/* =============================================================================
   ENHANCED PORTFOLIO CSS - MODERN & PRODUCTION READY
   ============================================================================= */

/* CSS Custom Properties (Enhanced Color System) */
:root {
  /* Primary Color Palette */
  --primary-50: #fef2f2;
  --primary-100: #fee2e2;
  --primary-200: #fecaca;
  --primary-300: #fca5a5;
  --primary-400: #f87171;
  --primary-500: #ef4444;
  --primary-600: #dc2626;
  --primary-700: #b91c1c;
  --primary-800: #991b1b;
  --primary-900: #7f1d1d;

  /* Theme Colors */
  --primary-color: #ff3737;
  --secondary-color: #66241a;
  --accent-color: #dc2626;
  
  /* Background Colors */
  --background-primary: #0a0a0a;
  --background-secondary: #151515;
  --background-tertiary: #1a1a1a;
  --background-glass: rgba(42, 15, 15, 0.9);
  
  /* Text Colors */
  --text-primary: #fafafa;
  --text-secondary: #b89494;
  --text-muted: #737373;
  --text-accent: #eb2525;
  
  /* Code Colors */
  --code-base: #6ee7b7;
  --code-comment: #47b453;
  --code-keyword: #b0b022;
  --code-string: #f59e0b;
  --code-number: #8b5cf6;
  
  /* Spacing System (8px base) */
  --space-xs: 0.25rem;   /* 4px */
  --space-sm: 0.5rem;    /* 8px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 3rem;     /* 48px */
  --space-3xl: 4rem;     /* 64px */
  --space-4xl: 5rem;     /* 80px */
  --space-5xl: 6rem;     /* 96px */
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-glow: 0 0 20px rgba(235, 37, 37, 0.3);
  
  /* Transitions */
  --transition-fast: 0.15s ease-out;
  --transition-normal: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
  
  /* Z-Index Scale */
  --z-background: -2;
  --z-base: 1;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
  --z-loading: 9999;
  
  /* Typography */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family-mono: 'Fira Code', 'Consolas', 'Monaco', monospace;
  
  /* Line Heights */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
}

/* =============================================================================
   RESET & BASE STYLES
   ============================================================================= */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-sans);
  background-color: var(--background-primary);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
  font-weight: 400;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeSpeed;
}

/* Improved focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Remove default focus outline for mouse users */
:focus:not(:focus-visible) {
  outline: none;
}

/* =============================================================================
   UTILITY CLASSES
   ============================================================================= */

.noselect {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

@media (min-width: 640px) {
  .container {
    padding: 0 var(--space-lg);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-xl);
  }
}

/* =============================================================================
   ANIMATED BACKGROUND EFFECTS
   ============================================================================= */

.ide-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-background);
  opacity: 0.08;
  overflow: hidden;
  pointer-events: none;
  will-change: transform;
}

.code-line {
  font-family: var(--font-family-mono);
  font-size: clamp(0.75rem, 2vw, 1rem);
  color: var(--code-base);
  white-space: pre;
  line-height: var(--leading-normal);
  transform: translateX(100%);
  animation: slideLeft 20s linear infinite;
  text-shadow: 0 0 10px rgba(110, 231, 183, 0.5);
  will-change: transform;
}

.code-line:nth-child(even) {
  animation-duration: 25s;
  animation-delay: -5s;
}

.code-line:nth-child(3n) {
  animation-duration: 18s;
  animation-delay: -10s;
}

.code-line.comment {
  color: var(--code-comment);
  font-style: italic;
  opacity: 0.8;
}

.code-line.keyword {
  color: var(--code-keyword);
  font-weight: 600;
}

.code-line.string {
  color: var(--code-string);
}

.code-line.number {
  color: var(--code-number);
}

@keyframes slideLeft {
  0% {
    transform: translateX(100%);
    opacity: 0;
  }
  10% {
    opacity: 0.8;
  }
  90% {
    opacity: 0.8;
  }
  100% {
    transform: translateX(-100%);
    opacity: 0;
  }
}

/* =============================================================================
   NAVIGATION
   ============================================================================= */

.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  padding: var(--space-sm) var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--background-glass);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  z-index: var(--z-sticky);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  padding: var(--space-xs) var(--space-xl);
  box-shadow: var(--shadow-lg);
}

.nav-logo {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-fill-color: transparent;
  position: relative;
  text-decoration: none;
  transition: all var(--transition-normal);
}

.nav-logo::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-normal);
}

.nav-logo:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-links {
  display: flex;
  gap: var(--space-xl);
  align-items: center;
}

.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  transition: all var(--transition-normal);
  padding: var(--space-sm) 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary-color);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-normal);
}

.nav-links a:hover {
  color: var(--primary-color);
  text-shadow: 0 0 8px rgba(235, 37, 37, 0.5);
  transform: translateY(-1px);
}

.nav-links a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* Mobile Navigation */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }
  
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--background-glass);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .navbar {
    padding: var(--space-md) var(--space-lg);
  }
}

/* =============================================================================
   HERO SECTION
   ============================================================================= */

.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--space-2xl) var(--space-md);
  overflow: hidden;
  isolation: isolate;
}

.hero-background {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 30%, rgba(235, 37, 37, 0.12) 0%, transparent 60%),
    radial-gradient(circle at 80% 70%, rgba(124, 58, 237, 0.12) 0%, transparent 60%),
    radial-gradient(circle at 40% 80%, rgba(34, 197, 94, 0.08) 0%, transparent 50%);
  z-index: -1;
  animation: float 20s ease-in-out infinite alternate;
  will-change: transform;
}

@keyframes float {
  0% {
    transform: translateY(0) translateX(0) rotate(0deg);
  }
  50% {
    transform: translateY(-1%) translateX(1%) rotate(0.5deg);
  }
  100% {
    transform: translateY(-2%) translateX(2%) rotate(1deg);
  }
}


h2 {
  text-align: center;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  margin: var(--space-2xl) auto var(--space-xl);
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: relative;
}

h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  margin: var(--space-md) auto 0;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-full);
  opacity: 0.85;
}


.hero-content {
  text-align: center;
  max-width: min(900px, 90vw);
  position: relative;
  z-index: var(--z-base);
  padding: var(--space-2xl);
  backdrop-filter: blur(2px);
  border-radius: var(--radius-xl);
  background: rgba(0, 0, 0, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.hero-content::before,
.hero-content::after {
  content: '';
  position: absolute;
  font-family: var(--font-family-mono);
  color: var(--code-base);
  opacity: 0.15;
  font-size: 0.75rem;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  background: rgba(0, 0, 0, 0.1);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}

.hero-content::before {
  top: var(--space-sm);
  left: var(--space-sm);
  content: '<hero>';
}

.hero-content::after {
  bottom: var(--space-sm);
  right: var(--space-sm);
  content: '</hero>';
}

.hero-content:hover::before,
.hero-content:hover::after {
  opacity: 0.3;
  background: rgba(0, 0, 0, 0.2);
}

.hero-content h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 800;
  margin-bottom: var(--space-lg);
  background: linear-gradient(
    135deg, 
    var(--primary-color) 0%, 
    var(--secondary-color) 50%,
    var(--primary-color) 100%
  );
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-fill-color: transparent;
  line-height: var(--leading-tight);
  animation: gradientShift 8s ease-in-out infinite, fadeInUp 1s ease-out;
  letter-spacing: -0.02em;
}

@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.hero-content p {
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  line-height: var(--leading-relaxed);
  animation: fadeInUp 1s ease-out 0.3s both;
  font-weight: 400;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-content .cta-buttons {
  animation: fadeInUp 1s ease-out 0.6s both;
}

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

/* =============================================================================
   BUTTONS (INCLUYENDO primary-btn y secondary-btn)
   ============================================================================= */

.btn,
.primary-btn,
.secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition-normal);
  margin: var(--space-sm);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  border: none;
  min-width: 140px;
  will-change: transform;
}

.btn::before,
.primary-btn::before,
.secondary-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left var(--transition-slow);
}

.btn:hover::before,
.primary-btn:hover::before,
.secondary-btn:hover::before {
  left: 100%;
}

.btn:active,
.primary-btn:active,
.secondary-btn:active {
  transform: translateY(1px);
}

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

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

.btn-secondary,
.secondary-btn {
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  background: transparent;
  backdrop-filter: blur(10px);
}

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

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

.about {
  padding: var(--space-5xl) var(--space-md);
  position: relative;
  background: linear-gradient(
    180deg,
    var(--background-primary) 0%,
    var(--background-secondary) 100%
  );
}

.section-title {
  text-align: center;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  margin-bottom: var(--space-2xl);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-fill-color: transparent;
  position: relative;
  letter-spacing: -0.02em;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-full);
}

.about-content {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.about-text p {
  font-size: 1.125rem;
  margin-bottom: var(--space-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.about-text p:last-child {
  margin-bottom: 0;
}
@media (max-width: 768px) {
  .about {
    padding: var(--space-3xl) var(--space-lg);
  }

  .section-title {
    font-size: clamp(1.5rem, 7vw, 2.25rem);
    margin-bottom: var(--space-xl);
    letter-spacing: -0.01em;
    padding: 0 var(--space-sm);
  }

  .section-title::after {
    width: 40px;
    height: 3px;
    bottom: -var(--space-sm);
  }

  .about-content {
    padding: 0 var(--space-md);
    max-width: 95%;
    margin: 0 auto;
  }

  .about-text p {
    font-size: 1rem;
    line-height: 1.6;
    max-width: 90%;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: var(--space-md);
    text-align: left;
  }
}

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

.skills-section {
  margin-top: var(--space-2xl);
}

.skills-section h3 {
  color: var(--text-primary);
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 700;
  margin: var(--space-xl) 0 var(--space-lg);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-fill-color: transparent;
}

.skills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  justify-content: center;
}

.skill {
  background: rgba(235, 37, 37, 0.1);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-full);
  color: var(--primary-color);
  font-weight: 600;
  font-size: 0.9rem;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  border: 1px solid rgba(235, 37, 37, 0.2);
  backdrop-filter: blur(10px);
  cursor: default;
  will-change: transform;
}

.skill::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  transition: left var(--transition-slow);
}

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

.skill:hover {
  transform: translateY(-3px);
  background: rgba(235, 37, 37, 0.2);
  box-shadow: var(--shadow-lg);
  border-color: rgba(235, 37, 37, 0.4);
}

.skill i {
  font-size: 1.1rem;
}

/* =============================================================================
   SOCIAL LINKS
   ============================================================================= */

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

.social-link {
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  transition: all var(--transition-normal);
  position: relative;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-weight: 500;
  will-change: transform;
}

.social-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary-color);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-normal);
}

.social-link:hover {
  color: var(--primary-color);
  transform: translateY(-2px);
  background: rgba(235, 37, 37, 0.1);
}

.social-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

/* =============================================================================
   SECTION DIVIDERS
   ============================================================================= */

.section-divider {
  position: relative;
  width: 100%;
  height: 120px;
  background-color: var(--background-primary);
  overflow: hidden;
}

.section-divider::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 120px;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 1200 120' preserveAspectRatio='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M321.39,56.39C197.94,62.95,75.28,46.24,0,30V120H1200V0C1044.25,26.19,890.69,75.75,739.55,93.26C616.84,107.76,492.09,49.67,321.39,56.39Z' fill='%23151515'/%3E%3C/svg%3E");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  z-index: 2;
}

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

footer {
  background: linear-gradient(135deg, var(--background-primary), var(--background-secondary));
  color: var(--text-primary);
  padding: var(--space-xl) var(--space-lg);
  font-size: 0.9rem;
  border-top: 3px solid rgba(235, 37, 37, 0.3);
  box-shadow: 0 -4px 20px rgba(235, 37, 37, 0.1);
  position: relative;
}

.footer-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  gap: var(--space-lg);
}

.promo-codes {
  display: flex;
  gap: var(--space-md);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary-color);
  background: rgba(235, 37, 37, 0.1);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(235, 37, 37, 0.2);
}

.social-icons {
  display: flex;
  gap: var(--space-lg);
}

.social-icons a {
  color: var(--text-primary);
  font-size: 1.5rem;
  text-decoration: none;
  transition: all var(--transition-normal);
  padding: var(--space-sm);
  border-radius: var(--radius-md);
  will-change: transform;
}

.social-icons a:hover {
  color: var(--primary-color);
  transform: translateY(-2px) scale(1.1);
  background: rgba(235, 37, 37, 0.1);
  box-shadow: var(--shadow-md);
}

/* =============================================================================
   LOADING SCREEN
   ============================================================================= */

#loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--background-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: var(--z-loading);
  transition: opacity var(--transition-slow);
}

#loading-screen img {
  width: 150px;
  height: auto;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 0.5;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
}

#content {
  display: none;
  filter: blur(10px);
  opacity: 0;
}

.blur-effect {
  animation: blurFadeIn 1.5s ease-out forwards;
}

@keyframes blurFadeIn {
  from {
    filter: blur(10px);
    opacity: 0;
  }
  to {
    filter: blur(0px);
    opacity: 1;
  }
}

/* =============================================================================
   SCROLLBAR STYLING
   ============================================================================= */

::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background-color: var(--background-primary);
  border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  border-radius: var(--radius-md);
  border: 3px solid var(--background-primary);
  transition: background var(--transition-normal);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

/* Firefox scrollbar */
html {
  scrollbar-width: thin;
  scrollbar-color: var(--primary-color) var(--background-primary);
}

/* =============================================================================
   INTERACTIVE EFFECTS
   ============================================================================= */

#charCount {
  font-weight: 700;
  transition: color var(--transition-normal), transform var(--transition-fast);
}

.shake {
  animation: shake 0.3s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

.spark {
  position: absolute;
  width: 6px;
  height: 6px;
  background: radial-gradient(circle, #ffd700, #ffed4e);
  border-radius: 50%;
  opacity: 1;
  pointer-events: none;
  animation: sparkAnim 0.8s ease-out;
  box-shadow: 0 0 10px #ffd700;
}

@keyframes sparkAnim {
  0% {
    transform: scale(1) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: scale(0) rotate(180deg);
    opacity: 0;
  }
}

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

@media (max-width: 768px) {
  .hero {
    padding: var(--space-xl) var(--space-md);
  }
  
  .hero-content {
    padding: var(--space-xl);
  }
  
  .about,
  .projects,
  .contact {
    padding: var(--space-3xl) var(--space-md);
  }
  
  .code-line {
    font-size: 0.75rem;
  }
  
  .skills {
    justify-content: center;
  }
  
  .footer-container {
    flex-direction: column;
    text-align: center;
    gap: var(--space-md);
  }
  
  .social-links {
    gap: var(--space-lg);
  }
  
  .btn,
  .primary-btn,
  .secondary-btn {
    min-width: 120px;
    padding: var(--space-sm) var(--space-lg);
  }
}

@media (max-width: 480px) {
  .hero-content {
    padding: var(--space-lg);
  }
  
  .about,
  .projects,
  .contact {
    padding: var(--space-xl) var(--space-sm);
  }
  
  .skills {
    gap: var(--space-sm);
  }
  
  .skill {
    font-size: 0.8rem;
    padding: var(--space-xs) var(--space-md);
  }
  
  .social-links {
    gap: var(--space-md);
  }
  
  .btn,
  .primary-btn,
  .secondary-btn {
    width: 100%;
    margin: var(--space-xs) 0;
  }
}

/* =============================================================================
   DARK MODE SUPPORT & ACCESSIBILITY
   ============================================================================= */

@media (prefers-color-scheme: dark) {
  .hero-background {
    background: 
      radial-gradient(circle at 20% 30%, rgba(235, 37, 37, 0.08) 0%, transparent 60%),
      radial-gradient(circle at 80% 70%, rgba(124, 58, 237, 0.08) 0%, transparent 60%);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .hero-background {
    animation: none;
  }
  
  .code-line {
    animation: none;
    transform: translateX(0);
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --primary-color: #ff0000;
    --secondary-color: #800000;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
  }
  
  .btn,
  .primary-btn,
  .secondary-btn {
    border: 2px solid currentColor;
  }
}

/* =============================================================================
   PRINT STYLES
   ============================================================================= */

@media print {
  .navbar,
  .hero-background,
  .ide-background,
  .loading-screen,
  .btn,
  .primary-btn,
  .secondary-btn,
  .social-links {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
  
  .hero-content h1,
  .section-title {
    color: black !important;
    -webkit-text-fill-color: black !important;
  }
}