/* Material Design Portfolio - Jānis Brīvvīrs */
/* ========================================== */

/* Material Design CSS Variables */
:root {
  --md-primary: #6200ee;
  --md-primary-variant: #3700b3;
  --md-secondary: #03dac6;
  --md-secondary-dark: #018786;
  --md-background: #fafafa;
  --md-surface: #ffffff;
  --md-error: #b00020;
  --md-on-primary: #ffffff;
  --md-on-secondary: #000000;
  --md-on-background: #1a1a2e;
  --md-on-surface: #1a1a2e;
  --md-text-primary: rgba(0, 0, 0, 0.87);
  --md-text-secondary: rgba(0, 0, 0, 0.6);
  --md-text-disabled: rgba(0, 0, 0, 0.38);
  --md-divider: rgba(0, 0, 0, 0.12);
  --elevation-1: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
  --elevation-2: 0 3px 6px rgba(0,0,0,0.16), 0 3px 6px rgba(0,0,0,0.23);
  --elevation-3: 0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
  --elevation-4: 0 14px 28px rgba(0,0,0,0.25), 0 10px 10px rgba(0,0,0,0.22);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --font-family: "Roboto", "Inter", -apple-system, sans-serif;
  --font-medium: 500;
  --font-regular: 400;
  --font-bold: 700;
}

/* Reset and Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--md-background);
  color: var(--md-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========================================== */
/* MATERIAL DESIGN COMPONENTS */
/* ========================================== */

/* Navigation Bar - Material Design Fixed App Bar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--md-primary);
  color: var(--md-on-primary);
  box-shadow: var(--elevation-2);
  transition: var(--transition-normal);
}

.navbar.scrolled {
  background-color: var(--md-primary-variant);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: var(--font-bold);
  letter-spacing: 1px;
}

.nav-logo .dot {
  color: var(--md-secondary);
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  position: relative;
  font-weight: var(--font-medium);
  padding: 8px 0;
  color: rgba(255, 255, 255, 0.87);
  transition: var(--transition-fast);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--md-secondary);
  transition: var(--transition-normal);
}

.nav-links a:hover {
  color: var(--md-on-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Mobile Menu - Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.hamburger span {
  width: 24px;
  height: 2px;
  background-color: var(--md-on-primary);
  border-radius: 2px;
  transition: var(--transition-normal);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 60px;
  background: linear-gradient(135deg, var(--md-primary) 0%, var(--md-primary-variant) 100%);
  color: var(--md-on-primary);
}

.hero-content {
  display: flex;
  gap: 48px;
  max-width: 1200px;
  width: 100%;
  align-items: center;
}

.hero-text {
  flex: 1;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease-out forwards;
}

.hero-greeting {
  font-size: 1.1rem;
  font-weight: var(--font-medium);
  color: var(--md-secondary);
  margin-bottom: 8px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hero-name {
  font-size: 3.5rem;
  font-weight: var(--font-bold);
  line-height: 1.1;
  margin-bottom: 8px;
}

.hero-title {
  font-size: 1.5rem;
  font-weight: var(--font-regular);
  color: rgba(255, 255, 255, 0.87);
  margin-bottom: 24px;
}

.hero-description {
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-description strong {
  color: var(--md-secondary);
  font-weight: var(--font-medium);
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
}

/* Material Design Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: var(--border-radius-sm);
  font-weight: var(--font-medium);
  font-size: 0.9rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition-fast);
  border: none;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background-color: var(--md-secondary);
  color: var(--md-on-secondary);
  box-shadow: var(--elevation-2);
}

.btn-primary:hover {
  background-color: var(--md-secondary-dark);
  box-shadow: var(--elevation-3);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--md-on-primary);
  border: 1px solid rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  border-color: var(--md-secondary);
  background-color: rgba(255, 255, 255, 0.05);
  transform: translateY(-2px);
}

.hero-socials {
  display: flex;
  gap: 12px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--md-on-primary);
  font-size: 1.2rem;
  transition: var(--transition-normal);
}

.social-link:hover {
  background-color: var(--md-secondary);
  color: var(--md-on-secondary);
  transform: translateY(-3px);
}

.hero-photo {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s 0.1s ease-out forwards;
  min-width: 0;
}

.photo-frame {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-lg);
  padding: 8px;
  box-shadow: var(--elevation-3);
  min-width: 0;
}

.profile-photo {
  width: 280px;
  height: 280px;
  border-radius: var(--border-radius-lg);
  object-fit: cover;
  display: block;
  min-width: 0;
}

/* Code Window - Material Design Card */
.hero-code {
  flex: 1;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s 0.2s ease-out forwards;
}

.code-window {
  background-color: #1a1a2e;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--elevation-3);
  overflow: hidden;
}

.code-header {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  background-color: #0d0d17;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  margin-right: 8px;
}

.code-dot.red { background-color: #ff5f57; }
.code-dot.yellow { background-color: #febc2e; }
.code-dot.green { background-color: #28c840; }

.code-title {
  margin-left: 8px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

.code-body {
  padding: 24px;
  overflow-x: auto;
}

.code-body pre {
  font-family: 'Courier New', monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  color: #a8a8c8;
}

.code-keyword { color: #7c4dff; }
.code-class { color: #03dac6; }
.code-string { color: #8bd8a9; }
.code-number { color: #ffab40; }

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: pointer;
}

.mouse {
  width: 26px;
  height: 40px;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 16px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.wheel {
  width: 4px;
  height: 8px;
  background-color: var(--md-secondary);
  border-radius: 2px;
  animation: scrollWheel 2s infinite;
}

@keyframes scrollWheel {
  0% { opacity: 0; transform: translateY(0); }
  50% { opacity: 1; }
  100% { opacity: 0; transform: translateY(10px); }
}

/* ========================================== */
/* ABOUT SECTION */
/* ========================================== */

.about {
  padding: 100px 0;
  background-color: var(--md-background);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: linear-gradient(135deg, var(--md-primary), var(--md-primary-variant));
  color: var(--md-on-primary);
  font-size: 0.75rem;
  font-weight: var(--font-medium);
  text-transform: uppercase;
  letter-spacing: 2px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: var(--font-bold);
  color: var(--md-text-primary);
  line-height: 1.2;
}

.section-title .accent {
  color: var(--md-primary);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.about-text p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--md-text-secondary);
  margin-bottom: 20px;
}

.about-text p strong {
  color: var(--md-text-primary);
  font-weight: var(--font-medium);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
  padding-top: 40px;
  border-top: 1px solid var(--md-divider);
}

.stat {
  text-align: center;
  padding: 20px;
  background-color: var(--md-surface);
  border-radius: var(--border-radius-md);
  box-shadow: var(--elevation-1);
  transition: var(--transition-normal);
}

.stat:hover {
  box-shadow: var(--elevation-2);
  transform: translateY(-4px);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: var(--font-bold);
  color: var(--md-primary);
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--md-text-secondary);
  margin-top: 4px;
}

/* Info Card - Material Design */
.info-card {
  background-color: var(--md-surface);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--elevation-2);
  overflow: hidden;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 24px;
  border-bottom: 1px solid var(--md-divider);
  transition: var(--transition-fast);
}

.info-item:last-child {
  border-bottom: none;
}

.info-item:hover {
  background-color: rgba(98, 0, 238, 0.04);
}

.info-item i {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--md-primary), var(--md-primary-variant));
  color: var(--md-on-primary);
  border-radius: 50%;
  font-size: 1.2rem;
}

.info-item h4 {
  font-size: 0.8rem;
  font-weight: var(--font-medium);
  color: var(--md-text-disabled);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.info-item p {
  font-size: 1rem;
  color: var(--md-text-primary);
  font-weight: var(--font-medium);
}

.info-sub {
  font-size: 0.85rem !important;
  color: var(--md-text-secondary) !important;
  font-weight: var(--font-regular) !important;
  margin-top: 2px;
}

/* ========================================== */
/* EXPERIENCE SECTION */
/* ========================================== */

.experience {
  padding: 100px 0;
  background-color: #f5f5f5;
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background-color: var(--md-divider);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
  width: 50%;
  padding-right: 40px;
}

.timeline-item:nth-child(even) {
  margin-left: 50%;
  padding-right: 0;
  padding-left: 40px;
}

.timeline-dot {
  position: absolute;
  right: -8px;
  top: 0;
  width: 16px;
  height: 16px;
  background-color: var(--md-primary);
  border-radius: 50%;
  border: 3px solid var(--md-surface);
  box-shadow: var(--elevation-1);
}

.timeline-item:nth-child(even) .timeline-dot {
  right: auto;
  left: -8px;
}

.timeline-date {
  display: inline-block;
  padding: 4px 12px;
  background-color: var(--md-primary);
  color: var(--md-on-primary);
  font-size: 0.75rem;
  font-weight: var(--font-medium);
  border-radius: var(--border-radius-sm);
  margin-bottom: 12px;
}

.timeline-content {
  background-color: var(--md-surface);
  padding: 28px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--elevation-2);
  transition: var(--transition-normal);
}

.timeline-content:hover {
  box-shadow: var(--elevation-3);
  transform: translateY(-4px);
}

.timeline-content h3 {
  font-size: 1.25rem;
  font-weight: var(--font-bold);
  color: var(--md-text-primary);
  margin-bottom: 4px;
}

.timeline-content h4 {
  font-size: 1rem;
  font-weight: var(--font-medium);
  color: var(--md-primary);
  margin-bottom: 2px;
}

.timeline-content p {
  font-size: 0.9rem;
  color: var(--md-text-secondary);
  margin-bottom: 16px;
}

.timeline-content ul {
  list-style: disc;
  padding-left: 20px;
  margin-bottom: 16px;
}

.timeline-content li {
  font-size: 0.9rem;
  color: var(--md-text-secondary);
  line-height: 1.6;
  margin-bottom: 6px;
}

.timeline-content li::marker {
  color: var(--md-primary);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tags span {
  display: inline-block;
  padding: 4px 12px;
  background-color: rgba(98, 0, 238, 0.1);
  color: var(--md-primary);
  font-size: 0.75rem;
  font-weight: var(--font-medium);
  border-radius: 16px;
  transition: var(--transition-fast);
}

.tags span:hover {
  background-color: var(--md-primary);
  color: var(--md-on-primary);
}

/* ========================================== */
/* SKILLS SECTION */
/* ========================================== */

.skills {
  padding: 100px 0;
  background-color: var(--md-background);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.skill-card {
  background-color: var(--md-surface);
  padding: 32px;
  border-radius: var(--border-radius-md);
  box-shadow: var(--elevation-1);
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--md-primary), var(--md-secondary));
  transform: scaleX(0);
  transition: var(--transition-normal);
}

.skill-card:hover {
  box-shadow: var(--elevation-2);
  transform: translateY(-6px);
}

.skill-card:hover::before {
  transform: scaleX(1);
}

.skill-card i {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--md-primary), var(--md-primary-variant));
  color: var(--md-on-primary);
  font-size: 1.5rem;
  border-radius: var(--border-radius-md);
  margin-bottom: 20px;
}

.skill-card h3 {
  font-size: 1.15rem;
  font-weight: var(--font-bold);
  color: var(--md-text-primary);
  margin-bottom: 8px;
}

.skill-card p {
  font-size: 0.9rem;
  color: var(--md-text-secondary);
  margin-bottom: 20px;
  line-height: 1.5;
}

.skill-level {
  width: 100%;
  height: 4px;
  background-color: var(--md-divider);
  border-radius: 2px;
  overflow: hidden;
}

.skill-level span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--md-primary), var(--md-secondary));
  border-radius: 2px;
  transition: width 1s ease-out;
}

/* ========================================== */
/* CONTACT SECTION */
/* ========================================== */

.contact {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--md-primary) 0%, var(--md-primary-variant) 100%);
  color: var(--md-on-primary);
}

.contact .section-tag {
  background-color: rgba(255, 255, 255, 0.2);
}

.contact .section-title {
  color: var(--md-on-primary);
}

.contact .section-title .accent {
  color: var(--md-secondary);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-md);
  transition: var(--transition-normal);
  cursor: pointer;
}

.contact-method:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: translateX(8px);
}

.contact-method i {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--md-secondary);
  color: var(--md-on-secondary);
  font-size: 1.3rem;
  border-radius: 50%;
}

.contact-method h3 {
  font-size: 0.75rem;
  font-weight: var(--font-medium);
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: 0.7;
  margin-bottom: 4px;
}

.contact-method p {
  font-size: 1rem;
  font-weight: var(--font-medium);
}

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

.contact-note p {
  font-size: 1.1rem;
  line-height: 1.7;
  opacity: 0.9;
  margin-bottom: 32px;
}

.contact .btn-primary {
  background-color: var(--md-secondary);
  color: var(--md-on-secondary);
  padding: 16px 40px;
  font-size: 1rem;
}

/* ========================================== */
/* FOOTER */
/* ========================================== */

.footer {
  padding: 32px 0;
  background-color: var(--md-on-surface);
  color: rgba(255, 255, 255, 0.87);
}

.footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer p {
  font-size: 0.9rem;
}

.footer-socials {
  display: flex;
  gap: 16px;
}

.footer-socials a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.87);
  transition: var(--transition-fast);
}

.footer-socials a:hover {
  background-color: var(--md-primary);
  color: var(--md-on-primary);
  transform: translateY(-3px);
}

/* ========================================== */
/* ANIMATIONS */
/* ========================================== */

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ========================================== */
/* RESPONSIVE DESIGN */
/* ========================================== */

@media (max-width: 1024px) {
  .hero-content {
    flex-direction: column-reverse;
    text-align: center;
  }

  .hero-text {
    width: 100%;
  }

  .hero-description {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-socials {
    justify-content: center;
  }

  .hero-photo {
    width: 100%;
  }

  .profile-photo {
    width: 220px;
    height: 220px;
  }

  .hero-code {
    width: 100%;
    max-width: 500px;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

  .contact-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    width: 100%;
    padding-left: 60px;
    padding-right: 0;
  }

  .timeline-item:nth-child(even) {
    margin-left: 0;
    padding-left: 60px;
  }

  .timeline-dot {
    left: 12px;
    right: auto;
  }

  .timeline-item:nth-child(even) .timeline-dot {
    left: 12px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background-color: var(--md-primary-variant);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-normal);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .hamburger {
    display: flex;
  }

  .hero-name {
    font-size: 2.5rem;
  }

  .section-title {
    font-size: 2rem;
  }

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

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

  .footer .container {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 100px 16px 40px;
  }

  .hero-name {
    font-size: 2rem;
  }

  .hero-title {
    font-size: 1.2rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  .code-body {
    padding: 16px;
  }

.code-body pre {
    font-size: 0.75rem;
  }

  .profile-photo {
    width: 180px;
    height: 180px;
  }

  .container {
    padding: 0 16px;
  }
}

/* ========================================== */
/* AI & LLM SECTION */
/* ========================================== */

.ai-section {
  padding: 100px 0;
  background-color: #f5f5f5;
}

.ai-section .section-title {
  font-size: 2.5rem;
}

.ai-intro {
  max-width: 800px;
  margin: 0 auto 48px;
}

.ai-intro-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background-color: var(--md-surface);
  padding: 28px;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--elevation-2);
  border-left: 4px solid var(--md-primary);
  transition: var(--transition-normal);
}

.ai-intro-card:hover {
  box-shadow: var(--elevation-3);
  transform: translateY(-4px);
}

.ai-intro-card > i {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--md-primary), var(--md-primary-variant));
  color: var(--md-on-primary);
  font-size: 1.8rem;
  border-radius: 50%;
  flex-shrink: 0;
}

.ai-intro-card h3 {
  font-size: 1.25rem;
  font-weight: var(--font-bold);
  color: var(--md-text-primary);
  margin-bottom: 8px;
}

.ai-intro-card p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--md-text-secondary);
}

.ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}

.ai-category {
  background-color: var(--md-surface);
  padding: 28px;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--elevation-1);
  transition: var(--transition-normal);
}

.ai-category:hover {
  box-shadow: var(--elevation-2);
}

.ai-category > h3 {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.15rem;
  font-weight: var(--font-bold);
  color: var(--md-primary);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--md-divider);
}

.ai-category > h3 i {
  font-size: 1.2rem;
}

.ai-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.ai-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px;
  background-color: rgba(98, 0, 238, 0.04);
  border-radius: var(--border-radius-md);
  transition: var(--transition-normal);
  cursor: pointer;
}

.ai-item:hover {
  background-color: rgba(98, 0, 238, 0.08);
  transform: translateX(8px);
}

.ai-icon {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--md-primary), var(--md-secondary));
  color: var(--md-on-primary);
  font-size: 1.1rem;
  border-radius: var(--border-radius-md);
  flex-shrink: 0;
}

.ai-item h4 {
  font-size: 0.95rem;
  font-weight: var(--font-bold);
  color: var(--md-text-primary);
  margin-bottom: 4px;
}

.ai-item p {
  font-size: 0.85rem;
  color: var(--md-text-secondary);
  line-height: 1.5;
}

.ai-passion {
  max-width: 800px;
  margin: 0 auto;
}

.passion-card {
  background: linear-gradient(135deg, var(--md-primary) 0%, var(--md-primary-variant) 100%);
  color: var(--md-on-primary);
  padding: 32px;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--elevation-2);
  transition: var(--transition-normal);
}

.passion-card:hover {
  box-shadow: var(--elevation-3);
  transform: translateY(-4px);
}

.passion-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.passion-header i {
  font-size: 1.8rem;
  color: #ff1744;
}

.passion-header h3 {
  font-size: 1.25rem;
  font-weight: var(--font-bold);
}

.passion-card p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.87);
  margin-bottom: 20px;
}

.passion-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.passion-tags span {
  display: inline-block;
  padding: 6px 14px;
  background-color: rgba(255, 255, 255, 0.15);
  color: var(--md-on-primary);
  font-size: 0.8rem;
  font-weight: var(--font-medium);
  border-radius: 20px;
  transition: var(--transition-fast);
}

.passion-tags span:hover {
  background-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 768px) {
  .ai-grid {
    grid-template-columns: 1fr;
  }

  .ai-intro-card {
    flex-direction: column;
  }

  .passion-card {
    padding: 24px;
  }
}