/*
 * RealTraffic brand stylesheet.
 * Source of truth: brand/realtraffic/README.md and tokens.json (repo root).
 * Light first; :root[data-theme="dark"] overrides. Square corners (2px at most on
 * controls), 1px hairline rules, flat fills only, 4px spacing grid.
 * Every component class is prefixed rt- so it cannot collide with page classes.
 * Bare-element defaults inside .rt-page use :where() (zero specificity) so a page's
 * own <style> block and the rt- classes always win over them.
 */

/* ---------- Fonts: IBM Plex (SIL OFL, see fonts/OFL.txt), from @fontsource ---------- */

/* ibm-plex-sans-latin-ext-400-normal */
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/brand/fonts/ibm-plex-sans-latin-ext-400-normal.woff2) format('woff2');
  unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}
/* ibm-plex-sans-latin-400-normal */
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/brand/fonts/ibm-plex-sans-latin-400-normal.woff2) format('woff2');
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
/* ibm-plex-sans-latin-ext-400-italic */
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url(/brand/fonts/ibm-plex-sans-latin-ext-400-italic.woff2) format('woff2');
  unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}
/* ibm-plex-sans-latin-400-italic */
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url(/brand/fonts/ibm-plex-sans-latin-400-italic.woff2) format('woff2');
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
/* ibm-plex-sans-latin-ext-500-normal */
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/brand/fonts/ibm-plex-sans-latin-ext-500-normal.woff2) format('woff2');
  unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}
/* ibm-plex-sans-latin-500-normal */
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/brand/fonts/ibm-plex-sans-latin-500-normal.woff2) format('woff2');
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
/* ibm-plex-sans-latin-ext-600-normal */
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(/brand/fonts/ibm-plex-sans-latin-ext-600-normal.woff2) format('woff2');
  unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}
/* ibm-plex-sans-latin-600-normal */
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(/brand/fonts/ibm-plex-sans-latin-600-normal.woff2) format('woff2');
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
/* ibm-plex-mono-latin-ext-400-normal */
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/brand/fonts/ibm-plex-mono-latin-ext-400-normal.woff2) format('woff2');
  unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}
/* ibm-plex-mono-latin-400-normal */
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/brand/fonts/ibm-plex-mono-latin-400-normal.woff2) format('woff2');
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}
/* ibm-plex-mono-latin-ext-500-normal */
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/brand/fonts/ibm-plex-mono-latin-ext-500-normal.woff2) format('woff2');
  unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}
/* ibm-plex-mono-latin-500-normal */
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/brand/fonts/ibm-plex-mono-latin-500-normal.woff2) format('woff2');
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}

/* ---------- Tokens ---------- */

:root {
  --rt-sky: #2B63E0;
  --rt-sky-hover: #2456C7;
  --rt-amber: #F2A516;
  --rt-graphite: #0E1013;
  --rt-paper: #ECEFF2;
  --rt-ground: #F4F6F8;
  --rt-surface: #FFFFFF;
  --rt-display: #07080A;
  --rt-display-dim: #8A939D;
  --rt-hairline: #D5DADF;
  --rt-text: #0E1013;
  --rt-text-muted: #4A525B;
  --rt-link: #1F4FC4;
  --rt-on-sky: #FFFFFF;
  --rt-ink: #0E1013;
  --rt-on-ink: #FFFFFF;
  --rt-hover: #ECEFF2;
  --rt-error: #B3261E;

  --rt-sans: "IBM Plex Sans", system-ui, sans-serif;
  --rt-mono: "IBM Plex Mono", ui-monospace, monospace;

  --rt-s1: 4px;
  --rt-s2: 8px;
  --rt-s4: 16px;
  --rt-s6: 24px;
  --rt-s8: 32px;
  --rt-s16: 64px;

  --rt-radius: 2px;

  color-scheme: light;
}

:root[data-theme="dark"] {
  --rt-ground: #0E1013;
  --rt-surface: #1B1F24;
  --rt-hairline: #3A4048;
  --rt-text: #ECEFF2;
  --rt-text-muted: #8A939D;
  --rt-link: #7AA2FF;
  --rt-ink: #ECEFF2;
  --rt-on-ink: #0E1013;
  --rt-hover: #252A31;
  --rt-error: #FF8A80;

  color-scheme: dark;
}

/* ---------- Base and type ---------- */

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

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

body {
  margin: 0;
  background: var(--rt-ground);
  color: var(--rt-text);
  font: 400 16px/26px var(--rt-sans);
}

h1, h2, h3 { font-family: var(--rt-sans); font-weight: 600; margin: 0 0 var(--rt-s4); }
h1 { font-size: 40px; line-height: 46px; }
h2 { font-size: 28px; line-height: 34px; }
h3 { font-size: 20px; line-height: 28px; }
p { margin: 0 0 var(--rt-s4); }

.rt-display { font-size: 56px; line-height: 60px; font-weight: 600; margin: 0 0 var(--rt-s6); }
.rt-small { font-size: 14px; line-height: 22px; }

a { color: var(--rt-link); text-decoration: none; }
a:hover { text-decoration: underline; }

.rt-label {
  font: 500 12px/16px var(--rt-mono);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--rt-text-muted);
}
.rt-data { font: 400 15px/24px var(--rt-mono); }
.rt-readout { font: 500 24px/32px var(--rt-mono); }

code, pre, kbd, samp { font-family: var(--rt-mono); }

pre, .rt-well {
  background: var(--rt-display);
  color: var(--rt-paper);
  padding: var(--rt-s4);
  border-radius: 0;
  overflow-x: auto;
  margin: 0 0 var(--rt-s4);
}
pre { font: 400 15px/24px var(--rt-mono); }
pre .rt-amber, .rt-well .rt-amber { color: var(--rt-amber); }
pre .rt-dim, .rt-well .rt-dim { color: var(--rt-display-dim); }
:root[data-theme="dark"] pre,
:root[data-theme="dark"] .rt-well { border: 1px solid var(--rt-hairline); }

:focus-visible { outline: 2px solid var(--rt-sky); outline-offset: 2px; }

hr, .rt-rule {
  border: 0;
  border-top: 1px solid var(--rt-hairline);
  margin: var(--rt-s6) 0;
}

@media (max-width: 767px) {
  .rt-display { font-size: 36px; line-height: 42px; }
  h1 { font-size: 30px; line-height: 36px; }
  h2 { font-size: 24px; line-height: 30px; }
}

/* ---------- Nav ---------- */

.rt-nav {
  background: var(--rt-surface);
  border-bottom: 1px solid var(--rt-hairline);
  height: 56px;
}
.rt-nav-inner {
  max-width: 1100px;
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--rt-s6);
  display: flex;
  align-items: center;
  gap: var(--rt-s6);
}

.rt-brand {
  display: flex;
  align-items: center;
  gap: var(--rt-s2);
  text-decoration: none;
  color: var(--rt-text);
}
.rt-brand:hover { text-decoration: none; }
.rt-brand img { width: 28px; height: 28px; }
.rt-wordmark {
  font: 400 20px/28px var(--rt-sans);
  color: var(--rt-text);
  white-space: nowrap;
}
.rt-wordmark b { font-weight: 600; }

.rt-nav-links { display: flex; align-items: center; height: 100%; }
.rt-nav-links a {
  display: block;
  font-size: 14px;
  line-height: 56px;
  padding: 0 12px;
  color: var(--rt-text);
  text-decoration: none;
  border: 0;
}
.rt-nav-links a:hover,
.rt-nav-links a.active { color: var(--rt-link); text-decoration: none; }

.rt-nav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--rt-s2);
}

.rt-stat {
  font: 400 12px/16px var(--rt-mono);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--rt-text-muted);
  border: 1px solid var(--rt-hairline);
  padding: var(--rt-s1) var(--rt-s2);
  white-space: nowrap;
}

.rt-nav-toggle {
  display: none;
  height: 32px;
  padding: 0 12px;
  background: transparent;
  color: var(--rt-text);
  border: 1px solid var(--rt-hairline);
  border-radius: var(--rt-radius);
  font: 500 14px/30px var(--rt-sans);
  cursor: pointer;
}

.rt-nav-mobile { display: none; }

@media (max-width: 767px) {
  .rt-nav-links { display: none; }
  .rt-nav-toggle { display: inline-block; }
  .rt-nav-mobile.open {
    display: block;
    background: var(--rt-surface);
    border-bottom: 1px solid var(--rt-hairline);
  }
  .rt-nav-mobile a {
    display: block;
    padding: 12px var(--rt-s6);
    font-size: 14px;
    line-height: 22px;
    color: var(--rt-text);
    text-decoration: none;
  }
  .rt-nav-mobile a:hover,
  .rt-nav-mobile a.active { color: var(--rt-link); text-decoration: none; }
}

/* ---------- Theme toggle ---------- */

.rt-theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  margin: 0;
  background: transparent;
  color: var(--rt-text);
  border: 1px solid var(--rt-hairline);
  border-radius: var(--rt-radius);
  cursor: pointer;
}
.rt-theme-toggle:hover { background: var(--rt-hover); }
.rt-theme-toggle svg { width: 16px; height: 16px; display: block; }

/* ---------- Buttons ---------- */

/* Unclassed buttons inside .rt-page look primary (zero specificity, classes win). */
:where(.rt-page) :where(button, input[type="submit"]) {
  display: inline-block;
  font: 500 15px/24px var(--rt-sans);
  padding: var(--rt-s2) var(--rt-s4);
  border-radius: var(--rt-radius);
  border: 1px solid transparent;
  background: var(--rt-sky);
  color: var(--rt-on-sky);
  cursor: pointer;
}
:where(.rt-page) :where(button, input[type="submit"]):hover { background: var(--rt-sky-hover); }
:where(.rt-page) :where(button, input[type="submit"]):disabled { opacity: 0.5; cursor: default; }

.rt-btn {
  display: inline-block;
  font: 500 15px/24px var(--rt-sans);
  padding: var(--rt-s2) var(--rt-s4);
  border-radius: var(--rt-radius);
  border: 1px solid transparent;
  background: transparent;
  color: var(--rt-text);
  text-align: center;
  text-decoration: none;
  vertical-align: middle;
  white-space: nowrap;
  cursor: pointer;
}
.rt-btn:hover { text-decoration: none; }

.rt-btn-primary { background: var(--rt-sky); color: var(--rt-on-sky); }
.rt-btn-primary:hover { background: var(--rt-sky-hover); }

.rt-btn-secondary { background: transparent; border-color: var(--rt-ink); color: var(--rt-ink); }
.rt-btn-secondary:hover { background: var(--rt-hover); }

.rt-btn-ink { background: var(--rt-ink); color: var(--rt-on-ink); }

.rt-btn-danger { background: transparent; border-color: var(--rt-error); color: var(--rt-error); }
.rt-btn-danger:hover { background: var(--rt-hover); }

.rt-btn:disabled { opacity: 0.5; cursor: default; }

/* Small button for table rows. */
.rt-btn-sm { padding: 2px 10px; font-size: 13px; line-height: 20px; }

/* ---------- Inputs ---------- */

:where(.rt-page) :where(
  input[type="text"], input[type="email"], input[type="password"], input[type="number"],
  input[type="search"], input[type="date"], input[type="datetime-local"], input[type="time"],
  input[type="url"], input[type="tel"], input:not([type]), select, textarea) {
  background: var(--rt-surface);
  color: var(--rt-text);
  border: 1px solid var(--rt-hairline);
  border-radius: var(--rt-radius);
  padding: var(--rt-s2);
  font: 400 16px/24px var(--rt-sans);
  max-width: 100%;
}
:where(.rt-page) :where(
  input[type="text"], input[type="email"], input[type="password"], input[type="number"],
  input[type="search"], input[type="date"], input[type="datetime-local"], input[type="time"],
  input[type="url"], input[type="tel"], input:not([type]), select, textarea):focus { border-color: var(--rt-sky); }
:where(.rt-page) :where(input[type="checkbox"], input[type="radio"]) { accent-color: var(--rt-sky); }
:where(.rt-page) :where(label) { font-size: 14px; font-weight: 500; }

/* One labelled form field: label above a full-width control. */
.rt-field { margin-bottom: var(--rt-s4); }
.rt-field label { display: block; margin-bottom: var(--rt-s1); }
.rt-field input:not([type="checkbox"]):not([type="radio"]), .rt-field select, .rt-field textarea { width: 100%; }

/* ---------- Panel ---------- */

.rt-panel {
  background: var(--rt-surface);
  border: 1px solid var(--rt-hairline);
  border-radius: 0;
  padding: var(--rt-s6);
  margin-bottom: var(--rt-s6);
}
/* 2px sky border; padding drops by 1px so the content does not shift. */
.rt-panel-selected {
  border: 2px solid var(--rt-sky);
  padding: 23px;
}

/* ---------- Tables ---------- */

:where(.rt-page) :where(table), .rt-table {
  width: 100%;
  border-collapse: collapse;
}
:where(.rt-page) :where(th), .rt-table th {
  font: 500 12px/16px var(--rt-mono);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--rt-text-muted);
  text-align: left;
}
:where(.rt-page) :where(th, td), .rt-table th, .rt-table td {
  padding: var(--rt-s2) 12px;
  border: 0;
  border-bottom: 1px solid var(--rt-hairline);
  background: transparent;
}
.rt-table-data td { font: 400 14px/22px var(--rt-mono); }

/* ---------- Badges ---------- */

/* Every badge carries a 1px border (transparent unless outlined) so all are the same height. */
.rt-badge {
  display: inline-block;
  font: 500 11px/16px var(--rt-mono);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  padding: 2px var(--rt-s2);
  border: 1px solid transparent;
  border-radius: var(--rt-radius);
  vertical-align: middle;
  white-space: nowrap;
}
.rt-badge-standard { background: var(--rt-sky); color: var(--rt-on-sky); }
.rt-badge-pro { background: var(--rt-amber); color: var(--rt-graphite); }
.rt-badge-active { background: var(--rt-ink); color: var(--rt-on-ink); }
.rt-badge-expired,
.rt-badge-muted { background: transparent; border-color: var(--rt-hairline); color: var(--rt-text-muted); }
.rt-badge-admin { background: transparent; border-color: var(--rt-ink); color: var(--rt-ink); }

/* ---------- Messages ---------- */

.rt-msg {
  background: var(--rt-surface);
  border: 1px solid var(--rt-hairline);
  border-left-width: 3px;
  padding: 12px var(--rt-s4);
  margin-bottom: var(--rt-s4);
}
.rt-msg-ok { border-left-color: var(--rt-sky); }
.rt-msg-error { border-left-color: var(--rt-error); color: var(--rt-error); }
.rt-msg-caution { border-left-color: var(--rt-amber); color: var(--rt-text); }

.rt-ok { font-weight: 500; color: var(--rt-text); }
.rt-error { font-weight: 500; color: var(--rt-error); }
.rt-muted { color: var(--rt-text-muted); }
.rt-info { color: var(--rt-text-muted); font-size: 14px; line-height: 22px; }
div.rt-info { margin-bottom: var(--rt-s2); }
/* A quiet caution on a single value (inferred, expected, paused): amber rule, text stays readable. */
.rt-note { font-size: 12px; border-left: 2px solid var(--rt-amber); padding-left: var(--rt-s1); color: var(--rt-text); }

/* ---------- Modal ---------- */

.rt-modal-backdrop { position: fixed; inset: 0; background: rgba(0, 0, 0, 0.45); z-index: 1000; }
.rt-modal { background: var(--rt-surface); border: 1px solid var(--rt-hairline); padding: var(--rt-s6); }

/* ---------- Page layouts ---------- */

.rt-shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--rt-s6);
  display: flex;
  gap: var(--rt-s8);
}

.rt-side { width: 208px; flex-shrink: 0; }

.rt-side-toggle {
  display: none;
  width: 100%;
  font: 500 15px/24px var(--rt-sans);
  padding: var(--rt-s2) var(--rt-s4);
  margin: 0 0 var(--rt-s2);
  background: transparent;
  color: var(--rt-ink);
  border: 1px solid var(--rt-ink);
  border-radius: var(--rt-radius);
  text-align: left;
  cursor: pointer;
}
.rt-side-toggle:hover { background: var(--rt-hover); }

.rt-side-menu {
  background: var(--rt-surface);
  border: 1px solid var(--rt-hairline);
}
.rt-side-menu a {
  display: block;
  font-size: 14px;
  line-height: 22px;
  padding: var(--rt-s2) var(--rt-s4);
  color: var(--rt-text);
  border-left: 2px solid transparent;
  text-decoration: none;
}
.rt-side-menu a:hover { background: var(--rt-hover); text-decoration: none; }
.rt-side-menu a.active {
  border-left-color: var(--rt-sky);
  font-weight: 600;
  color: var(--rt-text);
}

.rt-main { flex: 1; min-width: 0; }

.rt-narrow {
  max-width: 480px;
  margin: 0 auto;
  padding: var(--rt-s8) var(--rt-s6);
}
.rt-narrow h1 { font-size: 28px; line-height: 34px; }

.rt-footer {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--rt-s6);
  border-top: 1px solid var(--rt-hairline);
  color: var(--rt-text-muted);
  font-size: 14px;
  line-height: 22px;
}

@media (max-width: 767px) {
  .rt-shell { flex-direction: column; gap: var(--rt-s6); }
  .rt-side { width: auto; }
  .rt-side-toggle { display: block; }
  .rt-side-menu { display: none; }
  .rt-side-menu.open { display: block; }
}

/* ---------- Theme helpers ---------- */

.rt-only-dark { display: none; }
:root[data-theme="dark"] .rt-only-light { display: none; }
/* revert = the element's own natural display (inline for img/span, block for div). */
:root[data-theme="dark"] .rt-only-dark { display: revert; }