/* ============================================
   E-mail IA — Styles

   DESIGN DIRECTION: Editorial Print (paper)
   Palette/type/layout: warm paper #f6f4ee, ink #1c1813, ONE oxblood accent
     #7c2d2d; display + body in a treated system serif, mono for labels/folio;
     hairline rules, numbered sections (§01…), flush-left, wide margins — a
     well-set magazine/correspondence spread, never centred AI-slop cards.
   Signature: the generated e-mail is rendered as a typeset letter on paper,
     headed by a mono folio strip (ASSUNTO · TOM · DATA) under a letterhead rule.
   ============================================ */

:root {
  /* Surfaces — paper */
  --paper: #f6f4ee;
  --paper-2: #efece2;        /* recessed inputs */
  --paper-card: #fffdf7;     /* raised letter / cards */
  --rule: #ddd6c6;           /* hairline */
  --rule-strong: #c7bfac;

  /* Ink */
  --ink: #1c1813;
  --ink-soft: #3a342b;
  --ink-muted: #5b5349;      /* ≥4.5:1 on paper */
  --ink-faint: #8a8173;

  /* Accent — oxblood */
  --accent: #7c2d2d;
  --accent-deep: #5e2020;
  --accent-soft: rgba(124, 45, 45, .08);
  --accent-line: rgba(124, 45, 45, .28);

  /* Status */
  --good: #2f6b46;
  --low: #9a2b2b;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 36px;
  --space-2xl: 56px;

  /* Type stacks */
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Times New Roman", serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, "IBM Plex Mono", Menlo, Consolas, monospace;

  --radius: 2px;            /* editorial: almost square */
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--serif);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  min-height: 100vh;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

/* faint paper grain / vignette */
.bg-gradient {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse at 50% -10%, rgba(255,255,255,.6) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 120%, rgba(124,45,45,.04) 0%, transparent 50%),
    var(--paper);
}

.mono {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* Screens */
.screen { display: none; min-height: 100vh; }
.screen.active { display: flex; flex-direction: column; }

/* ============================================
   MEMBERSHIP GATE
   ============================================ */
#gate-screen { align-items: center; justify-content: center; padding: var(--space-lg); }

.gate-container { width: 100%; max-width: 460px; }

.gate-header { margin-bottom: var(--space-xl); }

/* Editorial folio kicker above the title */
.gate-header::before {
  content: "GÊNESIS IA — N.º 05";
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .26em;
  color: var(--accent);
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-md);
  border-bottom: 1px solid var(--rule);
}

/* legacy class name kept; restyled solid ink serif (no gradient — anti-slop) */
.gradient-text {
  font-family: var(--serif);
  font-size: clamp(34px, 6vw, 52px);
  font-weight: 700;
  letter-spacing: -.015em;
  line-height: 1.05;
  color: var(--ink);
  margin-bottom: var(--space-md);
  text-wrap: balance;
}

.subtitle {
  color: var(--ink-muted);
  font-size: 17px;
  font-style: italic;
  margin-bottom: var(--space-md);
  max-width: 40ch;
}

.community-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  padding: 6px 12px;
  border-radius: var(--radius);
}

/* Gate form */
.gate-form {
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: var(--space-xl);
  text-align: left;
  margin-bottom: var(--space-lg);
  box-shadow: 0 1px 0 var(--rule), 0 18px 40px -28px rgba(28,24,19,.4);
}

.form-group { margin-bottom: var(--space-lg); }

.form-group label,
.field-label {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: var(--space-sm);
}

.form-group input,
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--paper-2);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 16px;
  font-family: var(--serif);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}

.form-group input:focus,
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.form-group input::placeholder,
.field input::placeholder,
.field textarea::placeholder { color: var(--ink-faint); }

/* Buttons */
.btn-primary {
  width: 100%;
  padding: 14px 24px;
  background: var(--accent);
  color: #fbf7ef;
  border: 1px solid var(--accent-deep);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 600;
  cursor: pointer;
  transition: background .18s, transform .08s;
  min-height: 48px;
}
.btn-primary:hover { background: var(--accent-deep); }
.btn-primary:active { transform: translateY(1px); }
.btn-primary:disabled { opacity: .45; cursor: not-allowed; }

/* Accessible focus ring — accent, consistent with palette */
a:focus-visible,
button:focus-visible,
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.btn-danger:focus-visible,
.btn-icon:focus-visible,
.tool-btn:focus-visible,
.copy-mini:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-secondary {
  width: 100%;
  padding: 13px 24px;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  font-size: 13px;
  font-family: var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color .2s, background .2s;
  min-height: 48px;
}
.btn-secondary:hover { border-color: var(--ink); background: var(--paper-2); }

.btn-danger {
  width: 100%;
  padding: 12px 24px;
  background: transparent;
  color: var(--low);
  border: 1px solid var(--accent-line);
  border-radius: var(--radius);
  font-size: 13px;
  font-family: var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
  min-height: 44px;
}
.btn-danger:hover { background: var(--accent-soft); }

.btn-icon {
  background: none;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  color: var(--ink-muted);
  padding: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  transition: border-color .2s, color .2s;
}
.btn-icon:hover { border-color: var(--ink); color: var(--ink); }

.error-message {
  color: var(--low);
  font-size: 14px;
  margin-top: var(--space-md);
  font-style: italic;
}

.gate-footer { color: var(--ink-muted); font-size: 14px; }
.gate-footer a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.gate-footer a:hover { color: var(--accent-deep); }

/* ============================================
   API KEY SETUP SCREEN
   ============================================ */
#key-screen { align-items: center; justify-content: center; padding: var(--space-lg); }
.key-container { width: 100%; max-width: 560px; }

.key-container::before {
  content: "PASSO 02 — CREDENCIAIS";
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--accent);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--rule);
}

.key-container h2 {
  font-family: var(--serif);
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 700;
  letter-spacing: -.01em;
  margin-bottom: var(--space-sm);
}

.key-inputs { display: flex; flex-direction: column; gap: var(--space-md); margin: var(--space-xl) 0; }

.key-input-group {
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: var(--space-lg);
}
.key-input-group label {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: var(--space-sm);
}

.key-input-wrapper { position: relative; display: flex; gap: var(--space-sm); }
.key-input-wrapper input {
  flex: 1;
  padding: 12px 14px;
  background: var(--paper-2);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  color: var(--ink);
  font-size: 14px;
  font-family: var(--mono);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.key-input-wrapper input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.key-toggle {
  background: var(--paper-2);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  color: var(--ink-muted);
  padding: 0 12px;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  min-width: 56px;
}
.key-toggle:hover { border-color: var(--ink); color: var(--ink); }

.key-status { font-size: 12px; margin-top: var(--space-xs); color: var(--ink-muted); font-style: italic; }
.key-status.saved { color: var(--good); }

.key-actions { display: flex; flex-direction: column; gap: var(--space-md); }

.key-info { margin-top: var(--space-xl); color: var(--ink-muted); font-size: 15px; }
.key-info summary { cursor: pointer; color: var(--accent); font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.key-info-content {
  margin-top: var(--space-md);
  padding: var(--space-lg);
  background: var(--paper-card);
  border-radius: var(--radius);
  border: 1px solid var(--rule);
}
.key-info-content p { margin-bottom: var(--space-sm); }
.key-info-content code { background: var(--paper-2); padding: 2px 6px; border-radius: var(--radius); font-family: var(--mono); font-size: 13px; }

/* ============================================
   APP SCREEN
   ============================================ */
#app-screen { min-height: 100vh; }

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-bottom: 1px solid var(--rule-strong);
  position: sticky;
  top: 0;
  background: rgba(246, 244, 238, .92);
  backdrop-filter: blur(8px);
  z-index: 100;
}

.app-title {
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.app-title::before {
  content: "✉";
  color: var(--accent);
  font-size: 18px;
}

.header-right { display: flex; gap: var(--space-sm); }

.app-main {
  flex: 1;
  padding: var(--space-2xl) var(--space-xl);
  max-width: 1080px;
  margin: 0 auto;
  width: 100%;
}

.app-footer {
  text-align: center;
  padding: var(--space-xl);
  color: var(--ink-muted);
  font-size: 13px;
  border-top: 1px solid var(--rule);
}
.footer-links { margin-top: 8px; }
.footer-links a { color: var(--ink-muted); text-decoration: none; font-size: 12px; font-family: var(--mono); letter-spacing: .05em; }
.footer-links a:hover { color: var(--accent); text-decoration: underline; }
.footer-sep { margin: 0 10px; color: var(--ink-faint); }

/* Editorial masthead intro on app screen */
.masthead {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 2px solid var(--ink);
}
.masthead .kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .26em;
  text-transform: uppercase;
  color: var(--accent);
}
.masthead h2 {
  font-family: var(--serif);
  font-size: clamp(28px, 4.4vw, 42px);
  font-weight: 700;
  letter-spacing: -.015em;
  line-height: 1.08;
  margin-top: var(--space-sm);
  text-wrap: balance;
}
.masthead p {
  color: var(--ink-muted);
  font-style: italic;
  font-size: 17px;
  margin-top: var(--space-sm);
  max-width: 60ch;
}

/* Two-column editorial layout */
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: var(--space-2xl);
  align-items: start;
}

/* Section heading with § number */
.sec-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  border-bottom: 1px solid var(--rule-strong);
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-lg);
}
.sec-head .sec-num {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--accent);
}
.sec-head h3 {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 700;
}

.fieldset { margin-bottom: var(--space-2xl); }

.field { margin-bottom: var(--space-lg); }
.field .hint { font-size: 13px; color: var(--ink-muted); margin-top: 6px; font-style: italic; }
textarea { resize: vertical; min-height: 120px; line-height: 1.6; }
#email-context { min-height: 140px; }

.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }

.char-count { font-family: var(--mono); font-size: 11px; letter-spacing: .08em; color: var(--ink-muted); margin-top: 6px; }

.compose-actions { display: flex; gap: var(--space-md); margin-top: var(--space-md); }
.compose-actions .btn-primary { flex: 2; }
.compose-actions .btn-secondary { flex: 1; }

/* No-key notice */
.no-key-warning {
  display: none;
  margin-bottom: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  color: var(--accent-deep);
  font-size: 14px;
}
.no-key-warning.active { display: block; }
.no-key-warning a { color: var(--accent); font-weight: 700; text-decoration: underline; cursor: pointer; }

/* ============================================
   OUTPUT — the typeset letter (signature element)
   ============================================ */
.result { position: sticky; top: 88px; }

.loading-block {
  display: none;
  padding: var(--space-2xl);
  text-align: center;
  border: 1px dashed var(--rule-strong);
  border-radius: var(--radius);
  color: var(--ink-muted);
}
.loading-block.active { display: block; }
.loading-block .mono { display: block; margin-bottom: var(--space-md); color: var(--ink-muted); }
.pen {
  width: 26px; height: 26px; margin: 0 auto var(--space-md);
  border: 2px solid var(--accent); border-top-color: transparent;
  border-radius: 50%; animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state {
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
  border: 1px dashed var(--rule-strong);
  border-radius: var(--radius);
  color: var(--ink-faint);
}
.empty-state .glyph { font-size: 40px; color: var(--rule-strong); }
.empty-state p { margin-top: var(--space-md); font-style: italic; font-size: 15px; color: var(--ink-muted); }

.letter { display: none; }
.letter.active { display: block; animation: fadeIn .45s ease-out; }

/* folio strip — signature mono metadata */
.folio {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--ink);
  margin-bottom: var(--space-lg);
}
.folio .folio-sep { color: var(--accent); }
.folio .folio-tail { flex: 1; height: 1px; }

/* subject block */
.subject-block { margin-bottom: var(--space-xl); }
.subject-block .field-label { margin-bottom: var(--space-xs); }
.subject-main {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  justify-content: space-between;
}
.subject-main h2 {
  font-family: var(--serif);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--ink);
}
.alt-subjects { margin-top: var(--space-md); }
.alt-subjects .field-label { margin-bottom: var(--space-sm); }
.alt-list { list-style: none; display: flex; flex-direction: column; gap: var(--space-sm); }
.alt-list li {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
  padding: 10px 14px;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  font-size: 15px;
}

/* the letter body — paper sheet */
.letter-sheet {
  background: var(--paper-card);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: var(--space-2xl) var(--space-xl);
  box-shadow: 0 1px 0 var(--rule), 0 24px 50px -34px rgba(28,24,19,.45);
}
.letter-sheet .letterhead {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding-bottom: var(--space-md);
  margin-bottom: var(--space-lg);
  border-bottom: 1px solid var(--rule);
}
.letter-body { font-size: 17px; line-height: 1.8; color: var(--ink-soft); }
.letter-body p { margin-bottom: 1.05em; }
.letter-body p:first-child::first-letter {
  font-size: 3.1em;
  line-height: .82;
  float: left;
  padding: 4px 10px 0 0;
  color: var(--accent);
  font-weight: 700;
}
.letter-body .placeholder {
  background: var(--accent-soft);
  border-bottom: 1px solid var(--accent-line);
  color: var(--accent-deep);
  padding: 0 3px;
  font-weight: 600;
  font-family: var(--mono);
  font-size: .82em;
}

/* tips */
.tips-block { margin-top: var(--space-xl); padding-top: var(--space-lg); border-top: 1px solid var(--rule); }
.tips-list { list-style: none; }
.tips-list li {
  position: relative;
  padding-left: 22px;
  margin-bottom: var(--space-sm);
  font-size: 14px;
  color: var(--ink-muted);
}
.tips-list li::before { content: "§"; position: absolute; left: 0; color: var(--accent); font-weight: 700; }

/* toolbar */
.letter-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}
.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 14px;
  background: transparent;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color .2s, background .2s, color .2s;
  min-height: 40px;
}
.tool-btn:hover { border-color: var(--ink); background: var(--paper-2); }
.tool-btn.copied { border-color: var(--good); color: var(--good); }

.copy-mini {
  background: none;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  color: var(--ink-muted);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 4px 8px;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}
.copy-mini:hover { border-color: var(--ink); color: var(--ink); }
.copy-mini.copied { border-color: var(--good); color: var(--good); }

/* ============================================
   MODAL
   ============================================ */
.modal { position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center; }
.modal-overlay { position: absolute; inset: 0; background: rgba(28,24,19,.45); backdrop-filter: blur(3px); }
.modal-content {
  position: relative;
  background: var(--paper-card);
  border: 1px solid var(--rule-strong);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: var(--space-xl);
  width: 90%;
  max-width: 500px;
  max-height: 84vh;
  overflow-y: auto;
}
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-lg); }
.modal-header h3 { font-family: var(--serif); font-size: 22px; font-weight: 700; }
.modal-actions { display: flex; flex-direction: column; gap: var(--space-md); margin-top: var(--space-lg); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; gap: var(--space-2xl); }
  .result { position: static; }
}
@media (max-width: 768px) {
  body { font-size: 16px; }
  .app-main { padding: var(--space-xl) var(--space-md); }
  .app-header { padding: var(--space-md); }
  .gate-form { padding: var(--space-lg); }
  .letter-sheet { padding: var(--space-xl) var(--space-md); }
}
@media (max-width: 480px) {
  .gate-container, .key-container { padding: 0 var(--space-sm); }
  .row-2 { grid-template-columns: 1fr; }
  .compose-actions { flex-direction: column; }
  .app-title { font-size: 19px; }
  .letter-toolbar { gap: var(--space-xs); }
  .tool-btn { padding: 9px 12px; font-size: 10px; }
}

/* ============================================
   ANIMATIONS — restrained, page-turn calm
   ============================================ */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
.screen.active { animation: fadeIn .4s ease-out; }

/* ============================================
   PRINT — clean letter only
   ============================================ */
@media print {
  .bg-gradient, .app-header, .app-footer, .compose, .letter-toolbar,
  .no-key-warning, .alt-subjects, .copy-mini, .btn-icon { display: none !important; }
  body { background: #fff; color: #000; font-size: 12pt; }
  .layout { display: block; }
  .letter-sheet { border: none; box-shadow: none; padding: 0; }
  .letter-body p:first-child::first-letter { color: #000; }
  .letter-body .placeholder { background: none; border-bottom: 1px solid #000; color: #000; }
  .folio { border-color: #000; color: #000; }
}