, var(--brand), var(--brand-strong));
  border-color: transparent;
  color: #fff;
}

.terminal-hint-row {
  display: flex;
  gap: 12px;
  margin-top: 12px;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.terminal-hint {
  color: var(--muted);
  font-size: 0.88rem;
}

.terminal-touch-status {
  color: var(--warning);
  font-size: 0.82rem;
}

.tool-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.tab-button {
  background: rgba(148, 163, 184, 0.1);
  color: var(--text);
  border: 1px solid rgba(148, 163, 184, 0.16);
}

.tab-button.active {
  background: linear-gradient(135deg, var(--brand), var(--brand-strong));
  border-color: transparent;
}

.tool-section {
  display: grid;
  gap: 16px;
}

.list {
  display: grid;
  gap: 12px;
}

.card {
  border: 1px solid rgba(148, 163, 184, 0.14);
  border-radius: 18px;
  padding: 16px;
  background: rgba(9, 14, 28, 0.75);
}

.card-top,
.row-between {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.card-title {
  margin: 0;
  font-size: 1rem;
}

.card-subtitle {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.meta-grid strong {
  display: block;
  font-size: 0.84rem;
  color: var(--muted);
  margin-bottom: 5px;
}

.meta-grid span,
.meta-grid a {
  color: var(--text);
  text-decoration: none;
  word-break: break-word;
}

.meta-note {
  display: block;
  margin-top: 8px;
  color: var(--muted) !important;
  font-size: 0.84rem;
  line-height: 1.55;
}

.inline-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.empty-state {
  border: 1px dashed rgba(148, 163, 184, 0.22);
  border-radius: 18px;
  padding: 20px;
  color: var(--muted);
  line-height: 1.65;
  background: rgba(9, 14, 28, 0.4);
}

.toolbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.toolbar-info,
.toolbar-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.upload-form {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.upload-form input[type="file"] {
  min-width: 280px;
  flex: 1;
}

.files-table {
  display: grid;
  gap: 10px;
}

.file-row {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(120px, 0.8fr) minmax(140px, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(9, 14, 28, 0.72);
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.file-main {
  min-width: 0;
}

.file-name {
  margin: 0 0 6px;
  font-size: 0.98rem;
  word-break: break-word;
}

.file-path {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
  word-break: break-word;
}

.file-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--warning);
  box-shadow: 0 0 0 4px rgba(244, 201, 93, 0.12);
}

.status-dot.connected {
  background: var(--success);
  box-shadow: 0 0 0 4px rgba(62, 207, 142, 0.12);
}

.hidden {
  display: none !important;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  max-width: min(460px, calc(100vw - 40px));
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(9, 14, 28, 0.96);
  border: 1px solid rgba(148, 163, 184, 0.18);
  box-shadow: var(--shadow);
}

.toast.error {
  border-color: rgba(255, 107, 129, 0.45);
}

@media (max-width: 1080px) {
  .login-shell {
    grid-template-columns: 1fr;
  }

  .app-grid {
    grid-template-columns: 1fr;
  }

  .panel-wide {
    grid-column: span 1;
  }

  .sidebar {
    position: static;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100vw - 20px, 100%);
    padding-top: 18px;
  }

  .hero,
  .card-top,
  .row-between,
  .toolbar,
  .terminal-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .two-col,
  .login-stat-grid,
  .meta-grid,
  .file-row {
    grid-template-columns: 1fr;
  }

  .file-actions {
    justify-content: flex-start;
  }
}