/* ============================================================
   Rudransh Portfolio — Main Stylesheet
   Font: Raleway (Google Fonts)
   Design: Minimal, dark, glassmorphism nav
   ============================================================ */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Raleway:ital,wght@0,100..900;1,100..900&display=swap');

/* ============================================================
   CSS Custom Properties (Design Tokens)
   ============================================================ */
:root {
  --scroll-thumb: rgba(255, 255, 255, 0.18);
  --scroll-thumb-hover: rgba(255, 255, 255, 0.45);
}

/* Change this selector to match how your theme toggle works */
[data-theme="light"] {
  --scroll-thumb: rgba(0, 0, 0, 0.2);
  --scroll-thumb-hover: rgba(0, 0, 0, 0.5);
}

/* Firefox */
html {
  scrollbar-width: thin;
  scrollbar-color: var(--scroll-thumb) transparent;
}

/* Chrome, Edge, Safari */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--scroll-thumb);
  border-radius: 999px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--scroll-thumb-hover);
  background-clip: padding-box;
}
:root {
  /* Colors */
  --bg: #080808;
  --bg-alt: #0f0f0f;
  --surface: rgba(255, 255, 255, 0.03);
  --surface-hover: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.12);

  --text-primary: #e2e2e2;
  --text-secondary: #888888;
  --text-muted: #555555;
  --text-accent: #c8c8c8;

  --accent: #d4d4d4;
  --accent-dim: rgba(212, 212, 212, 0.12);
  --accent-glow: rgba(212, 212, 212, 0.06);

  /* Nav glass */
  --nav-bg: rgba(12, 12, 12, 0.72);
  --nav-border: rgba(255, 255, 255, 0.09);

  /* Pattern */
  --pattern-color: rgba(255, 255, 255, 0.028);

  /* Cursor */
  --cursor-dot: rgba(255, 255, 255, 0.85);
  --cursor-ring: rgba(255, 255, 255, 0.3);
  --cursor-ring-hover: rgba(255, 255, 255, 0.65);

  /* Typography */
  --font: 'Raleway', system-ui, sans-serif;
  --fs-xs: 0.72rem;
  --fs-sm: 0.85rem;
  --fs-base: 1rem;
  --fs-md: 1.1rem;
  --fs-lg: 1.35rem;
  --fs-xl: 1.75rem;
  --fs-2xl: 2.5rem;
  --fs-3xl: 3.5rem;
  --fs-hero: clamp(3rem, 7vw, 5.5rem);

  /* Spacing */
  --section-gap: 7rem;
  --card-pad: 1.75rem;
  --radius: 12px;
  --radius-sm: 8px;

  /* Transitions */
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-fast: 0.18s;
  --dur-base: 0.32s;
  --dur-slow: 0.55s;
}

/* Contrast toggle — slightly lighter mode */
body.contrast-light {
  --bg: #f8f8f8;
  --bg-alt: #ececec;
  --surface: rgba(0, 0, 0, 0.05);
  --surface-hover: rgba(189, 189, 189, 0.09);
  --border: rgba(0, 0, 0, 0.1);
  --text-primary: #2c2c2c;
  --text-secondary: #181818;
  --nav-bg: rgba(248, 248, 248, 0.80);
  --pattern-color: rgba(0, 0, 0, 0.045);
  --cursor-dot: rgba(0, 0, 0, 0.8);
  --cursor-ring: rgba(0, 0, 0, 0.25);
  --cursor-ring-hover: rgba(0, 0, 0, 0.55);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  cursor: none;
  transition: background-color var(--dur-slow) var(--ease);
}

body.loading {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

ul {
  list-style: none;
}

::selection {
  background: rgba(212, 212, 212, 0.18);
  color: #fff;
}

/* ============================================================
   Custom Cursor
   ============================================================ */
#cursor-dot,
#cursor-ring {
  position: fixed;
  pointer-events: none;
  z-index: 99999;
  transform: translate(-50%, -50%);
  transition: opacity var(--dur-fast) var(--ease);
}

#cursor-dot {
  width: 5px;
  height: 5px;
  background: var(--cursor-dot);
  border-radius: 50%;
  transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
}

#cursor-ring {
  width: 32px;
  height: 32px;
  border: 1px solid var(--cursor-ring);
  border-radius: 50%;
  transition: width var(--dur-base) var(--ease-spring),
    height var(--dur-base) var(--ease-spring),
    border-color var(--dur-base) var(--ease),
    transform 0.08s linear,
    opacity var(--dur-fast) var(--ease);
}

body.cursor-hover #cursor-ring {
  width: 52px;
  height: 52px;
  border-color: var(--cursor-ring-hover);
}

body.cursor-hover #cursor-dot {
  transform: translate(-50%, -50%) scale(0.4);
}

/* ============================================================
   Animated Background Pattern
   ============================================================ */
#bg-pattern {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

#bg-pattern::before {
  content: '';
  position: absolute;
  inset: -10%;
  width: 120%;
  height: 120%;
  background-image:
    linear-gradient(var(--pattern-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--pattern-color) 1px, transparent 1px);
  background-size: 52px 52px;
  animation: patternDrift 80s linear infinite;
  will-change: transform;
}

#bg-pattern::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, transparent 30%, var(--bg) 100%);
}

@keyframes patternDrift {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }

  25% {
    transform: translate(8px, 12px) rotate(0.3deg);
  }

  50% {
    transform: translate(16px, 0px) rotate(0deg);
  }

  75% {
    transform: translate(8px, -12px) rotate(-0.3deg);
  }

  100% {
    transform: translate(0, 0) rotate(0deg);
  }
}

/* ============================================================
   Page Loader
   ============================================================ */
#page-loader {
  position: fixed;
  inset: 0;
  z-index: 99990;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
  transition: opacity 0.6s var(--ease), visibility 0.6s var(--ease);
}

#page-loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-name {
  font-size: var(--fs-lg);
  font-weight: 300;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0;
  animation: loaderFadeIn 0.6s var(--ease) 0.3s forwards;
}

.loader-bar {
  width: 120px;
  height: 1px;
  background: var(--border);
  position: relative;
  overflow: hidden;
  opacity: 0;
  animation: loaderFadeIn 0.4s var(--ease) 0.5s forwards;
}

.loader-bar::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--text-secondary);
  transform: translateX(-100%);
  animation: loaderSlide 1.2s var(--ease) 0.6s forwards;
}

@keyframes loaderFadeIn {
  to {
    opacity: 1;
  }
}

@keyframes loaderSlide {
  to {
    transform: translateX(0);
  }
}

/* ============================================================
   Layout
   ============================================================ */
main {
  position: relative;
  z-index: 1;
  max-width: 780px;
  margin: 0 auto;
  padding: 0 2rem 10rem;
}

/* ============================================================
   Section Base
   ============================================================ */
section {
  padding-top: var(--section-gap);
}

.section-label {
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
  max-width: 80px;
}

/* ============================================================
   Hero / About Section
   ============================================================ */
#about {
  padding-top: clamp(6rem, 14vh, 10rem);
  min-height: 90vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-greeting {
  font-size: var(--fs-sm);
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1rem;
  opacity: 0;
  transform: translateY(14px);
  animation: fadeUp var(--dur-slow) var(--ease) 1.2s forwards;
}

.hero-name {
  font-size: var(--fs-hero);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  opacity: 0;
  transform: translateY(18px);
  animation: fadeUp var(--dur-slow) var(--ease) 1.35s forwards;
}

.hero-tagline {
  font-size: var(--fs-xl);
  font-weight: 300;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(14px);
  animation: fadeUp var(--dur-slow) var(--ease) 1.5s forwards;
}

.hero-intro {
  font-size: var(--fs-md);
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 580px;
  margin-bottom: 1.4rem;
  opacity: 0;
  transform: translateY(14px);
  animation: fadeUp var(--dur-slow) var(--ease) 1.65s forwards;
}

.hero-detail {
  font-size: var(--fs-base);
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 560px;
  opacity: 0;
  transform: translateY(14px);
  animation: fadeUp var(--dur-slow) var(--ease) 1.8s forwards;
}

.hero-scroll-hint {
  margin-top: 4rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: var(--fs-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0;
  animation: fadeUp var(--dur-slow) var(--ease) 2.1s forwards;
}

.scroll-line {
  width: 36px;
  height: 1px;
  background: var(--text-muted);
  animation: scrollLinePulse 2.5s ease-in-out 2.5s infinite;
}

@keyframes scrollLinePulse {

  0%,
  100% {
    opacity: 0.4;
    width: 36px;
  }

  50% {
    opacity: 1;
    width: 52px;
  }
}

/* ============================================================
   Scroll Reveal Animation
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--dur-slow) var(--ease),
    transform var(--dur-slow) var(--ease);
}

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

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

/* Stagger children */
.reveal-stagger>* {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--dur-slow) var(--ease),
    transform var(--dur-slow) var(--ease);
}

.reveal-stagger.visible>*:nth-child(1) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0s;
}

.reveal-stagger.visible>*:nth-child(2) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.07s;
}

.reveal-stagger.visible>*:nth-child(3) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.14s;
}

.reveal-stagger.visible>*:nth-child(4) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.21s;
}

.reveal-stagger.visible>*:nth-child(5) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.28s;
}

.reveal-stagger.visible>*:nth-child(6) {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.35s;
}

/* ============================================================
   Experience — Timeline Cards
   ============================================================ */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

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

.timeline-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.3rem;
  padding: 1.75rem 0 1.75rem 1.75rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  transition: background var(--dur-base) var(--ease);
}

.timeline-item:last-child {
  border-bottom: none;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -4px;
  top: 2.1rem;
  width: 7px;
  height: 7px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: background var(--dur-base) var(--ease), transform var(--dur-base) var(--ease-spring);
}

.timeline-item:hover::before {
  background: var(--text-primary);
  transform: scale(1.4);
}

.timeline-duration {
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.timeline-role {
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

.timeline-company {
  font-size: var(--fs-sm);
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 0.6rem;
}

.timeline-desc {
  font-size: var(--fs-sm);
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ============================================================
   Education Cards
   ============================================================ */
.edu-list {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.edu-card {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.edu-card:last-child {
  border-bottom: none;
}

.edu-degree {
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--text-primary);
}

.edu-institution {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  font-weight: 400;
}

.edu-year {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.1em;
}

.edu-desc {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  font-weight: 300;
  margin-top: 0.3rem;
}

/* ============================================================
   Skills — Tag Pills
   ============================================================ */
.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.skill-tag {
  padding: 0.45rem 0.95rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: var(--fs-sm);
  font-weight: 400;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  transition: background var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease),
    transform var(--dur-fast) var(--ease-spring);
  cursor: default;
}

.skill-tag:hover {
  background: var(--surface-hover);
  border-color: var(--border-strong);
  color: var(--text-primary);
  transform: translateY(-2px);
}

/* ============================================================
   Projects Grid
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.project-card {
  background: var(--bg);
  padding: var(--card-pad);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: background var(--dur-base) var(--ease);
  position: relative;
}

.project-card:hover {
  background: var(--surface);
}

.project-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.project-name {
  font-size: var(--fs-md);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.25;
}

.project-links {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}

.project-link {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.8rem;
  transition: border-color var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease),
    background var(--dur-fast) var(--ease);
  cursor: pointer;
}

.project-link:hover {
  border-color: var(--border-strong);
  color: var(--text-primary);
  background: var(--surface-hover);
}

.project-desc {
  font-size: var(--fs-sm);
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
}

.tech-chip {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.project-featured-badge {
  position: absolute;
  top: var(--card-pad);
  right: var(--card-pad);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ============================================================
   Leadership
   ============================================================ */
.leadership-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.leadership-item {
  display: flex;
  gap: 1.25rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}

.leadership-item:last-child {
  border-bottom: none;
}

.leadership-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.leadership-body {
  flex: 1;
}

.leadership-role {
  font-size: var(--fs-base);
  font-weight: 600;
  color: var(--text-primary);
}

.leadership-org {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.leadership-duration {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.leadership-desc {
  font-size: var(--fs-sm);
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.7;
  margin-top: 0.4rem;
}

/* ============================================================
   Connect / Contact Section
   ============================================================ */
.connect-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.connect-info h3 {
  font-size: var(--fs-lg);
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.connect-info p {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  font-weight: 300;
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.connect-details {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.connect-detail-item {
  display: flex;
  gap: 0.65rem;
  align-items: center;
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

.connect-detail-item span:first-child {
  color: var(--text-muted);
  width: 14px;
  text-align: center;
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.form-group input,
.form-group textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-family: var(--font);
  font-size: var(--fs-sm);
  font-weight: 300;
  outline: none;
  transition: border-color var(--dur-fast) var(--ease),
    background var(--dur-fast) var(--ease);
  resize: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--border-strong);
  background: var(--surface-hover);
}

.form-group textarea {
  min-height: 110px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.btn-submit {
  align-self: flex-start;
  padding: 0.75rem 2rem;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease),
    transform var(--dur-fast) var(--ease-spring);
}

.btn-submit:hover {
  background: var(--surface-hover);
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-1px);
}

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

.form-status {
  font-size: var(--fs-sm);
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  display: none;
}

.form-status.success {
  background: rgba(100, 200, 100, 0.08);
  border: 1px solid rgba(100, 200, 100, 0.2);
  color: #90d490;
  display: block;
}

.form-status.error {
  background: rgba(200, 80, 80, 0.08);
  border: 1px solid rgba(200, 80, 80, 0.2);
  color: #d49090;
  display: block;
}

/* ============================================================
   Bottom Navigation Island
   ============================================================ */
#nav-island {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(120px);
  z-index: 9990;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.6rem 0.8rem;
  background: var(--nav-bg);
  border: 1px solid var(--nav-border);
  border-radius: 100px;
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.45),
    0 1px 0 rgba(255, 255, 255, 0.04) inset;
  transition: transform var(--dur-slow) var(--ease-spring),
    opacity var(--dur-slow) var(--ease);
  opacity: 0;
}

#nav-island.visible {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.18rem;
  padding: 0.5rem 0.75rem;
  border-radius: 80px;
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font);
  font-size: 0;
  transition: background var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease),
    transform var(--dur-fast) var(--ease-spring);
  text-decoration: none;
  position: relative;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.nav-item.active {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
}

.nav-item svg,
.nav-item .nav-icon {
  width: 18px;
  height: 18px;
  display: block;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.nav-label {
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1;
}

.nav-separator {
  width: 1px;
  height: 20px;
  background: var(--border);
  margin: 0 0.15rem;
  flex-shrink: 0;
}

/* Contrast toggle button */
#contrast-toggle {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.18rem;
  padding: 0.5rem 0.75rem;
  border-radius: 80px;
  cursor: pointer;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font);
  transition: background var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease),
    transform var(--dur-fast) var(--ease-spring);
}

#contrast-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-primary);
  transform: translateY(-2px);
}

#contrast-toggle svg {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Nav tooltip disabled */

/* ============================================================
   Footer
   ============================================================ */
footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 3rem 2rem 8rem;
  color: var(--text-muted);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  border-top: 1px solid var(--border);
}

footer a {
  color: var(--text-muted);
  transition: color var(--dur-fast) var(--ease);
}

footer a:hover {
  color: var(--text-primary);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 700px) {
  main {
    padding: 0 1.25rem 10rem;
  }

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

  .connect-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  #nav-island {
    gap: 0.1rem;
    padding: 0.5rem 0.6rem;
  }

  .nav-item {
    padding: 0.5rem 0.55rem;
  }

  .nav-label {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero-tagline {
    font-size: var(--fs-lg);
  }

  .section-gap {
    --section-gap: 5rem;
  }
}