/* ========================================================================
   NEURAL FRONTIER — Design Tokens & Styles
   Portfolio for Utsav Paudel, ML Engineer
   ======================================================================== */

:root {
  /* Type Scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Fonts */
  --font-display: 'Clash Display', 'Arial Black', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Easing */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
}

/* ---- DARK MODE (default) ---- */
:root, [data-theme="dark"] {
  --color-bg: #06080d;
  --color-surface: #0d1017;
  --color-surface-2: #13161e;
  --color-surface-3: #1a1e28;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text: #e4e4e7;
  --color-text-muted: #71717a;
  --color-text-faint: #3f3f46;
  --color-primary: #00d4ff;
  --color-primary-dim: rgba(0, 212, 255, 0.15);
  --color-accent: #f59e0b;
  --color-accent-dim: rgba(245, 158, 11, 0.12);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.6);
}

/* ---- LIGHT MODE ---- */
[data-theme="light"] {
  --color-bg: #f7f7f8;
  --color-surface: #ffffff;
  --color-surface-2: #f0f0f2;
  --color-surface-3: #e4e4e7;
  --color-border: rgba(0, 0, 0, 0.1);
  --color-text: #18181b;
  --color-text-muted: #52525b;
  --color-text-faint: #a1a1aa;
  --color-primary: #0891b2;
  --color-primary-dim: rgba(8, 145, 178, 0.1);
  --color-accent: #d97706;
  --color-accent-dim: rgba(217, 119, 6, 0.1);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
}

/* ========================================================================
   GLOBAL ELEMENTS
   ======================================================================== */

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  z-index: 1000;
  transition: none;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: transparent;
  transition: background 0.4s ease, backdrop-filter 0.4s ease;
}

.nav.scrolled {
  background: rgba(6, 8, 13, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
}

[data-theme="light"] .nav.scrolled {
  background: rgba(247, 247, 248, 0.85);
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: var(--space-6);
  align-items: center;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width 0.3s var(--ease-out);
}

.nav-links a:hover { color: var(--color-text); }
.nav-links a:hover::after { width: 100%; }

.theme-toggle {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
}

/* Mobile nav */
.nav-hamburger {
  display: none;
  width: 44px;
  height: 44px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  z-index: 200;
}
.nav-hamburger span {
  width: 20px;
  height: 1.5px;
  background: var(--color-text);
  transition: all 0.3s var(--ease-out);
  display: block;
}
.nav-hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; }
.nav-hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 150;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s var(--ease-out);
}
.mobile-menu.open { opacity: 1; pointer-events: all; }
.mobile-menu a {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

/* ========================================================================
   HERO
   ======================================================================== */
.hero {
  position: relative;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  overflow: hidden;
}

#neural-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  filter: blur(1.5px);
  opacity: 0.45;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.hero-portrait {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-primary);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.2), 0 0 60px rgba(0, 212, 255, 0.1);
  object-fit: cover;
  animation: pulse-glow 3s ease-in-out infinite alternate;
}

@keyframes pulse-glow {
  from { box-shadow: 0 0 20px rgba(0, 212, 255, 0.15), 0 0 40px rgba(0, 212, 255, 0.05); }
  to   { box-shadow: 0 0 30px rgba(0, 212, 255, 0.3), 0 0 60px rgba(0, 212, 255, 0.15); }
}

.hero-name {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
  letter-spacing: -0.02em;
}

.hero-name .char {
  display: inline-block;
  opacity: 0;
  transform: translateY(30px);
  animation: char-reveal 0.6s var(--ease-out) forwards;
}

@keyframes char-reveal {
  to { opacity: 1; transform: translateY(0); }
}

.hero-name .whitespace { width: 0.3em; display: inline-block; }

.hero-tagline {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0;
  animation: fade-up 0.8s var(--ease-out) 1s forwards;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  opacity: 0;
  animation: fade-up 0.8s var(--ease-out) 1.3s forwards;
}

.hero-tags span {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  background: var(--color-surface);
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

.scroll-indicator {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  z-index: 2;
  opacity: 0;
  animation: fade-up 0.8s var(--ease-out) 1.6s forwards;
}

.scroll-indicator span {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
  50%      { opacity: 1;   transform: scaleY(1); }
}

/* ========================================================================
   PHOTO PARALLAX SECTIONS
   ======================================================================== */
.photo-break {
  position: relative;
  height: 80vh;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.photo-break img {
  position: absolute;
  inset: -10%;
  width: 120%;
  height: 120%;
  object-fit: cover;
  will-change: transform;
}

.photo-break .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(6, 8, 13, 0.3) 0%,
    rgba(6, 8, 13, 0.6) 50%,
    rgba(6, 8, 13, 0.8) 100%
  );
  z-index: 1;
}

[data-theme="light"] .photo-break .overlay {
  background: linear-gradient(
    to bottom,
    rgba(247, 247, 248, 0.4) 0%,
    rgba(247, 247, 248, 0.7) 50%,
    rgba(247, 247, 248, 0.9) 100%
  );
}

.photo-break .caption {
  position: relative;
  z-index: 2;
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: #ffffff;
  text-align: center;
  max-width: 600px;
  padding: 0 var(--space-6);
  opacity: 0;
}

[data-theme="light"] .photo-break .caption {
  color: var(--color-text);
}

/* ========================================================================
   ABOUT SECTION — scroll-pinned
   ======================================================================== */
.about {
  position: relative;
  padding: var(--space-32) 0;
}

.about-pin-container {
  min-height: 200vh;
}

.about-content {
  max-width: var(--content-default);
  margin: 0 auto;
  padding: 0 var(--space-6);
}



.about-heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-8);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.stat {
  text-align: center;
  opacity: 0;
}

.stat-number {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.about-description {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 65ch;
  margin-top: var(--space-8);
  opacity: 0;
}

@media (max-width: 640px) {
  .about-stats { grid-template-columns: 1fr; gap: var(--space-8); }
}

/* ========================================================================
   EXPERIENCE — Timeline
   ======================================================================== */
.experience {
  padding: clamp(var(--space-12), 8vw, var(--space-32)) 0;
  position: relative;
}

.experience-inner {
  max-width: var(--content-default);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.section-heading {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-12);
}

.timeline {
  position: relative;
  padding-left: var(--space-10);
}

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

.timeline-line-fill {
  position: absolute;
  left: 0;
  top: 0;
  width: 1px;
  height: 0;
  background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-12);
  opacity: 0;
  will-change: transform, opacity;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(-1 * var(--space-10) - 4px);
  top: 8px;
  width: 9px;
  height: 9px;
  border-radius: var(--radius-full);
  background: var(--color-surface-3);
  border: 2px solid var(--color-border);
  transition: all 0.4s var(--ease-out);
}

.timeline-item.active::before {
  background: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
}

.timeline-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all 0.4s var(--ease-out);
}

.timeline-item.active .timeline-card {
  border-color: rgba(0, 212, 255, 0.2);
  background: var(--color-surface-2);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.timeline-role {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.timeline-company {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.timeline-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.timeline-points li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-4);
  position: relative;
  line-height: 1.6;
}

.timeline-points li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.metric {
  color: var(--color-text);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* ========================================================================
   PROJECTS — Apple-style scroll-pinned showcase
   ======================================================================== */
.projects {
  position: relative;
  padding: clamp(var(--space-12), 8vw, var(--space-32)) 0;
}

.projects-header {
  max-width: var(--content-default);
  margin: 0 auto;
  padding: 0 var(--space-6);
  margin-bottom: var(--space-16);
}

.project-showcase {
  position: relative;
  /* Height set dynamically by GSAP */
}

.project-showcase-pin {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.project-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  will-change: transform, opacity;
}

.project-slide:first-child {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.project-card {
  max-width: 700px;
  width: 100%;
  text-align: center;
}

.project-index {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.project-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  line-height: 1.1;
}

.project-desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 55ch;
  margin: 0 auto var(--space-6);
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.project-tech span {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  background: var(--color-surface);
}

.project-metric {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-2);
}

.project-metric-number {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.project-metric-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Progress dots for project showcase */
.project-dots {
  position: absolute;
  right: var(--space-6);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  z-index: 10;
}

.project-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-text-faint);
  transition: all 0.4s var(--ease-out);
}

.project-dot.active {
  background: var(--color-primary);
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
  transform: scale(1.3);
}

/* ========================================================================
   SKILLS
   ======================================================================== */
.skills-section {
  padding: clamp(var(--space-12), 8vw, var(--space-32)) 0;
}

.skills-inner {
  max-width: var(--content-default);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(260px, 100%), 1fr));
  gap: var(--space-6);
  margin-top: var(--space-10);
}

.skill-category {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  opacity: 0;
  transition: border-color 0.4s var(--ease-out);
  will-change: transform, opacity;
}

.skill-category:hover {
  border-color: var(--color-primary);
}

.skill-category-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-primary);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.skill-tags span {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  border: 1px solid transparent;
  transition: all 0.3s var(--ease-out);
}

.skill-category:hover .skill-tags span {
  border-color: var(--color-border);
  color: var(--color-text);
}

/* ========================================================================
   CONTACT
   ======================================================================== */
.contact {
  padding: clamp(var(--space-12), 8vw, var(--space-32)) 0;
  text-align: center;
}

.contact-inner {
  max-width: var(--content-narrow);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.contact-heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  line-height: 1.1;
}

.contact-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-10);
  max-width: 45ch;
  margin-left: auto;
  margin-right: auto;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-10);
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-3) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: all 0.3s var(--ease-out);
}

.contact-link:hover {
  color: var(--color-text);
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
}

.contact-link svg {
  width: 18px;
  height: 18px;
}

.resume-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-bg);
  background: var(--color-primary);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all 0.3s var(--ease-out);
}

.resume-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 212, 255, 0.3);
}

.resume-btn:active {
  transform: translateY(0);
}

/* ========================================================================
   FOOTER
   ======================================================================== */
footer {
  padding: var(--space-8) var(--space-6);
  text-align: center;
  border-top: 1px solid var(--color-border);
}

footer p {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin: 0 auto;
}

footer a {
  color: var(--color-text-muted);
  text-decoration: none;
}
footer a:hover { color: var(--color-primary); }

/* ========================================================================
   UTILITIES & RESPONSIVE
   ======================================================================== */

/* Screen-reader only — hidden visually but accessible to search engines */

@media (max-width: 640px) {
  .hero-name { font-size: clamp(2rem, 8vw, 3.5rem); }
  .photo-break { height: 60vh; }
  .photo-break .caption { font-size: var(--text-xl); }
  .project-dots {
    display: flex !important;
    flex-direction: row;
    position: absolute;
    bottom: var(--space-6);
    left: 50%;
    transform: translateX(-50%);
    top: auto;
    right: auto;
  }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .nav-links { display: flex; }
  .nav-hamburger { display: none; }
  .mobile-menu { display: none; }
  
  .timeline { padding-left: var(--space-16); }
  
  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}