/* North Star — the design system is silence. */

:root {
  --bg: #0a0a0b;
  --bg-elev: #101012;
  --bg-inset: #08080a;
  --border: rgba(255,255,255,0.06);
  --border-strong: rgba(255,255,255,0.12);
  --text: #f5f5f7;
  --text-dim: #98989d;
  --text-faint: #6e6e73;
  --accent: #d4b06a;                                  /* warm gold — the north star */
  --accent-glow: rgba(212,176,106,0.28);
  --accent-soft: rgba(212,176,106,0.12);
  --success: #4ade80;
  --danger: #f87171;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Inter", system-ui, sans-serif;
  --font-serif: "Instrument Serif", "Iowan Old Style", "Apple Garamond", Georgia, serif;
  --font-num:  "SF Mono", "JetBrains Mono", ui-monospace, monospace;
}

[data-theme="light"] {
  --bg: #faf9f6;
  --bg-elev: #ffffff;
  --bg-inset: #f2f0e9;
  --border: rgba(0,0,0,0.06);
  --border-strong: rgba(0,0,0,0.12);
  --text: #1a1a1c;
  --text-dim: #575759;
  --text-faint: #999;
  --accent: #8a6f3a;
  --accent-glow: rgba(138,111,58,0.18);
  --accent-soft: rgba(138,111,58,0.08);
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

/* Ambient starfield glow. Very subtle. */
body {
  background:
    radial-gradient(ellipse at 50% -10%, var(--accent-soft), transparent 55%),
    radial-gradient(ellipse at 90% 100%, rgba(255,255,255,0.02), transparent 60%),
    var(--bg);
  background-attachment: fixed;
}

button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; border: none; background: none; }
a { color: inherit; text-decoration: none; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }
@keyframes glow   { 0%,100% { opacity: 0.3; } 50% { opacity: 0.8; } }
@keyframes shine  { from { background-position: -200% 0; } to { background-position: 200% 0; } }

/* ============ Shell ============ */

.shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  animation: fadeIn 0.4s var(--ease);
}
.topbar {
  position: sticky; top: 0; z-index: 10;
  padding: 20px 32px;
  display: flex; align-items: center; gap: 16px;
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--text);
}
.brand-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
  animation: glow 3.4s ease-in-out infinite;
}
.brand em { font-style: italic; color: var(--text-dim); font-weight: 400; }
.topbar-actions { margin-left: auto; display: flex; gap: 8px; }
.icon-btn {
  width: 40px; height: 40px;
  border-radius: 10px;
  color: var(--text-dim);
  display: grid; place-items: center;
  transition: background 0.15s var(--ease), color 0.15s var(--ease);
  border: 1px solid transparent;
}
.icon-btn:hover { background: var(--bg-elev); color: var(--text); border-color: var(--border); }
.icon-btn svg { width: 18px; height: 18px; }

.main {
  flex: 1;
  padding: 40px 24px 120px;
  max-width: 960px;
  margin: 0 auto;
  width: 100%;
}

/* ============ Hero — the North Star itself ============ */

.hero { padding: 40px 0 60px; text-align: center; }
.hero-eyebrow {
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 14px;
  opacity: 0.9;
}
.hero-name {
  font-family: var(--font-serif);
  font-size: clamp(32px, 6vw, 52px);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 40px;
  color: var(--text);
}
.hero-name em { font-style: italic; color: var(--text-dim); }

.arc {
  display: flex; align-items: baseline; justify-content: center;
  gap: 24px;
  font-family: var(--font-num);
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.arc-num {
  font-family: "SF Pro Display", var(--font-sans);
  font-size: clamp(72px, 16vw, 156px);
  font-weight: 200;
  letter-spacing: -0.06em;
  line-height: 0.9;
  font-variant-numeric: tabular-nums;
}
.arc-current { color: var(--text); }
.arc-target {
  color: var(--accent);
  background: linear-gradient(90deg, var(--accent) 0%, #f5deb3 50%, var(--accent) 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shine 8s ease-in-out infinite;
}
.arc-arrow {
  font-size: clamp(28px, 5vw, 52px);
  color: var(--text-faint);
  font-weight: 200;
  padding: 0 8px;
}
.arc-unit {
  display: block;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-top: 12px;
  font-weight: 500;
}

.progress-outer {
  max-width: 640px;
  margin: 0 auto 22px;
  padding: 0 20px;
}
.progress-track {
  height: 3px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}
.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent) 0%, #f5deb3 100%);
  border-radius: 999px;
  transition: width 1.2s var(--ease);
  box-shadow: 0 0 12px var(--accent-glow);
}
.progress-meta {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 14px;
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--text-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.progress-pct {
  color: var(--text);
  font-weight: 500;
}

.hero-why {
  max-width: 620px;
  margin: 40px auto 0;
  padding: 0 20px;
  font-family: var(--font-serif);
  font-size: clamp(17px, 2.2vw, 20px);
  font-style: italic;
  line-height: 1.55;
  color: var(--text-dim);
  text-align: center;
}
.hero-why::before, .hero-why::after {
  content: "\201C";
  font-size: 1.4em;
  color: var(--accent);
  opacity: 0.5;
}
.hero-why::after { content: "\201D"; }

.hero-empty {
  padding: 60px 20px;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 20px;
  font-style: italic;
  text-align: center;
}

/* ============ Sections below ============ */

.section {
  margin-top: 64px;
  animation: fadeIn 0.4s var(--ease);
}
.section-label {
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 600;
  margin-bottom: 20px;
  display: flex; align-items: center; gap: 12px;
}
.section-label::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* Today + This Week — side by side minimal cards */

.two-up {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.stat-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}
.stat-card:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.stat-eyebrow {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-weight: 500;
  margin-bottom: 12px;
}
.stat-value {
  font-family: "SF Pro Display", var(--font-sans);
  font-size: 42px;
  font-weight: 300;
  letter-spacing: -0.03em;
  color: var(--text);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.stat-value .stat-unit {
  font-size: 15px;
  color: var(--text-faint);
  font-weight: 500;
  margin-left: 6px;
  letter-spacing: 0;
}
.stat-sub {
  margin-top: 10px;
  color: var(--text-dim);
  font-size: 13px;
}
.stat-delta {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px;
  border-radius: 999px;
  font-family: var(--font-num);
  font-size: 11px;
  font-weight: 600;
  margin-left: 8px;
}
.stat-delta.up   { background: rgba(74,222,128,0.12); color: var(--success); }
.stat-delta.down { background: rgba(248,113,113,0.12); color: var(--danger); }
.stat-delta.flat { background: var(--bg-inset); color: var(--text-faint); }

/* Trend chart */

.trend-controls {
  display: inline-flex;
  padding: 4px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 999px;
  margin-bottom: 20px;
}
.trend-btn {
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-dim);
  transition: background 0.15s var(--ease), color 0.15s var(--ease);
  font-family: var(--font-num);
}
.trend-btn:hover { color: var(--text); }
.trend-btn.active {
  background: var(--bg-inset);
  color: var(--text);
  box-shadow: 0 1px 2px rgba(0,0,0,0.4);
}

.trend-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}
.trend-svg { width: 100%; height: 220px; display: block; }
.trend-empty {
  padding: 60px 20px;
  color: var(--text-faint);
  text-align: center;
  font-size: 14px;
  font-style: italic;
}

/* Milestones */

.milestones {
  display: flex; flex-direction: column;
  position: relative;
  padding-left: 28px;
}
.milestones::before {
  content: "";
  position: absolute;
  left: 8px; top: 12px; bottom: 12px;
  width: 1px;
  background: var(--border);
}
.ms {
  position: relative;
  padding: 14px 0 14px 20px;
  transition: opacity 0.2s var(--ease);
  cursor: pointer;
}
.ms::before {
  content: "";
  position: absolute;
  left: -28px; top: 20px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--border-strong);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.ms.done::before {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}
.ms-name {
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
  display: flex; align-items: baseline; gap: 12px;
}
.ms-value {
  font-family: var(--font-num);
  color: var(--accent);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.ms-meta {
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-faint);
}
.ms-note {
  margin-top: 6px;
  font-size: 13px;
  color: var(--text-dim);
  font-family: var(--font-serif);
  font-style: italic;
}
.ms.done .ms-name { color: var(--text-dim); }
.ms.done .ms-value { color: var(--success); }

.ms-add-inline {
  padding: 12px 0 12px 20px;
  color: var(--text-faint);
  font-size: 13px;
  border: 1px dashed var(--border);
  border-radius: 10px;
  margin-top: 8px;
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
  text-align: left;
  padding-left: 20px;
}
.ms-add-inline:hover { color: var(--accent); border-color: var(--border-strong); }

/* Recent progress list */

.progress-list {
  display: flex; flex-direction: column;
  gap: 4px;
}
.progress-row {
  display: grid;
  grid-template-columns: 100px 80px 1fr;
  align-items: center;
  gap: 20px;
  padding: 14px 16px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color 0.15s var(--ease);
}
.progress-row:hover { border-color: var(--border-strong); }
.progress-date {
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.progress-value {
  font-family: var(--font-num);
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.progress-value.pos { color: var(--success); }
.progress-value.neg { color: var(--danger); }
.progress-note {
  color: var(--text-dim);
  font-size: 13px;
}
.progress-note.empty { color: var(--text-faint); font-style: italic; }

/* Review */

.review-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
}
.review-q {
  font-family: var(--font-serif);
  font-size: 20px;
  font-style: italic;
  color: var(--text);
  margin-bottom: 20px;
  line-height: 1.4;
}
.review-a {
  padding: 12px 14px;
  background: var(--bg-inset);
  border-radius: 10px;
  color: var(--text-dim);
  font-size: 14px;
  margin-bottom: 12px;
  white-space: pre-wrap;
  line-height: 1.55;
}
.review-a.empty {
  color: var(--text-faint);
  font-style: italic;
  padding: 20px;
  text-align: center;
  border: 1px dashed var(--border);
  background: transparent;
}
.review-history {
  margin-top: 20px;
  display: flex; flex-direction: column;
  gap: 4px;
}
.review-item {
  padding: 12px 16px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  cursor: pointer;
  transition: border-color 0.15s var(--ease);
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--font-num);
  font-size: 12px;
}
.review-item:hover { border-color: var(--border-strong); }
.review-item .review-week { color: var(--text); font-weight: 500; }
.review-item .review-hint { color: var(--text-faint); }

/* AI insight strip */

.insight {
  margin: 32px 0;
  padding: 18px 24px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent-soft), transparent);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.6;
  font-family: var(--font-serif);
  font-style: italic;
  text-align: center;
}
.insight strong { color: var(--text); font-style: normal; font-family: var(--font-num); font-weight: 600; font-variant-numeric: tabular-nums; }

/* ============ Buttons + fields + modal ============ */

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  font-weight: 500;
  font-size: 14px;
  transition: transform 0.12s var(--ease), background 0.15s var(--ease), border-color 0.15s var(--ease);
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
}
.btn:hover { transform: translateY(-1px); border-color: var(--border-strong); }
.btn.primary {
  background: var(--accent);
  color: #1a1a1c;
  border-color: transparent;
  box-shadow: 0 0 20px var(--accent-glow);
}
.btn.primary:hover { box-shadow: 0 4px 24px var(--accent-glow); }
.btn.ghost { background: transparent; }
.btn.small { padding: 6px 12px; font-size: 12px; }
.btn.danger { color: var(--danger); }
.btn.danger:hover { background: rgba(248,113,113,0.08); border-color: var(--danger); }

.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.field label {
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--text-faint); font-weight: 600;
}
.field input, .field textarea, .field select {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s var(--ease);
  width: 100%;
  font-size: 15px;
}
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--accent); }
.field textarea { min-height: 100px; resize: vertical; font-family: var(--font-serif); font-style: italic; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(6px);
  z-index: 100;
  display: grid; place-items: center;
  padding: 24px;
  animation: fadeIn 0.18s var(--ease);
}
.modal {
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  padding: 32px;
  width: 100%;
  max-width: 520px;
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: 0 30px 80px rgba(0,0,0,0.6);
  animation: fadeIn 0.22s var(--ease);
}
.modal.large { max-width: 680px; }
.modal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.modal-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.modal-footer {
  display: flex; justify-content: flex-end; gap: 10px;
  margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--border);
}

/* Milestone celebration */

@keyframes burst {
  0% { transform: scale(0.4); opacity: 0; }
  40% { opacity: 1; }
  100% { transform: scale(2.2); opacity: 0; }
}
.celebration {
  position: fixed; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1000;
  pointer-events: none;
}
.celebration-ring {
  position: absolute; top: 50%; left: 50%;
  width: 200px; height: 200px;
  border: 2px solid var(--accent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  animation: burst 1.2s ease-out forwards;
}
.celebration-text {
  font-family: var(--font-serif);
  font-size: 40px;
  color: var(--accent);
  text-shadow: 0 0 30px var(--accent-glow);
  animation: fadeIn 0.4s ease-out, fadeIn 0.6s ease-in reverse 0.8s forwards;
}

/* Login */

.login-shell {
  min-height: 100vh;
  display: grid; place-items: center;
  padding: 24px;
  background:
    radial-gradient(ellipse at 50% 20%, var(--accent-soft), transparent 50%),
    var(--bg);
}
.login-card {
  max-width: 400px; width: 100%;
  padding: 44px 36px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 20px;
}
.login-brand {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 32px;
  justify-content: center;
}
.login-title {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 400;
  letter-spacing: -0.02em;
  text-align: center;
}
.login-sub {
  color: var(--text-dim); font-size: 13px;
  text-align: center;
  margin-top: -20px;
  margin-bottom: 24px;
  font-style: italic;
  font-family: var(--font-serif);
}

/* Toast */

.toast {
  position: fixed; bottom: 24px; right: 24px;
  padding: 12px 20px;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  z-index: 200;
  font-size: 14px;
  animation: fadeIn 0.22s var(--ease);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}
.toast.error { border-color: var(--danger); color: var(--danger); }

/* Scrollbar polish */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border-strong);
  border-radius: 999px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--text-faint); }

/* Responsive */

@media (max-width: 720px) {
  .topbar { padding: 16px 20px; }
  .main { padding: 20px 16px 80px; }
  .hero { padding: 20px 0 40px; }
  .two-up { grid-template-columns: 1fr; }
  .progress-row { grid-template-columns: 80px 60px 1fr; gap: 12px; padding: 12px; }
}

.stack { display: flex; flex-direction: column; }
.gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; } .gap-20 { gap: 20px; }
.hide { display: none !important; }
.dim { color: var(--text-dim); }
.faint { color: var(--text-faint); }