:root {
  /* Color system */
  --color-white: #ffffff;
  --color-black: #000000;
  
  /* Neutral colors */
  --color-neutral-50: #f9fafb;
  --color-neutral-100: #f3f4f6;
  --color-neutral-200: #e5e7eb;
  --color-neutral-300: #d1d5db;
  --color-neutral-400: #9ca3af;
  --color-neutral-500: #6b7280;
  --color-neutral-600: #4b5563;
  --color-neutral-700: #374151;
  --color-neutral-800: #1f2937;
  --color-neutral-900: #111827;
  
  /* Primary colors */
  --color-primary-50: #f0f9ff;
  --color-primary-100: #e0f2fe;
  --color-primary-200: #bae6fd;
  --color-primary-300: #7dd3fc;
  --color-primary-400: #38bdf8;
  --color-primary-500: #0ea5e9;
  --color-primary-600: #0284c7;
  --color-primary-700: #0369a1;
  --color-primary-800: #075985;
  --color-primary-900: #0c4a6e;
  
  /* Accent colors */
  --color-accent-50: #fdf2f8;
  --color-accent-100: #fce7f3;
  --color-accent-200: #fbcfe8;
  --color-accent-300: #f9a8d4;
  --color-accent-400: #f472b6;
  --color-accent-500: #ec4899;
  --color-accent-600: #db2777;
  --color-accent-700: #be185d;
  --color-accent-800: #9d174d;
  --color-accent-900: #831843;
  
  /* Success colors */
  --color-success-500: #10b981;
  --color-success-600: #059669;
  
  /* Warning colors */
  --color-warning-500: #f59e0b;
  --color-warning-600: #d97706;
  
  /* Error colors */
  --color-error-500: #ef4444;
  --color-error-600: #dc2626;
  
  /* Spacing system (8px) */
  --space-1: 0.25rem;    /* 4px */
  --space-2: 0.5rem;     /* 8px */
  --space-3: 0.75rem;    /* 12px */
  --space-4: 1rem;       /* 16px */
  --space-5: 1.25rem;    /* 20px */
  --space-6: 1.5rem;     /* 24px */
  --space-8: 2rem;       /* 32px */
  --space-10: 2.5rem;    /* 40px */
  --space-12: 3rem;      /* 48px */
  --space-16: 4rem;      /* 64px */
  --space-20: 5rem;      /* 80px */
  --space-24: 6rem;      /* 96px */
  --space-32: 8rem;      /* 128px */
  
  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  
  /* Font sizes */
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */
  --text-4xl: 2.25rem;     /* 36px */
  --text-5xl: 3rem;        /* 48px */
  --text-6xl: 3.75rem;     /* 60px */
  
  /* Font weights */
  --font-thin: 100;
  --font-extralight: 200;
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;
  --font-black: 900;
  
  /* Line heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
  
  /* Border radius */
  --radius-sm: 0.125rem;   /* 2px */
  --radius: 0.25rem;       /* 4px */
  --radius-md: 0.375rem;   /* 6px */
  --radius-lg: 0.5rem;     /* 8px */
  --radius-xl: 0.75rem;    /* 12px */
  --radius-2xl: 1rem;      /* 16px */
  --radius-3xl: 1.5rem;    /* 24px */
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-all: all 0.3s ease;
  --transition-colors: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
  --transition-opacity: opacity 0.3s ease;
  --transition-transform: transform 0.3s ease;
  
  /* Z-index */
  --z-0: 0;
  --z-10: 10;
  --z-20: 20;
  --z-30: 30;
  --z-40: 40;
  --z-50: 50;
  --z-auto: auto;
  
  /* Light theme (default) colors */
  --color-bg-primary: var(--color-white);
  --color-bg-secondary: var(--color-neutral-50);
  --color-bg-tertiary: var(--color-neutral-100);
  --color-text-primary: var(--color-neutral-900);
  --color-text-secondary: var(--color-neutral-700);
  --color-text-tertiary: var(--color-neutral-500);
  --color-border: var(--color-neutral-200);
  --color-highlight: var(--color-primary-500);
  
  /* Container width */
  --container-width: 1280px;
  
  /* Header height */
  --header-height: 5rem;
}

/* Dark theme colors */
[data-theme="dark"] {
  --color-bg-primary: var(--color-neutral-900);
  --color-bg-secondary: var(--color-neutral-800);
  --color-bg-tertiary: var(--color-neutral-700);
  --color-text-primary: var(--color-neutral-50);
  --color-text-secondary: var(--color-neutral-300);
  --color-text-tertiary: var(--color-neutral-400);
  --color-border: var(--color-neutral-700);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
  transition: var(--transition-colors);
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-primary-600);
  text-decoration: none;
  transition: var(--transition-colors);
}

a:hover {
  color: var(--color-primary-500);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  font-size: inherit;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

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

@media (min-width: 768px) {
  h1 {
    font-size: var(--text-5xl);
  }
}

h2 {
  font-size: var(--text-3xl);
}

@media (min-width: 768px) {
  h2 {
    font-size: var(--text-4xl);
  }
}

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

h4 {
  font-size: var(--text-xl);
}

p {
  margin-bottom: var(--space-4);
}

.lead {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
}

@media (min-width: 768px) {
  .lead {
    font-size: var(--text-xl);
  }
}

.highlight {
  color: var(--color-highlight);
  position: relative;
  display: inline-block;
}

.highlight:after {
  content: '';
  position: absolute;
  bottom: 0.1em;
  left: 0;
  right: 0;
  height: 0.3em;
  background-color: var(--color-primary-100);
  z-index: -1;
  transition: var(--transition-all);
}

.highlight:hover:after {
  height: 0.6em;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-8);
  }
}

section {
  padding: var(--space-16) 0;
  position: relative;
}

@media (min-width: 768px) {
  section {
    padding: var(--space-24) 0;
  }
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
  position: relative;
}

.section-label {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-primary-600);
  margin-bottom: var(--space-2);
}

/* Header & Navigation */
#header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: var(--z-50);
  background-color: transparent;
  transition: var(--transition-all);
}

#header.scrolled {
  background-color: var(--color-bg-primary);
  box-shadow: var(--shadow);
}

.header-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: var(--font-bold);
  font-size: var(--text-xl);
  color: var(--color-text-primary);
  position: relative;
  padding: var(--space-2);
}

.logo:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-primary-100);
  border-radius: var(--radius);
  z-index: -1;
  transform: rotate(-3deg);
  transition: var(--transition-transform);
}

.logo:hover:before {
  transform: rotate(3deg);
}

.desktop-nav {
  display: none;
}

@media (min-width: 768px) {
  .desktop-nav {
    display: block;
  }
}

.desktop-nav ul {
  display: flex;
  list-style: none;
  gap: var(--space-8);
}

.nav-link {
  color: var(--color-text-primary);
  font-weight: var(--font-medium);
  position: relative;
  padding: var(--space-2) 0;
}

.nav-link:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary-500);
  transition: var(--transition-all);
}

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

/* Theme toggle */
#theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
  transition: var(--transition-all);
}

#theme-toggle:hover {
  background-color: var(--color-bg-tertiary);
  transform: scale(1.05);
}

#theme-toggle .sun-icon,
#theme-toggle .moon-icon {
  position: absolute;
  transition: var(--transition-transform), var(--transition-opacity);
}

[data-theme="light"] #theme-toggle .sun-icon {
  opacity: 0;
  transform: scale(0.5);
}

[data-theme="light"] #theme-toggle .moon-icon {
  opacity: 1;
  transform: scale(1);
}

[data-theme="dark"] #theme-toggle .sun-icon {
  opacity: 1;
  transform: scale(1);
}

[data-theme="dark"] #theme-toggle .moon-icon {
  opacity: 0;
  transform: scale(0.5);
}

/* Mobile menu */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 10;
}

@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: var(--transition-all);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--color-bg-primary);
  padding-top: var(--header-height);
  z-index: var(--z-40);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transform: translateX(100%);
  transition: var(--transition-transform);
}

.mobile-nav.active {
  transform: translateX(0);
}

.mobile-nav ul {
  list-style: none;
  text-align: center;
}

.mobile-nav-link {
  display: block;
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  padding: var(--space-4) var(--space-6);
}

/* Hero section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  position: relative;
}

.hero-content {
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .hero-section .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: center;
  }
  
  .hero-content {
    margin-bottom: 0;
  }
}

.hero-content h1 {
  margin-bottom: var(--space-4);
}

.hero-content h2 {
  font-size: var(--text-xl);
  font-weight: var(--font-medium);
  color: var(--color-primary-600);
  margin-bottom: var(--space-6);
}

.cta-group {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-weight: var(--font-medium);
  border-radius: var(--radius-full);
  transition: var(--transition-all);
  font-size: var(--text-base);
}

.button.primary {
  background-color: var(--color-primary-600);
  color: white;
}

.button.primary:hover {
  background-color: var(--color-primary-700);
  transform: translateY(-2px);
}

.button.secondary {
  background-color: transparent;
  border: 1px solid var(--color-primary-600);
  color: var(--color-primary-600);
}

.button.secondary:hover {
  background-color: var(--color-primary-50);
  transform: translateY(-2px);
}

.hero-image {
  position: relative;
}

.image-container {
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.image-container img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.floating-element {
  position: absolute;
  border-radius: var(--radius-full);
  background-color: var(--color-primary-100);
  filter: blur(20px);
  opacity: 0.8;
  z-index: -1;
  animation: float 6s ease-in-out infinite;
}

.e1 {
  width: 150px;
  height: 150px;
  top: -50px;
  right: -30px;
  background-color: var(--color-primary-100);
  animation-delay: 0s;
}

.e2 {
  width: 100px;
  height: 100px;
  bottom: 0;
  left: -30px;
  background-color: var(--color-accent-100);
  animation-delay: 2s;
}

.e3 {
  width: 70px;
  height: 70px;
  bottom: 100px;
  right: -20px;
  background-color: var(--color-success-500);
  opacity: 0.4;
  animation-delay: 4s;
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
  animation: bounce 2s infinite;
}

.scroll-indicator span {
  margin-bottom: var(--space-2);
}

/* About section */
.about-content {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .about-content {
    grid-template-columns: 2fr 3fr;
    align-items: center;
  }
}

.about-image img {
  border-radius: var(--radius-2xl);
  width: 100%;
  height: auto;
  object-fit: cover;
}

.about-text p:last-of-type {
  margin-bottom: var(--space-8);
}

.stats-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.stat-item {
  text-align: center;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-secondary);
  transition: var(--transition-all);
}

.stat-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.stat-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--color-primary-600);
  margin-bottom: var(--space-2);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* Skills section */
.skills-content {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .skills-content {
    grid-template-columns: repeat(3, 1fr);
  }
}

.skills-category {
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.skills-category h3 {
  margin-bottom: var(--space-6);
  position: relative;
  display: inline-block;
}

.skills-category h3:after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 40px;
  height: 3px;
  background-color: var(--color-primary-500);
}

.skill-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.skill-item {
  margin-bottom: var(--space-4);
}

.skill-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
}

.skill-percentage {
  font-weight: var(--font-semibold);
  color: var(--color-primary-600);
}

.skill-bar {
  height: 8px;
  width: 100%;
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background-color: var(--color-primary-500);
  border-radius: var(--radius-full);
  transition: width 1.5s ease-in-out;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.tool-item {
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  text-align: center;
  transition: var(--transition-all);
}

.tool-item:hover {
  transform: translateY(-3px);
  background-color: var(--color-primary-100);
  color: var(--color-primary-700);
}

/* Projects section */
.project-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.filter-btn {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  transition: var(--transition-all);
}

.filter-btn:hover, .filter-btn.active {
  background-color: var(--color-primary-600);
  color: white;
}

.projects-grid {
  display: grid;
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

@media (min-width: 640px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.project-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background-color: var(--color-bg-secondary);
  box-shadow: var(--shadow-md);
  transition: var(--transition-all);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.project-image {
  width: 100%;
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition-transform);
}

.project-card:hover .project-image img {
  transform: scale(1.05);
}

.project-info {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-info h3 {
  margin-bottom: var(--space-2);
  font-size: var(--text-lg);
}

.project-info p {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
  flex-grow: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.project-tags span {
  display: inline-block;
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-tertiary);
  border-radius: var(--radius-full);
}

.view-project {
  display: inline-block;
  color: var(--color-primary-600);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: var(--transition-colors);
}

.view-project:hover {
  color: var(--color-primary-500);
}

.projects-cta {
  text-align: center;
}

/* Contact section */
.contact-section {
  background-color: var(--color-bg-secondary);
}

.contact-content {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .contact-content {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-info p {
  margin-bottom: var(--space-6);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.contact-method {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.contact-method svg {
  color: var(--color-primary-600);
  flex-shrink: 0;
}

.contact-method h4 {
  margin-bottom: var(--space-1);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
}

.social-links {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  transition: var(--transition-all);
}

.social-link:hover {
  background-color: var(--color-primary-600);
  color: white;
  transform: translateY(-3px);
}

.contact-form {
  background-color: var(--color-bg-primary);
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--space-4);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: inherit;
  font-size: var(--text-base);
  transition: var(--transition-colors);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.contact-form button {
  width: 100%;
}

/* Footer */
footer {
  background-color: var(--color-bg-tertiary);
  padding: var(--space-12) 0 var(--space-4);
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.footer-logo a {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  display: inline-block;
}

.footer-logo p {
  color: var(--color-text-tertiary);
}

.footer-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.footer-nav a {
  color: var(--color-text-secondary);
}

.footer-nav a:hover {
  color: var(--color-primary-500);
}

.footer-bottom {
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  margin-bottom: 0;
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: var(--transition-transform);
}

.back-to-top:hover {
  transform: translateY(-3px);
}

/* Cursor */
#cursor {
  position: fixed;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: transparent;
  border: 2px solid var(--color-primary-500);
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.3s ease, width 0.3s ease, height 0.3s ease, border-width 0.3s ease;
}

@media (pointer: fine) {
  #cursor.visible {
    opacity: 0.5;
  }
  
  #cursor.link-hover {
    width: 60px;
    height: 60px;
    border-width: 3px;
    opacity: 0.3;
  }
}

/* Utility classes */
.delay-1 {
  animation-delay: 0.2s;
}

.delay-2 {
  animation-delay: 0.4s;
}

.delay-3 {
  animation-delay: 0.6s;
}

/* Media queries */
@media (max-width: 639px) {
  .cta-group {
    flex-direction: column;
  }
  
  .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  .scroll-indicator {
    animation: none;
  }
  
  .floating-element {
    animation: none;
  }
  
  .reveal-content,
  .reveal-image {
    animation: none;
    opacity: 1;
    transform: none;
  }
}