/* ===================================
   Cybersecurity Dark Theme Portfolio
   =================================== */

:root {
  /* Dark Cyber Colors */
  --color-bg-primary: #0a0e27;
  --color-bg-secondary: #111827;
  --color-bg-card: #1a1f3a;
  --color-bg-elevated: #242b4a;

  /* Neon/Cyber Accents */
  --color-primary: #00d9ff;
  --color-primary-glow: rgba(0, 217, 255, 0.5);
  --color-secondary: #00ff88;
  --color-accent: #ff0080;
  --color-warning: #ffaa00;

  /* Text Colors */
  --color-text-primary: #e5e7eb;
  --color-text-secondary: #9ca3af;
  --color-text-muted: #6b7280;
  --color-text-heading: #ffffff;

  /* Borders & Dividers */
  --color-border: rgba(0, 217, 255, 0.2);
  --color-border-glow: rgba(0, 217, 255, 0.6);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Typography */
  --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Rajdhani', 'Orbitron', sans-serif;
  --font-mono: 'Fira Code', 'Courier New', monospace;

  --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: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;

  /* Effects */
  --border-radius: 0;
  --border-radius-sm: 2px;
  --border-radius-md: 4px;
  --border-radius-lg: 8px;

  --shadow-neon: 0 0 20px var(--color-primary-glow);
  --shadow-neon-strong: 0 0 30px var(--color-primary-glow), 0 0 60px var(--color-primary-glow);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.5);

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================
   Reset & Base
   =================================== */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
  width: 100%;
  position: relative;
}

body {
  font-family: var(--font-primary);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
  width: 100%;
  max-width: 100vw;
}

/* Animated background grid */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(0, 217, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 217, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: -1;
  animation: gridScroll 20s linear infinite;
}

@keyframes gridScroll {
  0% {
    transform: translateY(0);
  }

  100% {
    transform: translateY(50px);
  }
}


/* ===================================
   Typography
   =================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-heading);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

h1 {
  font-size: var(--font-size-5xl);
  color: var(--color-primary);
  text-shadow: 0 0 20px var(--color-primary-glow);
  position: relative;
}

h1::after {
  content: '_';
  animation: blink 1s infinite;
  color: var(--color-primary);
}

@keyframes blink {

  0%,
  49% {
    opacity: 1;
  }

  50%,
  100% {
    opacity: 0;
  }
}

h2 {
  font-size: var(--font-size-4xl);
  color: var(--color-text-heading);
}

h3 {
  font-size: var(--font-size-3xl);
  color: var(--color-primary);
  position: relative;
  display: inline-block;
}

h3::before {
  content: '> ';
  color: var(--color-secondary);
}

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

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
}

a:hover {
  color: var(--color-secondary);
  text-shadow: 0 0 10px var(--color-primary-glow);
}

/* ===================================
   Navigation
   =================================== */

.custom-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 39, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--color-border);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
  padding: var(--spacing-sm) 0;
}

.custom-nav::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg,
      transparent,
      var(--color-primary),
      var(--color-secondary),
      transparent);
  animation: borderGlow 3s linear infinite;
}

@keyframes borderGlow {

  0%,
  100% {
    opacity: 0.5;
  }

  50% {
    opacity: 1;
  }
}

.nav-link {
  color: var(--color-text-secondary);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-md);
  margin: 0 var(--spacing-xs);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  position: relative;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-link::before {
  content: '[';
  opacity: 0;
  margin-right: 4px;
  transition: opacity var(--transition-fast);
}

.nav-link::after {
  content: ']';
  opacity: 0;
  margin-left: 4px;
  transition: opacity var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
  border-color: var(--color-border-glow);
  background: rgba(0, 217, 255, 0.05);
  box-shadow: 0 0 15px rgba(0, 217, 255, 0.2);
}

.nav-link:hover::before,
.nav-link:hover::after,
.nav-link.active::before,
.nav-link.active::after {
  opacity: 1;
}

/* Hamburger Menu Button - FIXED POSITION */
.nav-toggle {
  display: none;
  position: fixed !important;
  inset: 1rem 1.5rem auto auto !important;
  left: auto !important;
  bottom: auto !important;
  z-index: 10000 !important;
  background: var(--color-bg-card);
  border: 2px solid var(--color-primary);
  width: 50px !important;
  height: 50px !important;
  min-width: 50px !important;
  max-width: 50px !important;
  min-height: 50px !important;
  max-height: 50px !important;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
  padding: 0 !important;
  margin: 0 !important;
  transform: translate(0, 0) !important;
  transition: none !important;
  animation: none !important;
  contain: layout style paint;
}

.nav-toggle:hover {
  background: var(--color-primary);
  box-shadow: var(--shadow-neon-strong);
  transform: translate(0, 0) !important;
  animation: none !important;
  inset: 1rem 1.5rem auto auto !important;
}

.nav-toggle:active {
  transform: translate(0, 0) !important;
  inset: 1rem 1.5rem auto auto !important;
}

.nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--color-primary);
  transition: all var(--transition-base);
}

.nav-toggle:hover span {
  background: var(--color-bg-primary);
}

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

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

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

/* Mobile Responsive Nav */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex !important;
    position: fixed !important;
    inset: 1rem 1.5rem auto auto !important;
    left: auto !important;
    bottom: auto !important;
    transform: translate(0, 0) !important;
    transition: none !important;
    animation: none !important;
    contain: layout style paint !important;
  }

  .nav-toggle:hover,
  .nav-toggle:active,
  .nav-toggle.active {
    position: fixed !important;
    inset: 1rem 1.5rem auto auto !important;
    transform: translate(0, 0) !important;
    animation: none !important;
  }

  .custom-nav {
    transform: translateY(-100%);
    padding: var(--spacing-xl) var(--spacing-md);
    transition: transform var(--transition-base);
  }

  .custom-nav.nav-open {
    transform: translateY(0);
  }

  .custom-nav ul {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
  }

  .nav-link {
    font-size: var(--font-size-base);
    padding: var(--spacing-sm) var(--spacing-lg);
    margin: 0;
    width: 100%;
    max-width: 300px;
    text-align: center;
    display: block;
  }
}

@media (min-width: 769px) {
  .nav-toggle {
    display: none !important;
    position: fixed !important;
    transform: translate(0, 0) !important;
  }
}


/* ===================================
   Container & Layout
   =================================== */

.container {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

main {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding-top: 100px;
  position: relative;
}

/* Match index.html: main padding (100px) + intro padding-top (3rem/48px) = 148px */
main.intro {
  padding-top: 148px;
}

/* ===================================
   Hero/Intro Section
   =================================== */

.intro {
  text-align: center;
  padding: var(--spacing-xl) 0;
  position: relative;
  border-bottom: 1px solid var(--color-border);
}

/* Glowing orb background */
.intro::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle,
      rgba(0, 217, 255, 0.1) 0%,
      transparent 70%);
  border-radius: 50%;
  animation: pulse 4s ease-in-out infinite;
  z-index: -1;
}

@keyframes pulse {

  0%,
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.5;
  }

  50% {
    transform: translate(-50%, -50%) scale(1.1);
    opacity: 0.8;
  }
}

.profile-circle {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  margin: 0 auto var(--spacing-lg);
  object-fit: cover;
  display: block;
  border: 3px solid var(--color-primary);
  box-shadow:
    0 0 30px var(--color-primary-glow),
    inset 0 0 20px rgba(0, 217, 255, 0.2);
  transition: all var(--transition-base);
  position: relative;
  z-index: 1;
}

.profile-circle:hover {
  transform: scale(1.05);
  border-color: var(--color-secondary);
  box-shadow:
    0 0 50px var(--color-primary-glow),
    0 0 80px rgba(0, 255, 136, 0.3),
    inset 0 0 30px rgba(0, 217, 255, 0.3);
}

.intro h1 {
  margin-bottom: var(--spacing-sm);
  animation: fadeInUp 0.8s ease-out;
}

.intro h2 {
  font-size: var(--font-size-2xl);
  color: var(--color-text-secondary);
  font-weight: 400;
  text-transform: none;
  letter-spacing: normal;
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-primary);
  animation: fadeInUp 1s ease-out;
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.available {
  color: var(--color-secondary);
  font-weight: 600;
  font-family: var(--font-mono);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-base);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.available::before {
  content: '●';
  color: var(--color-secondary);
  animation: pulseGreen 2s ease-in-out infinite;
  filter: drop-shadow(0 0 5px var(--color-secondary));
}

@keyframes pulseGreen {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.3;
  }
}

.action-buttons {
  margin: var(--spacing-sm) 0;
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
}

.social-img {
  width: 70px;
  height: 70px;
  padding: 16px;
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  transition: all var(--transition-base);
  filter: brightness(0.8);
}

.social-img:hover {
  transform: translateY(-5px);
  border-color: var(--color-primary);
  background: var(--color-bg-elevated);
  box-shadow: var(--shadow-neon);
  filter: brightness(1.2);
}

.cv-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.cv-icon i {
  font-size: 36px;
  color: var(--color-primary);
  transition: all var(--transition-fast);
}

.cv-icon:hover i {
  color: var(--color-secondary);
  transform: scale(1.1);
}

.location {
  color: var(--color-text-muted);
  font-size: var(--font-size-base);
  margin-top: var(--spacing-xs);
  font-family: var(--font-mono);
}

/* ===================================
   Sections
   =================================== */

section {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  scroll-margin-top: 120px;
}

/* Corner brackets */
section::before,
section::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-primary);
  transition: all var(--transition-base);
  opacity: 0;
}

section::before {
  top: 10px;
  left: 10px;
  border-right: none;
  border-bottom: none;
}

section::after {
  bottom: 10px;
  right: 10px;
  border-left: none;
  border-top: none;
}

section:hover::before,
section:hover::after {
  opacity: 1;
  box-shadow: 0 0 10px var(--color-primary-glow);
}

section:hover {
  border-color: var(--color-border-glow);
  background: var(--color-bg-elevated);
  box-shadow:
    var(--shadow-card),
    0 0 30px rgba(0, 217, 255, 0.1);
}

/* Side accent line */
section>* {
  position: relative;
  z-index: 1;
}

/* ===================================
   Professional Profile & Experience
   =================================== */

.professional-profile,
.work-experience {
  text-align: left;
}

.professional-profile p,
.work-experience p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.8;
}

.work-experience article {
  margin-bottom: var(--spacing-lg);
  padding-left: var(--spacing-md);
  border-left: 2px solid var(--color-border);
  transition: border-color var(--transition-fast);
}

.work-experience article:hover {
  border-left-color: var(--color-primary);
}

.work-experience h4 {
  color: var(--color-primary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
  text-transform: none;
}

.work-experience li {
  color: var(--color-text-primary);
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
  margin-left: var(--spacing-lg);
  position: relative;
  list-style: none;
}

.work-experience li::before {
  content: '▸';
  position: absolute;
  left: -20px;
  color: var(--color-primary);
  font-weight: bold;
}

/* ===================================
   Cards
   =================================== */

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all var(--transition-base);
  width: 100%;
  max-width: 22rem;
  margin: var(--spacing-md) auto;
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg,
      transparent,
      var(--color-primary),
      transparent);
  transition: left var(--transition-slow);
}

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

.card:hover {
  border-color: var(--color-primary);
  transform: translateY(-10px);
  box-shadow:
    var(--shadow-card),
    0 0 20px rgba(0, 217, 255, 0.2);
}

.card-header {
  background: var(--color-bg-secondary);
  color: var(--color-primary);
  padding: var(--spacing-md);
  font-weight: 600;
  font-family: var(--font-mono);
  border-bottom: 1px solid var(--color-border);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card-body {
  padding: var(--spacing-md);
}

.card-text {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.card-img-top {
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: all var(--transition-base);
  filter: brightness(0.9);
}

.card:hover .card-img-top {
  filter: brightness(1.1);
  transform: scale(1.05);
}

/* ===================================
   Projects & Certifications
   =================================== */

.projects,
.certifications {
  text-align: left;
}

.section-img {
  width: 200px;
  height: auto;
  margin: var(--spacing-sm);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  border: 2px solid var(--color-border);
  filter: brightness(0.9);
  position: relative;
}

.section-img:hover {
  transform: translateY(-10px);
  border-color: var(--color-primary);
  box-shadow:
    var(--shadow-card),
    var(--shadow-neon);
  filter: brightness(1.1);
}

/* ===================================
   Posts Section
   =================================== */

.post {
  text-align: left;
}

.section-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  justify-content: center;
  margin-top: var(--spacing-xl);
}

/* How to Use - Horizontal Steps (No Card) */
.post .usage-guide {
  margin: var(--spacing-xl) 0 var(--spacing-3xl);
  padding: 0;
}

.post .usage-guide h4 {
  color: var(--color-secondary);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xl);
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-weight: 600;
}

.post .usage-steps {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0;
  display: flex;
  gap: var(--spacing-lg);
  position: relative;
  justify-content: center;
  flex-wrap: wrap;
}

.post .usage-steps::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 20px;
  height: 2px;
  background: linear-gradient(90deg,
      transparent 0%,
      var(--color-primary) 20%,
      var(--color-secondary) 80%,
      transparent 100%);
  z-index: 0;
}

.post .usage-steps li {
  counter-increment: step;
  position: relative;
  flex: 1;
  min-width: 200px;
  max-width: 250px;
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin: 0;
}

.post .usage-steps li::before {
  content: counter(step);
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 42px;
  height: 42px;
  background: var(--color-bg-card);
  color: var(--color-primary);
  border: 3px solid var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-lg);
  font-family: var(--font-mono);
  box-shadow: 0 0 0 4px var(--color-bg-primary), 0 0 20px rgba(0, 217, 255, 0.3);
  z-index: 2;
  transition: all var(--transition-fast);
}

.post .usage-steps li:hover::before {
  background: var(--color-primary);
  color: var(--color-bg-primary);
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 4px var(--color-bg-primary), 0 0 30px var(--color-secondary);
  transform: translateX(-50%) scale(1.15);
}

.post .usage-steps code {
  display: block;
  background: var(--color-bg-secondary);
  color: var(--color-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-secondary);
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  margin-top: var(--spacing-sm);
  overflow-x: auto;
  text-align: left;
  transition: all var(--transition-fast);
}

.post .usage-steps li:hover code {
  background: var(--color-bg-card);
  border-left-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Responsive - Vertical on Mobile */
@media (max-width: 768px) {
  .post .usage-steps {
    flex-direction: column;
    gap: var(--spacing-xl);
  }

  .post .usage-steps::before {
    left: 20px;
    right: auto;
    top: 0;
    bottom: 0;
    width: 2px;
    height: auto;
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  }

  .post .usage-steps li {
    text-align: left;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 60px;
    max-width: 100%;
  }

  .post .usage-steps li::before {
    left: 4px;
    top: var(--spacing-md);
    transform: none;
    width: 36px;
    height: 36px;
    font-size: var(--font-size-base);
  }

  .post .usage-steps li:hover::before {
    transform: scale(1.15);
  }
}

/* ===================================
   Skills Section
   =================================== */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.skill-category {
  background: var(--color-bg-secondary);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  position: relative;
}

.skill-category::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--color-primary);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-base);
}

.skill-category:hover::before {
  transform: scaleY(1);
}

.skill-category:hover {
  border-color: var(--color-primary);
  background: var(--color-bg-elevated);
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.1);
}

.skill-category h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-lg);
  font-family: var(--font-mono);
}

.skill-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--color-bg-card);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  margin: var(--spacing-xs);
  font-size: var(--font-size-sm);
  font-weight: 500;
  font-family: var(--font-mono);
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.skill-badge:hover {
  background: var(--color-primary);
  color: var(--color-bg-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 15px var(--color-primary-glow);
  transform: translateY(-2px);
}

/* ===================================
   Contact Form
   =================================== */

.contact-form {
  max-width: 600px;
  margin: var(--spacing-xl) auto;
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  color: var(--color-primary);
  font-weight: 600;
  font-family: var(--font-mono);
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--font-size-sm);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
  min-height: 150px;
  resize: vertical;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-bg-elevated);
  box-shadow:
    0 0 0 1px var(--color-primary),
    0 0 20px rgba(0, 217, 255, 0.2);
}

.btn {
  padding: var(--spacing-md) var(--spacing-xl);
  border: 2px solid var(--color-primary);
  background: transparent;
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-base);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--color-primary);
  transition: left var(--transition-base);
  z-index: -1;
}

.btn:hover::before {
  left: 0;
}

.btn:hover {
  color: var(--color-bg-primary);
  box-shadow: var(--shadow-neon);
}

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

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

/* ===================================
   Footer
   =================================== */

footer {
  background: var(--color-bg-secondary);
  color: var(--color-text-muted);
  text-align: center;
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-3xl);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

footer::before {
  content: '';
  display: block;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg,
      transparent,
      var(--color-primary),
      transparent);
  margin-bottom: var(--spacing-md);
}

/* ===================================
   Utility Classes
   =================================== */

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

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
  }

  .profile-circle {
    width: 150px;
    height: 150px;
  }

  section {
    padding: var(--spacing-lg);
  }

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

  .row {
    flex-direction: column;
  }

  .action-buttons {
    gap: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  main {
    width: 95%;
  }

  .section-img {
    width: 150px;
  }

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

/* ===================================
   Accessibility
   =================================== */

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

/* ===================================
   Custom Scrollbar
   =================================== */

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

::-webkit-scrollbar-track {
  background: var(--color-bg-primary);
  border-left: 1px solid var(--color-border);
}

::-webkit-scrollbar-thumb {
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-neon);
}

/* ===================================
   Print Styles
   =================================== */

@media print {

  body::before,
  body::after,
  .custom-nav,
  .action-buttons {
    display: none;
  }

  section {
    box-shadow: none;
    page-break-inside: avoid;
    border: 1px solid #000;
  }

  * {
    color: #000 !important;
    background: #fff !important;
  }
}