:root {
  --color-background: rgba(252, 252, 249, 1);
  --color-surface: rgba(255, 255, 253, 1);
  --color-text: rgba(19, 52, 59, 1);
  --color-text-secondary: rgba(98, 108, 113, 1);
  --color-primary: rgba(33, 128, 141, 1);
  --color-primary-hover: rgba(29, 116, 128, 1);
  --color-secondary: rgba(94, 82, 64, 0.12);
  --color-border: rgba(94, 82, 64, 0.2);
  --color-btn-primary-text: rgba(252, 252, 249, 1);

  --focus-outline: 2px solid var(--color-primary);

  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;

  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;

  --radius-base: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04),
    0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04),
    0 4px 6px -2px rgba(0, 0, 0, 0.02);

  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-background: rgba(31, 33, 33, 1);
    --color-surface: rgba(38, 40, 40, 1);
    --color-text: rgba(245, 245, 245, 1);
    --color-text-secondary: rgba(167, 169, 169, 0.7);
    --color-primary: rgba(50, 184, 198, 1);
    --color-primary-hover: rgba(45, 166, 178, 1);
    --color-secondary: rgba(119, 124, 124, 0.15);
    --color-border: rgba(119, 124, 124, 0.3);
    --color-btn-primary-text: rgba(19, 52, 59, 1);
  }
}

[data-color-scheme="dark"] {
  --color-background: rgba(31, 33, 33, 1);
  --color-surface: rgba(38, 40, 40, 1);
  --color-text: rgba(245, 245, 245, 1);
  --color-text-secondary: rgba(167, 169, 169, 0.7);
  --color-primary: rgba(50, 184, 198, 1);
  --color-primary-hover: rgba(45, 166, 178, 1);
  --color-secondary: rgba(119, 124, 124, 0.15);
  --color-border: rgba(119, 124, 124, 0.3);
  --color-btn-primary-text: rgba(19, 52, 59, 1);
}

[data-color-scheme="light"] {
  --color-background: rgba(252, 252, 249, 1);
  --color-surface: rgba(255, 255, 253, 1);
  --color-text: rgba(19, 52, 59, 1);
  --color-text-secondary: rgba(98, 108, 113, 1);
  --color-primary: rgba(33, 128, 141, 1);
  --color-primary-hover: rgba(29, 116, 128, 1);
  --color-secondary: rgba(94, 82, 64, 0.12);
  --color-border: rgba(94, 82, 64, 0.2);
  --color-btn-primary-text: rgba(252, 252, 249, 1);
}

/* ================= FIXED BASE STYLES ================= */
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  flex-direction: column;
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}
/* ====================================================== */

/* Typography */
h1,
h3 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
}

h1 {
  font-size: var(--font-size-4xl);
}
h3 {
  font-size: var(--font-size-2xl);
}

p {
  margin: 0 0 var(--space-16) 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-normal) var(--ease-standard);
}

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

/* Container layout */
.container {
  width: 100%;
  margin-right: auto;
  margin-left: auto;
  padding-right: var(--space-16);
  padding-left: var(--space-16);
}

@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
  }
}
@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
  }
}
@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
  }
}
@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

.main-container {
  flex: 1;
  background: linear-gradient(135deg, var(--color-background) 0%, var(--color-surface) 100%);
}

.hero-section {
  padding: var(--space-32) 0;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-32);
  align-items: center;
}

.hero-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-20);
}

.hero-name {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  line-height: var(--line-height-tight);
  margin: 0;
}

.hero-description {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-normal);
  color: var(--color-text-secondary);
  margin: 0;
  max-width: 90%;
}

.expertise-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-12);
  margin-top: var(--space-16);
}

.expertise-pill {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-8) var(--space-16);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  transition: all var(--duration-normal) var(--ease-standard);
  box-shadow: var(--shadow-xs);
  cursor: default;
}

.expertise-pill:hover {
  background: var(--color-secondary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.expertise-icon {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-24);
}

.profile-image {
  width: 280px;
  height: 280px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  border: 3px solid var(--color-surface);
  transition: transform var(--duration-normal) var(--ease-standard);
  position: relative;
  overflow: hidden;
}

.profile-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  border-radius: inherit;
}

.profile-image:hover {
  transform: scale(1.02);
}

.social-section {
  padding: var(--space-32) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.social-title {
  text-align: center;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  margin: 0 0 var(--space-24) 0;
}

.social-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-16);
}

.social-link {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-8) var(--space-16);
  background: var(--color-background);
  border: 2px solid transparent;
  border-radius: var(--radius-base);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: all var(--duration-normal) var(--ease-standard);
  box-shadow: var(--shadow-xs);
  min-width: 120px;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.social-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left var(--duration-normal) var(--ease-standard);
}

.social-link:hover::before {
  left: 100%;
}

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

.social-link.linkedin {
  color: #0077b5;
  border-color: #0077b5;
}

.social-link.linkedin:hover {
  background: #0077b5;
  color: white;
}

.social-link.twitter {
  color: #1da1f2;
  border-color: #1da1f2;
}

.social-link.twitter:hover {
  background: #1da1f2;
  color: white;
}

.social-link.github {
  color: #333;
  border-color: #333;
}

.social-link.github:hover {
  background: #333;
  color: white;
}

.social-link.blog {
  color: #ff6b35;
  border-color: #ff6b35;
}

.social-link.blog:hover {
  background: #ff6b35;
  color: white;
}

.social-link.email {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.social-link.email:hover {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
}

.social-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-24);
    text-align: center;
  }
  
  .hero-text {
    order: 2;
  }
  
  .hero-visual {
    order: 1;
  }
  
  .hero-name {
    font-size: var(--font-size-3xl);
  }
  
  .hero-description {
    font-size: var(--font-size-base);
    max-width: 100%;
  }
  
  .profile-image {
    width: 220px;
    height: 220px;
  }
  
  .expertise-container {
    justify-content: center;
  }
  
  .social-links {
    flex-direction: column;
    align-items: center;
  }
  
  .social-link {
    min-width: 160px;
  }
}

@media (max-width: 480px) {
  .hero-section {
    padding: var(--space-20) 0;
  }
  
  
  .hero-name {
    font-size: var(--font-size-2xl);
  }
  
  .profile-image {
    width: 180px;
    height: 180px;
  }
  
  .expertise-pill {
    font-size: var(--font-size-xs);
    padding: var(--space-12);
  }
  
  .expertise-icon {
    width: 14px;
    height: 14px;
  }
  
  .social-title {
    font-size: var(--font-size-xl);
  }
}


@media (prefers-color-scheme: dark) {
  .social-link.github {
    color: #f5f5f5;
    border-color: #f5f5f5;
  }
  
  .social-link.github:hover {
    background: #f5f5f5;
    color: #333;
  }
}

[data-color-scheme="dark"] .social-link.github {
  color: #f5f5f5;
  border-color: #f5f5f5;
}

[data-color-scheme="dark"] .social-link.github:hover {
  background: #f5f5f5;
  color: #333;
}


@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.social-link:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

.main-container::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 25% 25%, rgba(33, 128, 141, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(33, 128, 141, 0.02) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

html, body {
  height: 100%;
}

body {
  display: flex;
  flex-direction: column;
}

.main-container {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.hero-section {
  flex: 1;
  min-height: auto;
  padding: var(--space-32) 0;
}