/* ===== ROOT VARIABLES ===== */
:root {
  --color-primary: #5c7a5c;
  --color-primary-dark: #3e5c3e;
  --color-accent: #c8a96e;
  --color-warm-bg: #f5f0e8;
  --color-light-bg: #fafaf7;
  --color-text: #2c2c2c;
  --color-muted: #7a7a7a;
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Jost', sans-serif;
}

/* ===== BASE ===== */
html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-light-bg);
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-serif);
}

/* ===== UTILITY ===== */
.py-6 {
  padding-top: 5rem;
  padding-bottom: 5rem;
}

.letter-spacing {
  letter-spacing: 0.12em;
}

/* ===== NAVBAR ===== */
#mainNav {
  background-color: transparent;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
  padding: 1.2rem 0;
}

#mainNav.scrolled {
  background-color: rgba(255, 255, 255, 0.97);
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
  padding: 0.6rem 0;
}

#mainNav .navbar-brand {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-primary-dark);
}

#mainNav .navbar-logo {
  height: 64px;
  width: auto;
  display: block;
  transition: height 0.3s ease;
}

#mainNav.scrolled .navbar-logo {
  height: 52px;
}

#mainNav .nav-link {
  color: var(--color-text);
  font-weight: 500;
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  padding: 0.4rem 1.15rem;
  transition: color 0.2s;
}

#mainNav .nav-link:hover,
#mainNav .nav-link.active {
  color: var(--color-primary);
}

/* ===== HERO ===== */
.hero-section {
  min-height: 100vh;
  background: linear-gradient(160deg, #eef3ee 0%, var(--color-warm-bg) 60%, #e8dfd0 100%);
  padding-top: 6rem;
  padding-bottom: 4rem;
}

.hero-section .overline {
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 700;
}

.hero-section h1 {
  color: var(--color-primary-dark);
  font-size: clamp(2rem, 5vw, 3.2rem);
}

.hero-section h1 em {
  color: var(--color-accent);
}

.hero-section .lead {
  color: #555;
  font-size: 1.1rem;
  line-height: 1.8;
  max-width: 520px;
}

.author-img-wrap {
  max-width: 380px;
  position: relative;
}

.author-img-wrap::before {
  content: '';
  position: absolute;
  inset: -12px -12px 12px 12px;
  border-radius: 1.5rem;
  background-color: var(--color-accent);
  opacity: 0.25;
  z-index: 0;
}

.author-img-wrap img {
  position: relative;
  z-index: 1;
  width: 100%;
  object-fit: cover;
  aspect-ratio: 4/5;
}

/* ===== BUTTONS ===== */
.btn-primary {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  font-weight: 600;
  letter-spacing: 0.03em;
  border-radius: 50px;
  transition: background-color 0.2s, transform 0.15s;
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
}

/* ===== SECTIONS ===== */
.section-light {
  background-color: var(--color-light-bg);
}

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

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: var(--color-primary-dark);
}

.divider {
  width: 60px;
  height: 3px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

/* ===== FEATURE CARDS ===== */
.feature-card {
  background-color: #fff;
  border-radius: 1rem;
  border: 1px solid rgba(0,0,0,0.05);
  transition: box-shadow 0.2s, transform 0.2s;
}

.feature-card:hover {
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
  transform: translateY(-4px);
}

.feature-icon {
  font-size: 2rem;
  color: var(--color-accent);
}

/* ===== BOOK SECTION ===== */
.book-cover-wrap {
  max-width: 320px;
}

.book-cover-placeholder {
  width: 100%;
  aspect-ratio: 2/3;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-radius: 1rem;
  max-width: 280px;
  margin: 0 auto;
}

.book-cover-img {
  display: block;
  width: 100%;
  max-width: 280px;
  height: auto;
  margin: 0 auto;
}

/* ===== QUOTE SECTION ===== */
.quote-section {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, #2a4030 100%);
}

/* ===== CONTACT FORM ===== */
.contact-form {
  border: 1px solid rgba(0,0,0,0.05);
}

.form-control {
  border-color: #ddd;
  border-radius: 0.6rem;
  font-size: 1rem;
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.2rem rgba(92, 122, 92, 0.2);
}

/* ===== FOOTER ===== */
.footer-section {
  background-color: #f0ebe0;
  border-top: 1px solid #e0d8c8;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero-section {
    text-align: center;
  }

  .hero-section .lead {
    margin-left: auto;
    margin-right: auto;
  }

  .author-img-wrap {
    max-width: 280px;
  }
}