/* ========================================
   基础样式 - 彭博终端风格
   ======================================== */

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-medium);
  background-color: var(--terminal-bg);
  background-image:
    radial-gradient(circle at 20% 20%, rgba(255, 191, 0, 0.08), transparent 25%),
    radial-gradient(circle at 80% 0%, rgba(79, 142, 255, 0.08), transparent 30%),
    linear-gradient(180deg, rgba(255, 191, 0, 0.015), rgba(0, 0, 0, 0.45));
  min-height: 100vh;
  overflow-x: hidden;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(transparent 95%, rgba(0, 0, 0, 0.35) 95%),
    linear-gradient(90deg, rgba(255, 191, 0, 0.035) 1px, transparent 0);
  background-size: 100% 4px, 80px 100%;
  mix-blend-mode: screen;
  opacity: 0.35;
  z-index: 1;
}

#app-root {
  isolation: isolate;
}

img {
  max-width: 100%;
  display: block;
  border-radius: var(--border-radius-md);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

a:hover {
  color: var(--color-accent-blue);
  text-decoration: none;
}

p {
  margin-bottom: var(--spacing-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-medium);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-dark);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-lg);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

ul, ol {
  margin-bottom: var(--spacing-xl);
  padding-left: var(--spacing-2xl);
}

li {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-medium);
}

strong { color: var(--color-text-dark); }

code, pre {
  font-family: var(--font-family-mono);
  color: var(--color-primary);
}

pre {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--terminal-border-muted);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  overflow-x: auto;
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--container-padding);
}

.row {
  display: grid;
  grid-template-columns: repeat(var(--grid-columns), 1fr);
  gap: var(--grid-gap);
  width: 100%;
}

.col { min-width: 0; }
.col-1 { grid-column: span 1; }
.col-2 { grid-column: span 2; }
.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; }
.col-12 { grid-column: span 12; }

@media (max-width: 991px) {
  .col-md-1 { grid-column: span 1; }
  .col-md-2 { grid-column: span 2; }
  .col-md-3 { grid-column: span 3; }
  .col-md-4 { grid-column: span 4; }
  .col-md-5 { grid-column: span 5; }
  .col-md-6 { grid-column: span 6; }
  .col-md-7 { grid-column: span 7; }
  .col-md-8 { grid-column: span 8; }
  .col-md-9 { grid-column: span 9; }
  .col-md-10 { grid-column: span 10; }
  .col-md-11 { grid-column: span 11; }
  .col-md-12 { grid-column: span 12; }
}

@media (max-width: 575px) {
  .row { gap: var(--spacing-lg); }
  .col-sm-1 { grid-column: span 1; }
  .col-sm-2 { grid-column: span 2; }
  .col-sm-3 { grid-column: span 3; }
  .col-sm-4 { grid-column: span 4; }
  .col-sm-5 { grid-column: span 5; }
  .col-sm-6 { grid-column: span 6; }
  .col-sm-7 { grid-column: span 7; }
  .col-sm-8 { grid-column: span 8; }
  .col-sm-9 { grid-column: span 9; }
  .col-sm-10 { grid-column: span 10; }
  .col-sm-11 { grid-column: span 11; }
  .col-sm-12 { grid-column: span 12; }
}

button, .btn {
  border: 1px solid var(--terminal-border);
  background: transparent;
  color: var(--color-text-dark);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: var(--spacing-sm) var(--spacing-2xl);
  cursor: pointer;
  border-radius: var(--border-radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.btn:hover,
button:hover {
  background: rgba(255, 191, 0, 0.1);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.btn-primary {
  background: linear-gradient(120deg, rgba(255, 191, 0, 0.25), rgba(255, 191, 0, 0.05));
  color: var(--color-primary);
}

.btn-outline {
  border-color: var(--terminal-border-muted);
  color: var(--color-text-medium);
}

.btn-secondary {
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue);
}

.btn-ghost {
  border-color: transparent;
  color: var(--color-text-light);
}

.btn.btn-lg { padding: var(--spacing-md) var(--spacing-3xl); font-size: var(--font-size-base); }
.btn.btn-sm { padding: var(--spacing-xs) var(--spacing-lg); font-size: var(--font-size-xs); }

.badge {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--terminal-border-muted);
  color: var(--color-primary);
}

.eyebrow {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
}

.mono { font-family: var(--font-family-mono); }

.text-amber { color: var(--color-primary); }
.text-green { color: var(--color-accent-green); }
.text-red { color: var(--color-accent-red); }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

::selection {
  background: rgba(255, 191, 0, 0.35);
  color: var(--terminal-bg);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.04);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 191, 0, 0.4);
  border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 191, 0, 0.6);
}