/* papers — shared brand & layout (marketing + app) */
@import url("./papers-tokens.css");
@import url("./papers-shell.css");

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--papers-font);
  line-height: 1.55;
  color: var(--papers-ink);
  background: var(--papers-surface);
}

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

a:hover {
  text-decoration: underline;
}

code {
  font-family: var(--papers-mono);
  font-size: 0.88em;
  background: #eef2f9;
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

/* —— Brand mark —— */

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 750;
  font-size: 1.05rem;
  letter-spacing: -0.03em;
  color: var(--papers-ink);
  text-decoration: none;
}

.brand:hover {
  text-decoration: none;
}

.brand-mark {
  width: 1.65rem;
  height: 1.65rem;
  flex-shrink: 0;
}

.badge {
  display: inline-block;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.18rem 0.45rem;
  border-radius: 999px;
  vertical-align: middle;
}

.badge-app {
  background: var(--papers-accent-soft);
  color: #312e81;
}

.badge-web {
  background: #ecfdf5;
  color: #047857;
}

.badge-dev {
  background: #f1f5f9;
  color: var(--papers-muted);
}

/* —— Buttons —— */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.62rem 1.15rem;
  border-radius: var(--papers-radius-sm);
  font-weight: 650;
  font-size: 0.92rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition:
    background 0.15s ease,
    transform 0.1s ease,
    box-shadow 0.15s ease;
}

.btn:active {
  transform: scale(0.98);
}

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

.btn-primary:hover {
  background: var(--papers-accent-hover);
  text-decoration: none;
  color: #fff;
}

.btn-secondary {
  background: var(--papers-card);
  color: var(--papers-ink);
  border: 1px solid var(--papers-border);
}

.btn-secondary:hover {
  background: #f8fafc;
  text-decoration: none;
}

.btn-ghost-light {
  background: rgb(255 255 255 / 10%);
  color: #fff;
  border: 1px solid rgb(255 255 255 / 28%);
}

.btn-ghost-light:hover {
  background: rgb(255 255 255 / 16%);
  text-decoration: none;
  color: #fff;
}

.btn-hero {
  background: #fff;
  color: var(--papers-hero-from);
}

.btn-hero:hover {
  background: var(--papers-accent-soft);
  text-decoration: none;
  color: var(--papers-hero-from);
}

/* —— Marketing shell —— */

.papers-marketing {
  padding-bottom: 3rem;
}

.marketing-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgb(244 247 252 / 88%);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--papers-border);
}

.marketing-header-inner {
  max-width: var(--papers-marketing-max);
  margin: 0 auto;
  padding: 0 var(--papers-page-pad);
  min-height: var(--papers-header-h);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.marketing-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem 1rem;
  margin-left: auto;
  font-size: 0.9rem;
  font-weight: 600;
}

.marketing-nav a {
  color: var(--papers-ink-soft);
  padding: 0.35rem 0.15rem;
}

.marketing-nav a:hover {
  color: var(--papers-accent);
}

.marketing-cta {
  margin-left: 0.5rem;
}

.nav-toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.nav-burger {
  display: none;
  margin-left: auto;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--papers-border);
  border-radius: var(--papers-radius-sm);
  background: var(--papers-card);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}

.nav-burger span {
  display: block;
  width: 1rem;
  height: 2px;
  background: var(--papers-ink);
  border-radius: 1px;
  transition: transform 0.2s ease;
}

.marketing-main {
  max-width: var(--papers-marketing-max);
  margin: 0 auto;
  padding: 0 var(--papers-page-pad);
}

.hero-marketing {
  margin-top: clamp(1.25rem, 4vw, 2rem);
  padding: clamp(1.75rem, 5vw, 2.75rem) clamp(1.25rem, 4vw, 2rem);
  border-radius: var(--papers-radius-lg);
  background:
    radial-gradient(ellipse 80% 60% at 20% 0%, rgb(59 91 219 / 35%), transparent 55%),
    linear-gradient(145deg, var(--papers-hero-from) 0%, var(--papers-hero-mid) 45%, var(--papers-hero-to) 100%);
  color: #f8fafc;
  box-shadow: var(--papers-shadow-lg);
  position: relative;
  overflow: hidden;
}

.hero-marketing::after {
  content: "";
  position: absolute;
  inset: auto -20% -40% auto;
  width: min(420px, 70vw);
  height: min(420px, 70vw);
  background: radial-gradient(circle, rgb(255 255 255 / 8%) 0%, transparent 70%);
  pointer-events: none;
}

.hero-marketing h1 {
  position: relative;
  margin: 0 0 0.65rem;
  font-size: clamp(1.65rem, 5vw, 2.45rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.15;
  max-width: 18ch;
}

.hero-marketing .lead {
  position: relative;
  margin: 0;
  max-width: 38rem;
  font-size: clamp(0.95rem, 2.5vw, 1.08rem);
  opacity: 0.92;
}

.hero-marketing .en {
  position: relative;
  margin: 0.75rem 0 0;
  font-size: 0.82rem;
  opacity: 0.62;
  max-width: 36rem;
}

.hero-actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.5rem;
}

.section-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--papers-accent);
  margin-bottom: 0.35rem;
}

.section-title {
  margin: clamp(2rem, 5vw, 2.75rem) 0 0.85rem;
  font-size: clamp(1.15rem, 3vw, 1.35rem);
  font-weight: 750;
  letter-spacing: -0.02em;
}

.section-subtitle {
  margin: 1.25rem 0 0.35rem;
  font-size: var(--papers-text-lg);
  font-weight: 650;
  letter-spacing: -0.015em;
  color: var(--papers-ink-soft);
}

.card-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
}

.marketing-card {
  background: var(--papers-card);
  border: 1px solid var(--papers-border);
  border-radius: var(--papers-radius);
  padding: 1.15rem 1.25rem;
  box-shadow: var(--papers-shadow);
}

.marketing-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1rem;
  font-weight: 700;
}

.marketing-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--papers-muted);
}

.marketing-card--agent {
  border-color: rgb(59 91 219 / 28%);
  background: linear-gradient(160deg, var(--papers-accent-soft) 0%, var(--papers-card) 55%);
}

.marketing-card--agent .surface-cta {
  margin-top: 0.65rem;
  display: inline-block;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.75rem;
}

.pill {
  font-size: 0.72rem;
  font-weight: 650;
  padding: 0.22rem 0.55rem;
  border-radius: 999px;
  background: var(--papers-accent-soft);
  color: #312e81;
}

.flow-strip {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 140px), 1fr));
  margin-top: 0.5rem;
}

.flow-step {
  background: var(--papers-card);
  border: 1px solid var(--papers-border);
  border-radius: var(--papers-radius);
  padding: 0.85rem 0.95rem;
  text-align: center;
}

.flow-step .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.65rem;
  height: 1.65rem;
  border-radius: 999px;
  background: var(--papers-accent-soft);
  color: var(--papers-accent);
  font-size: 0.78rem;
  font-weight: 800;
  margin-bottom: 0.35rem;
}

.flow-step strong {
  display: block;
  font-size: 0.88rem;
  margin-bottom: 0.2rem;
}

.flow-step span {
  font-size: 0.76rem;
  color: var(--papers-muted);
}

.split-banner {
  margin-top: clamp(2rem, 5vw, 2.75rem);
  padding: clamp(1.25rem, 4vw, 1.75rem);
  border-radius: var(--papers-radius);
  background: linear-gradient(135deg, var(--papers-accent-soft) 0%, #fff 100%);
  border: 1px solid #c7d2fe;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
}

.split-banner h2 {
  margin: 0;
  font-size: clamp(1.05rem, 3vw, 1.25rem);
  flex: 1 1 12rem;
}

.split-banner p {
  margin: 0.35rem 0 0;
  font-size: 0.88rem;
  color: var(--papers-muted);
}

.surface-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr));
  margin-top: 0.75rem;
}

.surface-card {
  background: var(--papers-card);
  border: 1px solid var(--papers-border);
  border-radius: var(--papers-radius);
  padding: 1.1rem 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  box-shadow: var(--papers-shadow);
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease;
}

.surface-card:hover {
  border-color: #c7d2fe;
  box-shadow: var(--papers-shadow-lg);
}

.surface-card h3 {
  margin: 0;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.surface-card p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--papers-muted);
  flex: 1;
}

.surface-card .surface-cta {
  margin-top: 0.35rem;
}

.surface-card.surface-landing {
  border-color: #cbd5e1;
  background: linear-gradient(180deg, #f8fafc 0%, var(--papers-card) 100%);
}

.surface-card.surface-app {
  border-color: #c7d2fe;
}

.surface-card.surface-web {
  border-color: #a7f3d0;
}

.surface-card.surface-play {
  border-color: #e2e8f0;
}

.product-matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 0.75rem;
}

.product-matrix th,
.product-matrix td {
  border: 1px solid var(--papers-border);
  padding: 0.55rem 0.65rem;
  text-align: left;
}

.product-matrix th {
  background: #f8fafc;
  font-weight: 700;
}

.product-matrix-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.site-footer {
  max-width: var(--papers-marketing-max);
  margin: clamp(2.5rem, 6vw, 3.5rem) auto 0;
  padding: 1.25rem var(--papers-page-pad) 0;
  border-top: 1px solid var(--papers-border);
  font-size: 0.82rem;
  color: var(--papers-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  margin-left: auto;
}

.site-footer nav a {
  color: var(--papers-muted);
  font-weight: 600;
}

/* —— App shell (dApp) —— */

.papers-app {
  --bg: var(--papers-surface);
  --card: var(--papers-card);
  --text: var(--papers-ink);
  --muted: var(--papers-muted);
  --border: var(--papers-border);
  --accent: var(--papers-accent);
  --accent-soft: var(--papers-accent-soft);
  --radius: var(--papers-radius-sm);
  padding-bottom: 2.5rem;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgb(255 255 255 / 92%);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--papers-border);
  margin-bottom: 0;
}

.app-header-inner {
  max-width: var(--papers-content-max);
  margin: 0 auto;
  padding: 0 var(--papers-page-pad);
  min-height: var(--papers-header-h);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  position: relative;
}

.app-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.85rem;
  margin-left: auto;
  font-size: 0.86rem;
  font-weight: 600;
}

.app-nav a {
  color: var(--papers-muted);
  padding: 0.3rem 0.1rem;
}

.app-nav a:hover {
  color: var(--papers-accent);
}

.app-nav .nav-here {
  color: var(--papers-ink);
  font-weight: 700;
  padding: 0.25rem 0.55rem;
  background: var(--papers-accent-soft);
  border-radius: 999px;
  font-size: 0.8rem;
}

.app-main {
  max-width: var(--papers-content-max);
  margin: 0 auto;
  padding: 0 var(--papers-page-pad);
}

.papers-tool .app-nav .nav-here {
  background: #f1f5f9;
  color: var(--papers-ink-soft);
}

/* App responsive helpers */

@media (max-width: 720px) {
  .marketing-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem var(--papers-page-pad) 1rem;
    background: var(--papers-card);
    border-bottom: 1px solid var(--papers-border);
    box-shadow: var(--papers-shadow-lg);
  }

  .marketing-cta {
    margin-left: 0;
    width: 100%;
    text-align: center;
  }

  .nav-burger {
    display: inline-flex;
  }

  .marketing-header-inner {
    position: relative;
    flex-wrap: wrap;
  }

  .nav-toggle:checked ~ .marketing-nav {
    display: flex;
  }

  .nav-toggle:checked + .nav-burger span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .nav-toggle:checked + .nav-burger span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle:checked + .nav-burger span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .app-header-inner {
    padding-top: 0.45rem;
    padding-bottom: 0.45rem;
    flex-wrap: wrap;
  }

  .app-header-inner .nav-burger {
    display: inline-flex;
  }

  .app-header-inner .app-nav {
    display: none;
    width: 100%;
    margin-left: 0;
    padding: 0.65rem 0 0.25rem;
    border-top: 1px solid var(--papers-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
  }

  .app-header-inner .app-nav a,
  .app-header-inner .app-nav .nav-here {
    padding: 0.45rem 0.15rem;
  }

  .app-header-inner .nav-toggle:checked ~ .app-nav {
    display: flex;
  }

  .app-header-inner .nav-toggle:checked + .nav-burger span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .app-header-inner .nav-toggle:checked + .nav-burger span:nth-child(2) {
    opacity: 0;
  }

  .app-header-inner .nav-toggle:checked + .nav-burger span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .papers-app .upload-box {
    grid-template-columns: 1fr !important;
  }

  .papers-app .toolbar input[type="text"] {
    min-width: 100% !important;
    flex: 1 1 100%;
  }

  .papers-app table.mini {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .papers-app .hero h1 {
    font-size: 1.2rem !important;
  }

  .papers-app .stat {
    font-size: 1.65rem !important;
  }
}

@media (min-width: 721px) {
  .marketing-header-inner .marketing-nav {
    display: flex;
  }
}

@media (min-width: 900px) {
  .flow-strip {
    grid-template-columns: repeat(5, 1fr);
  }
}

.lang-select {
  font: inherit;
  font-size: 0.82rem;
  padding: 0.25rem 0.45rem;
  border-radius: 6px;
  border: 1px solid var(--papers-border, #cbd5e1);
  background: var(--papers-surface, #fff);
  color: var(--papers-ink-soft, #334155);
  margin-left: 0.25rem;
}

.papers-marketing .lang-select {
  border-color: rgb(255 255 255 / 22%);
  background: rgb(255 255 255 / 8%);
  color: rgb(255 255 255 / 88%);
}

/* —— Accessibility —— */

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--papers-accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0.5rem;
  z-index: 100;
  padding: 0.45rem 0.85rem;
  background: var(--papers-card);
  color: var(--papers-ink);
  border: 2px solid var(--papers-accent);
  border-radius: var(--papers-radius-sm);
  font-weight: 650;
  text-decoration: none;
}

.skip-link:focus,
.skip-link:focus-visible {
  left: 0.5rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --papers-ink: #f1f5f9;
    --papers-ink-soft: #e2e8f0;
    --papers-muted: #94a3b8;
    --papers-border: #334155;
    --papers-surface: #0f172a;
    --papers-card: #1e293b;

    --papers-accent: #6b8cff;
    --papers-accent-hover: #5a7af0;
    --papers-accent-soft: #1e2a4a;
    --papers-accent-glow: rgb(107 140 255 / 18%);

    --papers-hero-from: #020617;
    --papers-hero-mid: #0f172a;
    --papers-hero-to: #1e293b;

    --papers-shadow: 0 1px 3px rgb(0 0 0 / 35%);
    --papers-shadow-lg: 0 20px 50px rgb(0 0 0 / 45%);
  }

  code {
    background: #334155;
    color: #e2e8f0;
  }

  .app-header {
    background: rgb(15 23 42 / 92%);
  }

  .marketing-header {
    background: rgb(15 23 42 / 92%);
  }
}