/* ───────────────────────────────────────────────────────────────────────────
   UBU Planner — Magnolia theme (light = petal cream, dark = near-black bloom)
   Design language: one diagonal axis, hierarchy from size + colour (not weight),
   hairline borders, gradients instead of shadows, a single warm accent reserved for
   the logo mark and eyebrow, green only for "done / open / delta" chips.
   ─────────────────────────────────────────────────────────────────────────── */

:root,
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #faf6f1;
  --bg-2: #f3ece3;
  --surface: #fffdfa;
  --surface-2: #f6f0e8;
  --border: #e6dccf;
  --border-strong: #d6c9b8;
  --text: #1f1a17;
  --text-2: #4a413a;
  --muted: #7d7167;
  --accent: #b2446f; /* magnolia rose — eyebrow + logo only */
  --accent-soft: rgba(178, 68, 111, 0.1);
  --glow: rgba(224, 150, 178, 0.28);
  --glow-2: rgba(120, 150, 110, 0.1);
  --ok: #2b7a4f;
  --ok-bg: rgba(43, 122, 79, 0.11);
  --danger: #b23b2e;
  --danger-bg: rgba(178, 59, 46, 0.09);
  --btn-bg: #1f1a17;
  --btn-fg: #faf6f1;
  --btn-border: #1f1a17;
  --btn-hover-border: #b2446f;
  --mock-surface: #fffdfa;
  --mock-border: #e6dccf;
  --veil: rgba(250, 246, 241, 0.72);
  --c1: #b9577f; --c2: #3f8f63; --c3: #a67a4a; --c4: #8a5aa8;
  --c5: #6f9a5f; --c6: #cc7a62; --c7: #5b7b96; --c8: #b19433;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0b0b0b;
  --bg-2: #101010;
  --surface: #141414;
  --surface-2: #1a1a1a;
  --border: #232323;
  --border-strong: #333333;
  --text: #f5f5f5;
  --text-2: #cfcfcf;
  --muted: #8f8f8f;
  --accent: #f2a7c3; /* magnolia petal */
  --accent-soft: rgba(242, 167, 195, 0.12);
  --glow: rgba(242, 167, 195, 0.16);
  --glow-2: rgba(120, 160, 120, 0.06);
  --ok: #4ade80;
  --ok-bg: rgba(74, 222, 128, 0.12);
  --danger: #f28b82;
  --danger-bg: rgba(242, 139, 130, 0.1);
  --btn-bg: #161616;
  --btn-fg: #f5f5f5;
  --btn-border: #333333;
  --btn-hover-border: #f2a7c3;
  --mock-surface: #141414;
  --mock-border: #232323;
  --veil: rgba(11, 11, 11, 0.72);
  --c1: #e58bb0; --c2: #62c58a; --c3: #d3a46f; --c4: #b98bd6;
  --c5: #9bc486; --c6: #eb9a84; --c7: #86a9c6; --c8: #d8bb5a;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Prompt", "IBM Plex Sans Thai", "Noto Sans Thai", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-weight: 400;
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.25s ease, color 0.25s ease;
}
body::before { /* the warm bloom rising from the lower right + soft vignette */
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(900px 600px at 92% 108%, var(--glow), transparent 70%),
    radial-gradient(700px 500px at -8% 0%, var(--glow-2), transparent 70%),
    radial-gradient(120% 120% at 50% 50%, transparent 60%, rgba(0, 0, 0, 0.08) 100%);
}
[hidden] { display: none !important; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
a { color: inherit; }
h1, h2, h3, p { margin: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 8px; }
::selection { background: var(--accent-soft); }

.mono, .eyebrow, .label, .chip, code { font-family: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace; }
.label {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.logo { width: 22px; height: 22px; color: var(--accent); flex: none; }

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 40px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.15s ease, background-color 0.15s ease, transform 0.15s ease, opacity 0.15s ease;
}
.btn:hover { border-color: var(--text-2); background: var(--surface-2); }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }
.btn.primary { background: var(--btn-bg); color: var(--btn-fg); border-color: var(--btn-border); }
.btn.primary:hover { border-color: var(--btn-hover-border); background: var(--btn-bg); }
.btn.primary .arrow { transition: transform 0.15s ease; }
.btn.primary:hover .arrow { transform: translate(2px, -2px); }
.btn.sm { height: 32px; padding: 0 13px; font-size: 13px; }
.btn.danger { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, var(--border)); }
.btn.danger:hover { background: var(--danger-bg); border-color: var(--danger); }
.btn.icon { width: 36px; height: 36px; padding: 0; }
.btn .spin { width: 14px; height: 14px; border-radius: 50%; border: 2px solid currentColor; border-right-color: transparent; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Fields ──────────────────────────────────────────────────────────────── */
.field { display: grid; gap: 6px; }
.field > span { font-size: 12px; color: var(--muted); }
input[type="text"], input[type="password"], input[type="number"], input[type="datetime-local"], select, textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  min-height: 42px;
  transition: border-color 0.15s ease, background-color 0.25s ease;
}
textarea { resize: vertical; min-height: 84px; font-family: "JetBrains Mono", ui-monospace, monospace; font-size: 14px; }
input:hover, select:hover, textarea:hover { border-color: var(--border-strong); }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
input::placeholder, textarea::placeholder { color: color-mix(in srgb, var(--muted) 70%, transparent); }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--text-2); cursor: pointer; }
.check input { margin-top: 4px; accent-color: var(--accent); }

/* ── Chips ───────────────────────────────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 22px;
  padding: 0 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.chip.ok { color: var(--ok); background: var(--ok-bg); border-color: color-mix(in srgb, var(--ok) 28%, transparent); }
.chip.bad { color: var(--danger); background: var(--danger-bg); border-color: color-mix(in srgb, var(--danger) 28%, transparent); }
.chip.dot::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.chip.pulse::before { animation: pulse 1.6s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: 0.25; } }

/* ── Landing ─────────────────────────────────────────────────────────────── */
.landing {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  padding: clamp(28px, 6vh, 56px) clamp(24px, 9vw, 200px);
}
.landing .top-right { position: absolute; top: 20px; right: 24px; z-index: 5; }
.hero { position: relative; z-index: 2; width: min(620px, 100%); padding-top: clamp(0px, 4vh, 36px); }
.hero h1 {
  margin-top: 22px;
  font-size: clamp(40px, 5.4vw, 64px);
  line-height: 1.08;
  font-weight: 400;
  letter-spacing: -0.015em;
}
.hero .subline { margin-top: 20px; max-width: 460px; font-size: 18px; line-height: 1.6; color: var(--muted); }
.login { margin-top: 34px; display: grid; gap: 12px; width: min(380px, 100%); }
.login .row { display: grid; gap: 10px; }
.login .cta-row { display: flex; align-items: center; gap: 14px; margin-top: 4px; }
.login .error { min-height: 20px; font-size: 13px; color: var(--danger); }
.fine { margin-top: 18px; font-size: 12.5px; color: var(--muted); max-width: 400px; }

.mock-stage {
  position: absolute;
  right: -4%;
  bottom: -2%;
  width: min(880px, 70vw);
  height: min(560px, 72vh);
  z-index: 1;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to top left, #000 38%, transparent 92%);
  mask-image: linear-gradient(to top left, #000 38%, transparent 92%);
}

.mock {
  position: absolute;
  right: -6%;
  bottom: 14%;
  width: 760px;
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 14px;
  padding: 14px;
  background: var(--mock-surface);
  border: 1px solid var(--mock-border);
  border-radius: 14px;
  transform-origin: 100% 100%;
  transform: perspective(2000px) rotateX(48deg) rotateZ(-12deg);
}
.mock .side { display: grid; gap: 8px; align-content: start; padding: 4px; }
.mock .side b { display: flex; align-items: center; gap: 8px; font-weight: 400; margin-bottom: 10px; }
.mock .side i { display: block; height: 28px; border-radius: 8px; background: var(--surface-2); border: 1px solid var(--border); }
.mock .side i.on { background: var(--accent-soft); border-color: transparent; }
.mock .stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.mock .stat { padding: 14px; border: 1px solid var(--mock-border); border-radius: 10px; background: var(--bg-2); }
.mock .stat .n { font-size: 34px; line-height: 1.1; margin: 6px 0 8px; }
.mock .code { margin-top: 12px; padding: 14px; border: 1px solid var(--mock-border); border-radius: 10px; background: var(--bg-2); font-family: "JetBrains Mono", monospace; font-size: 12px; line-height: 1.8; color: var(--muted); }
.mock .code .t { color: var(--text-2); }
.mock .code .ok { color: var(--ok); }

/* ── App shell ───────────────────────────────────────────────────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px clamp(16px, 4vw, 40px);
  border-bottom: 1px solid var(--border);
  background: var(--veil);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.brand { display: flex; align-items: center; gap: 10px; font-size: 15px; }
.brand small { display: block; font-size: 11px; color: var(--muted); line-height: 1.1; }
.nav { display: flex; gap: 4px; margin-left: 18px; }
.nav button {
  height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  cursor: pointer;
}
.nav button:hover { color: var(--text); }
.nav button[aria-selected="true"] { color: var(--text); background: var(--surface); border-color: var(--border); }
.nav .badge { margin-left: 6px; }
.topbar .spacer { flex: 1; }
.topbar .who { font-family: "JetBrains Mono", monospace; font-size: 12px; color: var(--muted); background: transparent; border: 1px solid transparent; border-radius: 999px; height: 30px; padding: 0 12px; cursor: pointer; }
.topbar .who:hover { color: var(--text); border-color: var(--border); background: var(--surface); }

main.app { max-width: 1120px; margin: 0 auto; padding: clamp(20px, 4vw, 40px) clamp(16px, 4vw, 40px) 120px; }
.view-head { margin-bottom: 22px; }
.view-head h2 { font-size: clamp(26px, 3.4vw, 36px); line-height: 1.1; font-weight: 400; letter-spacing: -0.01em; margin-top: 10px; }
.view-head p { margin-top: 8px; color: var(--muted); max-width: 640px; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.card + .card, .stack > * + * { margin-top: 16px; }
.card h3 { font-size: 16px; font-weight: 400; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 16px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; }
.stat .n { font-size: 38px; line-height: 1.1; margin: 8px 0 10px; letter-spacing: -0.02em; }
.stat .foot { display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: 12px; }

.search-row { display: grid; grid-template-columns: 1fr auto; gap: 14px; align-items: end; }
.hint { margin-top: 10px; font-size: 12.5px; color: var(--muted); }
.table .hint { margin-top: 0; }
#plan-results { margin-top: 16px; }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 20px; }

.tabs { display: inline-flex; gap: 4px; padding: 3px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px; }
.tabs button { height: 30px; padding: 0 14px; border-radius: 999px; border: 0; background: transparent; color: var(--muted); font-size: 13px; cursor: pointer; }
.tabs button[aria-selected="true"] { background: var(--surface); color: var(--text); box-shadow: inset 0 0 0 1px var(--border); }

/* course accordion */
details.course { border: 1px solid var(--border); border-radius: 12px; background: var(--surface); overflow: hidden; }
details.course + details.course { margin-top: 10px; }
details.course > summary { list-style: none; display: flex; gap: 12px; align-items: center; padding: 14px 16px; cursor: pointer; }
details.course > summary::-webkit-details-marker { display: none; }
details.course > summary .name { flex: 1; min-width: 0; }
details.course > summary .name b { font-weight: 400; font-size: 15px; }
details.course > summary .name div { font-size: 12.5px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
details.course > summary .caret { transition: transform 0.2s ease; color: var(--muted); }
details.course[open] > summary .caret { transform: rotate(90deg); }
.sec-list { border-top: 1px solid var(--border); }
.sec { display: grid; grid-template-columns: 54px 1fr auto; gap: 14px; align-items: center; padding: 12px 16px; }
.sec + .sec { border-top: 1px solid var(--border); }
.sec .no { font-family: "JetBrains Mono", monospace; font-size: 13px; color: var(--text-2); }
.sec .meta { font-size: 12.5px; color: var(--muted); }
.sec .slots { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.sec .side { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.sec.clash { opacity: 0.6; }

/* combos */
.combos { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 14px; }
.combo { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.combo header { display: flex; justify-content: space-between; align-items: center; }
.combo ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.combo li { display: grid; grid-template-columns: 10px 1fr auto; gap: 10px; align-items: baseline; font-size: 13.5px; }
.combo li .sw { width: 8px; height: 8px; border-radius: 50%; transform: translateY(-1px); }
.combo li small { color: var(--muted); font-size: 12px; display: block; }
.combo footer { display: flex; gap: 8px; flex-wrap: wrap; margin-top: auto; padding-top: 4px; }

.notice { padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text-2); font-size: 13.5px; }
.notice.bad { border-color: color-mix(in srgb, var(--danger) 35%, var(--border)); background: var(--danger-bg); }
.empty { padding: 40px 16px; text-align: center; color: var(--muted); border: 1px dashed var(--border-strong); border-radius: 12px; }

/* timetable — days are rows, time runs across the columns */
.tt-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.tt { display: grid; }
.tt .h { padding: 6px 2px; text-align: center; font-family: "JetBrains Mono", monospace; font-size: 10.5px; color: var(--muted); }
.tt .h span { white-space: nowrap; }
.tt .h + .h { border-left: 1px solid var(--border); }
.tt .day { display: flex; align-items: center; justify-content: center; font-size: 12px; color: var(--muted); border-top: 1px solid var(--border); }
.tt .track { position: relative; border-top: 1px solid var(--border); background-image: linear-gradient(to right, var(--border) 1px, transparent 1px); }
.tt .blk {
  position: absolute;
  padding: 4px 7px;
  border-radius: 8px;
  font-size: 11.5px;
  line-height: 1.25;
  overflow: hidden;
  color: var(--text);
  background: color-mix(in srgb, var(--c) 16%, var(--surface));
  border: 1px solid color-mix(in srgb, var(--c) 55%, transparent);
  border-left-width: 3px;
}
.tt .blk b { font-weight: 400; font-family: "JetBrains Mono", monospace; display: block; font-size: 11px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tt .blk > span, .tt .blk > div { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tt .blk > div { font-size: 11px; color: var(--muted); }
.tt .blk.preview { border-style: dashed; background: color-mix(in srgb, var(--c) 26%, var(--surface)); }
.tt .blk.base { opacity: 0.8; }

/* exam card — midterm / final / PreExam kept in separate blocks */
.exam-group + .exam-group { margin-top: 20px; }
.exam-group-head { display: flex; align-items: center; gap: 8px; margin: 0 0 6px; font-size: 14px; font-weight: 400; }
.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th { text-align: left; font-weight: 400; padding: 10px 12px; }
.table td { padding: 12px; border-top: 1px solid var(--border); vertical-align: top; }
.table tr.clash td { background: var(--danger-bg); }
.table .chip + .chip { margin-left: 6px; }
.table-wrap { overflow-x: auto; }

/* auto-enrol */
.grid-2 { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.target { border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; background: var(--surface); }
.target + .target { margin-top: 10px; }
.target-head { display: flex; gap: 10px; align-items: center; justify-content: space-between; }
.target-head b { font-weight: 400; }
.target-head .nm { color: var(--muted); font-size: 12.5px; }
.pick { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.pick button { height: 28px; padding: 0 10px; border-radius: 999px; border: 1px solid var(--border-strong); background: transparent; color: var(--text-2); font-family: "JetBrains Mono", monospace; font-size: 12px; cursor: pointer; }
.pick button[aria-pressed="true"] { background: var(--text); color: var(--bg); border-color: var(--text); }
.pick button.full { border-style: dashed; color: var(--muted); }
.opts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 16px; }
.log-label { margin-top: 22px; }
.log { margin-top: 10px; max-height: 280px; overflow: auto; padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg-2); font-family: "JetBrains Mono", monospace; font-size: 12px; line-height: 1.75; }
.log .l { display: grid; grid-template-columns: 64px 1fr; gap: 10px; color: var(--muted); }
.log .l.ok .m { color: var(--ok); }
.log .l.warn .m { color: var(--text-2); }
.log .l.error .m { color: var(--danger); }
.progress { height: 6px; border-radius: 999px; background: var(--surface-2); overflow: hidden; border: 1px solid var(--border); }
.progress i { display: block; height: 100%; background: linear-gradient(90deg, color-mix(in srgb, var(--ok) 70%, transparent), var(--ok)); transition: width 0.4s ease; }

/* profile dialog */
dialog.profile-dlg { width: min(760px, calc(100vw - 32px)); }
.profile { max-height: min(64vh, 560px); overflow: auto; }
.profile-group + .profile-group { margin-top: 18px; }
.profile-group-head { font-size: 13px; font-weight: 400; color: var(--muted); margin-bottom: 8px; }
.profile-rows { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.profile-row { display: grid; grid-template-columns: minmax(110px, 34%) 1fr; gap: 12px; padding: 9px 12px; font-size: 14px; }
.profile-row + .profile-row, .profile-sub + .profile-row, .profile-row + .profile-sub { border-top: 1px solid var(--border); }
.profile-row .label { color: var(--muted); }
.profile-row .value { overflow-wrap: anywhere; }
.profile-sub { padding: 9px 12px; background: var(--surface-2); color: var(--text-2); font-size: 12.5px; }

/* modal + toast */
dialog { border: 1px solid var(--border-strong); border-radius: 14px; background: var(--surface); color: var(--text); padding: 0; width: min(520px, calc(100vw - 32px)); }
dialog.wide { width: min(980px, calc(100vw - 32px)); }
dialog::backdrop { background: rgba(0, 0, 0, 0.5); backdrop-filter: blur(3px); }
.modal-in { padding: 22px; display: grid; gap: 16px; }
.modal-in h3 { font-size: 18px; font-weight: 400; }
.modal-in .foot { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.steps li { display: grid; grid-template-columns: 22px 1fr; gap: 10px; align-items: baseline; font-size: 14px; }
.steps li small { display: block; color: var(--muted); }

#toasts { position: fixed; z-index: 100; right: 16px; bottom: 16px; display: grid; gap: 8px; max-width: min(380px, calc(100vw - 32px)); }
.toast { padding: 12px 14px; border-radius: 10px; border: 1px solid var(--border-strong); background: var(--surface); font-size: 14px; animation: rise 0.2s ease; }
.toast.ok { border-color: color-mix(in srgb, var(--ok) 45%, var(--border)); }
.toast.bad { border-color: color-mix(in srgb, var(--danger) 55%, var(--border)); }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } }

.skeleton { height: 64px; border-radius: 12px; background: linear-gradient(90deg, var(--surface), var(--surface-2), var(--surface)); background-size: 200% 100%; animation: shimmer 1.4s linear infinite; border: 1px solid var(--border); }
.skeleton + .skeleton { margin-top: 10px; }
@keyframes shimmer { to { background-position: -200% 0; } }

.theme-toggle { width: 36px; height: 36px; border-radius: 999px; border: 1px solid var(--border-strong); background: transparent; color: var(--text); cursor: pointer; display: grid; place-items: center; }
.theme-toggle:hover { background: var(--surface-2); }
.theme-toggle svg { width: 16px; height: 16px; }
:root[data-theme="dark"] .sun, :root:not([data-theme="dark"]) .moon { display: none; }

@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
  .opts { grid-template-columns: 1fr; }
  .mock-stage { opacity: 0.55; width: 120vw; right: -40%; }
}
@media (max-width: 640px) {
  .stats { grid-template-columns: 1fr; }
  .search-row { grid-template-columns: 1fr; }
  .nav { margin-left: 0; order: 3; width: 100%; overflow-x: auto; }
  .topbar { flex-wrap: wrap; gap: 10px; }
  .topbar .who { font-size: 11px; padding: 0 8px; }
  .landing { padding: 28px 22px 200px; }
  .sec { grid-template-columns: 44px 1fr; }
  .sec .side { grid-column: 1 / -1; flex-direction: row; align-items: center; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}