/* ===================================================================
   MIR·AI Deadlines — design system
   =================================================================== */

:root {
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI",
          Roboto, "Helvetica Neue", "Pretendard", sans-serif;
  --mono: "SF Mono", ui-monospace, "Cascadia Code", Menlo, monospace;

  --bg: #fafafc;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-solid: #ffffff;
  --border: rgba(15, 15, 35, 0.08);
  --border-strong: rgba(15, 15, 35, 0.14);
  --text: #0f0f23;
  --text-2: #5c5c72;
  --text-3: #9494a6;
  --shadow: 0 1px 2px rgba(15,15,35,.04), 0 8px 24px rgba(15,15,35,.06);
  --shadow-lift: 0 2px 4px rgba(15,15,35,.05), 0 18px 44px rgba(15,15,35,.12);

  --accent: #5b5bf0;
  --accent-2: #b44df0;
  --danger: #e5484d;

  --c-music: #8b5cf6;
  --c-audio: #0aa8a8;
  --c-multimodal: #e8871e;
  --c-ai: #3b82f6;
  --c-nlp: #10a86a;
  --c-hci: #e0447c;
  --c-vision: #6366f1;
  --c-graphics: #d1495b;

  --radius: 20px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme="dark"] {
  --bg: #0a0a14;
  --surface: rgba(22, 22, 38, 0.66);
  --surface-solid: #14141f;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f2f2f8;
  --text-2: #a3a3b8;
  --text-3: #6b6b80;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.35);
  --shadow-lift: 0 2px 4px rgba(0,0,0,.4), 0 18px 44px rgba(0,0,0,.5);

  --c-music: #a78bfa;
  --c-audio: #2dd4bf;
  --c-multimodal: #fbbf24;
  --c-ai: #60a5fa;
  --c-nlp: #34d399;
  --c-hci: #f472b6;
  --c-vision: #818cf8;
  --c-graphics: #f47272;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background .4s var(--ease), color .4s var(--ease);
}

::selection { background: color-mix(in srgb, var(--accent) 25%, transparent); }

/* ---------- aurora background ---------- */
.aurora {
  position: fixed; inset: -20%;
  z-index: -1; filter: blur(90px);
  opacity: .5; pointer-events: none;
}
[data-theme="dark"] .aurora { opacity: .32; }
.blob { position: absolute; border-radius: 50%; }
.b1 { width: 44vw; height: 44vw; left: -6vw; top: -8vw;
      background: radial-gradient(circle, #8b5cf6, transparent 65%);
      animation: drift1 26s ease-in-out infinite alternate; }
.b2 { width: 38vw; height: 38vw; right: -4vw; top: 2vw;
      background: radial-gradient(circle, #22d3ee, transparent 65%);
      animation: drift2 32s ease-in-out infinite alternate; }
.b3 { width: 30vw; height: 30vw; left: 34vw; top: 16vw;
      background: radial-gradient(circle, #f472b6, transparent 65%);
      animation: drift3 38s ease-in-out infinite alternate; }
@keyframes drift1 { to { transform: translate(9vw, 7vw) scale(1.12); } }
@keyframes drift2 { to { transform: translate(-7vw, 9vw) scale(0.92); } }
@keyframes drift3 { to { transform: translate(6vw, -5vw) scale(1.18); } }

@media (prefers-reduced-motion: reduce) {
  .blob { animation: none !important; }
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(20px) saturate(1.6);
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  background: color-mix(in srgb, var(--bg) 62%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color .3s;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.brand-mark {
  width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
}
.brand-mark svg { width: 17px; height: 17px; }
.brand-name { font-weight: 700; font-size: 16px; letter-spacing: -.02em; }
.brand-name em { font-style: normal; font-weight: 500; color: var(--text-2); }
.brand-kanji {
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic",
               "Apple SD Gothic Neo", "Noto Sans CJK KR", sans-serif;
  font-size: 13px; font-weight: 600; letter-spacing: .04em; cursor: help;
  padding-left: 9px; margin-left: 8px; border-left: 1px solid var(--border-strong);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
@media (max-width: 640px) { .brand-kanji { display: none; } }

.nav-actions { display: flex; align-items: center; gap: 10px; }

.search {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 8px 12px; width: 240px;
  transition: border-color .2s, box-shadow .2s, width .3s var(--ease);
}
.search:focus-within {
  border-color: var(--accent); width: 300px;
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 14%, transparent);
}
.search svg { width: 15px; height: 15px; color: var(--text-3); flex-shrink: 0; }
.search input {
  border: 0; outline: 0; background: transparent; width: 100%;
  font: 500 14px var(--font); color: var(--text);
}
.search input::placeholder { color: var(--text-3); }
.search kbd {
  font: 600 11px var(--mono); color: var(--text-3);
  border: 1px solid var(--border-strong); border-radius: 5px;
  padding: 1px 6px 2px;
}

.icon-btn {
  width: 38px; height: 38px; border-radius: 12px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text-2);
  display: grid; place-items: center; transition: all .2s;
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); transform: translateY(-1px); }
.icon-btn svg { width: 18px; height: 18px; }
[data-theme="dark"] .ico-moon { display: none; }
[data-theme="light"] .ico-sun { display: none; }

/* ---------- hero ---------- */
.hero {
  max-width: 1200px; margin: 0 auto;
  padding: 84px 24px 40px; text-align: center;
}
/* 未来 · 미래 · mirai — the wordplay lockup above the eyebrow */
.mirai {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  margin-bottom: 18px; font-size: 15px; font-weight: 600;
  letter-spacing: .02em; line-height: 1;
}
.mirai .hanja, .mirai .hangul {
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic",
               "Apple SD Gothic Neo", "Noto Sans CJK KR", sans-serif;
  font-size: 16px; letter-spacing: .06em;
  background: linear-gradient(135deg, var(--accent), var(--accent-2) 60%, #f06292);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.mirai .romaji { color: var(--text-2); font-style: italic; }
.mirai .mean { color: var(--text-3); font-weight: 500; }
.mirai .sep { color: var(--text-3); opacity: .55; font-weight: 400; }

.eyebrow {
  display: inline-block; font: 600 13px/1 var(--font); letter-spacing: .14em;
  text-transform: uppercase; color: var(--accent);
  background: color-mix(in srgb, var(--accent) 9%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  padding: 8px 16px; border-radius: 999px; margin-bottom: 28px;
}
.hero h1 {
  font-size: clamp(48px, 9vw, 96px);
  font-weight: 800; letter-spacing: -.045em; line-height: 1.02;
}
.hero h1 .grad {
  background: linear-gradient(92deg, var(--accent), var(--accent-2) 55%, #f06292);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.sub {
  max-width: 620px; margin: 24px auto 0;
  font-size: clamp(16px, 2.2vw, 19px); line-height: 1.6; color: var(--text-2);
  text-wrap: balance;
}

.hero-stats {
  display: flex; justify-content: center; gap: 40px; margin-top: 44px; flex-wrap: wrap;
}
.stat { text-align: center; }
.stat b {
  display: block; font-size: 32px; font-weight: 800; letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
}
.stat span { font-size: 13px; color: var(--text-3); font-weight: 500; }

/* featured next-deadline card */
.featured { max-width: 680px; margin: 48px auto 0; }
.featured-card {
  position: relative; overflow: hidden; text-align: left;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 24px; padding: 28px 32px;
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lift);
}
.featured-card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), #f06292);
}
.featured-top {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 12px; flex-wrap: wrap;
}
.featured-label {
  font: 700 11px var(--font); letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent);
}
.featured-name { font-size: 26px; font-weight: 800; letter-spacing: -.03em; margin-top: 6px; }
.featured-meta { color: var(--text-2); font-size: 14px; margin-top: 6px; }
.featured-count {
  display: flex; gap: 14px; margin-top: 20px;
}
.tick {
  flex: 1; text-align: center; background: color-mix(in srgb, var(--text) 4%, transparent);
  border: 1px solid var(--border); border-radius: 14px; padding: 12px 6px 10px;
}
.tick b {
  display: block; font-size: clamp(24px, 4.5vw, 34px); font-weight: 800;
  font-variant-numeric: tabular-nums; letter-spacing: -.02em;
}
.tick span {
  font-size: 10px; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--text-3);
}

/* ---------- toolbar ---------- */
.board { max-width: 1200px; margin: 0 auto; padding: 40px 24px 80px; }
.toolbar {
  position: sticky; top: 66px; z-index: 40;
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  flex-wrap: wrap; padding: 10px 0; margin-bottom: 26px;
}
.pills {
  flex: 1 1 auto;
  display: flex; flex-wrap: wrap; gap: 6px; padding: 5px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 20px; backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
}
.pill {
  border: 0; cursor: pointer; white-space: nowrap;
  font: 600 13px var(--font); letter-spacing: -.01em;
  color: var(--text-2); background: transparent;
  padding: 9px 14px; border-radius: 999px;
  transition: all .25s var(--ease);
  display: flex; align-items: center; gap: 7px;
}
.pill:hover { color: var(--text); }
.pill .n {
  font: 700 11px var(--mono); color: var(--text-3);
  background: color-mix(in srgb, var(--text) 6%, transparent);
  padding: 2px 7px; border-radius: 999px; transition: all .25s;
}
.pill.active { background: var(--text); color: var(--bg); box-shadow: var(--shadow); }
.pill.active .n { background: color-mix(in srgb, var(--bg) 25%, transparent); color: var(--bg); }
.pill .swatch { width: 8px; height: 8px; border-radius: 50%; }

.switch { display: flex; align-items: center; gap: 9px; cursor: pointer; user-select: none; }
.switch input { position: absolute; opacity: 0; }
.switch .track {
  width: 40px; height: 24px; border-radius: 999px; position: relative;
  background: color-mix(in srgb, var(--text) 14%, transparent);
  transition: background .25s;
}
.switch .track::after {
  content: ""; position: absolute; top: 3px; left: 3px;
  width: 18px; height: 18px; border-radius: 50%; background: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,.25);
  transition: transform .25s var(--ease);
}
.switch input:checked + .track { background: var(--accent); }
.switch input:checked + .track::after { transform: translateX(16px); }
.switch-label { font: 600 13.5px var(--font); color: var(--text-2); }

/* ---------- grid & cards ---------- */
.grid {
  display: grid; gap: 18px;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
}
.grid-past { margin-top: 18px; }
.grid-past .card { opacity: .62; }
.grid-past .card:hover { opacity: 1; }

.card {
  position: relative; display: flex; flex-direction: column; gap: 14px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 22px 18px;
  overflow: hidden; /* clip the left accent bar to the card's rounded corners */
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s, opacity .3s;
  animation: card-in .55s var(--ease) both;
}
@keyframes card-in {
  from { opacity: 0; transform: translateY(16px) scale(.985); }
  to   { opacity: 1; transform: none; }
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lift);
  border-color: color-mix(in srgb, var(--cat) 45%, var(--border));
}
.card::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 3px;
  border-radius: 3px 0 0 3px; background: var(--cat); opacity: .85;
}
/* cursor spotlight */
.card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%),
              color-mix(in srgb, var(--cat) 7%, transparent), transparent 42%);
  opacity: 0; transition: opacity .3s; pointer-events: none;
}
.card:hover::after { opacity: 1; }

.card-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; }
.card-title { font-size: 21px; font-weight: 800; letter-spacing: -.025em; }
.card-title .yr { color: var(--text-3); font-weight: 600; margin-left: 6px; }
.card-title .kind {
  display: inline-block; vertical-align: middle; margin-left: 8px;
  font: 700 9.5px var(--font); letter-spacing: .1em; text-transform: uppercase;
  color: var(--cat); background: color-mix(in srgb, var(--cat) 12%, transparent);
  border: 1px solid color-mix(in srgb, var(--cat) 30%, transparent);
  padding: 3px 7px; border-radius: 6px; position: relative; top: -1px;
}
.card-full { font-size: 12.5px; line-height: 1.45; color: var(--text-3); margin-top: 3px; }

.badge {
  flex-shrink: 0; display: inline-flex; align-items: center; gap: 5px;
  font: 700 10.5px var(--font); letter-spacing: .06em; text-transform: uppercase;
  padding: 5px 10px; border-radius: 999px;
}
.badge.confirmed {
  color: #0f8a4d; background: rgba(35, 195, 120, .12); border: 1px solid rgba(35, 195, 120, .3);
}
[data-theme="dark"] .badge.confirmed { color: #4ade80; }
.badge.estimated {
  color: var(--text-2); background: transparent; border: 1px dashed var(--border-strong);
}
.badge.passed { color: var(--text-3); background: color-mix(in srgb, var(--text) 5%, transparent); border: 1px solid var(--border); }

.card-meta { display: flex; flex-direction: column; gap: 6px; font-size: 13.5px; color: var(--text-2); }
.card-meta .row { display: flex; align-items: center; gap: 8px; }
.card-meta svg { width: 14px; height: 14px; color: var(--text-3); flex-shrink: 0; }

.deadline-box {
  background: color-mix(in srgb, var(--text) 3.5%, transparent);
  border: 1px solid var(--border); border-radius: 14px; padding: 13px 15px;
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
}
.deadline-box .dl-when { min-width: 0; }
.deadline-box .dl-label {
  font: 700 10px var(--font); letter-spacing: .12em; text-transform: uppercase; color: var(--text-3);
}
.deadline-box .dl-date { font-size: 14.5px; font-weight: 700; margin-top: 3px; letter-spacing: -.01em; }
.deadline-box .dl-local { font-size: 11.5px; color: var(--text-3); margin-top: 2px; }
.countdown {
  font: 800 17px var(--mono); font-variant-numeric: tabular-nums;
  letter-spacing: -.02em; white-space: nowrap; text-align: right;
}
.countdown small { display: block; font: 600 10px var(--font); letter-spacing: .1em; text-transform: uppercase; color: var(--text-3); }
.countdown.soon { color: var(--danger); }
.countdown.past-txt { color: var(--text-3); font-weight: 700; }
.countdown.est-txt { color: var(--text-3); font-weight: 700; font-size: 14px; font-style: italic; }

/* estimated deadline box: visually softer + dashed to read as "not a firm date" */
.deadline-box.est {
  background: transparent;
  border-style: dashed;
  border-color: var(--border-strong);
}
.deadline-box.est .dl-date { color: var(--text-2); font-weight: 700; }
.deadline-box.est .dl-local { font-style: italic; }

.card-foot { display: flex; justify-content: space-between; align-items: center; margin-top: auto; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  font: 600 11px var(--font); letter-spacing: .02em;
  color: var(--cat); background: color-mix(in srgb, var(--cat) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--cat) 25%, transparent);
  padding: 4px 10px; border-radius: 999px;
}
.card-links { display: flex; gap: 4px; }
.mini-btn {
  display: inline-flex; align-items: center; gap: 5px; text-decoration: none; cursor: pointer;
  font: 600 12px var(--font); color: var(--text-2);
  border: 1px solid transparent; border-radius: 9px; padding: 6px 10px;
  transition: all .2s; background: transparent;
}
.mini-btn:hover { color: var(--text); background: color-mix(in srgb, var(--text) 6%, transparent); }
.mini-btn svg { width: 13px; height: 13px; }

.note { font-size: 11.5px; color: var(--text-3); font-style: italic; }

/* ---------- past divider / empty ---------- */
.past-divider {
  display: flex; align-items: center; gap: 16px; margin: 44px 0 8px;
  color: var(--text-3); font: 700 12px var(--font); letter-spacing: .14em; text-transform: uppercase;
}
.past-divider::before, .past-divider::after {
  content: ""; flex: 1; height: 1px; background: var(--border-strong);
}
.empty { text-align: center; color: var(--text-3); padding: 60px 0; font-size: 15px; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 32px 24px 44px; }
.footer-inner { max-width: 1200px; margin: 0 auto; text-align: center; font-size: 13px; color: var(--text-2); }
.footer .muted { color: var(--text-3); margin-top: 6px; font-size: 12px; }
.footer .brand-story { margin-top: 14px; font-size: 12.5px; color: var(--text-2); }
.footer .brand-story strong {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent; font-weight: 700;
}
.footer .brand-story em { font-style: italic; color: var(--text); }
.footer .brand-story .cjk {
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic",
               "Apple SD Gothic Neo", "Noto Sans CJK KR", sans-serif;
  color: var(--text); letter-spacing: .04em;
}
.legend { display: inline-flex; align-items: center; gap: 5px; margin-left: 8px; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot.confirmed { background: #23c378; }
.dot.estimated { border: 1.5px dashed var(--text-3); }

/* ---------- hero entrance (pure CSS, staggered) ---------- */
.reveal { animation: rise .9s var(--ease) both; }
.hero .reveal:nth-child(2) { animation-delay: .08s; }
.hero .reveal:nth-child(3) { animation-delay: .16s; }
.hero .reveal:nth-child(4) { animation-delay: .24s; }
.hero .reveal:nth-child(5) { animation-delay: .32s; }
@keyframes rise {
  from { opacity: 0; transform: translateY(22px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- responsive ---------- */
.card-head > div, .dl-when { min-width: 0; }

@media (max-width: 640px) {
  .search { width: 140px; }
  .search:focus-within { width: 170px; }
  .search kbd { display: none; }
  .brand-name em { display: none; }
  .nav-inner { padding: 12px 16px; }
  .hero { padding: 56px 16px 32px; }
  .hero-stats { gap: 26px; }
  .board { padding: 28px 16px 64px; }
  .toolbar { top: 58px; }
  .featured-card { padding: 22px 18px; }
  .grid { grid-template-columns: 1fr; }
  .card { padding: 18px 18px 15px; }
  .deadline-box { flex-wrap: wrap; }
  .countdown { text-align: left; }
}