/* ===== Design tokens — Herencia360
 * Palette evokes the Poder Judicial de Puerto Rico: institutional teal,
 * burgundy accent for category/action, generous whitespace, calm contrast.
 * =============================================================== */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.25rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem;    --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem;    --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem;   --space-20: 5rem;   --space-24: 6rem;

  --radius-sm: 0.375rem; --radius-md: 0.5rem; --radius-lg: 0.75rem; --radius-xl: 1rem;

  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 720px;
  --content-default: 1180px;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', system-ui, sans-serif;
}

/* Light theme — institutional white + Poder Judicial teal & burgundy */
:root, [data-theme="light"] {
  --color-bg: #fafcfb;
  --color-surface: #ffffff;
  --color-surface-2: #ffffff;
  --color-surface-offset: #eef3f3;
  --color-border: #d6dee0;
  --color-divider: #e4ebec;
  --color-text: #1c2a31;
  --color-text-muted: #5c6b73;
  --color-text-faint: #95a1a8;
  --color-text-inverse: #ffffff;
  --color-primary: #346b78;          /* institutional teal — PJ-PR */
  --color-primary-hover: #285a66;
  --color-primary-active: #1f4954;
  --color-primary-soft: #dfecee;
  --color-accent: #7b0033;            /* burgundy — PJ-PR category */
  --color-accent-hover: #62002a;
  --color-accent-soft: #f3dde5;
  --color-success: #2f6b3a;
  --color-success-soft: #d6e7d3;
  --color-warn: #8a4a14;
  --color-warn-soft: #f4ddc3;
  --shadow-sm: 0 1px 2px rgba(15, 35, 45, 0.05);
  --shadow-md: 0 4px 14px rgba(15, 35, 45, 0.08);
  --shadow-lg: 0 14px 36px rgba(15, 35, 45, 0.12);
}

/* Dark theme — keep the same teal/burgundy identity, deepen surfaces */
[data-theme="dark"] {
  --color-bg: #0f1619;
  --color-surface: #161f23;
  --color-surface-2: #1c272c;
  --color-surface-offset: #1f2c32;
  --color-border: #2b3a40;
  --color-divider: #233138;
  --color-text: #e6edef;
  --color-text-muted: #9aa9b0;
  --color-text-faint: #5a6a72;
  --color-text-inverse: #0f1619;
  --color-primary: #7eb6c1;
  --color-primary-hover: #94c4cf;
  --color-primary-active: #abd2db;
  --color-primary-soft: #1d343c;
  --color-accent: #d96a8e;
  --color-accent-hover: #e588a8;
  --color-accent-soft: #3a1424;
  --color-success: #6daa45;
  --color-success-soft: #2a3a25;
  --color-warn: #d68f4a;
  --color-warn-soft: #3a2c19;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.5);
  --shadow-lg: 0 14px 40px rgba(0,0,0,0.6);
}

/* ===== Base reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; scroll-behavior: smooth; }
body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  background-image:
    radial-gradient(1200px 600px at 90% -10%, color-mix(in oklab, var(--color-primary) 6%, transparent), transparent 60%),
    radial-gradient(900px 500px at -10% 0%, color-mix(in oklab, var(--color-accent) 4%, transparent), transparent 55%);
  background-attachment: fixed;
}
img, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: none; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.15; letter-spacing: -0.01em; text-wrap: balance; }
p { text-wrap: pretty; }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }

a, button, input, select, textarea {
  transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ===== Layout ===== */
.container { width: 100%; max-width: var(--content-default); margin-inline: auto; padding-inline: var(--space-6); }

/* ===== Header ===== */
.site-header {
  border-bottom: 1px solid var(--color-divider);
  background: color-mix(in oklab, var(--color-bg) 80%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  position: sticky; top: 0; z-index: 50;
}
.header-row { display: flex; align-items: center; justify-content: space-between; padding-block: var(--space-4); }
.brand { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; color: var(--color-text); }
.brand .logo { color: var(--color-primary); }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg); letter-spacing: -0.015em; }
.brand-tag { font-size: var(--text-xs); color: var(--color-text-muted); }
.header-nav { display: flex; align-items: center; gap: var(--space-2); }
.lang-toggle, .theme-toggle {
  height: 36px; min-width: 36px; padding: 0 var(--space-3);
  border: 1px solid var(--color-border); border-radius: var(--radius-md);
  background: var(--color-surface); color: var(--color-text);
  font-size: var(--text-sm); font-weight: 500;
  display: inline-flex; align-items: center; justify-content: center;
}
.lang-toggle:hover, .theme-toggle:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* ===== Hero ===== */
.hero { padding-block: clamp(var(--space-10), 6vw, var(--space-16)) var(--space-8); max-width: var(--content-default); }
.eyebrow {
  display: inline-block; font-size: var(--text-xs); font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.12em; color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.hero h1 { font-size: var(--text-2xl); max-width: 22ch; margin-bottom: var(--space-4); color: var(--color-primary); }
.lede { font-size: var(--text-lg); color: var(--color-text-muted); max-width: 62ch; margin-bottom: var(--space-5); }
.disclaimer {
  display: inline-block; font-size: var(--text-sm); color: var(--color-text-muted);
  background: var(--color-primary-soft); border-left: 3px solid var(--color-primary);
  padding: var(--space-3) var(--space-4); border-radius: 0 var(--radius-md) var(--radius-md) 0;
  max-width: 70ch;
}

/* ===== App grid ===== */
.app { padding-bottom: var(--space-12); }
.app-grid { display: grid; grid-template-columns: 1fr; gap: var(--space-6); align-items: start; }
@media (min-width: 960px) { .app-grid { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: var(--space-8); } }

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-5), 3vw, var(--space-8));
  box-shadow: var(--shadow-sm);
}
.panel-title { font-size: var(--text-lg); margin-bottom: var(--space-5); display: flex; align-items: center; gap: var(--space-3); color: var(--color-primary); }
.panel-title::after { content: ""; flex: 1; height: 1px; background: var(--color-divider); }

/* ===== Form ===== */
.field { border: none; margin-bottom: var(--space-5); }
.field legend { font-size: var(--text-sm); font-weight: 600; color: var(--color-text); margin-bottom: var(--space-2); padding: 0; }
.hint { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-2); line-height: 1.5; }

input[type="date"], input[type="number"], input[type="text"] {
  width: 100%;
  height: 44px;
  padding: 0 var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  color: var(--color-text);
  font-size: var(--text-base);
}
input:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px color-mix(in oklab, var(--color-primary) 18%, transparent); outline: none; }

.radio-row { display: flex; gap: var(--space-3); }
.radio-row label {
  flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border); border-radius: var(--radius-md);
  background: var(--color-surface-2); cursor: pointer;
  font-size: var(--text-sm); font-weight: 500;
}
.radio-row label:hover { border-color: var(--color-primary); }
.radio-row input[type="radio"] { accent-color: var(--color-primary); }
.radio-row label:has(input:checked) {
  border-color: var(--color-primary); background: var(--color-primary-soft); color: var(--color-primary);
}

.counter-row { display: flex; align-items: stretch; gap: var(--space-2); }
.counter-row input { text-align: center; max-width: 96px; -moz-appearance: textfield; }
.counter-row input::-webkit-outer-spin-button, .counter-row input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.counter-btn {
  width: 44px; height: 44px;
  border: 1px solid var(--color-border); border-radius: var(--radius-md);
  background: var(--color-surface-2); font-size: var(--text-lg); font-weight: 500; color: var(--color-text);
}
.counter-btn:hover { background: var(--color-primary-soft); border-color: var(--color-primary); color: var(--color-primary); }

.money-row { position: relative; }
.money-prefix { position: absolute; left: var(--space-3); top: 50%; transform: translateY(-50%); color: var(--color-text-muted); font-weight: 600; }
.money-row input { padding-left: var(--space-6); }

#predeceased-list { display: flex; flex-direction: column; gap: var(--space-2); margin-bottom: var(--space-3); }
.predeceased-row {
  display: grid; grid-template-columns: 1fr auto; gap: var(--space-2); align-items: center;
  padding: var(--space-3); background: var(--color-surface-offset); border-radius: var(--radius-md);
}
.predeceased-row label { font-size: var(--text-xs); color: var(--color-text-muted); display: block; margin-bottom: var(--space-1); }
.predeceased-row .remove-btn {
  width: 36px; height: 36px; border-radius: var(--radius-md); background: transparent;
  color: var(--color-text-muted); border: 1px solid transparent;
}
.predeceased-row .remove-btn:hover { color: var(--color-accent); border-color: var(--color-accent); }

/* Buttons */
.form-actions { display: flex; gap: var(--space-3); margin-top: var(--space-6); }
.btn-primary, .btn-secondary, .btn-ghost {
  height: 44px; padding: 0 var(--space-5); border-radius: var(--radius-md);
  font-size: var(--text-sm); font-weight: 600;
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  border: 1px solid transparent;
}
.btn-primary { background: var(--color-primary); color: var(--color-text-inverse); flex: 1; }
.btn-primary:hover { background: var(--color-primary-hover); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-secondary { background: var(--color-surface-2); border-color: var(--color-border); color: var(--color-text); }
.btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-ghost { background: transparent; color: var(--color-text-muted); }
.btn-ghost:hover { color: var(--color-primary); background: var(--color-primary-soft); }

/* ===== Results ===== */
.results-panel { position: sticky; top: 100px; min-height: 360px; }
@media (max-width: 959px) { .results-panel { position: static; } }

.results-empty {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; padding: var(--space-10) var(--space-4); color: var(--color-text-muted);
  min-height: 320px;
}
.results-empty svg { color: var(--color-text-faint); margin-bottom: var(--space-4); }
.results-empty h2 { font-size: var(--text-lg); color: var(--color-text); margin-bottom: var(--space-2); }
.results-empty p { max-width: 38ch; }

.code-badge {
  display: inline-flex; align-items: center; gap: var(--space-2);
  font-size: var(--text-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em;
  padding: var(--space-1) var(--space-3); border-radius: 999px;
  background: var(--color-primary-soft); color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.code-badge.code-2020 { background: var(--color-accent-soft); color: var(--color-accent); }
.results-title { font-size: var(--text-lg); margin-bottom: var(--space-2); color: var(--color-primary); }
.results-summary { color: var(--color-text-muted); margin-bottom: var(--space-5); font-size: var(--text-sm); }

.heir-list { display: flex; flex-direction: column; gap: var(--space-2); margin-bottom: var(--space-5); }
.heir-row {
  display: grid; grid-template-columns: auto 1fr auto; gap: var(--space-3); align-items: center;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border); border-radius: var(--radius-md);
  background: var(--color-surface-2);
}
.heir-icon {
  width: 36px; height: 36px; border-radius: 999px;
  background: var(--color-primary-soft); color: var(--color-primary);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: var(--text-sm);
}
.heir-icon.usufruct { background: var(--color-accent-soft); color: var(--color-accent); }
.heir-info { min-width: 0; }
.heir-name { font-weight: 600; font-size: var(--text-sm); }
.heir-detail { font-size: var(--text-xs); color: var(--color-text-muted); }
.heir-share { text-align: right; }
.heir-fraction { font-family: var(--font-display); font-size: var(--text-base); font-weight: 600; color: var(--color-primary); }
.heir-amount { font-size: var(--text-xs); color: var(--color-text-muted); font-variant-numeric: tabular-nums; }
.heir-row.usufruct-row { border-style: dashed; background: color-mix(in oklab, var(--color-accent-soft) 50%, var(--color-surface-2)); }
.heir-row.usufruct-row .heir-fraction { color: var(--color-accent); }

.results-chart {
  display: flex; height: 14px; border-radius: 999px; overflow: hidden;
  background: var(--color-surface-offset); margin-bottom: var(--space-5);
  border: 1px solid var(--color-border);
}
.chart-seg { height: 100%; transition: width 400ms cubic-bezier(0.16, 1, 0.3, 1); }

.rationale {
  background: var(--color-surface-offset); border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4); margin-bottom: var(--space-4);
}
.rationale summary {
  cursor: pointer; font-weight: 600; font-size: var(--text-sm); color: var(--color-text);
  list-style: none; display: flex; align-items: center; gap: var(--space-2);
}
.rationale summary::before {
  content: "▸"; transition: transform var(--transition); color: var(--color-accent); font-size: var(--text-sm);
}
.rationale[open] summary::before { transform: rotate(90deg); }
.rationale[open] summary { margin-bottom: var(--space-3); }
.rationale p { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: var(--space-2); }
.rationale strong { color: var(--color-text); }
.rationale ul { padding-left: var(--space-5); margin-top: var(--space-2); }
.rationale li { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: var(--space-1); }

.results-actions { display: flex; gap: var(--space-3); justify-content: flex-end; padding-top: var(--space-4); border-top: 1px solid var(--color-divider); }

/* ===== Info strip ===== */
.info-strip {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-5); padding-block: var(--space-12) var(--space-16);
  border-top: 1px solid var(--color-divider); margin-top: var(--space-8);
}
.info-card h3 { font-size: var(--text-base); margin-bottom: var(--space-2); color: var(--color-text); display: flex; align-items: center; gap: var(--space-3); }
.info-card .info-icon {
  width: 32px; height: 32px; border-radius: 999px;
  background: var(--color-accent); color: var(--color-text-inverse);
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.info-card p { font-size: var(--text-sm); color: var(--color-text-muted); }

/* ===== Footer ===== */
.site-footer { border-top: 1px solid var(--color-divider); background: var(--color-surface); }
.footer-row { display: flex; flex-wrap: wrap; gap: var(--space-3); justify-content: space-between; padding-block: var(--space-6); font-size: var(--text-sm); color: var(--color-text-muted); }

/* ===== Print ===== */
@media print {
  .site-header, .site-footer, .input-panel, .info-strip, .results-actions, .form-actions, .hero .disclaimer, .lang-toggle, .theme-toggle { display: none !important; }
  body { background: white; color: black; }
  .panel { border: 1px solid #888; box-shadow: none; }
  .results-panel { position: static; }
  .app-grid { grid-template-columns: 1fr; }
}

/* ===== Footer link ===== */
.footer-links a { color: var(--color-primary); text-decoration: none; border-bottom: 1px solid transparent; }
.footer-links a:hover { border-bottom-color: var(--color-primary); }

/* ===== Modal ===== */
.modal {
  position: fixed; inset: 0; z-index: 100;
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-4);
  animation: modal-in 220ms cubic-bezier(0.16, 1, 0.3, 1);
}
.modal-backdrop {
  position: absolute; inset: 0;
  background: color-mix(in oklab, #0f1619 60%, transparent);
  backdrop-filter: blur(4px);
}
.modal-card {
  position: relative; z-index: 1;
  width: 100%; max-width: 480px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-6), 4vw, var(--space-8));
  box-shadow: var(--shadow-lg);
  max-height: calc(100dvh - var(--space-8));
  overflow-y: auto;
}
.modal-close {
  position: absolute; top: var(--space-3); right: var(--space-3);
  width: 36px; height: 36px; border-radius: var(--radius-md);
  color: var(--color-text-muted); font-size: 22px; line-height: 1;
  display: inline-flex; align-items: center; justify-content: center;
}
.modal-close:hover { background: var(--color-surface-offset); color: var(--color-text); }
.modal-title { font-size: var(--text-lg); color: var(--color-primary); margin-bottom: var(--space-2); padding-right: var(--space-8); }
.modal-sub { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: var(--space-5); }
.modal-field { display: flex; flex-direction: column; gap: var(--space-2); margin-bottom: var(--space-4); }
.modal-field label { font-size: var(--text-sm); font-weight: 600; color: var(--color-text); }
.modal-consent {
  display: flex; align-items: flex-start; gap: var(--space-3);
  font-size: var(--text-sm); color: var(--color-text-muted);
  padding: var(--space-3); border-radius: var(--radius-md);
  background: var(--color-surface-offset);
  cursor: pointer; margin-bottom: var(--space-3);
}
.modal-consent input[type="checkbox"] {
  margin-top: 3px; accent-color: var(--color-primary); flex-shrink: 0;
}
.modal-fine { font-size: var(--text-xs); color: var(--color-text-faint); margin-bottom: var(--space-5); line-height: 1.6; }
.modal-actions { display: flex; justify-content: space-between; gap: var(--space-3); }
.modal-actions .btn-primary { flex: none; min-width: 140px; }
.modal-error {
  margin-top: var(--space-3); padding: var(--space-3) var(--space-4);
  background: var(--color-accent-soft); color: var(--color-accent);
  border-left: 3px solid var(--color-accent); border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: var(--text-sm);
}
.modal-state[data-state="loading"], .modal-state[data-state="success"] {
  text-align: center; padding: var(--space-6) 0;
}
.modal-spinner {
  width: 36px; height: 36px; margin: 0 auto var(--space-4) auto;
  border: 3px solid var(--color-surface-offset);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 700ms linear infinite;
}
.modal-loading-text { font-size: var(--text-sm); color: var(--color-text-muted); }
.modal-success-icon {
  width: 64px; height: 64px; margin: 0 auto var(--space-4) auto;
  border-radius: 999px;
  background: var(--color-primary-soft); color: var(--color-primary);
  display: inline-flex; align-items: center; justify-content: center;
}
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes modal-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .modal { animation: none; }
  .modal-spinner { animation-duration: 1500ms; }
}

/* Hide section when not relevant */
.hidden-section { display: none !important; }
[hidden] { display: none !important; }