/* IRIS website styles. Colour scheme agreed 16 Oct 2026 (mint). Dark mode added 19 Oct 2026. */

@font-face { font-family: "IBM Plex Sans"; src: url("fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2"); font-weight: 600 700; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2"); font-weight: 500; font-display: swap; }

:root {
  --mint: #C3F2DA;
  --mint-soft: #E6F8EF;
  --ink: #0B3B33;
  --accent: #0A5C4E;
  --slate: #2E4A54;
  --teal: #1FD1B5;
  --bg: #F4F7F8;
  --card: #FFFFFF;
  --text-2: #3B5058;
  --text-3: #4A5F66;
  --line: #DCE4E7;
  --line-strong: #C5D2D6;
  --mid-border: #3E7D69;
  --header-bg: #C3F2DA;
  --on-hero-2: #24493F;
  --body-2: #24393F;
  --btn-bg: #0B3B33;
  --btn-fg: #FFFFFF;
  --btn-hover: #072822;
  --badge-bg: #0B3B33;
  --badge-fg: #C3F2DA;
  --step-bg: #C3F2DA;
  --step-fg: #0A5C4E;
  --divider: #E8EEF0;
  --chip-bg: #EEF2F3;
  --chip-fg: #2E4A54;
  --notice-bg: #FFF6E5;
  --notice-fg: #6B4A00;
  --nav-active: rgba(11, 59, 51, 0.1);
  --hover-tint: rgba(11, 59, 51, 0.06);
  --panel-bg: #2E4A54;
  color-scheme: light;
  --radius: 14px;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
}

/* Dark mode: off by default. Visitors switch it on with the header button; the choice is remembered on their device. */
:root[data-theme="dark"] {
  --bg: #0D1A17; --card: #13241F; --ink: #E4F1EC; --accent: #8EE0C2;
  --text-2: #B3C6C0; --text-3: #93AAA3; --line: #22382F; --line-strong: #335047; --mid-border: #5FA58C;
  --header-bg: #12332B; --mint: #12332B; --on-hero-2: #B9D4CA; --body-2: #C9D9D4;
  --btn-bg: #C3F2DA; --btn-fg: #0B3B33; --btn-hover: #A9E8C8; --badge-bg: #C3F2DA; --badge-fg: #0B3B33;
  --step-bg: #1E3D34; --step-fg: #C3F2DA; --divider: #1E322C; --chip-bg: #1E3530; --chip-fg: #CFE3DC;
  --notice-bg: #3A2F12; --notice-fg: #F2D58A; --nav-active: rgba(195, 242, 218, 0.12); --hover-tint: rgba(195, 242, 218, 0.08);
  --panel-bg: #1F3A44; color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.5; padding-bottom: calc(72px + env(safe-area-inset-bottom)); }
a { color: var(--accent); }
a:hover { color: var(--ink); }
h1, h2, h3 { margin: 0; font-weight: 600; line-height: 1.2; }
p { margin: 0; }
/* Page fills the window; footer sits at the bottom on tall screens. */
body { display: flex; flex-direction: column; min-height: 100vh; min-height: 100dvh; }
main { flex: 1 0 auto; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 8px; z-index: 50; background: var(--card); padding: 8px 12px; }

.wrap { width: 100%; max-width: 1040px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { background: var(--header-bg); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 20px; letter-spacing: 0.12em; }
.top-nav { display: none; gap: 4px; }
.top-nav a { display: flex; align-items: center; min-height: 44px; padding: 0 14px; border-radius: 10px; color: var(--ink); text-decoration: none; font-weight: 500; }
.top-nav a[aria-current="page"] { background: var(--nav-active); font-weight: 600; }
.header-end { display: flex; align-items: center; gap: 4px; }
.theme-toggle { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 10px; border: 0; background: transparent; color: var(--ink); cursor: pointer; }
.theme-toggle:hover { background: var(--hover-tint); }
.theme-toggle .i-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .i-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .i-moon { display: none; }
.header-actions { display: flex; align-items: center; gap: 8px; }
.status { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--on-hero-2); }
.status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }

.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-size: 20px; }
.brand-full { font-family: var(--mono); font-size: 9.5px; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent); margin-top: 3px; max-width: 24ch; text-wrap: balance; }
@media (min-width: 420px) { .brand-full { max-width: none; } }
@media (min-width: 768px) { .brand-full { font-size: 11px; letter-spacing: 0.1em; } }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 52px; padding: 0 20px; border-radius: 12px; font: inherit; font-size: 16px; font-weight: 600; text-decoration: none; cursor: pointer; border: 1px solid transparent; }
.btn-primary { background: var(--btn-bg); color: var(--btn-fg); }
.btn-primary:hover { background: var(--btn-hover); color: var(--btn-fg); }
.btn-outline { background: transparent; color: var(--ink); border-color: var(--mid-border); font-weight: 500; }
.btn-outline:hover { background: var(--hover-tint); color: var(--ink); }
.btn-small { min-height: 44px; padding: 0 16px; font-size: 15px; }
.btn-block { width: 100%; }

/* Hero */
.hero { background: var(--mint); padding: 28px 0 40px; }
.hero .wrap { display: flex; flex-direction: column; gap: 18px; }
.eyebrow { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); }
.hero h1 { font-size: 32px; line-height: 1.15; max-width: 32ch; }
.hero .lede { font-size: 17px; color: var(--on-hero-2); max-width: 75ch; text-wrap: pretty; }
.hero-actions { display: flex; flex-direction: column; gap: 12px; padding-top: 6px; }

/* Sections */
.section { padding: 32px 0 8px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.section h2 { font-size: 21px; }
.muted { color: var(--text-2); }

/* Report cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.card { display: flex; flex-direction: column; gap: 10px; padding: 18px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--line); color: var(--ink); text-decoration: none; }
a.card:hover { border-color: var(--mid-border); color: var(--ink); }
.card-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 14px; color: var(--text-3); }
.card-title { font-size: 18px; font-weight: 600; line-height: 1.3; }
.card-desc { font-size: 15px; color: var(--text-2); }
.card-cta { display: flex; align-items: center; gap: 6px; font-size: 15px; font-weight: 600; color: var(--accent); margin-top: auto; }

.badge { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.08em; padding: 4px 8px; border-radius: 6px; text-transform: uppercase; }
.badge-brief { background: var(--badge-bg); color: var(--badge-fg); }

/* Steps */
.steps { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.step { display: flex; gap: 14px; align-items: flex-start; }
.step-num { flex: none; display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 50%; background: var(--step-bg); color: var(--step-fg); font-weight: 600; }
.step strong { display: block; font-size: 16px; }
.step span { font-size: 15px; color: var(--text-2); }

/* Slate panel */
.panel-slate { margin-top: 32px; padding: 20px; border-radius: var(--radius); background: var(--panel-bg); color: #F4F7F8; display: flex; flex-direction: column; gap: 10px; }
.panel-slate .eyebrow { color: var(--teal); }
.panel-slate p { color: #D5E0E3; }

/* Footer */
.site-footer { padding: 32px 0 24px; font-size: 14px; color: var(--text-3); }
.site-footer .wrap { display: flex; flex-direction: column; gap: 8px; }
.site-footer a { color: var(--text-3); }

/* Bottom tab bar (mobile) */
.tabbar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 20; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); background: var(--card); border-top: 1px solid var(--line); padding-bottom: env(safe-area-inset-bottom); }
.tabbar a { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 10px 0 12px; color: var(--text-3); text-decoration: none; font-size: 12px; font-weight: 500; }
.tabbar a[aria-current="page"] { color: var(--ink); font-weight: 600; }
.tabbar a[aria-current="page"] svg { color: var(--accent); }

/* Reports library */
.page-title { padding: 24px 0 8px; }
.page-title h1 { font-size: 28px; }
.search { display: flex; align-items: center; gap: 10px; min-height: 48px; padding: 0 14px; border-radius: 12px; background: var(--card); border: 1px solid var(--line-strong); margin-top: 16px; }
.search input { flex: 1; min-width: 0; border: 0; outline: none; background: transparent; font: inherit; color: var(--ink); }
.list { display: flex; flex-direction: column; gap: 12px; padding: 16px 0 24px; }
.row { display: flex; align-items: center; gap: 14px; min-height: 76px; padding: 14px 16px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--line); color: var(--ink); text-decoration: none; }
a.row:hover { border-color: var(--mid-border); color: var(--ink); }
.row-icon { flex: none; display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 12px; font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: 0.06em; }
.row-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.row-title { font-size: 16px; font-weight: 600; line-height: 1.3; }
.row-meta { font-size: 14px; color: var(--text-3); }
.row-end { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.empty { padding: 24px 0; text-align: center; color: var(--text-3); }

/* Report reader */
.back { display: inline-flex; align-items: center; gap: 4px; min-height: 44px; color: var(--ink); text-decoration: none; font-weight: 500; }
.report-hero { background: var(--mint); padding: 8px 0 28px; }
.report-hero .wrap { display: flex; flex-direction: column; gap: 14px; }
.report-hero h1 { font-size: 28px; }
.report-hero .lede { color: var(--on-hero-2); }
.report-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.report-actions .btn { white-space: nowrap; padding: 0 12px; font-size: 15px; }
.jump { position: sticky; top: 0; z-index: 10; background: var(--card); border-bottom: 1px solid var(--line); }
.jump .wrap { display: flex; gap: 8px; padding-top: 12px; padding-bottom: 12px; overflow-x: auto; }
.jump a { flex: none; display: flex; align-items: center; min-height: 40px; padding: 0 14px; border-radius: 20px; border: 1px solid var(--line-strong); color: var(--ink); text-decoration: none; font-size: 14px; font-weight: 500; }
.notice { margin-top: 16px; padding: 10px 14px; border-radius: 10px; background: var(--notice-bg); color: var(--notice-fg); font-size: 14px; }
.reader { max-width: 720px; }
.reader section { padding: 28px 0 0; scroll-margin-top: 72px; }
.reader h2 { font-size: 21px; margin-bottom: 12px; }
.cia { border-radius: var(--radius); background: var(--card); border: 1px solid var(--line); overflow: hidden; margin-top: 14px; }
.cia div { display: flex; align-items: center; justify-content: space-between; min-height: 56px; padding: 0 16px; border-bottom: 1px solid var(--divider); }
.cia div:last-child { border-bottom: 0; }
.cia .level { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.cia .sw { width: 12px; height: 12px; border-radius: 3px; }
.sw-high { background: var(--ink); }
.sw-moderate { background: #0A8F7A; }
.sw-low { background: #B9EFE5; border: 1px solid #0A8F7A; }
details.finding { border-radius: var(--radius); background: var(--card); border: 1px solid var(--line); margin-bottom: 12px; }
details.finding summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 60px; padding: 10px 16px; cursor: pointer; list-style: none; }
details.finding summary::-webkit-details-marker { display: none; }
details.finding[open] summary svg { transform: rotate(180deg); }
.finding-tag { font-family: var(--mono); font-size: 12px; color: var(--accent); }
.finding-title { font-weight: 600; }
.finding-body { padding: 0 16px 16px; color: var(--body-2); display: flex; flex-direction: column; gap: 8px; }
.actions { border-radius: var(--radius); background: var(--card); border: 1px solid var(--line); margin-bottom: 12px; }
.actions label { display: flex; align-items: flex-start; gap: 14px; padding: 16px; border-bottom: 1px solid var(--divider); cursor: pointer; }
.actions label:last-child { border-bottom: 0; }
.actions input { width: 22px; height: 22px; margin: 1px 0 0; accent-color: #0A8F7A; flex: none; }
.actions .map { display: inline-block; margin-top: 6px; font-family: var(--mono); font-size: 11px; padding: 3px 6px; border-radius: 5px; background: var(--chip-bg); color: var(--chip-fg); }

/* About */
.prose { max-width: 680px; padding-bottom: 32px; }
.prose h2 { font-size: 20px; margin: 28px 0 10px; }
.prose p { margin-bottom: 12px; color: var(--body-2); }
.prose ul { margin: 0 0 12px; padding-left: 20px; color: var(--body-2); }
.prose li { margin-bottom: 6px; }

/* Desktop */
@media (min-width: 768px) {
  body { padding-bottom: 0; }
  .tabbar { display: none; }
  .top-nav { display: flex; }
  .hero { padding: 56px 0 64px; }
  .hero h1 { font-size: 44px; }
  .hero-actions { flex-direction: row; }
  .page-title h1, .report-hero h1 { font-size: 34px; }
  .report-actions { max-width: 420px; }
  .site-footer .wrap { flex-direction: row; justify-content: space-between; }
}