/* Buy The Building, Keep The Profits - Style Sheet */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --charcoal: #1c1917;
  --gold: #ca8a04;
  --gold-light: #eab308;
  --gold-dark: #a16207;
  --white: #ffffff;
  --gray-50: #fafaf9;
  --gray-100: #f5f5f4;
  --gray-200: #e7e5e4;
  --gray-300: #d6d3d1;
  --gray-400: #a8a29e;
  --gray-500: #78716c;
  --gray-600: #57534e;
  --gray-700: #44403c;
  --gray-800: #292524;
  --gray-900: #1c1917;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--charcoal);
  background: var(--white);
  line-height: 1.7;
  font-size: 16px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 800;
  color: var(--charcoal);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
  color: var(--gray-600);
}

a {
  color: var(--gold);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--gold-light);
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 6rem 0;
}

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

.section--dark p {
  color: var(--gray-300);
}

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

.section--gold {
  background: linear-gradient(135deg, var(--gold-dark), var(--gold));
  color: var(--white);
}

.section--gray {
  background: var(--gray-50);
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(28, 25, 23, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(202, 138, 4, 0.2);
  padding: 1rem 0;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.nav__logo {
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--white);
  letter-spacing: -0.02em;
}

.nav__logo span {
  color: var(--gold);
}

.nav__links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav__links a {
  color: var(--gray-300);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav__links a:hover {
  color: var(--gold);
}

.nav__cta {
  background: var(--gold);
  color: var(--charcoal) !important;
  padding: 0.6rem 1.5rem;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav__cta:hover {
  background: var(--gold-light);
  color: var(--charcoal) !important;
}

.nav__mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(28, 25, 23, 0.92), rgba(28, 25, 23, 0.85)),
              url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?w=1920&q=80') center/cover no-repeat;
  padding-top: 80px;
}

.hero__content {
  max-width: 700px;
}

.hero__badge {
  display: inline-block;
  background: rgba(202, 138, 4, 0.15);
  color: var(--gold);
  padding: 0.5rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 2rem;
  border: 1px solid rgba(202, 138, 4, 0.3);
}

.hero h1 {
  color: var(--white);
  margin-bottom: 1.5rem;
}

.hero h1 span {
  color: var(--gold);
}

.hero p {
  font-size: 1.25rem;
  color: var(--gray-300);
  margin-bottom: 2.5rem;
  max-width: 600px;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn--gold {
  background: var(--gold);
  color: var(--charcoal);
}

.btn--gold:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
  box-shadow: 0 10px 40px rgba(202, 138, 4, 0.3);
  color: var(--charcoal);
}

.btn--outline {
  border: 2px solid var(--gold);
  color: var(--gold);
  background: transparent;
}

.btn--outline:hover {
  background: var(--gold);
  color: var(--charcoal);
}

.btn--large {
  padding: 1.2rem 3rem;
  font-size: 1.1rem;
}

/* Cards */
.card {
  background: var(--white);
  border-radius: 12px;
  padding: 2.5rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--gray-200);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.card__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--white);
  border-radius: 12px;
  font-weight: 800;
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.card h4 {
  margin-bottom: 0.75rem;
}

/* Grid */
.grid {
  display: grid;
  gap: 2rem;
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  text-align: center;
  padding: 3rem 0;
}

.stat__number {
  font-size: 3rem;
  font-weight: 900;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat__label {
  font-size: 0.9rem;
  color: var(--gray-500);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Chapter List */
.chapter-list {
  list-style: none;
  counter-reset: chapter;
}

.chapter-item {
  counter-increment: chapter;
  padding: 2rem;
  border-left: 3px solid var(--gold);
  margin-bottom: 1.5rem;
  background: var(--gray-50);
  border-radius: 0 8px 8px 0;
  transition: background 0.3s ease;
}

.chapter-item:hover {
  background: var(--gray-100);
}

.chapter-item h4::before {
  content: "Chapter " counter(chapter) ": ";
  color: var(--gold);
  font-weight: 700;
}

/* Blog */
.blog-card {
  border-radius: 12px;
  overflow: hidden;
  background: var(--white);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease;
  border: 1px solid var(--gray-200);
}

.blog-card:hover {
  transform: translateY(-4px);
}

.blog-card__image {
  height: 200px;
  background-size: cover;
  background-position: center;
}

.blog-card__content {
  padding: 2rem;
}

.blog-card__date {
  font-size: 0.8rem;
  color: var(--gold);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.blog-card__content h4 {
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.blog-card__content p {
  font-size: 0.9rem;
}

/* Calculator */
.calculator {
  background: var(--white);
  border-radius: 16px;
  padding: 3rem;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--gray-200);
  max-width: 800px;
  margin: 0 auto;
}

.calculator__form {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--gray-700);
}

.form-group input {
  padding: 0.8rem 1rem;
  border: 2px solid var(--gray-200);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  transition: border-color 0.3s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--gold);
}

.calculator__results {
  background: var(--gray-50);
  border-radius: 12px;
  padding: 2rem;
  display: none;
}

.calculator__results.active {
  display: block;
}

.result-row {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--gray-200);
}

.result-row:last-child {
  border-bottom: none;
  font-weight: 700;
  color: var(--gold);
  font-size: 1.1rem;
}

/* Footer */
.footer {
  background: var(--charcoal);
  color: var(--gray-400);
  padding: 4rem 0 2rem;
  border-top: 3px solid var(--gold);
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer h4 {
  color: var(--white);
  margin-bottom: 1rem;
  font-size: 1rem;
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: 0.5rem;
}

.footer__links a {
  color: var(--gray-400);
  font-size: 0.9rem;
}

.footer__links a:hover {
  color: var(--gold);
}

.footer__bottom {
  border-top: 1px solid var(--gray-800);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.85rem;
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.contact-form .form-group {
  margin-bottom: 1.5rem;
}

.contact-form textarea {
  padding: 0.8rem 1rem;
  border: 2px solid var(--gray-200);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  resize: vertical;
  min-height: 150px;
  transition: border-color 0.3s ease;
}

.contact-form textarea:focus {
  outline: none;
  border-color: var(--gold);
}

/* Utility */
.text-center { text-align: center; }
.text-gold { color: var(--gold); }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}

.section-header p {
  font-size: 1.1rem;
  margin-top: 1rem;
}

.gold-line {
  width: 60px;
  height: 4px;
  background: var(--gold);
  margin: 1.5rem auto;
  border-radius: 2px;
}

/* Responsive */
@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .nav__mobile-toggle {
    display: block;
  }

  .nav__links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--charcoal);
    padding: 2rem;
    gap: 1rem;
    border-bottom: 1px solid var(--gray-800);
  }

  .hero {
    min-height: 80vh;
    padding-top: 100px;
  }

  .section {
    padding: 4rem 0;
  }

  .container {
    padding: 0 1.5rem;
  }

  .calculator {
    padding: 2rem 1.5rem;
  }

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

@media (max-width: 480px) {
  .btn--large {
    padding: 1rem 2rem;
    font-size: 1rem;
  }

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