:root {
  --bg: #0b0f1a;
  --bg2: #0f172a;
  --panel: rgba(20, 27, 45, 0.72);
  --panel-br: rgba(148, 163, 184, 0.16);
  --text: #e5eaf5;
  --muted: #8fa0bd;
  --accent: #6366f1;
  --field-bg: rgba(9, 14, 26, 0.7);
}
.light-theme {
  --bg: #eef1f8;
  --bg2: #e2e8f5;
  --panel: rgba(255, 255, 255, 0.86);
  --panel-br: rgba(30, 41, 59, 0.1);
  --text: #1a2436;
  --muted: #5a6a86;
  --field-bg: rgba(255, 255, 255, 0.9);
}

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

body {
  font-family: 'Sora', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.shell {
  position: relative;
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 20px 60px;
}

.aurora {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 50% at 12% 0%, rgba(99, 102, 241, 0.28), transparent 60%),
    radial-gradient(55% 45% at 92% 8%, rgba(244, 114, 182, 0.2), transparent 60%),
    radial-gradient(70% 60% at 50% 100%, rgba(52, 211, 153, 0.14), transparent 60%),
    linear-gradient(180deg, var(--bg), var(--bg2));
}

/* HERO */
.hero { margin-bottom: 22px; }
.hero-top {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 16px; flex-wrap: wrap;
}
.brand { display: flex; gap: 14px; align-items: center; }
.berry {
  font-size: 40px; line-height: 1;
  animation: float 4s ease-in-out infinite;
}
@keyframes float { 0%,100% { transform: translateY(0) rotate(-4deg);} 50% { transform: translateY(-6px) rotate(4deg);} }
.hero h1 {
  font-weight: 800; font-size: clamp(24px, 5vw, 38px);
  letter-spacing: -0.03em; line-height: 1.05;
}
.hero .sub { color: var(--muted); font-size: 13.5px; font-weight: 200; margin-top: 4px; max-width: 460px; }

.hero-controls { display: flex; gap: 10px; align-items: center; }
.datebadge {
  display: flex; align-items: center; gap: 8px;
  background: var(--panel); border: 1px solid var(--panel-br);
  border-radius: 12px; padding: 8px 10px 8px 14px;
  font-size: 12px; color: var(--muted); font-family: 'IBM Plex Mono', monospace;
}
.todaybtn {
  background: var(--accent); color: #fff; border: none;
  border-radius: 8px; padding: 5px 10px; font-size: 11px; font-weight: 600;
  cursor: pointer; font-family: 'Sora', sans-serif;
}
.iconbtn {
  width: 40px; height: 40px; border-radius: 12px;
  background: var(--panel); border: 1px solid var(--panel-br);
  color: var(--text); font-size: 18px; cursor: pointer;
}

.cheer {
  margin-top: 14px; display: inline-block;
  background: rgba(52, 211, 153, 0.14); color: #34d399;
  border: 1px solid rgba(52, 211, 153, 0.35);
  padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 600;
  animation: pop 0.4s ease;
}
.warn {
  margin-top: 10px; display: inline-block;
  background: rgba(251, 113, 133, 0.14); color: #fb7185;
  border: 1px solid rgba(251, 113, 133, 0.35);
  padding: 6px 14px; border-radius: 10px; font-size: 12.5px; font-weight: 500;
}
@keyframes pop { 0% { transform: scale(0.85); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }

.toolbar { margin-bottom: 16px; }

/* CARDS */
.cards-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-bottom: 18px;
}
@media (max-width: 760px) { .cards-grid { grid-template-columns: 1fr; } }

.card {
  background: var(--panel);
  backdrop-filter: blur(14px);
  border: 1px solid var(--panel-br);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 20px 50px -30px rgba(0,0,0,0.6);
}
.card-head { margin-bottom: 16px; }
.card-head h2 { font-size: 18px; font-weight: 600; letter-spacing: -0.02em; }
.card-kicker {
  display: inline-block; font-family: 'IBM Plex Mono', monospace;
  font-size: 10.5px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 6px;
}
.card-kicker.pink { color: #f472b6; }
.card-kicker.amber { color: #fbbf24; }
.card-kicker.green { color: #34d399; }

.grid-inputs {
  display: grid; grid-template-columns: 1fr 1.4fr 1fr; gap: 10px; margin-bottom: 16px;
}
.grid-inputs.two { grid-template-columns: 1fr 1fr; align-items: end; }
.grid-inputs label { display: flex; flex-direction: column; gap: 5px; }
.grid-inputs label span { font-size: 11px; color: var(--muted); font-weight: 400; }
.field {
  background: var(--field-bg); border: 1px solid var(--panel-br);
  color: var(--text); border-radius: 10px; padding: 9px 11px;
  font-family: 'IBM Plex Mono', monospace; font-size: 14px; width: 100%;
  outline: none;
}
.field:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.18); }
select.field { cursor: pointer; }

.shared-note {
  display: flex; flex-direction: column; gap: 3px;
  font-size: 11px; color: var(--muted); padding-bottom: 4px;
}
.shared-val { font-family: 'IBM Plex Mono', monospace; font-size: 14px; color: var(--text); font-weight: 500; }

.preview {
  background: linear-gradient(135deg, rgba(99,102,241,0.12), rgba(244,114,182,0.08));
  border: 1px solid var(--panel-br);
  border-radius: 14px; padding: 16px; text-align: center;
  margin-bottom: 16px;
}
.preview code {
  font-family: 'IBM Plex Mono', monospace;
  font-size: clamp(18px, 4.5vw, 26px);
  font-weight: 600; letter-spacing: 0.01em; color: var(--text);
  word-break: break-all;
}
.preview.flash { animation: flash 0.45s ease; }
@keyframes flash {
  0% { transform: scale(0.98); background: rgba(99,102,241,0.28); }
  100% { transform: scale(1); }
}

.segments {
  display: flex; flex-wrap: wrap; align-items: flex-start;
  gap: 6px; justify-content: center; margin-bottom: 18px;
}
.seg-wrap { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.seg-chip {
  font-family: 'IBM Plex Mono', monospace; font-size: 14px; font-weight: 600;
  padding: 6px 10px; border-radius: 9px; border: 1px solid;
}
.seg-label { font-size: 9.5px; color: var(--muted); letter-spacing: 0.02em; }
.slash { align-self: center; color: var(--muted); font-family: 'IBM Plex Mono', monospace; font-size: 18px; padding-top: 4px; }

.card-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.copybtn {
  background: var(--accent); color: #fff; border: none;
  border-radius: 10px; padding: 10px 16px; font-size: 13px; font-weight: 600;
  cursor: pointer; font-family: 'Sora', sans-serif; transition: 0.2s;
}
.copybtn:hover { filter: brightness(1.1); }
.copybtn.copied { background: #34d399; }
.ghostbtn {
  background: transparent; color: var(--text);
  border: 1px solid var(--panel-br); border-radius: 10px;
  padding: 10px 14px; font-size: 13px; font-weight: 500; cursor: pointer;
  font-family: 'Sora', sans-serif; transition: 0.2s;
}
.ghostbtn:hover { border-color: var(--accent); }
.ghostbtn.small { padding: 7px 12px; font-size: 12px; }

/* ROMAN REF */
.ref-card { margin-bottom: 18px; }
.roman-grid {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px;
}
@media (max-width: 520px) { .roman-grid { grid-template-columns: repeat(4, 1fr); } }
.roman-cell {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  background: var(--field-bg); border: 1px solid var(--panel-br);
  border-radius: 10px; padding: 10px 4px; cursor: pointer; transition: 0.15s;
}
.roman-cell:hover { border-color: var(--accent); }
.roman-cell.active {
  background: rgba(251,191,36,0.16); border-color: rgba(251,191,36,0.5);
  transform: translateY(-2px);
}
.rc-num { font-size: 11px; color: var(--muted); font-family: 'IBM Plex Mono', monospace; }
.rc-rom { font-size: 18px; font-weight: 700; font-family: 'IBM Plex Mono', monospace; color: var(--text); }
.roman-cell.active .rc-rom { color: #fbbf24; }

/* CODE */
.code-card { padding-bottom: 8px; }
.code-head {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 12px; flex-wrap: wrap; margin-bottom: 14px;
}
.code-head-actions { display: flex; gap: 8px; align-items: center; }
.codeblock {
  background: #060a14; border: 1px solid var(--panel-br);
  border-radius: 14px; padding: 16px; overflow-x: auto;
  font-family: 'IBM Plex Mono', monospace; font-size: 12.5px; line-height: 1.6;
  color: #cbd5e1; margin-bottom: 12px;
}
.codeblock code { white-space: pre; }

/* FOOTER */
.foot {
  margin-top: 30px; display: flex; justify-content: space-between;
  align-items: center; gap: 12px; flex-wrap: wrap;
  font-size: 12px; color: var(--muted);
  border-top: 1px solid var(--panel-br); padding-top: 18px;
}
.foot a { color: var(--accent); text-decoration: none; font-weight: 600; }
.foot a:hover { text-decoration: underline; }