/* ========================================
   CSS CUSTOM PROPERTIES
   ======================================== */
:root {
  /* Colors */
  --color-bg: #F5F6F4;
  --color-text: #5A615E;
  --color-text-bright: #1F2725;
  --color-accent: #3D5B52;
  --color-border: #d4d6d3;

  /* Typography */
  --font-heading: "EB Garamond", "Times New Roman", Georgia, serif;
  --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --space-xxl: 8rem;

  /* Layout */
  --content-max-width: 1400px;
  --text-max-width: 70ch;
  --grid-columns: 16;
  --grid-gap: 2rem;

  /* Breakpoints */
  --breakpoint-tablet: 768px;
  --breakpoint-mobile: 480px;
}

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

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */
h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--color-text-bright);
  line-height: 1.2;
  font-weight: 400;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: -0.01em;
  margin-bottom: var(--space-md);
}

h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  letter-spacing: 0.01em;
  margin-bottom: var(--space-sm);
}

p {
  max-width: var(--text-max-width);
  margin-bottom: var(--space-md);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity 0.2s ease, color 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

a:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

/* ========================================
   LAYOUT / GRID
   ======================================== */
.site-header,
.hero,
.about,
.readiness,
.contact,
.site-footer {
  width: 100%;
  padding: var(--space-md);
}

.header-container,
.hero-content,
.about-container,
.readiness-container,
.contact-container {
  max-width: var(--content-max-width);
  margin: 0 auto;
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(245, 246, 244, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 2rem;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.logo-link {
  display: inline-block;
  line-height: 0;
}

.header-logo {
  height: 70px;
  width: auto;
  display: block;
}

.main-nav {
  display: flex;
  gap: var(--space-md);
}

.main-nav a {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text);
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-accent);
  transition: width 0.3s ease;
}

.main-nav a:hover::after {
  width: 100%;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--space-xxl) var(--space-md);
}

.hero-content {
  opacity: 0;
  animation: fadeInUp 1s ease-out 0.2s forwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-content {
    opacity: 1;
    animation: none;
  }
}

.hero h1 {
  letter-spacing: -0.01em;
}

.hero-text {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--color-text);
  max-width: 75ch;
}

/* ========================================
   ABOUT SECTION
   ======================================== */
.about {
  padding: var(--space-xxl) var(--space-md);
  border-top: 1px solid var(--color-border);
}

.about-container {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-xl);
  align-items: start;
}

.about-image {
  position: sticky;
  top: calc(var(--space-xl) + 60px);
}

.about-image img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-sm);
  transition: filter 0.3s ease;
}

.about-image img:hover {
  filter: brightness(1.1);
}

.image-placeholder {
  width: 100%;
  aspect-ratio: 3 / 4;
  background: linear-gradient(135deg, #1a1a1a 0%, #2a2a2a 100%);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-sm);
  transition: filter 0.3s ease;
}

.image-placeholder:hover {
  filter: brightness(1.1);
}

.image-caption {
  font-size: 0.875rem;
  color: var(--color-text);
  margin: 0;
}

.about-text p {
  margin-bottom: var(--space-md);
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact {
  padding: var(--space-xxl) var(--space-md);
  border-top: 1px solid var(--color-border);
}

.contact-container {
  text-align: center;
}

.contact-text {
  font-size: 1.25rem;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  max-width: 100%;
}

.contact-email {
  font-size: 1.5rem;
  font-family: var(--font-heading);
  color: var(--color-accent);
  display: inline-block;
  position: relative;
}

.contact-email::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s ease;
}

.contact-email:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* ========================================
   FOOTER
   ======================================== */
.site-footer {
  padding: var(--space-lg) var(--space-md);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.site-footer p {
  font-size: 0.875rem;
  color: #5A615E;
  margin: 0;
  max-width: 100%;
}

.site-footer a {
  color: #5A615E;
  margin-left: var(--space-sm);
}

.site-footer a:hover {
  color: var(--color-text-bright);
}

/* ========================================
   RESPONSIVE / MEDIA QUERIES
   ======================================== */
@media (max-width: 1024px) {
  :root {
    --grid-columns: 8;
  }
}

@media (max-width: 768px) {
  :root {
    --grid-columns: 4;
    --space-lg: 3rem;
    --space-xl: 4rem;
    --space-xxl: 5rem;
  }

  .hero {
    min-height: 80vh;
    padding: var(--space-xl) var(--space-md);
  }

  .about-container {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .about-image {
    position: static;
  }

  .main-nav {
    gap: var(--space-sm);
  }

  .main-nav a {
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  .site-header {
    padding: 0.625rem 1rem;
  }

  .header-logo {
    height: 50px;
  }

  .hero-text {
    font-size: 1rem;
  }

  .contact-email {
    font-size: 1.25rem;
  }
}