/* ============================================================
   USBR M1 — Main CSS
   Paleta idêntica ao deck: navy, fundo FBFBFC, texto 2A3447
   ============================================================ */

:root {
  --navy: #1A2847;
  --ink: #0F1A2E;
  --text: #2A3447;
  --muted: #5B6578;
  --soft: #8A94A6;
  --rule: #D4D9E0;
  --bg: #FBFBFC;
  --bg-alt: #F5F6F8;
  --paper: #FFFFFF;
  --error: #C62828;
  --success: #2E7D32;
  
  --font-serif: Georgia, 'Times New Roman', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  
  --max-width: 1100px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 64px;
  --space-xxl: 100px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================================
   LANGUAGE TOGGLE
   ============================================================ */
.lang-toggle {
  position: fixed;
  top: 20px;
  right: 24px;
  z-index: 100;
  display: flex;
  gap: 4px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 2px;
}

.lang-btn {
  background: transparent;
  border: none;
  padding: 6px 10px;
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--muted);
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.15s;
}

.lang-btn:hover { color: var(--navy); }
.lang-btn.active { background: var(--navy); color: white; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px 40px;
  background: var(--bg);
  position: relative;
}

.hero-inner {
  max-width: 780px;
  text-align: center;
}

.eyebrow {
  font-family: var(--font-serif);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 6px;
  color: var(--muted);
  margin-bottom: var(--space-lg);
}

.monogram-wrap {
  margin: 0 auto var(--space-lg);
  width: 140px;
  height: 140px;
}

.monogram {
  width: 100%;
  height: 100%;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4.5vw, 44px);
  font-weight: normal;
  color: var(--ink);
  line-height: 1.25;
  margin-bottom: var(--space-md);
  letter-spacing: 0.3px;
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(16px, 2vw, 19px);
  font-style: italic;
  color: var(--text);
  line-height: 1.5;
  max-width: 680px;
  margin: 0 auto;
}

.scroll-cue {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-xl);
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  padding: 8px 0;
  border-bottom: 1px solid transparent;
  transition: all 0.2s;
}

.scroll-cue:hover {
  color: var(--navy);
  border-color: var(--navy);
}

/* ============================================================
   SECTIONS
   ============================================================ */
.section {
  padding: var(--space-xxl) 24px;
}

.section-alt {
  background: var(--bg-alt);
}

.section-contact {
  background: var(--bg-alt);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-serif);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 4px;
  color: var(--muted);
  margin-bottom: var(--space-sm);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 38px);
  font-weight: normal;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: var(--space-sm);
}

.title-rule {
  width: 48px;
  height: 2px;
  background: var(--navy);
  margin-bottom: var(--space-lg);
}

.lead {
  font-size: 17px;
  color: var(--text);
  max-width: 900px;
  margin-bottom: var(--space-lg);
}

.section p { max-width: 900px; margin-bottom: var(--space-md); }

/* ============================================================
   GAP — Thesis
   ============================================================ */
.thesis {
  font-family: var(--font-serif);
  font-size: clamp(20px, 2.5vw, 24px);
  font-style: italic;
  color: var(--ink);
  line-height: 1.4;
  padding: var(--space-md) 0 var(--space-md) var(--space-md);
  border-left: 3px solid var(--navy);
  margin-top: var(--space-xl);
  max-width: 900px;
}

/* ============================================================
   GRID 4 — Program quadrants
   ============================================================ */
.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-md);
}

.card-quadrant { }

.rule-top {
  width: 36px;
  height: 2px;
  background: var(--navy);
  margin-bottom: var(--space-sm);
}

.card-label {
  font-family: var(--font-serif);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--navy);
  margin-bottom: var(--space-sm);
}

.card-body {
  font-size: 14.5px;
  color: var(--text);
  line-height: 1.55;
}

/* ============================================================
   GRID 3 — Pillars, Credentials
   ============================================================ */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-md);
}

.pillar { }

.pillar-number {
  font-family: var(--font-serif);
  font-size: 44px;
  font-style: italic;
  color: var(--navy);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.pillar-rule {
  width: 32px;
  height: 2px;
  background: var(--navy);
  margin-bottom: var(--space-sm);
}

.pillar-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: normal;
  color: var(--ink);
  margin-bottom: var(--space-sm);
}

.pillar-body {
  font-size: 15px;
  color: var(--text);
  line-height: 1.6;
}

/* Credentials */
.credentials { margin-top: var(--space-xl); }

.credential-stat {
  font-family: var(--font-serif);
  font-size: 32px;
  font-style: italic;
  color: var(--navy);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.credential-rule {
  width: 32px;
  height: 2px;
  background: var(--navy);
  margin-bottom: var(--space-sm);
}

.credential-label {
  font-size: 14px;
  color: var(--text);
  line-height: 1.5;
}

/* LOI Note */
.loi-note {
  margin-top: var(--space-xl);
  padding: var(--space-md) 0 var(--space-md) var(--space-md);
  border-left: 3px solid var(--navy);
  max-width: 900px;
}

.loi-note em {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--text);
  font-style: italic;
}

/* ============================================================
   LEADERSHIP
   ============================================================ */
.leaders {
  margin-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.leader {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-lg);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--rule);
  align-items: start;
}

.leader:last-child { border-bottom: 1px solid var(--rule); }

.leader-role {
  font-family: var(--font-serif);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--navy);
  margin-bottom: var(--space-xs);
}

.leader-name {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: normal;
  color: var(--ink);
  line-height: 1.2;
  margin-bottom: var(--space-xs);
}

.leader-title-row {
  font-family: var(--font-serif);
  font-size: 13px;
  font-style: italic;
  color: var(--muted);
  line-height: 1.4;
}

.leader-body {
  font-size: 15px;
  color: var(--text);
  line-height: 1.6;
}

/* ============================================================
   FORM
   ============================================================ */
.form-wrap {
  max-width: 640px;
  background: var(--paper);
  padding: var(--space-xl) var(--space-lg);
  border: 1px solid var(--rule);
  border-radius: 2px;
  margin-top: var(--space-lg);
}

.form-heading {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: normal;
  color: var(--ink);
  margin-bottom: var(--space-xs);
}

.form-instruction {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: var(--space-md);
}

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

.form-group label {
  display: block;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 6px;
  font-family: var(--font-serif);
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--rule);
  border-radius: 2px;
  font-family: inherit;
  font-size: 15px;
  color: var(--text);
  background: var(--bg);
  transition: border-color 0.15s;
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--navy);
}

textarea {
  resize: vertical;
  min-height: 120px;
  font-family: inherit;
}

.form-consent {
  margin-top: var(--space-md);
}

.form-consent label {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 13px;
  text-transform: none;
  letter-spacing: 0;
  font-weight: normal;
  color: var(--text);
  line-height: 1.5;
  font-family: var(--font-sans);
  cursor: pointer;
}

.form-consent input[type="checkbox"] {
  margin-top: 3px;
  flex-shrink: 0;
  accent-color: var(--navy);
}

.form-error {
  font-size: 12px;
  color: var(--error);
  margin-top: 4px;
  min-height: 16px;
}

input.invalid, textarea.invalid { border-color: var(--error); }

.submit-btn {
  background: var(--navy);
  color: white;
  border: none;
  padding: 14px 28px;
  border-radius: 2px;
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s;
  width: 100%;
  margin-top: var(--space-sm);
}

.submit-btn:hover { background: var(--ink); }
.submit-btn:disabled { opacity: 0.6; cursor: wait; }

.form-success,
.form-error-box {
  text-align: center;
  padding: var(--space-lg);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  margin-top: var(--space-lg);
  max-width: 640px;
}

.form-success h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: normal;
  color: var(--success);
  margin-bottom: var(--space-sm);
}

.form-error-box h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: normal;
  color: var(--error);
  margin-bottom: var(--space-sm);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--navy);
  color: white;
  padding: var(--space-xl) 24px var(--space-lg);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-heading {
  font-family: var(--font-serif);
  font-size: 10px;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: #CADCFC;
  margin-bottom: var(--space-sm);
}

.footer-name {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: normal;
  color: white;
  line-height: 1.2;
  margin-bottom: 4px;
}

.footer-title {
  font-family: var(--font-serif);
  font-size: 14px;
  font-style: italic;
  color: #CADCFC;
  line-height: 1.4;
}

.footer-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.footer-label {
  font-family: var(--font-serif);
  font-size: 9px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--soft);
  margin-bottom: 6px;
}

.footer-info-item a {
  color: white;
  text-decoration: none;
  font-size: 14px;
}

.footer-info-item a:hover { color: #CADCFC; }

.footer-info-item span {
  color: white;
  font-size: 14px;
}

.footer-legal {
  padding-top: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-links {
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 13px;
}

.footer-links a {
  color: #CADCFC;
  text-decoration: none;
}

.footer-links a:hover { color: white; }
.footer-links span { color: var(--soft); }

.footer-copyright {
  font-size: 12px;
  color: var(--soft);
  letter-spacing: 0.5px;
}

/* ============================================================
   COOKIE BANNER
   ============================================================ */
.cookie-banner {
  position: fixed;
  bottom: 20px;
  left: 20px;
  right: 20px;
  max-width: 720px;
  margin: 0 auto;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 4px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  padding: var(--space-md);
  z-index: 99;
}

.cookie-inner p {
  font-size: 13px;
  color: var(--text);
  line-height: 1.5;
  margin-bottom: var(--space-sm);
}

.cookie-actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: flex-end;
}

.btn-primary, .btn-secondary {
  padding: 8px 16px;
  border-radius: 2px;
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  border: 1px solid var(--rule);
}

.btn-primary { background: var(--navy); color: white; border-color: var(--navy); }
.btn-primary:hover { background: var(--ink); }
.btn-secondary { background: transparent; color: var(--muted); }
.btn-secondary:hover { color: var(--navy); border-color: var(--navy); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .grid-4 { grid-template-columns: 1fr 1fr; gap: var(--space-md) var(--space-lg); }
  .grid-3 { grid-template-columns: 1fr; gap: var(--space-lg); }
  .leader { grid-template-columns: 1fr; gap: var(--space-sm); }
  .footer-main { grid-template-columns: 1fr; gap: var(--space-lg); }
  .footer-info { grid-template-columns: 1fr; gap: var(--space-sm); }
  .footer-legal { flex-direction: column-reverse; align-items: flex-start; }
  .section { padding: var(--space-xl) 20px; }
  .hero { padding: 60px 20px 30px; }
  .cookie-actions { flex-direction: column; }
  .cookie-actions button { width: 100%; }
}

@media (max-width: 560px) {
  .grid-4 { grid-template-columns: 1fr; }
  .form-wrap { padding: var(--space-md); }
}

/* ============================================================
   PRINT
   ============================================================ */
@media print {
  .lang-toggle, .cookie-banner, .scroll-cue, .submit-btn { display: none !important; }
  body { background: white; }
  .section-alt, .section-contact { background: white; }
  .footer { background: white; color: var(--ink); }
  .footer-heading, .footer-title, .footer-label, .footer-copyright { color: var(--muted); }
  .footer-name, .footer-info-item a, .footer-info-item span { color: var(--ink); }
  .footer-links a { color: var(--navy); }
}

/* ============================================================
   PROGRAM AUDIENCES (seção nova v1.1)
   ============================================================ */
.tracks-intro {
  font-family: var(--font-serif);
  font-size: 15px;
  font-style: italic;
  color: var(--muted);
  margin-bottom: var(--space-md);
  margin-top: var(--space-sm);
  max-width: 900px;
}

.audience-tracks {
  margin-top: var(--space-md);
}

.audiences-note {
  margin-top: var(--space-lg);
}

/* ============================================================
   IMAGES WITH GRADIENT B+D v2 — mais presenca visual
   ============================================================ */

.has-bg-image {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.has-bg-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--bg-url);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.38;
  z-index: -2;
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 50%, rgba(0,0,0,0) 90%);
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 50%, rgba(0,0,0,0) 90%);
}

.has-bg-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, 
    var(--bg) 0%, 
    rgba(251,251,252,0.55) 12%, 
    rgba(251,251,252,0.40) 50%, 
    rgba(251,251,252,0.55) 88%, 
    var(--bg) 100%);
  z-index: -1;
  pointer-events: none;
}

.section-alt.has-bg-image::after {
  background: linear-gradient(180deg, 
    var(--bg-alt) 0%, 
    rgba(245,246,248,0.55) 12%, 
    rgba(245,246,248,0.40) 50%, 
    rgba(245,246,248,0.55) 88%, 
    var(--bg-alt) 100%);
}

.hero.has-bg-image::before {
  opacity: 0.50;
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,1) 30%, rgba(0,0,0,1) 70%, rgba(0,0,0,0.4) 100%);
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.8) 0%, rgba(0,0,0,1) 30%, rgba(0,0,0,1) 70%, rgba(0,0,0,0.4) 100%);
}

.hero.has-bg-image::after {
  background: linear-gradient(180deg, 
    rgba(251,251,252,0.35) 0%, 
    rgba(251,251,252,0.50) 40%, 
    rgba(251,251,252,0.65) 100%);
}

.section-contact.has-bg-image::before {
  opacity: 0.42;
}

.has-bridge-bg {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.has-bridge-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--bg-url);
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.15;
  z-index: -1;
  mix-blend-mode: screen;
}

/* Em areas de texto denso (paragrafos longos), reforcar legibilidade local */
.section p, .section .lead, .leader-body, .card-body, .pillar-body,
.credential-label, .tracks-intro, .loi-note em {
  position: relative;
  z-index: 1;
}

@media (max-width: 768px) {
  .has-bg-image::before {
    opacity: 0.28;
  }
  .hero.has-bg-image::before {
    opacity: 0.40;
  }
}

@supports not ((-webkit-mask-image: linear-gradient(black, black)) or (mask-image: linear-gradient(black, black))) {
  .has-bg-image::before {
    opacity: 0.25;
  }
}