/* ===== Design Tokens ===== */
:root {
  --accent: #2563eb;
  --accent-light: #dbeafe;
  --accent-muted: #93c5fd;
  --surface: #f8fafc;
  --surface-raised: #ffffff;
  --border: #e2e8f0;
  --border-subtle: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;
  --ink: #1e293b;
  --code-bg: #0c1222;
  --code-surface: #162032;
}

/* ===== Base ===== */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--accent-light);
  color: var(--accent);
}

/* ===== Reveal on Scroll ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-group > .fade-in:nth-child(1) { transition-delay: 0ms; }
.fade-in-group > .fade-in:nth-child(2) { transition-delay: 60ms; }
.fade-in-group > .fade-in:nth-child(3) { transition-delay: 120ms; }
.fade-in-group > .fade-in:nth-child(4) { transition-delay: 180ms; }
.fade-in-group > .fade-in:nth-child(5) { transition-delay: 240ms; }
.fade-in-group > .fade-in:nth-child(6) { transition-delay: 300ms; }
.fade-in-group > .fade-in:nth-child(7) { transition-delay: 360ms; }
.fade-in-group > .fade-in:nth-child(8) { transition-delay: 420ms; }
.fade-in-group > .fade-in:nth-child(9) { transition-delay: 480ms; }
.fade-in-group > .fade-in:nth-child(10) { transition-delay: 540ms; }
.fade-in-group > .fade-in:nth-child(11) { transition-delay: 600ms; }
.fade-in-group > .fade-in:nth-child(12) { transition-delay: 660ms; }

/* ===== Feature Cards ===== */
.feature-card {
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  border-color: var(--accent-muted);
  box-shadow: 0 0 0 1px var(--accent-muted);
}

.feature-card .icon-wrap {
  transition: background-color 0.2s ease;
}

.feature-card:hover .icon-wrap {
  background-color: var(--accent-light);
}

.feature-card:hover .icon-wrap svg {
  color: var(--accent);
}

/* ===== Plugin Cards ===== */
.plugin-card {
  transition: border-color 0.2s ease;
}

.plugin-card:hover {
  border-color: var(--border);
}

/* ===== Hero ===== */
.hero-grid {
  background-image:
    linear-gradient(var(--border-subtle) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 20%, transparent 100%);
}

/* ===== Flow Diagram ===== */
.flow-step {
  position: relative;
}

.flow-connector {
  color: var(--text-tertiary);
}

/* ===== Stat Items ===== */
.stat-card {
  position: relative;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 3px;
  background: var(--accent);
  border-radius: 0 0 2px 2px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.stat-card:hover::before {
  opacity: 1;
}

/* ===== Code Blocks ===== */
.code-block {
  background: var(--code-bg);
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.06);
  overflow: hidden;
}

.code-block pre {
  margin: 0;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  font-size: 0.8125rem;
  line-height: 1.75;
}

.code-block code {
  color: #cbd5e1;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

.code-header {
  background: var(--code-surface);
  padding: 0.625rem 1rem;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.code-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  opacity: 0.7;
}

/* ===== Mobile Nav ===== */
.mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
}

.mobile-menu.open {
  max-height: 20rem;
}

/* ===== Hamburger ===== */
.hamburger span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--text-secondary);
  transition: transform 0.3s ease, opacity 0.3s ease;
  margin: 5px 0;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(3px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(3px, -5px);
}

/* ===== Language Switch ===== */
.lang-switch {
  transition: background-color 0.15s ease, color 0.15s ease;
  cursor: pointer;
}

/* ===== i18n ===== */
[data-i18n] {
  transition: opacity 0.12s ease;
}

/* ===== Commands Table ===== */
#command-table-body tr {
  transition: opacity 0.15s ease;
}

/* ===== Category Badges ===== */
.category-badge {
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.category-badge[data-cat="project"] { background: #dbeafe; color: #1d4ed8; }
.category-badge[data-cat="ai"] { background: #ede9fe; color: #6d28d9; }
.category-badge[data-cat="todo"] { background: #fef3c7; color: #b45309; }
.category-badge[data-cat="bot"] { background: #d1fae5; color: #047857; }
.category-badge[data-cat="store"] { background: #fce7f3; color: #be185d; }
.category-badge[data-cat="remote"] { background: #ccfbf1; color: #0f766e; }

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* ===== Getting Started ===== */
.getting-started-bg {
  background: var(--code-bg);
}

/* ===== No Results ===== */
.no-results {
  display: none;
  text-align: center;
  padding: 3rem;
  color: var(--text-tertiary);
}

.no-results.show {
  display: block;
}

/* ===== Accent Link ===== */
.accent-link {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease;
}

.accent-link:hover {
  border-bottom-color: var(--accent);
}