/* ===== CSS RESET & BASE ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Colors */
  --primary-color: #ff4c60;
  --primary-dark: #e63946;
  --secondary-color: #4d7cfe;
  --accent-color: #00d4aa;
  
  /* Background Colors */
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-tertiary: #1a1a1a;
  --bg-card: #161616;
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #b8b8b8;
  --text-muted: #888888;
  
  /* Border Colors */
  --border-primary: #333333;
  --border-secondary: #444444;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
  --gradient-secondary: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
  --gradient-bg: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 16px 32px rgba(0, 0, 0, 0.25);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --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;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

/* ===== LIGHT THEME (data-theme="light") ===== */
[data-theme="light"] {
  --bg-primary: #f7f8fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f3f5;
  --bg-card: #ffffff;
  --text-primary: #0b0c0e;
  --text-secondary: #3f444a;
  --text-muted: #6b7280;
  --border-primary: #e5e7eb;
  --border-secondary: #d1d5db;
}

/* ===== BASE STYLES ===== */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

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

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  position: relative;
  display: inline-block;
}

.title-number {
  color: var(--primary-color);
  font-size: var(--font-size-lg);
  font-weight: 400;
  margin-right: var(--spacing-sm);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--radius-full);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

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

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

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

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

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

/* ===== NAVIGATION ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-primary);
  transition: var(--transition-normal);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: 80px;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-left: var(--spacing-lg);
  border-radius: var(--radius-full);
  border: 1px solid var(--border-primary);
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition-normal);
}

.theme-toggle:hover {
  transform: translateY(-2px);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.nav-logo .logo-text {
  font-size: var(--font-size-xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo-image {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  display: inline-block;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), filter var(--transition-normal);
}

.logo-image:hover {
  transform: scale(1.06);
  box-shadow: 0 0 0 4px rgba(255, 76, 96, 0.15);
  filter: saturate(1.2);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
  margin: 0;
  padding: 0;
  margin-left: auto;
}

.nav-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  position: relative;
  transition: var(--transition-normal);
}

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

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--primary-color);
}

.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  margin-left: auto;
}

.hamburger {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: var(--transition-normal);
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(255, 76, 96, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(77, 124, 254, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  width: 100%;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  min-height: 80vh;
}

.hero-text {
  animation: fadeInUp 1s ease-out;
}

.hero-greeting {
  font-size: var(--font-size-lg);
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
  font-weight: 500;
}

.hero-title {
  font-size: var(--font-size-6xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
}

.hero-name {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-3xl);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  color: var(--text-secondary);
}

.highlight {
  color: var(--primary-color);
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.hero-social {
  display: flex;
  gap: var(--spacing-lg);
}

.hero-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--bg-card);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  text-decoration: none;
  transition: var(--transition-normal);
  border: 1px solid var(--border-primary);
}

.hero-social a:hover {
  background: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeInRight 1s ease-out;
}

.hero-image-container {
  position: relative;
  width: 300px;
  height: 300px;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-2xl);
  border: 3px solid var(--primary-color);
  box-shadow: var(--shadow-xl);
}

.hero-decoration {
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  border: 2px solid var(--primary-color);
  border-radius: var(--radius-2xl);
  opacity: 0.3;
  animation: rotate 20s linear infinite;
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.scroll-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-normal);
}

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

.scroll-text {
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.scroll-arrow {
  font-size: var(--font-size-lg);
}

/* ===== PROJECTS SECTION ===== */
.projects {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-secondary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

.project-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--transition-normal);
  border: 1px solid var(--border-primary);
  position: relative;
}

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

.project-card.featured {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--bg-card), rgba(255, 76, 96, 0.05));
}

.project-image {
  position: relative;
  overflow: hidden;
  height: 250px;
}

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

.project-card:hover .project-image img {
  transform: scale(1.1);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-normal);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-links {
  display: flex;
  gap: var(--spacing-lg);
}

.project-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  border-radius: var(--radius-full);
  color: white;
  text-decoration: none;
  transition: var(--transition-normal);
}

.project-links a:hover {
  transform: scale(1.1);
  background: var(--primary-dark);
}

.project-content {
  padding: var(--spacing-xl);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
}

.project-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.project-badge {
  background: var(--gradient-primary);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

.project-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.tech-tag {
  background: rgba(255, 76, 96, 0.1);
  color: var(--primary-color);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: 1px solid rgba(255, 76, 96, 0.2);
}

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

/* ===== ABOUT SECTION ===== */
.about {
  padding: var(--spacing-3xl) 0;
}

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

.about-text h3 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.about-text h4 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--primary-color);
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-primary);
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
}

.about-image {
  display: flex;
  justify-content: center;
}

.image-container {
  position: relative;
  width: 300px;
  height: 300px;
}

.image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-2xl);
  border: 3px solid var(--primary-color);
}

.image-decoration {
  position: absolute;
  top: -20px;
  left: -20px;
  right: -20px;
  bottom: -20px;
  border: 2px solid var(--primary-color);
  border-radius: var(--radius-2xl);
  opacity: 0.3;
  animation: rotate 20s linear infinite reverse;
}

/* ===== SKILLS SECTION ===== */
.skills {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-secondary);
}

.skills-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-3xl);
}

.skills-categories {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.skill-category {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-primary);
}

.category-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.category-title i {
  color: var(--primary-color);
}

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

.skill-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.skill-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.skill-name {
  font-weight: 600;
  color: var(--text-primary);
}

.skill-level {
  font-size: var(--font-size-sm);
  color: var(--primary-color);
  font-weight: 500;
}

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

.skill-progress {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
  width: 0;
}

.tech-tags {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-primary);
}

.tech-tags h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.tags-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

/* ===== CONTACT SECTION ===== */
.contact {
  padding: var(--spacing-3xl) 0;
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
}

.contact-intro h3 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.contact-intro p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-xl);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-primary);
  transition: var(--transition-normal);
}

.contact-method:hover {
  border-color: var(--primary-color);
  transform: translateX(10px);
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  color: white;
  font-size: var(--font-size-lg);
}

.contact-details h4 {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.contact-details a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-normal);
}

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

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

.cta-card {
  background: var(--bg-card);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-primary);
  text-align: center;
  max-width: 400px;
}

.cta-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.cta-card p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

/* ===== FORM CONTROLS ===== */
input[type="text"],
input[type="email"],
input[type="number"],
input[type="search"],
input[type="password"],
input[type="url"],
select,
textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-primary);
  background: var(--bg-card);
  color: var(--text-primary);
  transition: var(--transition-normal);
  box-shadow: 0 0 0 0 rgba(255, 76, 96, 0.2);
}

input::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(255, 76, 96, 0.15);
}

input:disabled,
select:disabled,
textarea:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Fancy select */
select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--text-muted) 50%),
    linear-gradient(135deg, var(--text-muted) 50%, transparent 50%);
  background-position: calc(100% - 20px) calc(1em + 2px), calc(100% - 15px) calc(1em + 2px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--bg-tertiary);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  border-top: 1px solid var(--border-primary);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.footer-logo .logo-text {
  font-size: var(--font-size-xl);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-logo-image {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), filter var(--transition-normal);
}

.footer-logo-image:hover {
  transform: scale(1.06);
  box-shadow: 0 0 0 4px rgba(255, 76, 96, 0.15);
  filter: saturate(1.2);
}

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

.footer-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.footer-section h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-normal);
}

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

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

.footer-copyright {
  color: var(--text-muted);
}

.footer-made {
  color: var(--text-muted);
}

.heart {
  color: var(--primary-color);
  animation: heartbeat 1.5s ease-in-out infinite;
}

/* ===== BACK TO TOP ===== */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-full);
  color: white;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
  z-index: var(--z-fixed);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

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

/* ===== CUSTOM CURSOR ===== */
.cursor {
  position: fixed;
  left: 0;
  top: 0;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  background: var(--primary-color);
  border-radius: var(--radius-full);
  pointer-events: none;
  z-index: var(--z-tooltip);
  transition: transform 0.1s ease;
  mix-blend-mode: difference;
}

.cursor-follower {
  position: fixed;
  left: 0;
  top: 0;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border: 2px solid var(--primary-color);
  border-radius: var(--radius-full);
  pointer-events: none;
  z-index: var(--z-tooltip);
  transition: transform 0.3s ease;
  opacity: 0.5;
}

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

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

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

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes heartbeat {
  0% {
    transform: scale(1);
  }
  14% {
    transform: scale(1.3);
  }
  28% {
    transform: scale(1);
  }
  42% {
    transform: scale(1.3);
  }
  70% {
    transform: scale(1);
  }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-2xl);
  }
  
  .hero-title {
    font-size: var(--font-size-5xl);
  }
  
  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .skills-content {
    grid-template-columns: 1fr;
  }
  
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: var(--spacing-xl);
    transform: translateY(-100%);
    transition: var(--transition-normal);
    border-bottom: 1px solid var(--border-primary);
  }
  
  .nav-menu.active {
    transform: translateY(0);
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .nav-toggle.active .hamburger:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav-toggle.active .hamburger:nth-child(2) {
    opacity: 0;
  }
  
  .nav-toggle.active .hamburger:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-2xl);
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .project-card.featured {
    grid-column: span 1;
  }
  
  .about-stats {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-xl);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-image-container,
  .image-container {
    width: 250px;
    height: 250px;
  }
  
  .btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
  }
  
  .back-to-top {
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    width: 45px;
    height: 45px;
  }
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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

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

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

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

/* ===== LOADING STATES ===== */
.loading {
  opacity: 0.5;
  pointer-events: none;
}

/* ===== FOCUS STYLES ===== */
:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Remove outline when focus não é visível (ex.: clique do mouse) */
.btn:focus:not(:focus-visible),
.nav-link:focus:not(:focus-visible),
.theme-toggle:focus:not(:focus-visible),
.back-to-top:focus:not(:focus-visible),
.project-links a:focus:not(:focus-visible),
.botao-contato:focus:not(:focus-visible),
button:focus:not(:focus-visible),
a:focus:not(:focus-visible) {
  outline: none;
  box-shadow: none;
}

/* Remove tap highlight no mobile */
a, button, .btn, .nav-link, .project-links a, .theme-toggle, .back-to-top {
  -webkit-tap-highlight-color: transparent;
}

/* Firefox: remove inner border no click */
button::-moz-focus-inner { border: 0; }

/* ===== SELECTION STYLES ===== */
::selection {
  background: var(--primary-color);
  color: white;
}

::-moz-selection {
  background: var(--primary-color);
  color: white;
}