/* PROJECT 2060.15 — canonical academic catalog stylesheet.
   Edit this file; the builder mirrors it to Cloudflare Pages. */
:root{color-scheme:light;--bg:#f4f7f8;--ink:#173448;--muted:#597382;--teal:#007d75;--line:#d7e4e9;--paper:#fff;--catalog-section-bg:#fff;--catalog-heading-bg:#ecf4f5;--catalog-separator:#e5edf0;--catalog-code:#006d68;--catalog-description:#405e70;--catalog-warning-bg:#fff8e8;--catalog-warning-border:#e8c57d;--catalog-warning-heading:#825100;--catalog-error:#9b3c34}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);font:16px/1.95 system-ui,'Segoe UI',Tahoma,sans-serif;color:var(--ink)}.skip{position:absolute;top:-100px;right:20px;padding:8px 15px;background:white;z-index:3}.skip:focus{top:7px}.top{background:#133749;color:#fff;display:flex;gap:20px;justify-content:space-between;align-items:center;padding:13px max(20px,calc((100vw - 1160px)/2))}.top a{color:white;text-decoration:none}.home{display:flex;align-items:center;gap:10px;font-weight:700}.home img{width:34px;height:34px;object-fit:contain}.layout{max-width:1160px;margin:0 auto;padding:34px 18px 60px}.hero{padding:28px 30px;background:linear-gradient(120deg,#e4f3f1,#fff);border:1px solid #d0eae6;border-radius:22px}.eyebrow{color:#006d68;letter-spacing:.06em;font-size:13px;font-weight:800}.hero h1{margin:5px 0;font-size:clamp(25px,3vw,39px)}.hero>p:last-child{max-width:900px;margin:0;color:#466674}.controls{margin:22px 0;background:var(--paper);border-radius:17px;border:1px solid var(--line);display:flex;flex-wrap:wrap;align-items:end;gap:16px;padding:19px}.form-group{display:grid;gap:5px;min-width:175px}.form-group.grow{flex:1;min-width:220px}label{font-weight:650;font-size:14px}input,select,button{font:inherit}input,select{width:100%;padding:10px 12px;background:#fff;border:1px solid #aebfc7;border-radius:10px;color:var(--ink)}button{padding:10px 15px;border:0;border-radius:10px;cursor:pointer;background:var(--teal);color:#fff;font-weight:700}button:disabled{opacity:.5;cursor:wait}:is(a,input,select,summary,button):focus-visible{outline:3px solid #1c9f99;outline-offset:3px}.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.stat{display:grid;gap:2px;padding:17px;background:white;border:1px solid var(--line);border-radius:14px}.stat strong{font-size:26px;font-variant-numeric:tabular-nums;line-height:1.4}.stat span{font-size:13px;color:var(--muted)}.notice{padding:17px 20px;background:var(--catalog-warning-bg);border:1px solid var(--catalog-warning-border);color:var(--ink);border-radius:14px;margin-top:15px}.notice strong{color:var(--catalog-warning-heading)}.notice p{margin:5px 0 0}.notice[hidden]{display:none}.result-count{color:var(--muted);font-size:14px;margin:20px 0 12px}.category{border:1px solid var(--line);border-radius:16px;background:var(--catalog-section-bg);margin:17px 0;overflow:hidden}.category-title{display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;align-items:center;padding:15px 22px;background:var(--catalog-heading-bg);border-bottom:1px solid var(--line)}.category-title h2{margin:0;font-size:19px}.category-title span{font-size:13px;color:var(--muted)}.course{padding:19px 22px;border-bottom:1px solid var(--catalog-separator)}.course:last-child{border-bottom:0}.course-head{display:flex;justify-content:space-between;gap:15px;font-size:13px}.code{direction:ltr;font-variant-numeric:tabular-nums;letter-spacing:.02em;font-weight:750;color:var(--catalog-code)}.credit{color:var(--muted)}.course h3{font-size:18px;margin:5px 0 3px}.name-en{color:var(--muted);direction:ltr;text-align:right;font-size:14px;margin:0 0 8px}.course-description summary{cursor:pointer;color:var(--teal);font-weight:650;list-style:revert}.course-description p{white-space:pre-line;margin:7px 0;color:var(--catalog-description)}.placeholder,.empty,.error{background:white;border:1px solid var(--line);border-radius:13px;padding:22px}.error{color:var(--catalog-error)}footer{text-align:center;padding:25px;border-top:1px solid var(--line);color:var(--muted)}footer a{color:var(--teal)}@media(max-width:690px){.top{padding:12px 15px;flex-wrap:wrap;gap:10px}.layout{padding:16px 12px 34px}.hero{padding:20px}.controls{padding:13px}.form-group{width:100%}.metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.category-title{padding:12px 15px}.course{padding:16px}.stat{padding:11px}.stat strong{font-size:23px}}@media print{.top,.controls,footer,.skip{display:none}.layout{padding:0}.course-description{display:block}.course-description p{display:block}.category{break-inside:avoid}}

.catalog-retry{display:inline-flex;gap:10px;align-items:center;border:1px solid #3585ba;border-radius:12px;background:#115e92;color:white;padding:10px 16px;cursor:pointer;font:inherit}.catalog-retry svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.catalog-retry:focus-visible{outline:3px solid #62c9de;outline-offset:3px}

.catalog-retry .ppu-retry-icon{display:inline-block;min-width:22px;font-size:24px;line-height:1;transform-origin:50% 50%}.catalog-retry:active .ppu-retry-icon{animation:catalog-turn .75s linear infinite}@keyframes catalog-turn{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.catalog-retry:active .ppu-retry-icon{animation:none}}

/* Explicit dark mode matches the central user preference. */
body.dark{--bg:#0d2633;--ink:#edf6fc;--muted:#adc6d2;--teal:#68d6ce;--line:#365361;--paper:#192f3d;--catalog-section-bg:#192f3d;--catalog-heading-bg:#234556;--catalog-separator:#375362;--catalog-code:#8be8dc;--catalog-description:#bed6e0;--catalog-warning-bg:#443821;--catalog-warning-border:#977744;--catalog-warning-heading:#ffe3a1;--catalog-error:#ffc0b6;color-scheme:dark}
body.dark .hero{background:linear-gradient(120deg,#164350,#21364b);border-color:var(--line)}body.dark .hero>p:last-child{color:#b9d5dd}body.dark .eyebrow{color:#88eee2}
body.dark :is(input,select,.course,.stat,.placeholder,.empty,.error){background:var(--paper);color:var(--ink);border-color:var(--line)}body.dark .course-description p{color:var(--catalog-description)}
body.dark .category-title{color:var(--ink)}

/* Shared theme control: its preference key is identical to the main shell. */
.catalog-theme{display:inline-flex;align-items:center;gap:8px;color:#f4fbff;font-size:13px;font-weight:750;white-space:nowrap}
.catalog-theme select{width:auto;min-width:98px;min-height:42px;border:1px solid #a8c9dc;border-radius:10px;padding:6px 10px;background:#163e52;color:#fff;cursor:pointer}
.catalog-theme select option{background:#163e52;color:#fff}
.catalog-theme select:focus-visible{outline:3px solid #8be8dc;outline-offset:3px}
@media(max-width:690px){.catalog-theme{margin-inline-start:auto}}
@media(prefers-reduced-motion:reduce){.catalog-theme select{scroll-behavior:auto}}