:root {
  /* Primitive Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-gray-400: rgba(119, 124, 124, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-brown-600: rgba(94, 82, 64, 1);
  --color-charcoal-700: rgba(31, 33, 33, 1);
  --color-charcoal-800: rgba(38, 40, 40, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-teal-300: rgba(50, 184, 198, 1);
  --color-teal-400: rgba(45, 166, 178, 1);
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-teal-600: rgba(29, 116, 128, 1);
  --color-teal-700: rgba(26, 104, 115, 1);
  --color-teal-800: rgba(41, 150, 161, 1);
  --color-red-400: rgba(255, 84, 89, 1);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-orange-400: rgba(230, 129, 97, 1);
  --color-orange-500: rgba(168, 75, 47, 1);

  /* RGB versions for opacity control */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  --color-slate-500-rgb: 98, 108, 113;
  --color-red-500-rgb: 192, 21, 47;
  --color-red-400-rgb: 255, 84, 89;
  --color-orange-500-rgb: 168, 75, 47;
  --color-orange-400-rgb: 230, 129, 97;

  /* Background color tokens (Light Mode) */
  --color-bg-1: rgba(59, 130, 246, 0.08); /* Light blue */
  --color-bg-2: rgba(245, 158, 11, 0.08); /* Light yellow */
  --color-bg-3: rgba(34, 197, 94, 0.08); /* Light green */
  --color-bg-4: rgba(239, 68, 68, 0.08); /* Light red */
  --color-bg-5: rgba(147, 51, 234, 0.08); /* Light purple */
  --color-bg-6: rgba(249, 115, 22, 0.08); /* Light orange */
  --color-bg-7: rgba(236, 72, 153, 0.08); /* Light pink */
  --color-bg-8: rgba(6, 182, 212, 0.08); /* Light cyan */

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-light: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-light: var(--color-teal-400);
  --color-secondary: var(--color-brown-600);
  --color-accent: var(--color-orange-500);
  --color-accent-light: var(--color-orange-400);
  --color-border: var(--color-gray-200);
  --color-input-bg: var(--color-white);
  --color-shadow: rgba(var(--color-slate-900-rgb), 0.1);

  /* Typography */
  --font-primary: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-secondary: 'Georgia', 'Times New Roman', serif;
  --font-mono: 'Fira Code', 'Courier New', monospace;

  /* Font sizes */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Breakpoints */
  --bp-mobile: 480px;
  --bp-tablet: 768px;
  --bp-desktop: 1024px;
  --bp-wide: 1200px;

  /* Animation */
  --transition-fast: 0.15s ease-out;
  --transition-base: 0.25s ease-out;
  --transition-slow: 0.4s ease-out;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(var(--color-slate-900-rgb), 0.05);
  --shadow-md: 0 4px 6px -1px rgba(var(--color-slate-900-rgb), 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(var(--color-slate-900-rgb), 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(var(--color-slate-900-rgb), 0.1);

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
}

/* Dark theme overrides */
[data-theme="dark"] {
  /* Semantic Color Tokens (Dark Mode) */
  --color-background: var(--color-charcoal-800);
  --color-surface: var(--color-charcoal-700);
  --color-text: var(--color-cream-50);
  --color-text-light: var(--color-gray-300);
  --color-primary: var(--color-teal-400);
  --color-primary-light: var(--color-teal-300);
  --color-secondary: var(--color-orange-400);
  --color-accent: var(--color-red-400);
  --color-accent-light: var(--color-red-400);
  --color-border: rgba(var(--color-gray-300), 0.2);
  --color-input-bg: var(--color-charcoal-700);
  --color-shadow: rgba(var(--color-black), 0.3);

  /* Background color tokens (Dark Mode) */
  --color-bg-1: rgba(59, 130, 246, 0.15);
  --color-bg-2: rgba(245, 158, 11, 0.15);
  --color-bg-3: rgba(34, 197, 94, 0.15);
  --color-bg-4: rgba(239, 68, 68, 0.15);
  --color-bg-5: rgba(147, 51, 234, 0.15);
  --color-bg-6: rgba(249, 115, 22, 0.15);
  --color-bg-7: rgba(236, 72, 153, 0.15);
  --color-bg-8: rgba(6, 182, 212, 0.15);
}

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

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-6);
  }
}

/* Section */
.section {
  padding: var(--space-20) 0;
}

.section__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-16);
  color: var(--color-text);
  position: relative;
}

.section__title::after {
  content: '';
  position: absolute;
  bottom: -var(--space-4);
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
}

/* Button Styles */
.btn {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  text-align: center;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(var(--color-background), 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: all var(--transition-base);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav__brand h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
}

.nav__menu {
  display: flex;
  list-style: none;
  align-items: center;
  gap: var(--space-6);
}

.nav__link {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-base);
  position: relative;
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

.nav__link:hover::after {
  width: 100%;
}

.theme-toggle {
  background: none;
  border: none;
  color: var(--color-text);
  font-size: var(--font-size-lg);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.theme-toggle:hover {
  background: var(--color-border);
  color: var(--color-primary);
}

.nav__toggle {
  display: none;
  font-size: var(--font-size-xl);
  color: var(--color-text);
  cursor: pointer;
}

/* Hero Section */
.hero {
  padding: 120px 0 var(--space-20);
  background: linear-gradient(135deg, var(--color-bg-1), var(--color-bg-3));
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(33,128,141,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.5;
}

.hero__container {
  position: relative;
  z-index: 2;
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  margin-bottom: var(--space-16);
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-light);
  margin-bottom: var(--space-6);
}

.hero__tagline {
  height: 60px;
  margin-bottom: var(--space-6);
}

.typing-text {
  font-size: var(--font-size-lg);
  color: var(--color-primary);
  font-weight: 600;
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.hero__buttons {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero__image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__profile {
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  animation: float 6s ease-in-out infinite;
}

.hero__icon {
  font-size: 120px;
  color: var(--color-white);
}

.hero__scroll {
  text-align: center;
}

.scroll-down {
  color: var(--color-primary);
  font-size: var(--font-size-xl);
  animation: bounce 2s infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  60% { transform: translateY(-5px); }
}

/* About Section */
.about__container {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: var(--space-8);
}

.about__info {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.about__box {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base);
}

.about__box:hover {
  transform: translateY(-5px);
}

.about__box i {
  font-size: var(--font-size-2xl);
  color: var(--color-primary);
}

.about__box h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.about__box p {
  color: var(--color-text-light);
}

.about__image {
  display: flex;
  justify-content: center;
}

.about__img {
  width: 250px;
  height: 250px;
  background: linear-gradient(135deg, var(--color-bg-5), var(--color-bg-7));
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
}

.about__img i {
  font-size: 80px;
  color: var(--color-primary);
}

/* Skills Section */
.skills {
  background: var(--color-surface);
}

.skills__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

.skills__category {
  background: var(--color-background);
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base);
}

.skills__category:hover {
  transform: translateY(-5px);
}

.skills__category h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-6);
  color: var(--color-primary);
  text-align: center;
}

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

.skill__info {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-2);
}

.skill__name {
  font-weight: 600;
}

.skill__percentage {
  color: var(--color-primary);
  font-weight: 600;
}

.skill__bar {
  height: 8px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill__progress {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
  width: 0%;
}

/* Projects Section */
.projects__filters {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
  flex-wrap: wrap;
}

.projects__filter {
  padding: var(--space-3) var(--space-5);
  background: var(--color-surface);
  border: none;
  border-radius: var(--radius-full);
  color: var(--color-text);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

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

.projects__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
}

.project {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  opacity: 1;
  transform: scale(1);
}

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

.project.hide {
  opacity: 0;
  transform: scale(0.8);
  pointer-events: none;
}

.project__image {
  height: 200px;
  background: linear-gradient(135deg, var(--color-bg-1), var(--color-bg-3));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.project__image i {
  font-size: 60px;
  color: var(--color-primary);
}

.project__content {
  padding: var(--space-6);
}

.project__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.project__description {
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.project__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.tech-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-full);
}

.project__links {
  display: flex;
  gap: var(--space-4);
}

.project__link {
  padding: var(--space-2) var(--space-4);
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  text-decoration: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-base);
}

.project__link:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* Blog Section */
.blog {
  background: var(--color-surface);
}

.blog__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.blog__card {
  background: var(--color-background);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base);
}

.blog__card:hover {
  transform: translateY(-5px);
}

.blog__image {
  height: 200px;
  background: linear-gradient(135deg, var(--color-bg-2), var(--color-bg-4));
  display: flex;
  align-items: center;
  justify-content: center;
}

.blog__image i {
  font-size: 50px;
  color: var(--color-primary);
}

.blog__content {
  padding: var(--space-6);
}

.blog__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.blog__category {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.blog__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.blog__title a {
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

.blog__excerpt {
  color: var(--color-text-light);
  line-height: 1.6;
}

.blog__button {
  text-align: center;
}

/* Contact Section */
.contact__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
}

.contact__info {
  display: grid;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.contact__card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.contact__card i {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
}

.contact__card h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.contact__social {
  margin-top: var(--space-8);
}

.contact__social h3 {
  margin-bottom: var(--space-4);
  font-size: var(--font-size-lg);
}

.contact__social-links {
  display: flex;
  gap: var(--space-4);
}

.social-link {
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-size: var(--font-size-lg);
  transition: all var(--transition-base);
}

.social-link:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.contact__form {
  display: grid;
  gap: var(--space-6);
}

.contact__form-div {
  position: relative;
}

.contact__form-input {
  width: 100%;
  padding: var(--space-4);
  background: var(--color-input-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  color: var(--color-text);
  transition: border-color var(--transition-base);
}

.contact__form-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.contact__form-input::placeholder {
  color: var(--color-text-light);
}

/* Footer */
.footer {
  background: var(--color-surface);
  padding: var(--space-12) 0;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer__content p {
  color: var(--color-text-light);
  margin-bottom: var(--space-2);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.modal.show {
  display: flex;
}

.modal__content {
  background: var(--color-background);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  animation: modalSlideIn 0.3s ease-out;
}

.modal__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--color-text);
  cursor: pointer;
  z-index: 1;
}

.modal__body {
  padding: var(--space-8);
}

@keyframes modalSlideIn {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Admin Panel Styles */
.admin-tabs {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

.admin-tab {
  padding: 0.75rem 1.5rem;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.3s ease;
}

.admin-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.admin-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.admin-form input,
.admin-form select,
.admin-form textarea {
  padding: 0.75rem;
  border: 2px solid var(--color-border);
  border-radius: 0.5rem;
  background: var(--color-input-bg);
  color: var(--color-text);
  font-size: 1rem;
}

.admin-form input:focus,
.admin-form select:focus,
.admin-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.admin-form label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-12);
  }

  .about__container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .contact__container {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
}

@media (max-width: 768px) {
  .nav__menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--color-background);
    flex-direction: column;
    justify-content: start;
    padding-top: var(--space-8);
    transition: left var(--transition-base);
  }

  .nav__menu.show {
    left: 0;
  }

  .nav__toggle {
    display: block;
  }

  .hero {
    padding: 100px 0 var(--space-16);
  }

  .hero__title {
    font-size: var(--font-size-4xl);
  }

  .hero__profile {
    width: 250px;
    height: 250px;
  }

  .hero__icon {
    font-size: 80px;
  }

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

  .section__title {
    font-size: var(--font-size-2xl);
  }

  .hero__buttons {
    justify-content: center;
  }

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

  .projects__filters {
    justify-content: center;
  }

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

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-3);
  }

  .hero__title {
    font-size: var(--font-size-3xl);
  }

  .hero__buttons {
    flex-direction: column;
    align-items: center;
  }

  .projects__filters {
    flex-direction: column;
    align-items: center;
  }

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

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

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Loading Animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--color-border);
  border-radius: 50%;
  border-top-color: var(--color-primary);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Notification Animation */
@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }

.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.color-primary { color: var(--color-primary); }
.color-text { color: var(--color-text); }
.color-text-light { color: var(--color-text-light); }

.bg-surface { background-color: var(--color-surface); }
.bg-primary { background-color: var(--color-primary); }