/* ============================================================
   main.css — Matheus Haddad Personal Site
   ============================================================ */

/* ── Google Fonts imported in HTML ── */

:root {
  --color-primary: #465259;
  --color-secondary: #A5A698;
  --color-accent: #BF7960;
  --color-light: #F2F2F2;
  --color-dark: #0D0D0D;
  --color-white: #FFFFFF;

  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Lato', sans-serif;

  --container-max: 1200px;
  --container-padding: 2rem;
  --nav-height: 72px;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);

  --transition: 0.2s ease;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-dark);
  background: var(--color-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-dark);
}

h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
}

h3 {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
}

h4 {
  font-size: 1.1rem;
  font-weight: 600;
}

p {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--color-dark);
  line-height: 1.8;
}

em {
  font-style: italic;
  color: var(--color-accent);
}

strong {
  font-weight: 700;
}

/* ============================================================
   LAYOUT HELPERS
   ============================================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: 5rem 0;
}

.section-light {
  background: var(--color-light);
}

.section-dark {
  background: var(--color-dark);
  color: var(--color-white);
}

.section-dark h2,
.section-dark h3,
.section-dark p {
  color: var(--color-white);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header p {
  max-width: 700px;
  margin: 1rem auto 0;
  color: var(--color-secondary);
}

.section-label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  margin-bottom: 0.6rem;
}

/* ============================================================
   HEADER / NAV
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: var(--color-white);
  border-bottom: 1px solid rgba(0, 0, 0, 0.07);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand:hover {
  color: var(--color-accent);
}

/* Nav */
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.main-nav ul li a {
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.main-nav ul li a:hover,
.main-nav ul li a.active {
  color: var(--color-accent);
}

.main-nav ul li a.btn-nav {
  background: var(--color-accent);
  color: var(--color-white);
  padding: 0.45rem 1.1rem;
  border-radius: var(--radius-sm);
}

.main-nav ul li a.btn-nav:hover {
  background: #a96a51;
  color: var(--color-white);
}

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ============================================================
   HERO — SPLIT SCREEN
   ============================================================ */
.hero {
  padding-top: var(--nav-height);
  min-height: 632px;
  display: flex;
  align-items: stretch;
}

.hero .container {
  width: 100%;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 560px;
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 4rem 4rem 4rem 0;
}

.hero-content h1 {
  margin-bottom: 1.25rem;
  color: var(--color-dark);
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-secondary);
  margin-bottom: 2rem;
  max-width: 480px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.hero-image {
  position: relative;
  overflow: hidden;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  min-height: 560px;
}

/* ============================================================
   STATS BAR
   ============================================================ */
.stats-bar {
  background: var(--color-primary);
  padding: 2.5rem 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  text-align: center;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat-label {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.4;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.8rem 1.75rem;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: #a96a51;
  border-color: #a96a51;
  color: var(--color-white);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-outline-light {
  background: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn-outline-light:hover {
  background: var(--color-white);
  color: var(--color-dark);
}

/* ============================================================
   BOOK HIGHLIGHT
   ============================================================ */
.book-highlight {
  background: var(--color-white);
}

.book-grid {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 4rem;
  align-items: center;
}

.book-cover img {
  margin: 0 auto;
  min-height: 400px;
  object-fit: cover;
}

.book-info h2 {
  margin-bottom: 1rem;
}

.book-info p {
  color: var(--color-secondary);
  margin-bottom: 1.75rem;
}

.book-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ============================================================
   COMPANY LOGOS STRIP
   ============================================================ */
.company-logos-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem 1rem;
  padding: 1rem 0;
}

.company-logos-strip a {
  display: flex;
  align-items: center;
  opacity: 0.65;
  transition: opacity var(--transition);
}

.company-logos-strip a:hover {
  opacity: 1;
}

.company-logos-strip img {
  height: 125px;
  width: auto;
  object-fit: contain;
}

/* ============================================================
   COMPANY CARDS (empresas.html)
   ============================================================ */
.company-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.company-card {
  background: var(--color-white);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: box-shadow var(--transition), transform var(--transition);
}

.company-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.company-card-logo {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.company-card-logo img {
  height: 100%;
  width: auto;
  object-fit: contain;
}

.company-card-badge {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  background: rgba(191, 121, 96, 0.1);
  padding: 0.25rem 0.65rem;
  border-radius: 100px;
  align-self: flex-start;
}

.company-card h3 {
  font-size: 1.1rem;
  margin: 0;
}

.company-card p {
  font-size: 0.95rem;
  color: var(--color-secondary);
  flex: 1;
}

.company-card a.card-link {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: auto;
}

.company-card a.card-link:hover {
  text-decoration: underline;
}

/* Council / advisory cards */
.council-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

/* ============================================================
   MEDIA GRID (palestras.html)
   ============================================================ */
.filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.filter-tab {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.5rem 1.25rem;
  border-radius: 100px;
  border: 2px solid var(--color-primary);
  background: transparent;
  color: var(--color-primary);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-tab:hover,
.filter-tab.active {
  background: var(--color-primary);
  color: var(--color-white);
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.media-card {
  background: var(--color-white);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.media-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.media-card iframe {
  display: block;
  width: 100%;
  height: 200px;
  border: none;
}

.media-card-body {
  padding: 1rem;
}

.media-card-source {
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.4rem;
}

.media-card-body p {
  font-size: 0.88rem;
  color: var(--color-secondary);
  line-height: 1.5;
}

.media-card.hidden {
  display: none;
}

/* ============================================================
   TALK THEMES (palestras.html)
   ============================================================ */
.talks-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.talk-card {
  background: var(--color-white);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: box-shadow var(--transition), transform var(--transition);
}

.talk-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.talk-card-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-light);
  line-height: 1;
  margin-bottom: 0.75rem;
}

.talk-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.talk-card p {
  font-size: 0.95rem;
  color: var(--color-secondary);
}

/* Talk formats badges */
.formats-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 1.5rem;
}

.format-badge {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.45rem 1.1rem;
  border-radius: 100px;
  background: var(--color-light);
  color: var(--color-primary);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

/* ============================================================
   FEATURES GRID (mentoria.html)
   ============================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-white);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: box-shadow var(--transition), transform var(--transition);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(191, 121, 96, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.3rem;
  color: var(--color-accent);
}

.feature-card h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--color-secondary);
  line-height: 1.6;
}

/* ============================================================
   FORMAT CARDS (mentoria — 3 cards)
   ============================================================ */
.format-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.format-card {
  border-radius: var(--radius-md);
  padding: 2rem;
  background: var(--color-light);
  border-top: 3px solid var(--color-accent);
}

.format-card h3 {
  font-size: 1.05rem;
  color: var(--color-primary);
  margin-bottom: 0.6rem;
}

.format-card p {
  font-size: 0.95rem;
  color: var(--color-secondary);
}

/* ============================================================
   STEPS / PROCESS
   ============================================================ */
.steps-section {
  background: var(--color-dark);
  padding: 5rem 0;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
  text-align: center;
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.step-number {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--color-accent);
  flex-shrink: 0;
}

.step-item h3 {
  font-size: 1.1rem;
  color: var(--color-white);
}

.step-item p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.65);
}

/* ============================================================
   TIMELINE
   ============================================================ */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-light);
}

.timeline-item {
  position: relative;
  padding: 0 0 2.5rem 2.5rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline-year {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.3rem;
}

.timeline-item h3 {
  font-size: 1rem;
  color: var(--color-dark);
  margin-bottom: 0.25rem;
}

.timeline-item p {
  font-size: 0.92rem;
  color: var(--color-secondary);
}

/* ============================================================
   BIO SECTION (sobre.html)
   ============================================================ */
.bio-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 4rem;
  align-items: start;
}

.bio-photo img {
  border-radius: var(--radius-md);
  width: 100%;
  object-fit: cover;
}

.bio-text h2 {
  margin-bottom: 1.25rem;
}

.bio-text p {
  margin-bottom: 1.25rem;
  color: var(--color-secondary);
}

.bio-text p:last-child {
  margin-bottom: 0;
}

/* Education list */
.education-list {
  margin-top: 1rem;
}

.education-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-light);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.education-list li:last-child {
  border-bottom: none;
}

.edu-degree {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-dark);
}

.edu-institution {
  font-size: 0.88rem;
  color: var(--color-secondary);
}

/* Values grid */
.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 1rem;
}

.value-card {
  background: var(--color-white);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: box-shadow var(--transition), transform var(--transition);
}

.value-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.value-card-icon {
  font-size: 1.8rem;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.value-card h4 {
  font-size: 0.92rem;
  color: var(--color-primary);
  line-height: 1.4;
}

/* ============================================================
   BOOK DETAIL (livros.html)
   ============================================================ */
.book-hero {
  background: var(--color-dark);
  padding: calc(var(--nav-height) + 4rem) 0 5rem;
}

.book-hero-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 4rem;
  align-items: center;
}

.book-hero-cover img {
  border-radius: var(--radius-md);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
  margin: 0 auto;
  width: 100%;
}

.book-hero-info h1 {
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.book-hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 2rem;
}

.book-hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.book-audience-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.audience-item {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 1.25rem;
  background: var(--color-white);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition);
}

.audience-item:hover {
  box-shadow: var(--shadow-md);
}

.audience-item i {
  color: var(--color-accent);
  font-size: 1.1rem;
  margin-top: 0.15rem;
  flex-shrink: 0;
}

.audience-item p {
  font-size: 0.95rem;
  color: var(--color-secondary);
  line-height: 1.5;
}

.book-highlights-list {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: 1rem;
}

.book-highlight-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.25rem;
  background: var(--color-light);
  border-radius: var(--radius-sm);
}

.book-highlight-item i {
  color: var(--color-accent);
  font-size: 1rem;
  flex-shrink: 0;
}

.book-highlight-item span {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-dark);
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.contact-card {
  background: var(--color-white);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: box-shadow var(--transition), transform var(--transition);
}

.contact-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.contact-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(191, 121, 96, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}

.contact-card h3 {
  font-size: 1.05rem;
  color: var(--color-primary);
  margin-bottom: 0.6rem;
}

.contact-card p {
  font-size: 0.92rem;
  color: var(--color-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.contact-card a.card-link {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
}

.contact-card a.card-link:hover {
  text-decoration: underline;
}

/* ============================================================
   FORM
   ============================================================ */
.form-wrapper {
  max-width: 680px;
  margin: 0 auto;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 1.25rem;
}

.form-group label {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-dark);
  background: var(--color-white);
  border: 1px solid rgba(0, 0, 0, 0.15);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(191, 121, 96, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23465259' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-submit {
  margin-top: 0.5rem;
}

.form-success {
  display: none;
  text-align: center;
  padding: 2.5rem 2rem;
  background: rgba(191, 121, 96, 0.06);
  border: 1px solid rgba(191, 121, 96, 0.25);
  border-radius: var(--radius-md);
}

.form-success.visible {
  display: block;
}

.form-success__icon {
  font-size: 2.5rem;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.form-success__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.form-success__text {
  font-size: 0.95rem;
  color: var(--color-muted);
  line-height: 1.6;
}

.form-error {
  display: none;
  margin-top: 1rem;
  padding: 0.9rem 1.1rem;
  background: rgba(200, 50, 50, 0.06);
  border: 1px solid rgba(200, 50, 50, 0.25);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: #b83232;
}

.form-error.visible {
  display: block;
}

/* ============================================================
   SOCIAL LINKS
   ============================================================ */
.social-links-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.social-link-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem 1.5rem;
  background: var(--color-white);
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--radius-md);
  transition: box-shadow var(--transition), transform var(--transition);
  min-width: 180px;
}

.social-link-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.social-link-item i {
  font-size: 1.4rem;
  color: var(--color-accent);
  width: 28px;
  text-align: center;
  flex-shrink: 0;
}

.social-link-item span {
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* ============================================================
   CTA SECTION
   ============================================================ */
.cta-section {
  background: var(--color-primary);
  padding: 5rem 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: 1rem;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.7);
  max-width: 560px;
  margin: 0 auto 2.25rem;
  font-size: 1.05rem;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

/* ============================================================
   PAGE HERO (internal pages)
   ============================================================ */
.page-hero {
  background: var(--color-dark);
  padding: calc(var(--nav-height) + 4rem) 0 4rem;
  text-align: center;
}

.page-hero h1 {
  color: var(--color-white);
  margin-bottom: 1rem;
}

.page-hero p {
  color: rgba(255, 255, 255, 0.65);
  max-width: 620px;
  margin: 0 auto 2rem;
  font-size: 1.1rem;
}

.page-hero .section-label {
  display: block;
  margin-bottom: 0.75rem;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-dark);
  padding: 4rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .brand {
  color: var(--color-white);
  display: block;
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.7;
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 1rem;
}

.footer-col ul li {
  margin-bottom: 0.6rem;
}

.footer-col ul li a {
  font-size: 0.92rem;
  color: rgba(255, 255, 255, 0.65);
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding: 1.5rem 0;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.3);
  text-align: center;
}

/* ============================================================
   RESPONSIVE — 1024px
   ============================================================ */
@media (max-width: 1024px) {
  .hero-content {
    padding: 3rem 3rem 3rem 0;
  }

  .bio-grid {
    grid-template-columns: 280px 1fr;
    gap: 2.5rem;
  }

  .book-grid {
    grid-template-columns: 320px 1fr;
    gap: 2.5rem;
  }

  .company-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

/* ============================================================
   RESPONSIVE — 768px
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --container-padding: 1.25rem;
    --nav-height: 64px;
  }

  /* Hamburger menu */
  .menu-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    box-shadow: var(--shadow-md);
  }

  .main-nav.open {
    max-height: 400px;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    gap: 0.25rem;
  }

  .main-nav ul li a {
    display: block;
    padding: 0.6rem 1rem;
  }

  .main-nav ul li a.btn-nav {
    text-align: center;
    margin-top: 0.25rem;
  }

  /* Hero becomes single column */
  .hero {
    background: var(--color-white);
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-content {
    padding: 2.5rem 0;
    order: 1;
  }

  .hero-image {
    order: -1;
  }

  .hero-image img {
    height: 340px;
    object-position: top center;
  }

  /* Stats */
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  /* Book grid */
  .book-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .book-cover img {
    width: 75%;
    max-width: 320px;
    min-height: unset;
    object-fit: unset;
    margin: 0 auto;
  }

  /* Book hero */
  .book-hero-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .book-hero-cover img {
    width: 75%;
    max-width: 320px;
    min-height: unset;
    object-fit: unset;
    margin: 0 auto;
  }

  .book-hero-ctas {
    justify-content: center;
  }

  /* Bio */
  .bio-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Companies */
  .company-grid {
    grid-template-columns: 1fr;
  }

  .council-grid {
    grid-template-columns: 1fr;
  }

  /* Media grid */
  .media-grid {
    grid-template-columns: 1fr;
  }

  .talks-grid {
    grid-template-columns: 1fr;
  }

  /* Features */
  .features-grid {
    grid-template-columns: 1fr;
  }

  .format-cards-grid {
    grid-template-columns: 1fr;
  }

  /* Steps */
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Values */
  .values-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Audience */
  .book-audience-grid {
    grid-template-columns: 1fr;
  }

  /* Contact */
  .contact-cards-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* CTA */
  .hero-ctas {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
}

/* ============================================================
   RESPONSIVE — 480px
   ============================================================ */
@media (max-width: 480px) {
  h1 {
    font-size: 1.9rem;
  }

  h2 {
    font-size: 1.55rem;
  }

  .values-grid {
    grid-template-columns: 1fr;
  }

  .social-links-grid {
    flex-direction: column;
  }

  .social-link-item {
    min-width: auto;
  }
}