@import url('tokens.css');

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--l2-font-sans);
  background-color: var(--l2-bg-canvas);
  color: var(--l2-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image:
    linear-gradient(to right, var(--l2-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--l2-grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  transition: background-color 0.25s ease, color 0.25s ease;
}

a {
  color: inherit;
  text-decoration: none;
}

.tabular {
  font-variant-numeric: tabular-nums;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
}

/* Sticky Top Bar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 200;
  background: color-mix(in srgb, var(--l2-bg-canvas) 86%, transparent);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--l2-border-subtle);
}

.topbar-inner {
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-wordmark {
  font-family: var(--l2-font-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.035em;
  font-variation-settings: 'SHRP' 100, 'CRSV' 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.brand-wordmark .lab {
  font-weight: 500;
  color: var(--l2-text-secondary);
}

.doc-badge {
  font-family: var(--l2-font-mono);
  font-size: 11px;
  font-weight: 500;
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid var(--l2-border-subtle);
  background: var(--l2-bg-surface-1);
  color: var(--l2-text-secondary);
  letter-spacing: 0.04em;
}

.topnav {
  display: flex;
  align-items: center;
  gap: 18px;
  list-style: none;
}

.topnav a {
  font-size: 13px;
  font-weight: 500;
  color: var(--l2-text-secondary);
  transition: color 0.18s ease;
}

.topnav a:hover {
  color: var(--l2-text-primary);
}

.controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.accent-switcher {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border-radius: var(--l2-radius-pill);
  background: var(--l2-bg-surface-1);
  border: 1px solid var(--l2-border-subtle);
}

.accent-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.accent-dot:hover {
  transform: scale(1.15);
}

.accent-dot.active {
  border-color: var(--l2-text-primary);
  box-shadow: 0 0 0 2px var(--l2-bg-canvas);
}

.ctrl-btn {
  font-family: var(--l2-font-mono);
  font-size: 12px;
  font-weight: 500;
  padding: 7px 12px;
  border-radius: var(--l2-radius-xs);
  border: 1px solid var(--l2-border-strong);
  background: var(--l2-bg-surface-1);
  color: var(--l2-text-primary);
  cursor: pointer;
  transition: all 0.18s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.ctrl-btn:hover {
  border-color: var(--l2-accent);
}

.ctrl-btn-primary {
  background: var(--l2-accent);
  border-color: var(--l2-accent);
  color: #FFFFFF;
}

.ctrl-btn-primary:hover {
  background: var(--l2-accent-hover);
}

/* L-Bracket Architectural Frame Mixin */
.l-frame {
  position: relative;
}

.l-frame::before,
.l-frame::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  pointer-events: none;
  transition: border-color 0.2s ease;
}

.l-frame::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--l2-accent);
  border-left: 2px solid var(--l2-accent);
}

.l-frame::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 2px solid var(--l2-accent);
  border-right: 2px solid var(--l2-accent);
}

/* Hero Cover */
.cover {
  padding: 84px 0 72px;
  border-bottom: 1px solid var(--l2-border-subtle);
}

.cover-box {
  background: var(--l2-bg-surface-1);
  border: 1px solid var(--l2-border-subtle);
  border-radius: var(--l2-radius-lg);
  padding: 56px;
  position: relative;
  overflow: hidden;
}

.meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--l2-font-mono);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--l2-accent);
  background: var(--l2-accent-soft);
  border: 1px solid var(--l2-accent-border);
  padding: 6px 12px;
  border-radius: var(--l2-radius-xs);
  margin-bottom: 24px;
}

.cover-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  gap: 48px;
  align-items: center;
}

.display-title {
  font-family: var(--l2-font-display);
  font-size: 52px;
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-variation-settings: 'SHRP' 100, 'CRSV' 0;
  margin-bottom: 22px;
}

.display-title .accent {
  color: var(--l2-accent);
}

.lead {
  font-size: 18px;
  color: var(--l2-text-secondary);
  max-width: 680px;
  line-height: 1.65;
  margin-bottom: 36px;
}

.cover-specs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding-top: 28px;
  border-top: 1px solid var(--l2-border-subtle);
}

.spec-cell .k {
  font-family: var(--l2-font-mono);
  font-size: 11px;
  color: var(--l2-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.spec-cell .v {
  font-family: var(--l2-font-display);
  font-size: 15px;
  font-weight: 600;
}

.hero-emblem-stage {
  background: var(--l2-bg-canvas);
  border: 1px solid var(--l2-border-subtle);
  border-radius: var(--l2-radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  background-image:
    radial-gradient(circle at 50% 45%, var(--l2-accent-soft), transparent 68%);
}

/* Sections */
.bb-section {
  padding: 84px 0;
  border-bottom: 1px solid var(--l2-border-subtle);
}

.sec-head {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  margin-bottom: 48px;
  align-items: start;
}

.sec-num {
  font-family: var(--l2-font-mono);
  font-size: 13px;
  color: var(--l2-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding-top: 6px;
}

.sec-title {
  font-family: var(--l2-font-display);
  font-size: 36px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  font-variation-settings: 'SHRP' 100, 'CRSV' 0;
  margin-bottom: 12px;
}

.sec-desc {
  font-size: 16px;
  color: var(--l2-text-secondary);
  max-width: 760px;
}

/* Bento Cards */
.bento-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.bento-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.bento-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.card {
  background: var(--l2-bg-surface-1);
  border: 1px solid var(--l2-border-subtle);
  border-radius: var(--l2-radius-md);
  padding: 28px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: var(--l2-border-strong);
}

.card-tag {
  font-family: var(--l2-font-mono);
  font-size: 11px;
  color: var(--l2-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
  display: block;
}

.card h3 {
  font-family: var(--l2-font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.card p {
  font-size: 14.5px;
  color: var(--l2-text-secondary);
  line-height: 1.6;
}

/* Naming Orthography Pills */
.ortho-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.pill-do, .pill-dont {
  font-family: var(--l2-font-mono);
  font-size: 13px;
  padding: 8px 14px;
  border-radius: var(--l2-radius-xs);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.pill-do {
  background: rgba(16, 185, 129, 0.10);
  border: 1px solid rgba(16, 185, 129, 0.30);
  color: var(--l2-text-primary);
}

.pill-dont {
  background: rgba(239, 68, 68, 0.09);
  border: 1px solid rgba(239, 68, 68, 0.28);
  color: var(--l2-text-secondary);
  text-decoration: line-through;
}

/* Logo Stages */
.logo-stage {
  border-radius: var(--l2-radius-md);
  padding: 44px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  border: 1px solid var(--l2-border-subtle);
  position: relative;
}

.stage-dark {
  background: #0A0B0E;
  color: #F4F3EF;
  background-image: radial-gradient(rgba(255,255,255,0.07) 1px, transparent 1px);
  background-size: 20px 20px;
}

.stage-paper {
  background: #F5F4F0;
  color: #0E1015;
  border-color: #DCDAD2;
  background-image: radial-gradient(rgba(14,16,21,0.08) 1px, transparent 1px);
  background-size: 20px 20px;
}

.stage-caption {
  position: absolute;
  bottom: 14px;
  left: 18px;
  right: 18px;
  display: flex;
  justify-content: space-between;
  font-family: var(--l2-font-mono);
  font-size: 11px;
  opacity: 0.65;
}

/* Don'ts Cards */
.dont-card {
  background: var(--l2-bg-surface-1);
  border: 1px solid rgba(239, 68, 68, 0.22);
  border-radius: var(--l2-radius-md);
  padding: 22px;
}

.dont-preview {
  height: 110px;
  background: #0A0B0E;
  border-radius: var(--l2-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  border: 1px dashed rgba(239, 68, 68, 0.28);
}

.dont-label {
  font-family: var(--l2-font-mono);
  font-size: 11px;
  color: #F87171;
  text-transform: uppercase;
  margin-bottom: 4px;
  display: block;
}

/* Color Swatches */
.swatch-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.swatch {
  background: var(--l2-bg-surface-1);
  border: 1px solid var(--l2-border-subtle);
  border-radius: var(--l2-radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.swatch:hover {
  transform: translateY(-3px);
  border-color: var(--l2-accent);
}

.swatch-color {
  height: 112px;
  padding: 14px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  font-family: var(--l2-font-mono);
  font-size: 11px;
}

.swatch-body {
  padding: 16px 18px;
}

.swatch-name {
  font-family: var(--l2-font-display);
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 4px;
}

.swatch-role {
  font-size: 12.5px;
  color: var(--l2-text-secondary);
  margin-bottom: 10px;
}

.swatch-codes {
  font-family: var(--l2-font-mono);
  font-size: 11.5px;
  color: var(--l2-text-muted);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* Typography Specimen */
.type-row {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
  padding: 26px 0;
  border-bottom: 1px solid var(--l2-border-subtle);
  align-items: baseline;
}

.type-meta {
  font-family: var(--l2-font-mono);
  font-size: 12px;
  color: var(--l2-text-muted);
  line-height: 1.7;
}

/* Live Website Prototype Frame (l2lab.ru v2.0) */
.browser-mockup {
  background: #0A0B0E;
  color: #F4F3EF;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--l2-radius-lg);
  overflow: hidden;
  box-shadow: 0 28px 64px rgba(0, 0, 0, 0.45);
}

.browser-bar {
  background: #13161D;
  padding: 12px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.browser-dots {
  display: flex;
  gap: 7px;
}

.browser-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #2C3240;
}

.browser-url {
  font-family: var(--l2-font-mono);
  font-size: 12px;
  color: #9CA3B0;
  background: #0A0B0E;
  padding: 5px 18px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.proto-body {
  padding: 40px 44px 48px;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
}

.proto-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 32px;
  margin-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.proto-hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: start;
}

.proto-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 10px;
  font-family: var(--l2-font-sans);
  font-weight: 600;
  font-size: 14.5px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.18s ease;
}

.proto-btn-accent {
  background: var(--l2-accent);
  color: #FFFFFF;
}

.proto-btn-accent:hover {
  background: var(--l2-accent-hover);
}

.proto-btn-ghost {
  background: #14171F;
  color: #F4F3EF;
  border-color: rgba(255,255,255,0.14);
}

.demo-tabs {
  display: flex;
  gap: 6px;
  background: #12151C;
  padding: 5px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 14px;
}

.demo-tab {
  flex: 1;
  font-family: var(--l2-font-mono);
  font-size: 11px;
  padding: 8px 10px;
  border-radius: 7px;
  background: transparent;
  color: #9CA3B0;
  border: none;
  cursor: pointer;
  transition: all 0.18s ease;
}

.demo-tab.active {
  background: #1D222D;
  color: #F4F3EF;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.12);
}

.agent-window {
  background: #11141B;
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 14px;
  padding: 20px;
}

.msg-bubble {
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 13.5px;
  line-height: 1.5;
  margin-bottom: 10px;
}

.msg-user {
  background: #1A1F2B;
  color: #E2E8F0;
  margin-left: 28px;
}

.msg-ai {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-left: 3px solid var(--l2-accent);
  color: #F4F3EF;
  margin-right: 16px;
}

.msg-tg {
  background: rgba(16, 185, 129, 0.10);
  border: 1px solid rgba(16, 185, 129, 0.30);
  color: #D1FAE5;
  font-size: 12.5px;
}

/* Tone of Voice Table */
.tov-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--l2-bg-surface-1);
  border: 1px solid var(--l2-border-subtle);
  border-radius: var(--l2-radius-md);
  overflow: hidden;
}

.tov-table th, .tov-table td {
  padding: 18px 22px;
  text-align: left;
  border-bottom: 1px solid var(--l2-border-subtle);
  font-size: 14px;
  vertical-align: top;
}

.tov-table th {
  font-family: var(--l2-font-mono);
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--l2-text-muted);
  background: var(--l2-bg-surface-2);
}

/* Toast Notification */
.copy-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--l2-accent);
  color: #FFFFFF;
  font-family: var(--l2-font-mono);
  font-size: 12.5px;
  padding: 10px 18px;
  border-radius: var(--l2-radius-sm);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: all 0.2s ease;
  z-index: 500;
}

.copy-toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .topnav { display: none; }
  .cover-grid, .sec-head, .bento-3, .bento-2, .bento-4, .swatch-grid, .proto-hero, .type-row {
    grid-template-columns: 1fr;
  }
  .cover-specs { grid-template-columns: repeat(2, 1fr); }
  .display-title { font-size: 36px; }
  .cover-box { padding: 28px; }
}

@media print {
  .topbar, .copy-toast { display: none !important; }
  body { background: #0A0B0E !important; color: #F4F3EF !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  .bb-section { padding: 42px 0; break-inside: avoid; }
}