/* ==========================================
   BASE STYLES & RESET
   ========================================== */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  scroll-padding-top: 110px;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-regular);
  line-height: var(--line-height-relaxed);
  color: var(--color-dark-gray);
  background-color: var(--color-dark);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

section {
  animation: fadeInUp 0.8s ease-out;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-lg);
  color: var(--color-white);
}

h1 {
  font-size: var(--font-size-h1);
}

h2 {
  font-size: var(--font-size-h2);
  font-weight: var(--font-weight-semibold);
}

h3 {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-semibold);
}

p {
  margin-bottom: var(--spacing-lg);
  color: var(--color-dark-gray);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: var(--transition-smooth);
}

a:hover {
  color: var(--color-secondary);
}

ul, ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

li {
  margin-bottom: var(--spacing-md);
}

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

/* Forms */
input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Sections */
section {
  padding: clamp(3rem, 10vw, 6rem) 0;
}

section:nth-child(even) {
  background-color: var(--color-light);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-accent), transparent);
  opacity: 0.08;
  border-radius: 50%;
}

.hero__content {
  text-align: left;
  max-width: 500px;
  z-index: 1;
  flex: 1;
}

.hero__image {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-left: var(--spacing-3xl);
}

.hero__image img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

.hero__wrapper {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.hero__subtitle {
  font-size: var(--font-size-h3);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-2xl);
  line-height: var(--line-height-relaxed);
}

.hero__cta {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: flex-start;
  flex-wrap: wrap;
}

/* About Grid */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.about-grid img {
  border-radius: var(--border-radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

/* Focus States */
*:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background-color: var(--color-accent);
  color: var(--color-white);
}

/* Utilities */
.skip-link {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}