/* ==========================================================================
   Ayuno Inteligente — Design System
   Cálido, editorial, flat. Mobile-first con sidebar en desktop.
   ========================================================================== */

:root {
  --bg: #FDFBF8;
  --bg-2: #F7F3EC;
  --bg-3: #F0EAE0;
  --surface: #FFFFFF;

  --primary: #B5563A;        /* terracota */
  --primary-hover: #9C4830;
  --primary-light: #F9EAE4;
  --primary-text: #7A331E;
  --primary-deep: #7A331E;

  --green: #2E7D5B;          /* éxito / salud */
  --green-light: #E4F2EB;
  --amber: #B07C24;          /* atención suave */
  --amber-light: #F8EFDC;
  --blue: #3D6B8E;
  --blue-light: #E7EFF5;

  --ink: #241F1A;
  --ink-2: #6E6459;
  --ink-3: #A39889;
  --line: rgba(60, 42, 24, 0.10);
  --line-strong: rgba(60, 42, 24, 0.18);

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

  --r-card: 14px;
  --r-btn: 10px;
  --r-pill: 22px;
  --nav-h: 62px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select { font-family: inherit; font-size: inherit; color: inherit; }
h1, h2, h3 { font-weight: 500; line-height: 1.25; }
.serif { font-family: var(--font-display); }
a { color: var(--primary); }

/* ---------- Login ---------- */
.login-wrap {
  min-height: 100vh; min-height: 100dvh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 28px 20px 48px;
  background:
    radial-gradient(ellipse 90% 55% at 50% -10%, #F5E7DC 0%, transparent 60%),
    var(--bg);
}
.login-card { width: 100%; max-width: 400px; }
.login-logo {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  margin-bottom: 10px;
}
.login-logo .mark {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
}
.login-title {
  font-family: var(--font-display);
  font-size: 34px; text-align: center; color: var(--ink);
  letter-spacing: -0.01em;
}
.login-sub {
  text-align: center; color: var(--ink-2); font-size: 14px;
  margin: 8px 0 28px;
}
.cred-box {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-card); padding: 16px 18px; margin-bottom: 18px;
}
.cred-box .cred-head {
  font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--green); display: flex; align-items: center; gap: 6px; margin-bottom: 10px;
}
.cred-row { display: flex; justify-content: space-between; align-items: baseline; padding: 4px 0; }
.cred-row .k { color: var(--ink-2); font-size: 13px; }
.cred-row .v { font-weight: 500; font-size: 14px; font-variant-ligatures: none; }
.field { margin-bottom: 14px; }
.field label {
  display: block; font-size: 12px; font-weight: 500; color: var(--ink-2);
  margin-bottom: 6px; letter-spacing: 0.02em;
}
.field input {
  width: 100%; padding: 13px 14px;
  border: 1px solid var(--line-strong); border-radius: var(--r-btn);
  background: var(--surface); font-size: 15px; outline: none;
  transition: border-color .15s;
}
.field input:focus { border-color: var(--primary); }
.btn {
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; padding: 14px 16px;
  border-radius: var(--r-btn); font-size: 15px; font-weight: 500;
  transition: background .15s, transform .05s;
}
.btn:active { transform: scale(0.99); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-ghost {
  background: var(--surface); color: var(--ink);
  border: 1px solid var(--line-strong); margin-top: 10px;
}
.btn-ghost:hover { background: var(--bg-2); }
.login-error {
  background: var(--primary-light); color: var(--primary-deep);
  border-radius: var(--r-btn); padding: 10px 14px; font-size: 13px;
  margin-bottom: 14px; display: none;
}
.login-error.show { display: block; }
.login-foot { text-align: center; color: var(--ink-3); font-size: 12px; margin-top: 26px; }

/* ---------- App shell ---------- */
.shell { min-height: 100vh; min-height: 100dvh; }
.main {
  padding: 20px 18px calc(var(--nav-h) + 34px);
  max-width: 680px; margin: 0 auto;
}

/* Bottom nav (mobile) */
.bottomnav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 50;
  background: rgba(253, 251, 248, 0.94);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  display: flex; height: calc(var(--nav-h) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
}
.bottomnav button {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 3px; font-size: 10.5px; font-weight: 500; color: var(--ink-3);
}
.bottomnav button.active { color: var(--primary); }
.bottomnav svg { width: 21px; height: 21px; }

/* Sidebar (desktop) */
.sidebar { display: none; }
@media (min-width: 980px) {
  .shell { display: grid; grid-template-columns: 250px 1fr; }
  .bottomnav { display: none; }
  .main { padding: 36px 40px 80px; max-width: 760px; }
  .sidebar {
    display: flex; flex-direction: column;
    position: sticky; top: 0; height: 100vh;
    border-right: 1px solid var(--line);
    background: var(--bg); padding: 26px 14px 20px;
  }
  .sidebar .brand {
    display: flex; align-items: center; gap: 10px;
    padding: 0 10px 22px; font-family: var(--font-display); font-size: 19px;
  }
  .sidebar .brand .mark {
    width: 32px; height: 32px; border-radius: 50%;
    background: var(--primary); color: #fff;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
  }
  .sidebar nav { display: flex; flex-direction: column; gap: 2px; }
  .sidebar nav button {
    display: flex; align-items: center; gap: 11px;
    padding: 10px 12px; border-radius: 9px;
    font-size: 14px; font-weight: 500; color: var(--ink-2); text-align: left;
  }
  .sidebar nav button:hover { background: var(--bg-2); }
  .sidebar nav button.active { background: var(--primary-light); color: var(--primary-deep); }
  .sidebar nav svg { width: 19px; height: 19px; }
  .sidebar .spacer { flex: 1; }
  .sidebar .logout {
    display: flex; align-items: center; gap: 10px; padding: 10px 12px;
    color: var(--ink-3); font-size: 13px; border-radius: 9px;
  }
  .sidebar .logout:hover { background: var(--bg-2); color: var(--ink-2); }
}

/* ---------- Componentes ---------- */
.page-title { font-family: var(--font-display); font-size: 27px; margin-bottom: 4px; }
.page-sub { color: var(--ink-2); font-size: 14px; margin-bottom: 22px; }
.eyebrow {
  font-size: 11px; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--primary); margin-bottom: 8px;
}
.card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-card); padding: 18px;
}
.card + .card { margin-top: 12px; }
.card-click { cursor: pointer; transition: border-color .15s, background .15s; }
.card-click:hover { border-color: var(--line-strong); }

.pill {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11.5px; font-weight: 500; padding: 4px 11px; border-radius: var(--r-pill);
}
.pill-green { background: var(--green-light); color: var(--green); }
.pill-amber { background: var(--amber-light); color: var(--amber); }
.pill-primary { background: var(--primary-light); color: var(--primary-deep); }
.pill-blue { background: var(--blue-light); color: var(--blue); }
.pill-muted { background: var(--bg-3); color: var(--ink-2); }

.progressbar { height: 6px; background: var(--bg-3); border-radius: 3px; overflow: hidden; }
.progressbar > div { height: 100%; background: var(--green); border-radius: 3px; transition: width .4s ease; }
.progressbar.pb-primary > div { background: var(--primary); }

.section-label {
  font-size: 11px; font-weight: 600; letter-spacing: 0.09em; text-transform: uppercase;
  color: var(--ink-3); margin: 26px 0 10px;
}

/* Lista de módulos */
.mod-row {
  display: flex; align-items: center; gap: 14px;
  padding: 15px 16px; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--r-card);
  cursor: pointer; transition: border-color .15s;
  margin-bottom: 10px;
}
.mod-row:hover { border-color: var(--line-strong); }
.mod-num {
  width: 42px; height: 42px; border-radius: 12px; flex-shrink: 0;
  background: var(--bg-2); display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 17px; color: var(--primary-deep);
}
.mod-row.done .mod-num { background: var(--green-light); color: var(--green); }
.mod-info { flex: 1; min-width: 0; }
.mod-info h3 { font-size: 15px; margin-bottom: 2px; }
.mod-info p { font-size: 12.5px; color: var(--ink-2); }
.mod-meta { font-size: 11.5px; color: var(--ink-3); flex-shrink: 0; text-align: right; }

/* Lección */
.lesson-list { display: flex; flex-direction: column; gap: 8px; }
.lesson-row {
  display: flex; align-items: center; gap: 12px;
  padding: 13px 15px; background: var(--surface);
  border: 1px solid var(--line); border-radius: 12px; cursor: pointer;
}
.lesson-row:hover { border-color: var(--line-strong); }
.lesson-check {
  width: 22px; height: 22px; border-radius: 50%; flex-shrink: 0;
  border: 1.5px solid var(--line-strong);
  display: flex; align-items: center; justify-content: center; color: transparent;
}
.lesson-row.done .lesson-check { background: var(--green); border-color: var(--green); color: #fff; }
.lesson-row .t { flex: 1; font-size: 14px; font-weight: 500; }
.lesson-row .m { font-size: 11.5px; color: var(--ink-3); }

/* Contenido de lección (prosa) */
.prose { font-size: 15px; }
.prose h2 {
  font-family: var(--font-display); font-size: 21px;
  margin: 30px 0 10px; color: var(--ink);
}
.prose h3 { font-size: 16px; font-weight: 600; margin: 22px 0 8px; }
.prose p { margin-bottom: 14px; color: #3A342D; }
.prose ul, .prose ol { margin: 0 0 16px 22px; }
.prose li { margin-bottom: 7px; color: #3A342D; }
.prose strong { font-weight: 600; color: var(--ink); }
.prose .box {
  border-radius: 12px; padding: 15px 17px; margin: 18px 0;
  font-size: 14px;
}
.prose .box p:last-child, .prose .box ul:last-child { margin-bottom: 0; }
.prose .box-tip { background: var(--green-light); }
.prose .box-tip strong { color: var(--green); }
.prose .box-warn { background: var(--amber-light); }
.prose .box-warn strong { color: var(--amber); }
.prose .box-alert { background: var(--primary-light); }
.prose .box-alert strong { color: var(--primary-deep); }
.prose .box-info { background: var(--blue-light); }
.prose .box-info strong { color: var(--blue); }
.prose table {
  width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 13.5px;
}
.prose th {
  text-align: left; font-weight: 600; font-size: 12px;
  padding: 8px 10px; border-bottom: 1.5px solid var(--line-strong);
  text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-2);
}
.prose td { padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table-scroll { overflow-x: auto; margin: 16px 0; }
.table-scroll table { margin: 0; min-width: 480px; }

.backlink {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 500; color: var(--ink-2);
  padding: 6px 0; margin-bottom: 14px;
}
.backlink:hover { color: var(--ink); }

.lesson-actions { margin-top: 30px; display: flex; flex-direction: column; gap: 10px; }
.btn-complete { background: var(--green); color: #fff; }
.btn-complete:hover { background: #25664A; }
.btn-complete.is-done { background: var(--green-light); color: var(--green); }

/* ---------- Cronómetro ---------- */
.timer-hero {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 20px; padding: 30px 20px; text-align: center;
}
.timer-ring-wrap { position: relative; width: 230px; height: 230px; margin: 0 auto 18px; }
.timer-ring-wrap svg { transform: rotate(-90deg); }
.timer-ring-bg { stroke: var(--bg-3); }
.timer-ring-fg { stroke: var(--primary); transition: stroke-dashoffset 1s linear; }
.timer-ring-fg.eating { stroke: var(--green); }
.timer-center {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 2px;
}
.timer-phase { font-size: 11px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-3); }
.timer-time { font-size: 40px; font-weight: 600; font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.timer-goal { font-size: 12.5px; color: var(--ink-2); }
.timer-stage { margin-top: 4px; }
.proto-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 18px 0; }
.proto-btn {
  padding: 10px 4px; border-radius: 10px; border: 1px solid var(--line-strong);
  background: var(--surface); font-size: 13px; font-weight: 600;
}
.proto-btn small { display: block; font-size: 10px; font-weight: 400; color: var(--ink-3); }
.proto-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.proto-btn.active small { color: rgba(255,255,255,0.75); }
.stage-strip { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }
.stage-row {
  display: flex; gap: 12px; align-items: flex-start; text-align: left;
  padding: 11px 14px; border-radius: 11px; background: var(--bg-2);
  font-size: 13px;
}
.stage-row.reached { background: var(--green-light); }
.stage-row .h { font-variant-numeric: tabular-nums; font-weight: 600; flex-shrink: 0; width: 34px; }
.stage-row .d strong { display: block; font-size: 13px; }
.stage-row .d span { color: var(--ink-2); font-size: 12px; }

/* ---------- Herramientas: peso / hábitos ---------- */
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 14px; }
.stat-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px; padding: 13px 8px; text-align: center;
}
.stat-card .v { font-size: 20px; font-weight: 600; font-variant-numeric: tabular-nums; }
.stat-card .k { font-size: 10.5px; color: var(--ink-2); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500; margin-top: 2px; }
.chart-box { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-card); padding: 16px; }
.weight-form { display: flex; gap: 8px; margin-top: 12px; }
.weight-form input { flex: 1; padding: 12px 14px; border: 1px solid var(--line-strong); border-radius: var(--r-btn); outline: none; }
.weight-form input:focus { border-color: var(--primary); }
.weight-form button { flex-shrink: 0; width: auto; padding: 12px 18px; }
.habit-row {
  display: flex; align-items: center; gap: 12px;
  padding: 13px 15px; background: var(--surface);
  border: 1px solid var(--line); border-radius: 12px; cursor: pointer;
  margin-bottom: 8px; user-select: none;
}
.habit-row .t { flex: 1; font-size: 14px; }
.habit-row.done .t { color: var(--ink-3); text-decoration: line-through; }
.habit-row .lesson-check { pointer-events: none; }
.habit-row.done .lesson-check { background: var(--green); border-color: var(--green); color: #fff; }

/* ---------- Plan 30 días ---------- */
.week-tabs { display: flex; gap: 6px; margin-bottom: 16px; overflow-x: auto; padding-bottom: 2px; }
.week-tab {
  flex-shrink: 0; padding: 8px 15px; border-radius: var(--r-pill);
  border: 1px solid var(--line-strong); font-size: 13px; font-weight: 500;
  background: var(--surface); color: var(--ink-2); white-space: nowrap;
}
.week-tab.active { background: var(--ink); border-color: var(--ink); color: #fff; }
.day-row {
  display: flex; gap: 13px; align-items: flex-start;
  padding: 14px 15px; background: var(--surface);
  border: 1px solid var(--line); border-radius: 12px; margin-bottom: 8px;
  cursor: pointer;
}
.day-num {
  width: 38px; height: 38px; border-radius: 10px; flex-shrink: 0;
  background: var(--bg-2); display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  font-size: 14px; font-weight: 600; color: var(--ink-2);
}
.day-num small { font-size: 8.5px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; }
.day-row.done .day-num { background: var(--green-light); color: var(--green); }
.day-body { flex: 1; }
.day-body .proto { font-size: 11.5px; font-weight: 600; color: var(--primary-deep); margin-bottom: 1px; }
.day-body .t { font-size: 14px; font-weight: 500; }
.day-body .d { font-size: 12.5px; color: var(--ink-2); margin-top: 2px; }

/* ---------- Recetas ---------- */
.chip-row { display: flex; gap: 7px; overflow-x: auto; margin-bottom: 16px; padding-bottom: 2px; }
.chip {
  flex-shrink: 0; padding: 7px 14px; border-radius: var(--r-pill);
  border: 1px solid var(--line-strong); background: var(--surface);
  font-size: 12.5px; font-weight: 500; color: var(--ink-2); white-space: nowrap;
}
.chip.active { background: var(--ink); border-color: var(--ink); color: #fff; }
.recipe-card {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--r-card); padding: 16px 17px; margin-bottom: 10px; cursor: pointer;
}
.recipe-card:hover { border-color: var(--line-strong); }
.recipe-card h3 { font-size: 15px; margin: 6px 0 3px; }
.recipe-card .d { font-size: 12.5px; color: var(--ink-2); }
.recipe-meta { display: flex; gap: 12px; margin-top: 9px; font-size: 11.5px; color: var(--ink-3); }
.recipe-detail .eyebrow { margin-bottom: 4px; }
.recipe-detail h1 { font-family: var(--font-display); font-size: 24px; margin-bottom: 6px; }
.macro-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 16px 0; }
.macro-cell { background: var(--bg-2); border-radius: 10px; padding: 10px 6px; text-align: center; }
.macro-cell .v { font-weight: 600; font-size: 15px; }
.macro-cell .k { font-size: 10px; color: var(--ink-2); text-transform: uppercase; letter-spacing: 0.04em; }

/* ---------- FAQ ---------- */
.faq-item { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; margin-bottom: 8px; overflow: hidden; }
.faq-q {
  width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 15px 16px; font-size: 14px; font-weight: 500; text-align: left;
}
.faq-a { padding: 0 16px 15px; font-size: 13.5px; color: #3A342D; display: none; }
.faq-item.open .faq-a { display: block; }
.faq-item .chev { transition: transform .2s; flex-shrink: 0; color: var(--ink-3); }
.faq-item.open .chev { transform: rotate(180deg); }

/* Home hero */
.hero-card {
  background: linear-gradient(135deg, #FBF1E9 0%, #F7F3EC 100%);
  border: 1px solid var(--line);
  border-radius: 18px; padding: 22px 20px; margin-bottom: 16px;
}
.hero-card h2 { font-family: var(--font-display); font-size: 21px; margin-bottom: 4px; }
.hero-card p { font-size: 13.5px; color: var(--ink-2); margin-bottom: 14px; }
.hero-card .btn { width: auto; display: inline-flex; padding: 11px 20px; font-size: 14px; }

.disclaimer {
  margin-top: 30px; padding: 14px 16px; background: var(--bg-2);
  border-radius: 12px; font-size: 12px; color: var(--ink-2); line-height: 1.55;
}

.fade-in { animation: fadeIn .25s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }