/* ===================== Tema editorial (papel + serif) ===================== */
:root {
  --paper: #f3efe6;
  --surface: #faf7f0;
  --surface-2: #ebe5d8;
  --ink: #211d17;
  --ink-soft: #6f6656;
  --line: #d9d2c3;
  --accent: #1f5c43;
  --accent-bright: #17513c;
  --accent-ink: #faf7f0;
  --accent-soft: #e3ece5;
  --cost: #a8442e;
  --cost-soft: #efe0d8;
  --shadow: none;
  --radius: 8px;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
}
:root[data-theme="dark"] {
  --paper: #17140f;
  --surface: #201c15;
  --surface-2: #2a251c;
  --ink: #f1ebdf;
  --ink-soft: #9e9484;
  --line: #383225;
  --accent: #74c39b;
  --accent-bright: #8bd0ac;
  --accent-ink: #10251b;
  --accent-soft: #1a2a20;
  --cost: #d97a5f;
  --cost-soft: #2a1a13;
  --shadow: none;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  transition: background .25s ease, color .25s ease;
  position: relative;
}
/* grano de papel */
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: .04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}
:root[data-theme="dark"] body::before { opacity: .05; }
.wrap { width: 100%; max-width: 680px; margin: 0 auto; padding: 0 22px; position: relative; z-index: 1; }
.hidden { display: none !important; }

.summary-value, .habit-year .amt, .stat .val, .streak b, .imp-val, .reward .r-count { font-variant-numeric: lining-nums; }

/* ===================== Contenido informativo de la home ===================== */
.home-info { margin: 56px auto 40px; padding-top: 36px; border-top: 1px solid var(--ink); }
.home-info h2 { font-family: var(--font-display); font-size: 1.55rem; font-weight: 600; letter-spacing: -.01em; margin: 34px 0 12px; }
.home-info h2:first-child { margin-top: 0; }
.home-info h3 { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; margin: 20px 0 6px; }
.home-info p, .home-info li { color: var(--ink-soft); font-size: 1rem; }
.home-info p { margin-bottom: 12px; }
.home-info strong { color: var(--ink); }
.home-info a { color: var(--accent); }
.home-info .steps { padding-left: 22px; margin-bottom: 14px; }
.home-info .steps li { margin-bottom: 8px; }
.home-info .table-wrap { overflow-x: auto; margin: 6px 0 8px; }
.home-info table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.home-info th, .home-info td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); }
.home-info th { font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-soft); border-bottom-color: var(--ink); }
.home-info td { color: var(--ink); }
.home-info td.num { text-align: right; font-weight: 600; color: var(--cost); white-space: nowrap; font-variant-numeric: lining-nums; }
.home-info th:last-child { text-align: right; }
.home-info .small { font-size: .82rem; }
.home-info .guide-links { list-style: none; }
.home-info .guide-links li { padding: 10px 0; border-bottom: 1px solid var(--line); }
.home-info .guide-links a { text-decoration: none; font-weight: 500; }
.home-info .guide-links a:hover { text-decoration: underline; }

/* ===================== Header ===================== */
.app-header {
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--ink);
  position: sticky; top: 0; z-index: 10;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--ink); }
.brand-mark { width: 30px; height: 30px; color: var(--accent); display: block; }
.brand-mark svg { width: 100%; height: 100%; display: block; }
.brand-name { font-family: var(--font-display); font-weight: 600; font-size: 1.4rem; letter-spacing: -.01em; }
.icon-btn {
  background: transparent; border: 1px solid var(--line); border-radius: 7px;
  width: 40px; height: 40px; cursor: pointer; color: var(--ink-soft);
  display: grid; place-items: center; transition: border-color .2s, color .2s;
}
.icon-btn:hover { border-color: var(--ink); color: var(--ink); }
.icon-btn svg { width: 18px; height: 18px; }

main { flex: 1; padding: 40px 0 64px; }

/* ===================== Micro-etiquetas ===================== */
.summary-label, .stat .lbl, .habit-year .lbl, .imp-lbl {
  font-size: .66rem; font-weight: 600; letter-spacing: .13em; text-transform: uppercase; color: var(--ink-soft);
}

/* ===================== Franja de impacto ===================== */
.impact { margin-bottom: 4px; padding-bottom: 32px; border-bottom: 1px solid var(--ink); margin-bottom: 40px; }
.impact-intro { margin-bottom: 30px; }
.impact-intro h1, .impact-intro h2 { font-family: var(--font-display); font-size: 2.4rem; font-weight: 600; letter-spacing: -.02em; line-height: 1.02; }
.impact-intro h1 .hl, .impact-intro h2 .hl { color: var(--accent); font-style: italic; font-weight: 500; }
.impact-intro p { color: var(--ink-soft); font-size: .95rem; margin-top: 10px; }
.impact-stats { display: grid; grid-template-columns: repeat(3, 1fr); }
.imp { display: flex; flex-direction: column; gap: 8px; padding: 4px 0 4px 20px; border-left: 1px solid var(--line); }
.imp:first-child { padding-left: 0; border-left: none; }
.imp-val { font-family: var(--font-display); font-size: 2.3rem; font-weight: 600; letter-spacing: -.02em; line-height: 1; }
.imp-val.cost { color: var(--cost); }
.imp-val.save { color: var(--accent); }

/* ===================== Section head ===================== */
.section-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.section-head h2 { font-family: var(--font-display); font-size: 1.35rem; font-weight: 600; letter-spacing: -.01em; }

/* ===================== Botones ===================== */
.btn {
  border: 1px solid transparent; border-radius: 7px; padding: 10px 17px;
  font-size: .9rem; font-weight: 500; font-family: var(--font-body); cursor: pointer;
  display: inline-flex; align-items: center; gap: 8px;
  transition: transform .05s ease, background .2s, border-color .2s, color .2s;
}
.btn:active { transform: scale(.98); }
.btn { text-decoration: none; }
.btn svg { width: 16px; height: 16px; }
.btn.primary { background: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { background: var(--accent-bright); }
.btn.cta::after { content: "→"; font-size: 1.05em; line-height: 1; }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn.ghost:hover { border-color: var(--ink); }
.btn.danger { background: transparent; color: var(--cost); border-color: color-mix(in srgb, var(--cost) 45%, transparent); }
.btn.danger:hover { background: var(--cost-soft); }
.btn.back { margin-bottom: 26px; padding-left: 2px; border: none; color: var(--ink-soft); }
.btn.back:hover { color: var(--ink); }

/* ===================== Tarjetas de hábito ===================== */
.habit-list { display: flex; flex-direction: column; }
.habit-card {
  background: transparent; border: none; border-bottom: 1px solid var(--line); border-radius: 0;
  padding: 18px 4px; cursor: pointer; display: flex; gap: 16px; align-items: center;
  transition: background .18s, padding-left .18s;
}
.habit-card:first-child { border-top: 1px solid var(--line); }
.habit-card:hover { background: var(--surface); padding-left: 12px; }
.habit-emoji { font-size: 1.4rem; width: 46px; height: 46px; flex-shrink: 0; border-radius: 8px; background: var(--surface-2); display: grid; place-items: center; }
.habit-info { flex: 1; min-width: 0; }
.habit-name { font-family: var(--font-display); font-weight: 600; font-size: 1.12rem; letter-spacing: -.01em; }
.habit-sub { font-size: .82rem; color: var(--ink-soft); margin-top: 1px; }
.habit-year { text-align: right; }
.habit-year .amt { font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; color: var(--cost); }
.habit-year .lbl { margin-top: 2px; }

/* ===================== Empty ===================== */
.empty { text-align: center; padding: 64px 20px; color: var(--ink-soft); }
.empty-icon { display: inline-grid; place-items: center; width: 60px; height: 60px; color: var(--ink-soft); margin-bottom: 20px; }
.empty-icon svg { width: 100%; height: 100%; }
.empty h3 { font-family: var(--font-display); color: var(--ink); font-weight: 600; font-size: 1.3rem; margin-bottom: 8px; }
.empty h1 { font-family: var(--font-display); color: var(--ink); font-weight: 600; font-size: clamp(1.7rem, 6vw, 2.2rem); letter-spacing: -.02em; line-height: 1.1; margin-bottom: 12px; }
.empty h1 .hl { color: var(--accent); font-style: italic; font-weight: 500; }
.empty p { max-width: 46ch; margin-left: auto; margin-right: auto; }
.empty p { margin-bottom: 24px; }

/* ===================== Detalle ===================== */
.detail-hero {
  background: transparent; border: none; border-bottom: 1px solid var(--ink); border-radius: 0;
  padding: 4px 0 26px; margin-bottom: 28px; display: flex; align-items: center; gap: 18px;
}
.detail-hero .demoji { font-size: 1.7rem; width: 60px; height: 60px; flex-shrink: 0; border-radius: 10px; background: var(--surface-2); display: grid; place-items: center; }
.detail-hero .dhead { min-width: 0; }
.detail-hero h2 { font-family: var(--font-display); font-size: 1.9rem; font-weight: 600; letter-spacing: -.02em; line-height: 1.05; }
.detail-hero .dsub { color: var(--ink-soft); font-size: .88rem; margin-top: 5px; }

.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-bottom: 28px; background: var(--line); border: 1px solid var(--line); }
.stat { background: var(--paper); padding: 20px; }
.stat .val { font-family: var(--font-display); font-size: 1.85rem; font-weight: 600; letter-spacing: -.02em; line-height: 1; margin-bottom: 8px; }
.stat.year .val { color: var(--cost); }
.stat.saved .val { color: var(--accent); }
.stat.five .val { color: var(--ink); }

.panel { background: transparent; border: none; border-top: 1px solid var(--line); border-radius: 0; padding: 26px 0; box-shadow: none; margin: 0; }
.panel h3 { font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; letter-spacing: -.01em; margin-bottom: 18px; }
.chart-box { position: relative; height: 210px; width: 100%; }

/* Registro diario */
.day-check { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.day-check .q { flex: 1; font-size: .95rem; min-width: 150px; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 7px; overflow: hidden; }
.seg button { border: none; background: transparent; padding: 9px 17px; font-size: .86rem; font-weight: 500; font-family: var(--font-body); color: var(--ink-soft); cursor: pointer; transition: background .15s, color .15s; }
.seg button + button { border-left: 1px solid var(--line); }
.seg button:hover { color: var(--ink); }
.seg button.on-fall { background: var(--cost); color: #fff; }
.seg button.on-clean { background: var(--accent); color: var(--accent-ink); }
.streak { font-size: .88rem; color: var(--ink-soft); margin-top: 16px; }
.streak b { color: var(--accent); font-weight: 600; }

/* Comparador */
.rewards { display: flex; flex-direction: column; }
.reward { display: flex; align-items: center; gap: 15px; padding: 13px 0; border-top: 1px solid var(--line); }
.reward:first-child { border-top: none; }
.reward .r-icon { width: 21px; height: 21px; flex-shrink: 0; color: var(--ink-soft); display: grid; place-items: center; }
.reward .r-icon svg { width: 100%; height: 100%; }
.reward:not(.locked) .r-icon { color: var(--accent); }
.reward .r-name { flex: 1; font-size: .95rem; }
.reward .r-count { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; color: var(--accent); }
.reward.locked { opacity: .4; }
.reward.locked .r-count { color: var(--ink-soft); }

.detail-actions { display: flex; gap: 12px; border-top: 1px solid var(--line); padding-top: 24px; }
.detail-actions .btn { flex: 1; justify-content: center; }

/* ===================== Modal ===================== */
.modal { position: fixed; inset: 0; background: rgba(33, 29, 23, .45); display: grid; place-items: center; z-index: 100; padding: 16px; animation: fade .15s ease; }
@keyframes fade { from { opacity: 0; } }
.modal-box { background: var(--surface); border: 1px solid var(--ink); border-radius: 12px; padding: 30px; width: 100%; max-width: 440px; box-shadow: 0 24px 60px rgba(33,29,23,.28); max-height: 90vh; overflow-y: auto; }
.modal-box h2 { font-family: var(--font-display); font-weight: 600; font-size: 1.6rem; letter-spacing: -.01em; margin-bottom: 20px; }
form label { display: block; font-size: .68rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; margin: 18px 0 8px; color: var(--ink-soft); }
form input, form select { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 7px; font-size: 1rem; font-family: inherit; background: var(--paper); color: var(--ink); transition: border-color .15s; }
form input:focus, form select:focus { outline: none; border-color: var(--accent); }
.row { display: flex; gap: 10px; }
.emoji-input { flex: 0 0 58px; text-align: center; font-size: 1.35rem; }
.modal-actions { display: flex; gap: 10px; margin-top: 26px; }
.modal-actions .btn { flex: 1; justify-content: center; padding: 13px; }

/* ===================== Premium ===================== */
.premium-lead { color: var(--ink-soft); font-size: .95rem; margin-bottom: 16px; }
.premium-list { list-style: none; margin: 0 0 8px; padding: 0; }
.premium-list li { padding: 10px 0 10px 28px; border-top: 1px solid var(--line); font-size: .95rem; position: relative; }
.premium-list li:first-child { border-top: none; }
.premium-list li::before { content: ""; position: absolute; left: 2px; top: 15px; width: 12px; height: 7px; border-left: 2px solid var(--accent); border-bottom: 2px solid var(--accent); transform: rotate(-45deg); }
.premium-note { font-size: .78rem; color: var(--ink-soft); margin-top: 14px; text-align: center; }

/* ===================== Footer ===================== */
.app-footer { border-top: 1px solid var(--ink); padding: 24px 0; color: var(--ink-soft); font-size: .78rem; text-align: center; }
.foot-links { margin-bottom: 8px; }
.foot-links a { color: var(--ink-soft); text-decoration: none; }
.foot-links a:hover { color: var(--ink); text-decoration: underline; }

@media (max-width: 520px) {
  .impact-intro h1, .impact-intro h2 { font-size: 1.9rem; }
  .imp { padding-left: 12px; }
  .imp-val { font-size: 1.55rem; }
  .stat .val { font-size: 1.55rem; }
}

/* ===================== Que no se te olvide (instalar + recordatorio) ===================== */
.retain { margin-top: 30px; padding: 22px 22px 14px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.retain h3 { font-family: var(--font-display); font-size: 1.2rem; font-weight: 600; letter-spacing: -.01em; }
.retain-lead { font-size: .9rem; color: var(--ink-soft); margin: 4px 0 6px; }
.retain-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding: 16px 0; border-top: 1px solid var(--line); }
.retain-row:first-of-type { border-top: none; }
.retain-txt { flex: 1 1 220px; display: flex; flex-direction: column; gap: 3px; font-size: .88rem; color: var(--ink-soft); }
.retain-txt strong { color: var(--ink); font-size: .98rem; font-weight: 600; }
.retain-txt .done { color: var(--accent); font-weight: 600; }
.retain-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.retain-time { font-size: .85rem; color: var(--ink-soft); display: inline-flex; align-items: center; gap: 6px; }
.retain-time input { padding: 8px 10px; border: 1px solid var(--line); border-radius: 7px; font-size: .9rem; font-family: inherit; background: var(--paper); color: var(--ink); }
.retain-close { display: block; margin: 4px auto 0; background: none; border: none; color: var(--ink-soft); font-size: .78rem; text-decoration: underline; cursor: pointer; font-family: var(--font-body); }