/* GeoEnthalpy v0.6.1 — línea visual HeatVein (petróleo #103C46 + calor #F59E0B), Inter.
   Contraste WCAG AA verificado en tests (app/tests/test_frontend_static.py). */
@font-face { font-family: Inter; font-weight: 400; font-display: swap; src: url(/vendor/fonts/inter-latin-400-normal.woff2) format("woff2"); }
@font-face { font-family: Inter; font-weight: 500; font-display: swap; src: url(/vendor/fonts/inter-latin-500-normal.woff2) format("woff2"); }
@font-face { font-family: Inter; font-weight: 600; font-display: swap; src: url(/vendor/fonts/inter-latin-600-normal.woff2) format("woff2"); }
@font-face { font-family: Inter; font-weight: 700; font-display: swap; src: url(/vendor/fonts/inter-latin-700-normal.woff2) format("woff2"); }

:root {
  --bg: #F6F8F9; --surface: #FFFFFF; --surface-2: #EEF6F7; --border: #D5E9EC; --border-strong: #A9D2D9;
  --text: #0A2A32; --muted: #3D5A62; --primary: #103C46; --primary-hover: #174E5A; --on-primary: #FFFFFF;
  --accent: #B45309; --accent-bg: #F59E0B; --on-accent: #0A2A32; --accent-soft: #FFF7E8;
  --danger: #B91C1C; --danger-soft: #FEF2F2; --ok: #166534; --ok-soft: #F0FDF4;
  --warn: #8A3F07; --warn-soft: #FDEBC8; --notice-text: #3D5A62; --focus: #D97706;
  --ne-fill: rgba(245, 158, 11, 0.22); --ne-line: #B45309;
  --shadow: 0 1px 2px rgba(16,60,70,.06), 0 4px 16px rgba(16,60,70,.07);
  --radius: 14px; --radius-sm: 9px;
  --plot-t: #B91C1C; --plot-p: #1F6270; --plot-bpd: #B45309; --plot-ccl: #6D28D9; --plot-spin: #0F766E; --plot-gr: #4D7C0F;
  --litho-high: #8D6E63; --litho-mid: #C8B6A6; --litho-low: #F3EAD8; --litho-na: #E0E0E0; --litho-text: #1B1B1B;
  --mech-line: #37474F; --mech-hanger: #6A1B9A; --mech-slot: rgba(2,119,189,.25); --mech-damage: rgba(198,40,40,.35); --corr-fill: rgba(245,158,11,.30); --corr-line: #B45309;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  html[data-theme="auto"] {
    --bg: #071E24; --surface: #0A2A32; --surface-2: #103C46; --border: #1F6270; --border-strong: #2B7A88;
    --text: #EEF6F7; --muted: #A9D2D9; --primary: #74B3BE; --primary-hover: #A9D2D9; --on-primary: #071E24;
    --accent: #FBBF24; --accent-bg: #F59E0B; --on-accent: #071E24; --accent-soft: #2A2410;
    --danger: #FCA5A5; --danger-soft: #3B1414; --ok: #86EFAC; --ok-soft: #0F2A1A;
    --warn: #FDE68A; --warn-soft: #3A2A0A; --notice-text: #A9D2D9; --focus: #FBBF24;
    --ne-fill: rgba(251, 191, 36, 0.20); --ne-line: #FBBF24;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 20px rgba(0,0,0,.25);
    --plot-t: #F87171; --plot-p: #74B3BE; --plot-bpd: #FBBF24; --plot-ccl: #C4B5FD; --plot-spin: #5EEAD4; --plot-gr: #BEF264;
    --litho-high: #A1887F; --litho-mid: #7E6A5C; --litho-low: #4E4436; --litho-na: #37474F; --litho-text: #F5F5F5;
    --mech-line: #CFD8DC; --mech-hanger: #CE93D8; --mech-slot: rgba(79,195,247,.30); --mech-damage: rgba(239,83,80,.45); --corr-fill: rgba(251,191,36,.28); --corr-line: #FBBF24;
    color-scheme: dark;
  }
}
html[data-theme="dark"] {
  --bg: #071E24; --surface: #0A2A32; --surface-2: #103C46; --border: #1F6270; --border-strong: #2B7A88;
  --text: #EEF6F7; --muted: #A9D2D9; --primary: #74B3BE; --primary-hover: #A9D2D9; --on-primary: #071E24;
  --accent: #FBBF24; --accent-bg: #F59E0B; --on-accent: #071E24; --accent-soft: #2A2410;
  --danger: #FCA5A5; --danger-soft: #3B1414; --ok: #86EFAC; --ok-soft: #0F2A1A;
  --warn: #FDE68A; --warn-soft: #3A2A0A; --notice-text: #A9D2D9; --focus: #FBBF24;
  --ne-fill: rgba(251, 191, 36, 0.20); --ne-line: #FBBF24;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 6px 20px rgba(0,0,0,.25);
  --plot-t: #F87171; --plot-p: #74B3BE; --plot-bpd: #FBBF24; --plot-ccl: #C4B5FD; --plot-spin: #5EEAD4; --plot-gr: #BEF264;
    --litho-high: #A1887F; --litho-mid: #7E6A5C; --litho-low: #4E4436; --litho-na: #37474F; --litho-text: #F5F5F5;
    --mech-line: #CFD8DC; --mech-hanger: #CE93D8; --mech-slot: rgba(79,195,247,.30); --mech-damage: rgba(239,83,80,.45); --corr-fill: rgba(251,191,36,.28); --corr-line: #FBBF24;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif; font-size: 16px; line-height: 1.55;
  background: var(--bg); color: var(--text); -webkit-font-smoothing: antialiased; min-height: 100vh;
  display: flex; flex-direction: column; }
main:focus { outline: none; }
main { flex: 1; width: 100%; max-width: 1240px; margin: 0 auto; padding: 28px 20px 56px; outline: none; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); font-weight: 700; }
h2 { font-size: 1.35rem; font-weight: 650; }
h3 { font-size: 1.08rem; font-weight: 650; }
p { margin: 0 0 1em; }
a { color: var(--primary); text-underline-offset: 3px; }
a:hover { color: var(--primary-hover); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
.skip { position: absolute; left: 12px; top: -60px; background: var(--accent-bg); color: var(--on-accent); padding: 8px 14px;
  border-radius: 8px; z-index: 100; font-weight: 600; }
.skip:focus { top: 10px; }
.muted { color: var(--muted); }
.small { font-size: .875rem; }

/* barra superior */
.topbar { background: #103C46; color: #fff; position: sticky; top: 0; z-index: 40; box-shadow: 0 2px 10px rgba(0,0,0,.15); }
.topbar-in { max-width: 1240px; margin: 0 auto; padding: 10px 20px; display: flex; align-items: center; gap: 18px; }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 700; font-size: 1.2rem; }
.brand:hover { color: #fff; }
.brand-x { color: #FBBF24; }
.nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
.nav a, .nav button.linklike { color: #EEF6F7; text-decoration: none; padding: 7px 12px; border-radius: 8px; font-weight: 500; font-size: .95rem;
  background: none; border: 0; cursor: pointer; font-family: inherit; }
.nav a:hover, .nav button.linklike:hover { background: rgba(255,255,255,.1); color: #fff; }
.nav a[aria-current="page"] { background: rgba(251,191,36,.18); color: #FDEBC8; }
.nav .spacer { flex: 1; }
.tools { display: flex; align-items: center; gap: 8px; }
.lang-switch { display: inline-flex; border: 1px solid rgba(255,255,255,.35); border-radius: 999px; overflow: hidden; }
.lang-switch button { background: transparent; color: #EEF6F7; border: 0; padding: 5px 11px; font: 600 .82rem Inter, sans-serif; cursor: pointer; }
.lang-switch button[aria-pressed="true"] { background: #F59E0B; color: #0A2A32; }
.icon-btn { background: transparent; border: 1px solid rgba(255,255,255,.35); color: #fff; border-radius: 999px; width: 36px; height: 32px;
  cursor: pointer; font-size: 1rem; }
.menu-btn { display: none; background: transparent; border: 1px solid rgba(255,255,255,.35); color: #fff; border-radius: 8px;
  padding: 4px 10px; font-size: 1.2rem; cursor: pointer; margin-left: auto; }
@media (max-width: 860px) {
  .topbar-in { flex-wrap: wrap; }
  .menu-btn { display: block; }
  .nav { display: none; order: 3; width: 100%; flex-direction: column; padding-bottom: 8px; }
  .nav.open { display: flex; }
  .tools { order: 2; }
}

.banner { max-width: 1240px; margin: 12px auto 0; padding: 10px 16px; border-radius: var(--radius-sm); background: var(--warn-soft);
  color: var(--warn); font-size: .92rem; width: calc(100% - 40px); }
.footer { border-top: 1px solid var(--border); background: var(--surface); }
.footer-in { max-width: 1240px; margin: 0 auto; padding: 18px 20px; display: flex; gap: 18px; flex-wrap: wrap; align-items: center;
  justify-content: space-between; font-size: .9rem; }
.footer-links { display: flex; gap: 16px; }

/* componentes */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px; }
.card + .card { margin-top: 18px; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.between { justify-content: space-between; }
.stack > * + * { margin-top: 14px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 10px; border: 1px solid transparent;
  padding: 10px 18px; font: 600 .95rem Inter, sans-serif; cursor: pointer; text-decoration: none; min-height: 42px; }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-hover); color: var(--on-primary); }
.btn-accent { background: var(--accent-bg); color: var(--on-accent); }
.btn-accent:hover { filter: brightness(1.05); color: var(--on-accent); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }
.btn-danger { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }
.btn-sm { padding: 6px 12px; min-height: 34px; font-size: .86rem; }
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 10px; border-radius: 999px; font-size: .78rem; font-weight: 650;
  background: var(--surface-2); color: var(--text); border: 1px solid var(--border); white-space: nowrap; }
.badge-accent { background: var(--accent-soft); color: var(--accent); border-color: var(--accent-bg); }
.badge-ok { background: var(--ok-soft); color: var(--ok); border-color: var(--ok); }
.badge-high { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }
.badge-medium { background: var(--warn-soft); color: var(--warn); border-color: var(--accent-bg); }
.badge-low { background: var(--surface-2); color: var(--muted); }
.badge-missing { background: transparent; color: var(--muted); border-style: dashed; text-decoration: line-through; }
.alert { padding: 12px 14px; border-radius: var(--radius-sm); border: 1px solid; font-size: .93rem; }
.alert-error { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }
.alert-ok { background: var(--ok-soft); color: var(--ok); border-color: var(--ok); }
.alert-info { background: var(--surface-2); color: var(--text); border-color: var(--border-strong); }
.alert-warn { background: var(--warn-soft); color: var(--warn); border-color: var(--accent-bg); }
.alert ul { margin: 6px 0 0; padding-left: 20px; }

/* formularios */
form .field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
label { font-weight: 600; font-size: .92rem; }
input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
  font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border-strong); border-radius: 10px;
  padding: 10px 12px; min-height: 44px; width: 100%; }
textarea { min-height: 80px; }
input:focus, select:focus, textarea:focus { outline: 3px solid var(--focus); outline-offset: 1px; border-color: var(--primary); }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 500; }
.check input { width: 20px; height: 20px; margin-top: 2px; accent-color: var(--primary); flex: none; }
.hint { font-size: .85rem; color: var(--muted); font-weight: 400; }
.auth-wrap { max-width: 460px; margin: 10px auto; }

/* landing */
.hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 36px; align-items: center; padding: 26px 0 36px; }
.hero h1 { font-size: clamp(2rem, 4.4vw, 3.1rem); }
.hero .lead { font-size: 1.15rem; color: var(--muted); max-width: 38em; }
.hero-art { background: linear-gradient(160deg, #103C46, #174B57 60%, #1B5462); border-radius: 24px; padding: 26px; box-shadow: var(--shadow); }
.hero-art svg { width: 100%; height: auto; display: block; }
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; } }
.feature h3 { display: flex; gap: 10px; align-items: center; }
.feature .ico { width: 36px; height: 36px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); display: inline-grid;
  place-items: center; font-weight: 700; flex: none; }

/* proyectos */
.project-card { display: flex; flex-direction: column; gap: 8px; text-decoration: none; color: inherit; transition: transform .12s, box-shadow .12s; }
.project-card:hover { transform: translateY(-2px); color: inherit; }
.project-card h3 { margin: 0; }
.usage { height: 8px; border-radius: 999px; background: var(--surface-2); overflow: hidden; border: 1px solid var(--border); }
.usage > span { display: block; height: 100%; background: var(--accent-bg); }
table.list { width: 100%; border-collapse: collapse; font-size: .93rem; }
table.list th, table.list td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.list th { color: var(--muted); font-weight: 600; font-size: .82rem; text-transform: uppercase; letter-spacing: .03em; }
.table-wrap { overflow-x: auto; }

/* carga */
.drop { border: 2px dashed var(--border-strong); border-radius: var(--radius); padding: 22px; text-align: center; background: var(--surface-2);
  cursor: pointer; }
.drop.over { border-color: var(--accent-bg); background: var(--accent-soft); }
.slots { display: grid; gap: 8px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); margin-top: 14px; }
.slot { border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; background: var(--surface); font-size: .9rem; }
.slot.done { border-color: var(--ok); }
.slot .name { font-weight: 600; word-break: break-all; }

/* análisis */
.analysis-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 18px; align-items: start; }
@media (max-width: 1080px) { .analysis-grid { grid-template-columns: 1fr; } }
.plot-box { width: 100%; height: 760px; }
details.qc summary { cursor: pointer; font-weight: 600; }
@media (max-width: 640px) { .plot-box { height: 560px; } }
.tracks { display: flex; gap: 8px; flex-wrap: wrap; margin: 6px 0 10px; }
.track-toggle { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 999px; border: 1px solid var(--border-strong);
  font-size: .86rem; font-weight: 600; cursor: pointer; background: var(--surface); }
.track-toggle input { accent-color: var(--primary); }
.track-toggle.unavailable { opacity: .6; cursor: not-allowed; border-style: dashed; }
.swatch { width: 14px; height: 4px; border-radius: 2px; display: inline-block; }
.obs { border: 1px solid var(--border); border-left: 4px solid var(--accent-bg); border-radius: 10px; padding: 14px; background: var(--surface); }
.obs + .obs { margin-top: 12px; }
.obs h4 { margin: 0 0 6px; font-size: 1rem; }
.obs ul { margin: 6px 0; padding-left: 18px; font-size: .9rem; }
/* aviso legal en letra pequeña: visible, nunca oculto ni colapsado (como en 0.5.2) */
.mech-notice { display: block !important; font-size: 12px; line-height: 1.45; color: var(--notice-text); margin-top: 10px;
  padding-top: 8px; border-top: 1px dashed var(--border-strong); visibility: visible !important; }
.ne-item { border-left: 4px solid var(--ne-line); background: var(--accent-soft); border-radius: 8px; padding: 10px 12px; font-size: .9rem; }
.ne-item + .ne-item { margin-top: 8px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.downloads { display: flex; gap: 8px; flex-wrap: wrap; }

/* planes */
.plans { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); align-items: stretch; }
.plan { display: flex; flex-direction: column; gap: 10px; }
.plan.featured { border: 2px solid var(--accent-bg); }
.plan .price { font-size: 2rem; font-weight: 700; }
.plan .price small { font-size: .95rem; font-weight: 500; color: var(--muted); }
.plan ul { padding-left: 20px; margin: 4px 0 10px; flex: 1; }

/* modal */
.modal-back { position: fixed; inset: 0; background: rgba(7,30,36,.6); display: grid; place-items: center; z-index: 80; padding: 16px; }
.modal { background: var(--surface); color: var(--text); border-radius: var(--radius); max-width: 720px; width: 100%; max-height: 90vh; overflow: auto;
  padding: 26px; box-shadow: 0 20px 60px rgba(0,0,0,.35); border: 1px solid var(--border); }
.modal .clause p { font-size: .9rem; }
.draft { display: inline-block; background: var(--warn-soft); color: var(--warn); border: 1px solid var(--accent-bg); border-radius: 8px;
  padding: 4px 10px; font-weight: 650; font-size: .85rem; }
.spinner { width: 22px; height: 22px; border: 3px solid var(--border); border-top-color: var(--accent-bg); border-radius: 50%;
  animation: spin 1s linear infinite; display: inline-block; vertical-align: middle; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation: none; } .project-card { transition: none; } }

/* v0.6.0 demo */
.demo-banner { text-align: center; font-size: .8rem; padding: 5px 12px; background: var(--surface-2); color: var(--muted);
  border-bottom: 1px solid var(--border); }
.sample-box { margin-top: 18px; }
.sample { border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 14px; display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.sample p { margin: 0; }

/* v0.6.1 — correlaciones (litología vs GR, estado mecánico vs CCL) */
.corr-opt { margin-top: 18px; border-top: 1px dashed var(--border-strong); padding-top: 14px; }
.corr-opt .slot .tpl { display: flex; flex-wrap: wrap; gap: 6px 10px; margin-top: 6px; font-size: .82rem; }
.corr-sec + .corr-sec { margin-top: 18px; }
.corr-sec h3 { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.corr-na { border: 1px dashed var(--border-strong); border-radius: 10px; padding: 10px 12px; color: var(--muted); font-size: .92rem; }
.badge-damage { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }
table.compact th, table.compact td { padding: 6px 6px; font-size: .85rem; }
.form-grid { overflow-x: auto; }
.form-grid table { border-collapse: collapse; min-width: 640px; width: 100%; }
.form-grid td, .form-grid th { padding: 4px; border-bottom: 1px solid var(--border); font-size: .85rem; text-align: left; }
.form-grid input, .form-grid select { width: 100%; min-width: 70px; padding: 6px; border: 1px solid var(--border-strong); border-radius: 6px;
  background: var(--surface); color: var(--text); font: inherit; }
.modal.wide { max-width: 980px; }
@media (max-width: 640px) { .corr-opt .grid-3 { grid-template-columns: 1fr; } }
.native-trace { width: 100%; max-width: 560px; height: auto; background: var(--surface-2); border-radius: 8px; border: 1px solid var(--border); }