/* Signal Grid — Cod3Uchiha branch-only UI redesign.
   Content and behavior stay in the existing HTML/JavaScript contracts. */

:root {
  --bg: #f3f6fa;
  --bg-raised: #ffffff;
  --bg-soft: #e8eef5;
  --bg-inverse: #0a1019;
  --surface: rgba(255, 255, 255, .82);
  --surface-solid: #ffffff;
  --surface-2: #edf2f7;
  --surface-3: #e3eaf2;
  --text: #243143;
  --text-strong: #07111f;
  --muted: #64748b;
  --muted-2: #8a98a9;
  --border: rgba(19, 41, 66, .14);
  --border-strong: rgba(19, 41, 66, .24);
  --accent: #12b76a;
  --accent-bright: #3ee58f;
  --accent-ink: #032d1a;
  --blue: #377dff;
  --purple: #7657f3;
  --orange: #ee8d36;
  --danger: #e35c68;
  --shadow-sm: 0 10px 28px rgba(25, 52, 80, .08);
  --shadow-lg: 0 30px 80px rgba(25, 52, 80, .13);
  --radius-sm: 12px;
  --radius: 20px;
  --radius-lg: 30px;
  --container: 1160px;
  --header-height: 76px;
  --signal-grid: rgba(33, 69, 104, .055);
  --signal-line: rgba(33, 69, 104, .11);
  --ease-out: cubic-bezier(.23, 1, .32, 1);
}

:root[data-theme="dark"],
:root:not([data-theme="light"]) {
  --bg: #09111c;
  --bg-raised: #0e1825;
  --bg-soft: #101c2a;
  --bg-inverse: #f6fbff;
  --surface: rgba(14, 24, 37, .84);
  --surface-solid: #101b29;
  --surface-2: #142235;
  --surface-3: #1a2b40;
  --text: #cad5e2;
  --text-strong: #f7fbff;
  --muted: #8c9bad;
  --muted-2: #64778d;
  --border: rgba(205, 225, 245, .13);
  --border-strong: rgba(205, 225, 245, .24);
  --accent: #42e695;
  --accent-bright: #75f5b3;
  --accent-ink: #062c1a;
  --blue: #74a4ff;
  --purple: #a18cff;
  --orange: #ffb46f;
  --danger: #ff7883;
  --shadow-sm: 0 14px 36px rgba(0, 0, 0, .22);
  --shadow-lg: 0 32px 90px rgba(0, 0, 0, .4);
  --signal-grid: rgba(196, 220, 243, .045);
  --signal-line: rgba(196, 220, 243, .095);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #f3f6fa;
    --bg-raised: #ffffff;
    --bg-soft: #e8eef5;
    --bg-inverse: #0a1019;
    --surface: rgba(255, 255, 255, .82);
    --surface-solid: #ffffff;
    --surface-2: #edf2f7;
    --surface-3: #e3eaf2;
    --text: #243143;
    --text-strong: #07111f;
    --muted: #64748b;
    --muted-2: #8a98a9;
    --border: rgba(19, 41, 66, .14);
    --border-strong: rgba(19, 41, 66, .24);
    --accent: #12b76a;
    --accent-bright: #3ee58f;
    --accent-ink: #032d1a;
    --blue: #377dff;
    --purple: #7657f3;
    --orange: #ee8d36;
    --danger: #e35c68;
    --shadow-sm: 0 10px 28px rgba(25, 52, 80, .08);
    --shadow-lg: 0 30px 80px rgba(25, 52, 80, .13);
    --signal-grid: rgba(33, 69, 104, .055);
    --signal-line: rgba(33, 69, 104, .11);
  }
}

* { box-sizing: border-box; }
html { scroll-padding-top: calc(var(--header-height) + 26px); }
body {
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: -.01em;
}
body::before {
  background-image: linear-gradient(var(--signal-grid) 1px, transparent 1px), linear-gradient(90deg, var(--signal-grid) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, #000 0, transparent 66%);
}
body::after {
  position: fixed;
  inset: 0;
  z-index: -3;
  content: "";
  pointer-events: none;
  background: radial-gradient(circle at 83% 7%, color-mix(in srgb, var(--blue) 12%, transparent), transparent 25rem), radial-gradient(circle at 3% 42%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 24rem);
}

.portal-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: var(--header-height);
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-raised) 80%, transparent);
  box-shadow: 0 1px 0 color-mix(in srgb, var(--bg-raised) 60%, transparent);
  backdrop-filter: blur(20px) saturate(1.25);
}
.portal-nav-shell {
  min-height: var(--header-height);
  max-width: var(--container);
  padding-inline: 24px;
}
.portal-brand { gap: 11px; }
.portal-brand img {
  width: 38px;
  height: 38px;
  border: 2px solid color-mix(in srgb, var(--accent) 68%, transparent);
  border-radius: 12px;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 10%, transparent);
}
.portal-brand strong { letter-spacing: -.04em; }
.portal-brand small { color: var(--muted-2); letter-spacing: .11em; }
.portal-nav { gap: 4px; }
.portal-nav a {
  min-height: 38px;
  padding: 0 11px;
  border: 1px solid transparent;
  border-radius: 10px;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 780;
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease, transform 160ms ease;
}
.portal-nav a:hover,
.portal-nav a[aria-current="page"] {
  border-color: var(--border);
  background: var(--surface-2);
  color: var(--text-strong);
}
.portal-nav a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--accent); }
.portal-nav a:active { transform: scale(.97); }
.portal-nav-actions { gap: 8px; }
.nav-status {
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-2);
  font-size: .62rem;
  font-weight: 820;
}
.nav-status i { width: 6px; height: 6px; box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 14%, transparent); }
.theme-toggle,
.github-button {
  min-height: 36px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  box-shadow: none;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}
.theme-toggle:hover,
.github-button:hover { border-color: var(--border-strong); background: var(--surface-2); }
.theme-toggle:active,
.github-button:active { transform: scale(.97); }
.portal-menu-toggle { border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }

.portal-container { width: min(var(--container), calc(100% - 48px)); }
.portal-section { padding-block: 112px; }
.hero-section {
  min-height: 700px;
  padding-top: 122px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--bg-raised) 75%, transparent), transparent 58%);
}
.hero-glow { filter: blur(8px); opacity: .8; }
.hero-glow-one { background: color-mix(in srgb, var(--accent) 13%, transparent); }
.hero-glow-two { background: color-mix(in srgb, var(--blue) 10%, transparent); }
.hero-grid { gap: 72px; }
.eyebrow { margin-bottom: 24px; color: var(--muted); font-size: .66rem; font-weight: 850; letter-spacing: .17em; }
.eyebrow span {
  width: auto;
  min-width: 28px;
  padding-inline: 8px;
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  border-radius: 7px;
  background: color-mix(in srgb, var(--accent) 7%, transparent);
  color: color-mix(in srgb, var(--accent) 84%, var(--text));
}
.hero-copy h1,
.page-hero-grid h1 {
  max-width: 720px;
  font-size: clamp(3.8rem, 7.4vw, 7rem);
  font-weight: 820;
  letter-spacing: -.085em;
  line-height: .88;
}
.hero-copy h1 em,
.page-hero-grid h1 em { -webkit-text-stroke: 1.2px color-mix(in srgb, var(--text-strong) 72%, transparent); }
.hero-lead { max-width: 560px; margin-top: 30px; color: var(--muted); font-size: 1.05rem; line-height: 1.72; }
.hero-actions { gap: 10px; margin-top: 34px; }
.button {
  min-height: 48px;
  padding-inline: 18px;
  border-radius: 12px;
  font-size: .76rem;
  font-weight: 850;
  letter-spacing: -.01em;
  transition: transform 160ms var(--ease-out), box-shadow 160ms ease, background 160ms ease, border-color 160ms ease;
}
.button-primary { background: var(--accent); color: var(--accent-ink); box-shadow: 0 12px 24px color-mix(in srgb, var(--accent) 22%, transparent); }
.button-primary:hover { background: var(--accent-bright); box-shadow: 0 16px 30px color-mix(in srgb, var(--accent) 28%, transparent); }
.button-secondary { border-color: var(--border); background: var(--surface); color: var(--text-strong); }
.button-secondary:hover { border-color: var(--border-strong); background: var(--surface-2); }
.button:active { transform: scale(.97); }
.hero-console,
.page-hero-panel,
.console-card,
.request-card,
.response-card,
.feature-card,
.route-card,
.server-monitor,
.release-log,
.auth-card,
.seo-page-card,
.dashboard-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(15px) saturate(1.15);
}
.hero-console {
  overflow: hidden;
  border-color: color-mix(in srgb, var(--blue) 28%, var(--border));
  background: #0a111a;
  box-shadow: 0 28px 70px rgba(9, 21, 35, .22), 0 0 0 1px rgba(255,255,255,.03) inset;
}
.console-head { min-height: 56px; padding-inline: 20px; border-bottom-color: rgba(255,255,255,.08); }
.console-head b { border-color: rgba(66,230,149,.35); background: rgba(66,230,149,.08); color: #65edaa; }
.console-tabs { padding: 14px 20px 0; }
.console-tabs span { padding: 8px 10px; border-radius: 8px; }
.console-tabs .active { background: rgba(116,164,255,.14); color: #b4ccff; }
.hero-console pre { min-height: 300px; padding: 22px 24px 26px; font-size: .74rem; line-height: 1.85; }
.console-foot { min-height: 48px; padding-inline: 20px; border-top-color: rgba(255,255,255,.08); }
.hero-proof { margin-top: 38px; }
.hero-proof p { color: var(--muted); font-size: .72rem; }
.hero-proof strong { color: var(--text-strong); }

.platform-section,
.foundation-section,
.faq-section { border-top: 1px solid var(--border); background: color-mix(in srgb, var(--bg-raised) 28%, transparent); }
.center-heading h2,
.split-heading h2,
.foundation-grid h2,
.faq-grid h2 { font-size: clamp(2rem, 4.2vw, 4.1rem); font-weight: 800; letter-spacing: -.075em; line-height: .96; }
.center-heading > p:last-child,
.split-heading > p,
.foundation-grid > div:first-child > p:last-child,
.faq-grid > div:first-child > p { color: var(--muted); }
.platform-grid { gap: 10px; }
.platform-grid article {
  min-height: 118px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
  box-shadow: none;
  transition: transform 180ms var(--ease-out), border-color 180ms ease, background 180ms ease;
}
.platform-grid article:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 44%, var(--border)); background: var(--surface-2); }
.platform-grid article span,
.feature-icon,
.route-card-icon,
.panel-icon { color: var(--accent); }
.feature-grid,
.page-card-grid,
.stack-grid { gap: 14px; }
.feature-card,
.route-card { padding: 26px; }
.feature-card:hover,
.route-card:hover { border-color: color-mix(in srgb, var(--blue) 36%, var(--border)); box-shadow: var(--shadow-sm); }
.feature-card h3,
.route-card h3 { letter-spacing: -.04em; }
.feature-card p,
.route-card p { color: var(--muted); }
.feature-card-large { background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 7%, var(--surface)), var(--surface)); }
.mini-code { border-color: var(--border); border-radius: 10px; background: var(--surface-2); }
.stack-grid article { border-color: var(--border); border-radius: 14px; background: var(--surface); }
.stack-grid article > span { border-color: var(--border); border-radius: 9px; background: var(--surface-2); color: var(--blue); }

.page-hero-section { padding-block: 96px 78px; border-bottom-color: var(--border); }
.page-hero-grid { gap: 72px; }
.page-breadcrumbs { margin-bottom: 30px; color: var(--muted-2); }
.page-hero-panel { min-height: 310px; padding: 28px; border-color: color-mix(in srgb, var(--accent) 28%, var(--border)); background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 8%, var(--surface-solid)), var(--surface)); }
.page-hero-panel > strong { font-size: clamp(3.2rem, 6vw, 5rem); }

.collection-stats article,
.stats-cards article { border-color: var(--border); border-radius: 16px; background: var(--surface); box-shadow: none; }
.collection-toolbar,
.docs-header,
.docs-section,
.response-panel,
.endpoint-console,
.code-console-card,
.parameter-console-card { border-color: var(--border); border-radius: 16px; background: var(--surface); }
.collection-search,
.collection-toolbar-meta,
.collection-progress { border-color: var(--border); }
.collection-search { border-radius: 12px; background: var(--surface-2); }
.collection-search:focus-within { border-color: color-mix(in srgb, var(--blue) 58%, var(--border)); box-shadow: 0 0 0 4px color-mix(in srgb, var(--blue) 12%, transparent); }
.endpoint-card { border-color: var(--border); border-radius: 16px; background: var(--surface); box-shadow: none; }
.endpoint-card:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.method-badge { border-radius: 7px; }
.request-card,
.response-card { padding: 24px; }
.request-card .button-block { width: 100%; }
.response-card pre,
.code-example-preview,
.quick-start-code { border: 1px solid rgba(255,255,255,.08); border-radius: 12px; background: #0a111a; }

.reference-playground-section { background: linear-gradient(180deg, transparent, color-mix(in srgb, var(--blue) 5%, transparent)); }
.playground-grid { gap: 14px; }
.request-details > div,
.base-url-row > div { border-color: var(--border); background: var(--surface-2); }
.base-url-row input { min-width: 0; color: var(--text); }
.icon-copy,
.copy-button,
.secondary-button { min-height: 38px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface-2); color: var(--text-strong); }
.icon-copy:hover,
.copy-button:hover,
.secondary-button:hover { border-color: var(--border-strong); background: var(--surface-3); }

.pricing-grid article,
.pricing-note { border-color: var(--border); border-radius: 18px; background: var(--surface); box-shadow: none; }
.pricing-grid article.is-featured { border-color: color-mix(in srgb, var(--accent) 58%, var(--border)); box-shadow: 0 18px 42px color-mix(in srgb, var(--accent) 11%, transparent); }
.price-amount { letter-spacing: -.08em; }
.pricing-grid li::before { color: var(--accent); }

.statistics-section { background: transparent; }
.monitor-orbit { border-color: color-mix(in srgb, var(--accent) 38%, var(--border)); background: radial-gradient(circle, color-mix(in srgb, var(--accent) 12%, transparent), transparent 64%); }
.monitor-bars > div i { background: var(--surface-3); }
.monitor-bars > div i b { background: linear-gradient(90deg, var(--blue), var(--accent)); }
.live-pill { border-color: color-mix(in srgb, var(--accent) 42%, var(--border)); background: color-mix(in srgb, var(--accent) 8%, transparent); }

.portal-footer { border-top-color: var(--border); background: color-mix(in srgb, var(--bg-inverse) 93%, var(--bg)); }
.footer-top { gap: 52px; }
.footer-brand > p,
.footer-column a,
.footer-bottom { color: color-mix(in srgb, var(--bg-inverse) 56%, var(--muted)); }
.footer-column a:hover { color: var(--accent-bright); }

.auth-card { border-color: var(--border); box-shadow: var(--shadow-lg); }
.auth-tabs { border-color: var(--border); background: var(--surface-2); }
.auth-tabs button.is-active { border: 1px solid var(--border); background: var(--surface-solid); }
.account-field input { border-color: var(--border); background: var(--surface-2); }
.account-field input:focus { border-color: color-mix(in srgb, var(--blue) 62%, var(--border)); }
.dashboard-page-hero { background: linear-gradient(135deg, color-mix(in srgb, var(--blue) 5%, transparent), transparent 60%); }
.dashboard-panel { box-shadow: none; }
.dashboard-usage-meter span { background: linear-gradient(90deg, var(--blue), var(--accent)); }
.dashboard-usage-panel { border-color: color-mix(in srgb, var(--accent) 34%, var(--border)); }

.seo-page-shell,
.seo-hero,
.seo-page-card { border-color: var(--border); }
.seo-page-card:hover { border-color: color-mix(in srgb, var(--blue) 36%, var(--border)); }

button, a, input, textarea, select, summary { outline-offset: 3px; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, summary:focus-visible { outline: 2px solid color-mix(in srgb, var(--blue) 78%, white); }

@media (max-width: 900px) {
  .portal-nav-shell { padding-inline: 18px; }
  .hero-section { min-height: auto; padding-top: 88px; }
  .hero-grid { gap: 48px; }
  .portal-section { padding-block: 84px; }
}

@media (max-width: 700px) {
  .portal-container { width: min(var(--container), calc(100% - 32px)); }
  .hero-copy h1,
  .page-hero-grid h1 { font-size: clamp(3.25rem, 15vw, 5.1rem); line-height: .91; }
  .hero-lead { font-size: .96rem; }
  .hero-console pre { min-height: 250px; padding-inline: 18px; font-size: .66rem; }
  .portal-section { padding-block: 72px; }
  .page-hero-section { padding-block: 66px 56px; }
  .feature-card,
  .route-card,
  .request-card,
  .response-card { padding: 20px; }
}

@media (max-width: 520px) {
  .portal-container { width: min(var(--container), calc(100% - 24px)); }
  .portal-brand img { width: 36px; height: 36px; }
  .portal-brand small { display: none; }
  .hero-section { padding-top: 70px; }
  .hero-actions,
  .dashboard-hero-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .hero-actions .button,
  .dashboard-hero-actions .button { width: 100%; min-width: 0; padding-inline: 10px; }
  .hero-actions .button:first-child { grid-column: 1 / -1; }
  .hero-proof { margin-top: 28px; }
  .hero-console pre { min-height: 230px; font-size: .6rem; }
  .page-hero-grid h1 { font-size: clamp(3.1rem, 16vw, 4.6rem); }
  .page-hero-panel { min-height: 240px; }
  .request-details > div { grid-template-columns: 84px 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}


/* Reference-grade dark shell for the branch preview. */
:root,
:root[data-theme="dark"],
:root:not([data-theme="light"]) {
  --bg: #070b11;
  --bg-raised: #0b1119;
  --bg-soft: #0d1621;
  --bg-inverse: #f7fbff;
  --surface: rgba(15, 25, 38, .86);
  --surface-solid: #101b29;
  --surface-2: #132234;
  --surface-3: #1a2e44;
  --text: #c3d0de;
  --text-strong: #f7fbff;
  --muted: #8798aa;
  --muted-2: #5f7388;
  --border: rgba(195, 219, 241, .14);
  --border-strong: rgba(195, 219, 241, .27);
  --accent: #41e695;
  --accent-bright: #79f7b5;
  --accent-ink: #052817;
  --blue: #6c9cff;
  --purple: #a18aff;
  --orange: #ffb16c;
  --danger: #ff7783;
  --shadow-sm: 0 18px 50px rgba(0, 0, 0, .2);
  --shadow-lg: 0 36px 100px rgba(0, 0, 0, .44);
  --signal-grid: rgba(196, 220, 243, .052);
  --signal-line: rgba(196, 220, 243, .12);
}

:root[data-theme="light"] {
  --bg: #f3f6fa;
  --bg-raised: #ffffff;
  --bg-soft: #e8eef5;
  --bg-inverse: #0a1019;
  --surface: rgba(255, 255, 255, .82);
  --surface-solid: #ffffff;
  --surface-2: #edf2f7;
  --surface-3: #e3eaf2;
  --text: #243143;
  --text-strong: #07111f;
  --muted: #64748b;
  --muted-2: #8a98a9;
  --border: rgba(19, 41, 66, .14);
  --border-strong: rgba(19, 41, 66, .24);
  --accent: #12b76a;
  --accent-bright: #3ee58f;
  --accent-ink: #032d1a;
  --blue: #377dff;
  --purple: #7657f3;
  --orange: #ee8d36;
  --danger: #e35c68;
  --shadow-sm: 0 10px 28px rgba(25, 52, 80, .08);
  --shadow-lg: 0 30px 80px rgba(25, 52, 80, .13);
  --signal-grid: rgba(33, 69, 104, .055);
  --signal-line: rgba(33, 69, 104, .11);
}

.portal-header {
  background: rgba(7, 11, 17, .88);
  border-bottom-color: rgba(195, 219, 241, .12);
}
:root[data-theme="light"] .portal-header { background: rgba(255, 255, 255, .88); }
.portal-brand img { border-color: rgba(65, 230, 149, .6); }
.portal-nav a[aria-current="page"] { background: rgba(65, 230, 149, .1); border-color: rgba(65, 230, 149, .25); }
.portal-nav a:hover { background: rgba(108, 156, 255, .1); }
.nav-status { background: rgba(65, 230, 149, .08); }
.hero-section { background: radial-gradient(circle at 76% 30%, rgba(108, 156, 255, .09), transparent 32rem), linear-gradient(135deg, #09121e, #070b11 65%); }
.platform-section,
.foundation-section,
.faq-section { background: rgba(14, 24, 37, .52); }
.hero-copy h1 em,
.page-hero-grid h1 em { -webkit-text-stroke-color: rgba(247, 251, 255, .7); }
.feature-card-large { background: linear-gradient(145deg, rgba(65, 230, 149, .08), rgba(15, 25, 38, .86)); }
.page-hero-section { background: radial-gradient(circle at 90% 10%, rgba(65, 230, 149, .07), transparent 28rem), #09111c; }
.reference-playground-section { background: linear-gradient(180deg, transparent, rgba(108, 156, 255, .06)); }
.portal-footer { background: #05080d; }

@media (max-width: 860px) {
  .portal-header { height: 70px; }
  .portal-nav-shell { min-height: 70px; }
}