:root {
  /* Light Mode */
  --bg-color: #faf9f6; 
  --surface-color: #ffffff;
  --text-primary: #09090b; 
  --text-secondary: #3f3f46; 
  --border-color: #d4d4d8; 
  --accent-color: #18181b;
  --accent-text: #ffffff;
  --glass-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
  --terminal-accent: #27272a;
  --terminal-accent-bg: #e4e4e7;
  --font-sans: 'Geist', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-headings: 'Instrument Serif', serif;
  --font-mono: 'JetBrains Mono', "SF Mono", monospace;
}

[data-theme="dark"] {
  /* Dark Mode - Zinc */
  --bg-color: #09090b;
  --surface-color: #18181b;
  --text-primary: #f4f4f5;
  --text-secondary: #a1a1aa;
  --border-color: #27272a;
  --accent-color: #ffffff;
  --accent-text: #000000;
  --glass-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
  --terminal-accent: #e4e4e7;
  --terminal-accent-bg: #27272a;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Lenis Scroll Rules */
html.lenis, html.lenis body {
  height: auto;
}
.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}
.lenis.lenis-smooth [data-lenis-prevent] {
  overscroll-behavior: contain;
}
.lenis.lenis-stopped {
  overflow: hidden;
}
.lenis.lenis-smooth iframe {
  pointer-events: none;
}

.font-mono {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.font-sans {
  font-family: var(--font-sans);
  font-size: 1.05rem;
}

/* Layout */
.container {
  max-width: 720px; 
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border-color); 
}

section:last-child {
  border-bottom: none;
}

.pt-0 {
  padding-top: 0 !important;
}

/* Typography */
h1, h2, h3 {
  font-family: var(--font-headings);
  font-weight: 400; /* Instrument Serif is highly stylized at 400 */
}

h1 {
  font-size: 3.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

h2 {
  font-size: 2.2rem;
  margin-bottom: 24px;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

p {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.7;
}

.glass-card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 0;
  padding: 24px;
  box-shadow: var(--glass-shadow);
  transition: border-color 0.3s ease;
}

.glass-card:hover {
  border-color: var(--text-secondary);
}

.glass-card p {
    margin-bottom: 12px;
}
.glass-card p:last-child {
    margin-bottom: 0;
}

/* Terminal Hero */
.hero-terminal {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  padding-top: 140px;
  padding-bottom: 72px;
  width: 100%;
}

.terminal-line {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.prompt {
  color: var(--text-primary);
  font-weight: bold;
}

.about-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
}


/* Typewriter Animation */
.typewriter {
  overflow: hidden;
  white-space: nowrap;
  border-right: 0.15em solid var(--text-primary);
  display: inline-block;
  width: 24ch; /* "Embedded Linux Developer" is 24 chars */
  animation: 
    typing 1.5s steps(24, end) forwards,
    blink-caret 0.8s step-end infinite;
}

@keyframes typing {
  from { width: 0; }
  to { width: 24ch; }
}

@keyframes blink-caret {
  from, to { border-color: transparent; }
  50% { border-color: var(--text-primary); }
}

.terminal-title {
  font-family: var(--font-headings);
  font-size: clamp(3.5rem, 8vw, 5.5rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.terminal-accent-text {
  color: var(--text-secondary); 
}

.terminal-block {
  margin-top: 24px;
  margin-bottom: 32px;
  border-left: 2px solid var(--border-color);
  padding-left: 20px;
}

.terminal-comment {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  color: var(--text-primary);
  margin-bottom: 12px;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  opacity: 0.9;
}

.tata-link {
  display: flex;
  align-items: center;
  color: inherit;
  text-decoration: underline;
  text-decoration-style: dashed;
  text-underline-offset: 4px;
  transition: opacity 0.2s;
}

.tata-link:hover {
  opacity: 0.7;
}

.tata-logo {
  height: 0.9em;
  filter: brightness(0); /* Make black in light mode */
  opacity: 0.7;
}

[data-theme="dark"] .tata-logo {
  filter: brightness(0) invert(1); /* Make white in dark mode */
  opacity: 0.85;
}

.terminal-text {
  color: var(--text-primary);
  line-height: 1.6;
  max-width: 600px;
  font-size: 0.95rem;
  margin-bottom: 0;
}

.terminal-actions-wrapper {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.terminal-actions-primary {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.terminal-actions-social {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 600px) {
  .terminal-actions-wrapper {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
}

.terminal-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 42px;
  padding: 0 16px;
  border: 1px solid var(--border-color);
  border-radius: 0; 
  background: var(--surface-color);
  color: var(--text-secondary);
  transition: all 0.2s ease;
  font-family: var(--font-headings);
  font-size: 1.15rem;
}

.terminal-btn svg {
  width: 14px;
  height: 14px;
}

.terminal-btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-color);
  border-radius: 0;
  background: var(--surface-color);
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.terminal-btn-icon svg {
  width: 16px;
  height: 16px;
}

.terminal-btn:hover, .terminal-btn-icon:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
  background-color: var(--bg-color);
}

.terminal-btn.active {
  background-color: var(--text-primary);
  color: var(--bg-color);
  border-color: var(--text-primary);
}

.terminal-btn.active:hover {
  background-color: var(--text-primary);
  color: var(--bg-color);
  opacity: 0.9;
}

/* Skill Icons (Shared between Pill and Terminal designs) */
.skill-icon, .skill-icon svg {
  width: 20px;
  height: 20px;
  opacity: 0.7;
}
[data-theme="dark"] img.skill-icon {
  filter: invert(1);
}

/* Terminal Window for Skills */
.terminal-window {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--glass-shadow);
}

.terminal-header {
  background-color: var(--border-color); 
  padding: 12px 16px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

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

.terminal-body {
  padding: 24px;
}

.terminal-command {
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.terminal-output {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}

.terminal-file {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-primary);
  padding: 8px;
  border-radius: 0;
  transition: background-color 0.2s;
}

.terminal-file:hover {
  background-color: var(--border-color);
}

/* Skills Pills */
.skills-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.skill-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border: 1px dashed var(--border-color);
  border-radius: 0;
  background-color: var(--surface-color);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s;
}

.skill-pill:hover {
  border-color: var(--text-primary);
  border-style: solid;
}


/* Footer Social Icon image */
.social-icon-img {
  width: 14px;
  height: 14px;
  opacity: 0.8;
  display: inline-block;
}

.terminal-btn .social-icon-img {
  width: 14px;
  height: 14px;
}

.terminal-btn-icon .social-icon-img {
  width: 16px;
  height: 16px;
}

[data-theme="dark"] img.social-icon-img {
  filter: invert(1);
}

/* Experience Timeline */
.timeline {
  position: relative;
  padding-left: 24px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 0;
  width: 1px;
  background-color: var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}

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

.timeline-item::before {
  content: '';
  position: absolute;
  left: -22px;
  top: 8px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--border-color);
  box-shadow: 0 0 0 4px var(--bg-color);
}

.timeline-role {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.timeline-company {
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.timeline-item p {
    font-size: 0.95rem;
}

/* Contact Form */
.contact-header {
  margin-bottom: 32px;
}

.contact-title {
  font-size: clamp(2.8rem, 6vw, 4rem);
  text-align: left;
  line-height: 1.1;
  margin-bottom: 16px;
}

.contact-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  line-height: 1.6;
}

.contact-card {
  max-width: 100%;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

@media (min-width: 600px) {
  .form-row {
    flex-direction: row;
  }
  .form-row > .form-group {
    flex: 1;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-weight: 500;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.form-control {
  width: 100%;
  background-color: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 12px 16px;
  border-radius: 0;
  outline: none;
  transition: border-color 0.3s ease-out, box-shadow 0.3s ease-out;
  font-size: 0.95rem;
  font-family: var(--font-sans);
}

textarea.form-control {
  resize: none;
}

.form-control:focus {
  border-color: var(--text-primary);
  box-shadow: 0 0 10px 0 rgba(128, 128, 128, 0.15), 0 0 0 1px var(--text-primary);
}

.form-control::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

.form-submit-btn {
  justify-content: center;
  padding: 12px 24px;
  font-size: 1.4rem;
  margin-top: 8px;
  position: relative;
  overflow: hidden;
  font-family: var(--font-headings);
}

.form-submit-btn > * {
  position: relative;
  z-index: 1;
}

.form-submit-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background-color: rgba(128, 128, 128, 0.4);
  transition: width 0s ease;
  z-index: 0;
}

.form-submit-btn:hover::before {
  width: 100%;
  transition: width 1.5s ease-in-out;
}

.form-submit-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.form-result {
  margin-top: 16px;
  font-size: 0.95rem;
  font-weight: 500;
  text-align: center;
}
.form-result.success {
  color: #27c93f;
}
.form-result.error {
  color: #ff5f56;
}

/* Links Section */
.links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.link-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  text-decoration: none;
  color: var(--text-primary);
  border-radius: 0;
  transition: all 0.2s ease;
}

.link-card:hover {
  background-color: var(--border-color);
  transform: translateY(-2px);
}

.link-card-icon {
  width: 24px;
  height: 24px;
  opacity: 0.8;
}

[data-theme="dark"] .link-card-icon {
  filter: invert(1);
}

.link-card-name {
  font-weight: 500;
  font-family: var(--font-sans);
  flex: 1;
}

.link-card-arrow {
  width: 16px;
  height: 16px;
  opacity: 0.5;
  transition: transform 0.2s;
}

.link-card:hover .link-card-arrow {
  transform: translate(2px, -2px);
  opacity: 1;
}


/* Footer Section */
.site-footer {
  background-color: var(--surface-color);
  border-top: 1px solid var(--border-color);
  padding: 60px 24px;
  margin-top: 40px;
}

.footer-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

@media (min-width: 768px) {
  .footer-container {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-left {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 40px;
}

.footer-profile {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}

.footer-name {
  font-family: var(--font-headings);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

.footer-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.footer-copyright p {
    margin-bottom: 4px;
    font-size: 0.85rem;
}

.footer-right {
  display: flex;
  gap: 60px;
  flex-wrap: wrap;
}

.footer-heading {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--text-primary);
  display: inline-block;
  padding-bottom: 4px;
}

.footer-links {
  display: flex;
  gap: 16px;
  font-size: 0.9rem;
}

.footer-links a {
  font-weight: 500;
}

.footer-socials {
  display: flex;
  gap: 12px;
}

.contact-action-item {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 0;
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
  transition: all 0.2s;
}

.footer-social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
  transition: all 0.2s;
  color: var(--text-primary);
}

.footer-social-btn:hover {
  border-color: var(--text-primary);
  transform: translateY(-2px);
}

.footer-social-btn svg, .footer-social-btn img {
  width: 18px;
  height: 18px;
}


/* Theme Toggle */
.theme-toggle {
  position: fixed;
  top: 24px;
  right: 24px;
  width: 40px;
  height: 40px;
  border-radius: 0;
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 100;
  color: var(--text-primary);
  transition: all 0.2s;
}

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

/* Scroll Animations */
.reveal {
  opacity: 0;
  transform: translateY(15px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}