/* ============================================================
   VENCE — Sistema de diseño v1.1
   Fuente única de verdad. No dupliques CSS en las páginas.
   ============================================================ */

:root {
  /* Paleta */
  --bg-warm: #F7F4EF;
  --bg-card: #FFFFFF;
  --green: #2D6A4F;
  --green-dark: #1B4332;
  --green-light: #40916C;
  --copper: #B07D62;
  --copper-light: #C9A68C;
  --text: #1C1917;
  --text-secondary: #78716C;
  --text-muted: #A8A29E;
  --border: #E7E5E4;
  --border-light: #F0EEEB;

  /* Estados */
  --error: #DC2626;
  --error-bg: #FEF2F2;
  --success: #16A34A;
  --success-bg: #F0FDF4;
  --warn: #B45309;
  --warn-bg: #FFFBEB;

  /* Sombras y radios */
  --shadow: 0 1px 3px rgba(0,0,0,.04), 0 4px 12px rgba(0,0,0,.06);
  --shadow-hover: 0 4px 12px rgba(0,0,0,.08), 0 12px 32px rgba(0,0,0,.10);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;

  /* Tipografía */
  --font-body: 'DM Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-display: 'DM Serif Display', Georgia, serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background: var(--bg-warm);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}

.container { max-width: 720px; margin: 0 auto; padding: 0 20px; }
.container-wide { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* ---------- Accesibilidad ---------- */
:focus-visible { outline: 3px solid var(--green-light); 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); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--green); color: #fff; padding: 10px 16px; z-index: 999; border-radius: 0 0 8px 0; }
.skip-link:focus { left: 0; }

/* ---------- Tipografía ---------- */
h1, h2, h3, h4 { line-height: 1.25; }
.display { font-family: var(--font-display); letter-spacing: -.5px; }
.muted { color: var(--text-secondary); }
.small { font-size: 13px; }
.tiny { font-size: 12px; color: var(--text-muted); }
.center { text-align: center; }

/* ---------- Navbar ---------- */
.nav { position: sticky; top: 0; z-index: 100; background: rgba(247,244,239,.92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border-light); padding: 14px 0; }
.nav-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.logo { font-family: var(--font-display); font-size: 26px; color: var(--green); letter-spacing: -.5px; text-decoration: none; }
.logo span { color: var(--copper); }
.nav-tag { font-size: 11px; color: var(--text-muted); background: var(--bg-card); padding: 4px 10px; border-radius: 20px; border: 1px solid var(--border); font-weight: 500; }

/* ---------- Botón atrás ---------- */
.back-btn { position: fixed; top: 16px; left: 16px; z-index: 200; background: var(--bg-card); border: 1px solid var(--border); padding: 8px 16px; border-radius: var(--radius-sm); font-size: 13px; font-weight: 600; color: var(--text-secondary); cursor: pointer; box-shadow: var(--shadow); transition: all .2s; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.back-btn:hover { border-color: var(--green); color: var(--green); }
.back-btn svg { width: 16px; height: 16px; }

/* ---------- Botones ---------- */
.btn-primary, .btn-secondary, .btn-ghost {
  border-radius: var(--radius); font-weight: 600; cursor: pointer; transition: all .2s;
  text-decoration: none; display: inline-flex; align-items: center; gap: 10px; justify-content: center;
  font-family: inherit; width: 100%; max-width: 340px;
}
.btn-primary { background: var(--green); color: #fff; border: none; padding: 16px 32px; font-size: 16px; box-shadow: var(--shadow); }
.btn-primary:hover:not(:disabled) { background: var(--green-dark); transform: translateY(-1px); box-shadow: var(--shadow-hover); }
.btn-primary:disabled { background: var(--border); color: var(--text-muted); cursor: not-allowed; box-shadow: none; transform: none; }
.btn-secondary { background: var(--bg-card); color: var(--green); border: 2px solid var(--green); padding: 14px 28px; font-size: 15px; }
.btn-secondary:hover { background: var(--green); color: #fff; }
.btn-ghost { background: transparent; color: var(--text-secondary); border: 1px solid var(--border); padding: 12px 20px; font-size: 14px; }
.btn-ghost:hover { border-color: var(--green); color: var(--green); }
.btn-danger { background: var(--error); color: #fff; border: none; padding: 14px 24px; border-radius: var(--radius); font-weight: 600; cursor: pointer; font-family: inherit; font-size: 15px; }
.btn-row { display: flex; flex-direction: column; gap: 12px; align-items: center; }
@media (min-width: 640px) {
  .btn-row { flex-direction: row; justify-content: center; }
  .btn-primary, .btn-secondary { width: auto; max-width: none; }
}

/* ---------- Tarjetas ---------- */
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); margin-bottom: 20px; }
.card h2 { font-size: 19px; font-weight: 700; margin-bottom: 6px; }
.card > p { font-size: 14px; color: var(--text-secondary); margin-bottom: 18px; }
.card-flat { background: var(--bg-warm); border: 1px solid var(--border-light); border-radius: var(--radius-sm); padding: 16px; }

/* ---------- Formularios ---------- */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.required { color: var(--error); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 13px 14px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-size: 16px; font-family: inherit; background: var(--bg-card); color: var(--text); transition: border-color .2s;
}
.form-group input:focus, .form-group select:focus { border-color: var(--green); outline: none; }
.form-group input.invalid { border-color: var(--error); background: var(--error-bg); }
.form-group input.valid { border-color: var(--success); }
.hint { font-size: 12px; color: var(--text-muted); margin-top: 5px; line-height: 1.45; }
.field-error { font-size: 12px; color: var(--error); margin-top: 5px; display: none; }
.field-error.show { display: block; }
.grid-2 { display: grid; gap: 14px; }
@media (min-width: 560px) { .grid-2 { grid-template-columns: 1fr 1fr; } }

/* ---------- Consentimientos ---------- */
.consent-box { background: var(--bg-warm); border: 1.5px solid var(--border-light); border-radius: var(--radius-sm); padding: 14px; margin-bottom: 12px; transition: all .2s; }
.consent-box.missing { border-color: var(--copper); background: #FCF8F5; }
.consent-box.ok { border-color: var(--success); background: var(--success-bg); }
.consent-box label { display: flex; gap: 11px; align-items: flex-start; cursor: pointer; font-size: 13.5px; line-height: 1.5; }
.consent-box input[type=checkbox] { width: 20px; height: 20px; min-width: 20px; margin-top: 1px; accent-color: var(--green); cursor: pointer; }
.consent-detail { font-size: 11.5px; color: var(--text-muted); margin-top: 8px; padding-left: 31px; line-height: 1.5; }
.consent-detail a { color: var(--green); }

/* ---------- Zona de subida ---------- */
.upload-zone { border: 2px dashed var(--border); border-radius: var(--radius); padding: 32px 20px; text-align: center; cursor: pointer; transition: all .2s; background: var(--bg-warm); }
.upload-zone:hover, .upload-zone.dragover { border-color: var(--green); background: var(--success-bg); }
.upload-zone svg { width: 44px; height: 44px; color: var(--green); margin-bottom: 10px; }
.upload-zone h4 { font-size: 16px; margin-bottom: 6px; }
.upload-zone p { font-size: 13px; color: var(--text-muted); }
.upload-buttons { display: flex; gap: 8px; justify-content: center; margin-top: 16px; flex-wrap: wrap; }
.upload-btn { background: var(--bg-card); border: 1.5px solid var(--border); border-radius: var(--radius-sm); padding: 9px 15px; font-size: 13px; font-weight: 600; color: var(--text-secondary); cursor: pointer; display: inline-flex; align-items: center; gap: 6px; font-family: inherit; }
.upload-btn:hover { border-color: var(--green); color: var(--green); }
.upload-btn svg { width: 16px; height: 16px; margin: 0; color: currentColor; }
.hidden-inputs { display: none; }
.file-list { margin-top: 14px; }
.file-item { display: flex; align-items: center; gap: 10px; background: var(--bg-warm); border-radius: var(--radius-sm); padding: 10px 12px; margin-bottom: 8px; font-size: 13px; }
.file-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-remove { color: var(--error); cursor: pointer; font-weight: 700; padding: 0 4px; }

/* ---------- Badges y avisos ---------- */
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; padding: 5px 12px; border-radius: 20px; }
.badge.success { background: var(--success-bg); color: var(--success); }
.badge.pending { background: var(--warn-bg); color: var(--warn); }
.badge.neutral { background: var(--bg-warm); color: var(--text-secondary); border: 1px solid var(--border); }
.badge.green { background: var(--green); color: #fff; }

.notice { border-radius: var(--radius-sm); padding: 14px 16px; font-size: 13.5px; line-height: 1.55; margin: 16px 0; border: 1px solid; }
.notice.info { background: var(--bg-warm); border-color: var(--border-light); color: var(--text-secondary); }
.notice.warn { background: var(--warn-bg); border-color: #FDE68A; color: #78350F; }
.notice.ok { background: var(--success-bg); border-color: #BBF7D0; color: #14532D; }
.notice strong { color: inherit; }

/* ---------- Tablas ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.vence { width: 100%; border-collapse: collapse; font-size: 13.5px; }
table.vence th { text-align: left; font-weight: 600; color: var(--text-secondary); font-size: 12px; text-transform: uppercase; letter-spacing: .4px; padding: 10px 12px; border-bottom: 1.5px solid var(--border); white-space: nowrap; }
table.vence td { padding: 12px; border-bottom: 1px solid var(--border-light); vertical-align: middle; }
table.vence tr.best td { background: var(--success-bg); }
table.vence tr.current td { background: var(--warn-bg); }

/* ---------- Cifras ---------- */
.savings-big { font-family: var(--font-display); font-size: clamp(40px, 11vw, 60px); color: var(--green); line-height: 1; }
.savings-big span { font-family: var(--font-body); font-size: 17px; color: var(--text-muted); font-weight: 400; }
.metric { background: var(--bg-warm); border-radius: var(--radius-sm); padding: 16px; text-align: center; }
.metric .val { font-family: var(--font-display); font-size: 26px; color: var(--green); line-height: 1.1; }
.metric .lab { font-size: 11.5px; color: var(--text-muted); margin-top: 4px; text-transform: uppercase; letter-spacing: .4px; }
.metric-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
@media (min-width: 560px) { .metric-grid { grid-template-columns: repeat(4, 1fr); } }

/* ---------- Pasos ---------- */
.steps-bar { display: flex; align-items: center; justify-content: center; gap: 8px; margin-bottom: 30px; }
.step-dot { width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; border: 2px solid var(--border); color: var(--text-muted); background: var(--bg-card); transition: all .3s; }
.step-dot.active { border-color: var(--green); background: var(--green); color: #fff; }
.step-dot.done { border-color: var(--green); background: var(--bg-card); color: var(--green); }
.step-line { flex: 1; max-width: 56px; height: 2px; background: var(--border); transition: background .3s; }
.step-line.done { background: var(--green); }

/* ---------- Header de página interior ---------- */
.page-header { padding: 62px 0 22px; text-align: center; }
.page-header .logo { display: inline-block; font-size: 28px; margin-bottom: 6px; }
.page-header p { color: var(--text-secondary); font-size: 15px; }

/* ---------- Footer ---------- */
.footer { padding: 32px 0 48px; text-align: center; border-top: 1px solid var(--border-light); margin-top: 40px; }
.footer-links { display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; margin-bottom: 14px; }
.footer-links a { color: var(--text-secondary); font-size: 13px; text-decoration: none; }
.footer-links a:hover { color: var(--green); }
.footer-copy { font-size: 12px; color: var(--text-muted); line-height: 1.6; }

/* ---------- Utilidades ---------- */
.hidden { display: none !important; }
.spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid currentColor; border-top-color: transparent; border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .5s ease-out, transform .5s ease-out; }
.reveal.in { opacity: 1; transform: none; }
.mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; } .mb-16 { margin-bottom: 16px; } .mb-24 { margin-bottom: 24px; }