/* Core Design System & Theme Custom Properties */
:root {
  /* HSL Tailored Color Palette */
  --bg-dark: hsl(222, 47%, 4%);
  --bg-deep: hsl(222, 47%, 7%);
  --bg-card: hsla(223, 47%, 10%, 0.45);
  --bg-terminal: hsl(222, 50%, 5%);
  
  --text-primary: hsl(210, 40%, 96%);
  --text-secondary: hsl(215, 20%, 70%);
  --text-muted: hsl(215, 15%, 50%);
  
  --neon-cyan: hsl(186, 100%, 45%);
  --neon-cyan-glow: hsla(186, 100%, 45%, 0.15);
  --neon-purple: hsl(271, 91%, 65%);
  --neon-purple-glow: hsla(271, 91%, 65%, 0.15);
  
  --border-color: hsla(217, 30%, 30%, 0.3);
  --border-glow: hsla(186, 100%, 45%, 0.1);
  --border-hover: hsla(271, 91%, 65%, 0.3);

  /* Fonts */
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'Fira Code', 'Courier New', Courier, monospace;
}

/* Theme Variant 1: Hacker Green */
[data-terminal-theme="hacker"] {
  --neon-cyan: hsl(120, 100%, 50%);
  --neon-cyan-glow: hsla(120, 100%, 50%, 0.15);
  --neon-purple: hsl(120, 80%, 60%);
  --neon-purple-glow: hsla(120, 80%, 60%, 0.15);
  --border-glow: hsla(120, 100%, 50%, 0.1);
  --border-hover: hsla(120, 100%, 50%, 0.4);
}

/* Theme Variant 2: Vaporwave / Cyberpunk */
[data-terminal-theme="cyberpunk"] {
  --neon-cyan: hsl(328, 100%, 54%);
  --neon-cyan-glow: hsla(328, 100%, 54%, 0.15);
  --neon-purple: hsl(180, 100%, 50%);
  --neon-purple-glow: hsla(180, 100%, 50%, 0.15);
  --border-glow: hsla(328, 100%, 54%, 0.15);
  --border-hover: hsla(180, 100%, 50%, 0.4);
}

/* Base Reset & Layout Stability */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  scrollbar-gutter: stable; /* Prevent layout shift when scrollbars toggle */
}

body {
  min-block-size: 100dvb;
  overflow-x: hidden;
  position: relative;
  line-height: 1.6;
}

/* Ambient Background Animations */
.ambient-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -2;
  pointer-events: none;
}

.glow-1 {
  inline-size: 500px;
  block-size: 500px;
  background: radial-gradient(circle, var(--neon-cyan-glow) 0%, transparent 70%);
  top: -100px;
  left: -100px;
  animation: pulse-glow 10s infinite alternate ease-in-out;
}

.glow-2 {
  inline-size: 600px;
  block-size: 600px;
  background: radial-gradient(circle, var(--neon-purple-glow) 0%, transparent 70%);
  bottom: -100px;
  right: -100px;
  animation: pulse-glow 12s infinite alternate-reverse ease-in-out;
}

@keyframes pulse-glow {
  0% { transform: scale(1) translate(0, 0); opacity: 0.8; }
  100% { transform: scale(1.2) translate(50px, 30px); opacity: 1; }
}

.grid-overlay {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(to right, hsla(217, 30%, 30%, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, hsla(217, 30%, 30%, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: -1;
  pointer-events: none;
}

/* Typography Utilities */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
}

.highlight {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* Semantic Layout Containers */
.section-container {
  max-inline-size: 1200px;
  margin-inline: auto;
  padding-inline: 1.5rem;
  padding-block: 6rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

/* Glassmorphism Styling System */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

.glass-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 8px 32px 0 var(--border-glow);
}

/* Navigation Bar Styles */
.navbar {
  position: sticky;
  top: 0;
  inline-size: 100%;
  background: hsla(222, 47%, 4%, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-block-end: 1px solid var(--border-color);
  z-index: 100;
  block-size: 70px;
}

.navbar-container {
  max-inline-size: 1200px;
  margin-inline: auto;
  padding-inline: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  block-size: 100%;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
}

.logo-bracket {
  color: var(--neon-cyan);
}

.nav-links {
  display: none;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--neon-cyan);
}

/* Navigation Popover Menu for Mobile */
.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  inline-size: 24px;
  block-size: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 105;
}

.mobile-menu-btn .bar {
  inline-size: 100%;
  block-size: 2px;
  background-color: var(--text-primary);
  transition: 0.3s;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
  .mobile-menu-btn {
    display: none;
  }
}

/* Mobile Popover Style */
.mobile-nav {
  position: fixed;
  inset: 0;
  inline-size: 100dvw;
  block-size: 100dvh;
  background-color: var(--bg-dark);
  border: none;
  padding: 3rem 2rem;
  display: none; /* Hidden by default */
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.mobile-nav.open {
  display: flex; /* Show when open class is added */
}

.mobile-nav-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 2.5rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
}

.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
}

.mobile-nav-links a {
  text-decoration: none;
  color: var(--text-primary);
  font-size: 1.8rem;
  font-weight: 600;
}

.mobile-nav-links a:hover {
  color: var(--neon-purple);
}

/* Hero Section Styles */
.hero-section {
  display: grid;
  place-items: center;
  min-block-size: calc(85dvh - 70px);
  text-align: center;
  position: relative;
}

.hero-badge {
  background: var(--neon-cyan-glow);
  border: 1px solid var(--neon-cyan);
  color: var(--neon-cyan);
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  font-size: 0.85rem;
  font-weight: 500;
  display: inline-block;
  margin-block-end: 1.5rem;
  text-shadow: 0 0 10px var(--neon-cyan-glow);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  margin-block-end: 1.5rem;
  max-inline-size: 900px;
  margin-inline: auto;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  max-inline-size: 750px;
  margin-inline: auto;
  margin-block-end: 2.5rem;
  color: var(--text-secondary);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-block-end: 3.5rem;
}

.seo-tags-list {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.seo-tag-item {
  font-size: 0.75rem;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
}

/* Button UI Components */
.btn {
  padding: 0.8rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-purple));
  color: var(--bg-dark);
  border: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 20px hsla(271, 91%, 65%, 0.4);
}

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

.btn-secondary:hover {
  border-color: var(--neon-cyan);
  background-color: var(--neon-cyan-glow);
}

.btn-full {
  inline-size: 100%;
  text-align: center;
}

/* Section Common Header */
.section-badge {
  text-transform: uppercase;
  color: var(--neon-purple);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 2px;
  margin-block-end: 0.5rem;
}

.section-header {
  text-align: center;
  margin-block-end: 4rem;
}

.section-title {
  font-size: 2.25rem;
  margin-block-end: 1rem;
}

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

/* Cyber-Terminal Styles */
.terminal-section {
  background-color: var(--bg-deep);
  border-block: 1px solid var(--border-color);
}

.terminal-window {
  inline-size: 100%;
  max-inline-size: 850px;
  margin-inline: auto;
  background-color: var(--bg-terminal);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.6);
  overflow: hidden;
  margin-block-end: 2rem;
}

.terminal-titlebar {
  background-color: hsl(222, 50%, 10%);
  border-block-end: 1px solid var(--border-color);
  padding: 0.6rem 1.2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.terminal-dots {
  display: flex;
  gap: 0.5rem;
}

.terminal-dots .dot {
  inline-size: 12px;
  block-size: 12px;
  border-radius: 50%;
  display: inline-block;
}

.dot.red { background-color: #ff5f56; }
.dot.yellow { background-color: #ffbd2e; }
.dot.green { background-color: #27c93f; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.terminal-action-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.terminal-action-btn:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
}

.terminal-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  block-size: 380px;
  overflow-y: auto;
  color: var(--text-secondary);
  display: flex;
  flex-direction: column;
}

.terminal-body::-webkit-scrollbar {
  inline-size: 6px;
}
.terminal-body::-webkit-scrollbar-track {
  background: var(--bg-terminal);
}
.terminal-body::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

.terminal-line {
  margin-block-end: 0.5rem;
  word-break: break-all;
}

.terminal-prompt {
  color: var(--neon-cyan);
  margin-inline-end: 0.5rem;
  font-weight: bold;
}

.terminal-highlight {
  color: var(--neon-purple);
  font-weight: 500;
}

.terminal-prompt-line {
  display: flex;
  align-items: center;
  margin-block-start: auto; /* Pin input prompt line to bottom of scroll */
}

#terminal-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  outline: none;
  caret-color: var(--neon-cyan);
}

.terminal-chips {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.chip {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.2s;
}

.chip:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
  transform: scale(1.05);
}

/* About Section Visuals */
.about-section {
  border-block-end: 1px solid var(--border-color);
}

.about-text {
  font-size: 1.05rem;
  margin-block-end: 1.5rem;
}

.profile-card {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.profile-avatar-container {
  inline-size: 130px;
  block-size: 130px;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 0 25px var(--neon-cyan-glow);
}

.profile-avatar {
  inline-size: 100%;
  block-size: 100%;
}

.profile-meta {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-block-start: 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Work Experience Timeline */
.experience-section {
  background-color: var(--bg-deep);
  border-block-end: 1px solid var(--border-color);
}

.timeline {
  position: relative;
  max-inline-size: 800px;
  margin-inline: auto;
  padding-inline-start: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 0;
  block-size: 100%;
  inline-size: 2px;
  background: linear-gradient(to bottom, var(--neon-cyan), var(--neon-purple));
}

.timeline-item {
  position: relative;
  margin-block-end: 3rem;
}

.timeline-item:last-child {
  margin-block-end: 0;
}

.timeline-dot {
  position: absolute;
  left: -29px;
  top: 24px;
  inline-size: 16px;
  block-size: 16px;
  border-radius: 50%;
  background-color: var(--bg-dark);
  border: 3px solid var(--neon-cyan);
  box-shadow: 0 0 10px var(--neon-cyan-glow);
}

.timeline-item:nth-child(even) .timeline-dot {
  border-color: var(--neon-purple);
  box-shadow: 0 0 10px var(--neon-purple-glow);
}

.timeline-card {
  padding: 1.5rem 2rem;
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-block-end: 1rem;
  border-block-end: 1px solid var(--border-color);
  padding-block-end: 0.75rem;
}

.timeline-role {
  font-size: 1.25rem;
}

.timeline-company {
  color: var(--neon-cyan);
  font-weight: 500;
  font-size: 0.95rem;
}

.timeline-duration {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  background-color: rgba(255,255,255,0.05);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}

.timeline-desc {
  font-size: 0.95rem;
}

/* Skills Expertise Cards */
.skills-section {
  border-block-end: 1px solid var(--border-color);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.skill-category-card h3 {
  font-size: 1.25rem;
  margin-block-end: 1.5rem;
  border-block-end: 1px solid var(--border-color);
  padding-block-end: 0.5rem;
  color: var(--neon-cyan);
}

.skill-category-card:nth-child(even) h3 {
  color: var(--neon-purple);
}

.skills-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.skill-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  font-weight: 500;
  margin-block-end: 0.4rem;
}

.skill-progress-bg {
  inline-size: 100%;
  block-size: 6px;
  background-color: rgba(255,255,255,0.07);
  border-radius: 3px;
  overflow: hidden;
}

.skill-progress-bar {
  block-size: 100%;
  background: linear-gradient(to right, var(--neon-cyan), var(--neon-purple));
  inline-size: var(--level);
  border-radius: 3px;
  box-shadow: 0 0 10px var(--neon-cyan-glow);
}

/* Contact Grid & Form Styles */
.contact-section {
  background-color: var(--bg-deep);
  border-block-end: 1px solid var(--border-color);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 0.8fr 1.2fr;
  }
}

.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.info-card {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.info-icon {
  font-size: 1.75rem;
}

.info-content h4 {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

.contact-link {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.contact-link:hover {
  color: var(--neon-cyan);
}

/* WhatsApp Direct Button Styling */
.whatsapp-card-link {
  text-decoration: none;
  display: block;
  background: linear-gradient(135deg, hsla(142, 70%, 15%, 0.3), var(--bg-card));
  border-color: hsla(142, 70%, 40%, 0.3);
}

.whatsapp-card-link:hover {
  border-color: #00E676;
  box-shadow: 0 0 15px rgba(0, 230, 118, 0.15);
}

.whatsapp-card-content {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.whatsapp-icon-wrapper {
  inline-size: 44px;
  block-size: 44px;
}

.whatsapp-logo {
  inline-size: 100%;
  block-size: 100%;
}

.whatsapp-text h4 {
  color: #00E676;
  font-size: 1.1rem;
}

.whatsapp-text p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Contact Form controls styling */
.contact-form-wrapper fieldset {
  border: none;
}

.contact-form-wrapper legend {
  font-size: 1.5rem;
  font-weight: 600;
  margin-block-end: 1.5rem;
}

.form-group {
  margin-block-end: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-block-end: 0.5rem;
}

.form-group input,
.form-group textarea {
  inline-size: 100%;
  background-color: rgba(255,255,255,0.03);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.8rem 1.2rem;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  outline: none;
  transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--neon-cyan);
  background-color: rgba(255,255,255,0.06);
  box-shadow: 0 0 10px var(--neon-cyan-glow);
}

.form-status {
  margin-block-start: 1rem;
  font-size: 0.9rem;
  font-family: var(--font-mono);
}

.form-status.success {
  color: #27c93f;
}

.form-status.error {
  color: #ff5f56;
}

/* Footer Section */
.footer {
  background-color: var(--bg-dark);
  border-block-start: 1px solid var(--border-color);
  padding-block-start: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  margin-block-end: 3rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer-brand .logo {
  margin-block-end: 1rem;
}

.footer-brand p {
  font-size: 0.9rem;
  max-inline-size: 400px;
}

.footer-links h4,
.footer-socials h4 {
  font-size: 1rem;
  margin-block-end: 1.2rem;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links ul,
.footer-socials ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a,
.footer-socials a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color 0.2s;
}

.footer-links a:hover,
.footer-socials a:hover {
  color: var(--neon-cyan);
}

.footer-bottom {
  border-block-start: 1px solid var(--border-color);
  padding-block: 2rem;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}