/**
 * Transition durations and easings updated for interactive elements (links, buttons, cards, navbar, pills, icons etc)
 * to be smoother and more noticeable, using 0.45s to 0.6s ease-in-out.
 */

:root {
  /* Colors: Deep Navy, Neon Cyan, Cool Gray */
  --navy: #0F172A;
  --cyan: #22D3EE;
  --gray: #64748B;
  --white: #fff;
  --black: #111927;
  --bg: var(--white);
  --card: #f8fafc;
  --muted: var(--gray); /* cool muted */
  --text: #1e293b;
  --accent: var(--cyan); /* primary accent */
  --accent-2: #1ec8e7;  /* subtle cyan variant */
  --border: #e2e8f0;
  --shadow: 0 2px 16px 0 rgba(15, 23, 42, 0.06);
  --glow-1: rgba(34, 211, 238, 0.07);
  --glow-2: rgba(100, 116, 139, 0.03);
  --layer: var(--white);
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1100px;
  /* --- TRANSITIONS (Updated durations for smooth interactivity across site) --- */
  --transition: 0.5s ease-in-out;
  --transition-fast: 0.38s ease-in-out;
  --transition-slow: 0.6s ease-in-out;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-display: "Space Grotesk", "Inter", sans-serif;
}

[data-theme="dark"] {
  --bg: var(--navy);
  --card: #192033;
  --muted: #a8b5c9;
  --text: #f8fafc;
  --accent: var(--cyan);
  --accent-2: #67e8f9;
  --border: rgba(100, 116, 139, 0.26);
  --shadow: 0 14px 60px rgba(34, 211, 238, 0.04), 0 2px 12px rgba(15, 23, 42, 0.24);
  --glow-1: rgba(34, 211, 238, 0.12);
  --glow-2: rgba(100, 116, 139, 0.08);
  --layer: rgba(15, 23, 42, 0.92);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: radial-gradient(circle at 25% 18%, var(--glow-1) 20%, transparent 32%),
    radial-gradient(circle at 70% 5%, var(--glow-2) 18%, transparent 32%), var(--bg);
  min-height: 100vh;
  scroll-behavior: smooth;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  /* Slightly longer transition on background and color for smooth page changes */
  transition: background 0.5s ease-in-out, color 0.45s ease-in-out;
}

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

a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1.5px solid transparent;
  /* Updated transitions for link color/background/border/box-shadow */
  transition:
    color 0.5s ease-in-out,
    border-bottom 0.45s ease-in-out,
    box-shadow 0.5s ease-in-out,
    background-color 0.5s ease-in-out;
  will-change: color, border-bottom, box-shadow, background-color, transform;
}

a:hover,
a:focus-visible {
  color: var(--navy);
  background: linear-gradient(90deg, var(--glow-1) 50%, transparent 100%);
  border-bottom: 1.5px solid var(--cyan);
  box-shadow: 0 2px 18px 0 rgba(34, 211, 238, 0.08);
  outline: none;
  transform: translateY(-2px) scale(1.025);
  /* Matching transition duration for link interactivity */
  transition:
    color 0.5s ease-in-out,
    border-bottom 0.45s ease-in-out,
    box-shadow 0.5s ease-in-out,
    background-color 0.5s ease-in-out,
    transform 0.5s ease-in-out;
}

section {
  scroll-margin-top: 100px;
}

.section {
  padding: 80px 20px;
}

.section--accent {
  background: linear-gradient(120deg, rgba(34, 211, 238, 0.11), rgba(100,116,139,0.07));
}

.section__header {
  max-width: 700px;
  margin: 0 auto 40px;
  text-align: center;
}

.section__intro {
  color: var(--muted);
}

.eyebrow {
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--cyan);
  font-size: 0.78rem;
  margin-bottom: 8px;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  letter-spacing: -0.02em;
  color: var(--navy);
  /* Smoother transition for heading color */
  transition: color 0.38s ease-in-out;
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4 {
  color: var(--white);
}

p {
  margin: 0 0 16px;
  color: var(--muted);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: var(--layer);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 6px 24px rgba(15, 23, 42, 0.03);
  /* Smoother transitions for background and box-shadow on the header */
  transition: background 0.45s ease-in-out, box-shadow 0.45s ease-in-out, border-bottom 0.45s ease-in-out;
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.nav__brand {
  font-weight: 700;
  font-size: 1.13rem;
  letter-spacing: -0.01em;
  color: var(--navy);
  /* Updated text color/shadow transition for brand */
  transition: color 0.5s ease-in-out, text-shadow 0.5s ease-in-out;
}

.nav__brand:hover,
.nav__brand:focus-visible {
  color: var(--cyan);
  text-shadow: 0 2px 12px rgba(34, 211, 238, 0.20);
  transition: color 0.5s ease-in-out, text-shadow 0.5s ease-in-out;
}

[data-theme="dark"] .nav__brand {
  color: var(--white);
}

.nav__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 16px;
  /* Longer, smoother menu transitions for nav links */
  transition: background 0.6s ease-in-out, box-shadow 0.6s ease-in-out, max-height 0.5s ease-in-out;
}

.nav__links a {
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--gray);
  font-weight: 500;
  letter-spacing: 0.01em;
  background: none;
  /* Smoother transition for nav links, align durations */
  transition:
    color 0.5s ease-in-out,
    background-color 0.55s ease-in-out,
    box-shadow 0.5s ease-in-out,
    border 0.5s ease-in-out,
    transform 0.5s ease-in-out;
  will-change: color, background-color, box-shadow, border, transform;
}

.nav__links a:hover,
.nav__links a:focus-visible {
  color: var(--navy);
  background: rgba(34, 211, 238, 0.14);
  box-shadow: 0 3px 18px 0 rgba(34, 211, 238, 0.10);
  outline: none;
  transform: translateY(-2px) scale(1.045);
  /* Match link transitions for hover for smooth effect */
  transition:
    color 0.5s ease-in-out,
    background-color 0.55s ease-in-out,
    box-shadow 0.5s ease-in-out,
    border 0.5s ease-in-out,
    transform 0.5s ease-in-out;
}

[data-theme="dark"] .nav__links a:hover,
[data-theme="dark"] .nav__links a:focus-visible {
  color: var(--text);
  background: rgba(34, 211, 238, 0.18);
}

.nav__links a.is-active {
  color: var(--navy);
  background: rgba(34, 211, 238, 0.32);
  border: 1.5px solid var(--cyan);
  font-weight: 700;
  box-shadow: 0 3px 16px rgba(34, 211, 238, 0.19);
  transform: scale(1.05);
  /* Smoother transition for active nav link */
  transition:
    color 0.5s ease-in-out,
    background-color 0.55s ease-in-out,
    box-shadow 0.5s ease-in-out,
    border 0.5s ease-in-out,
    transform 0.5s ease-in-out;
}

[data-theme="dark"] .nav__links a.is-active {
  color: var(--text);
  background: rgba(34, 211, 238, 0.25);
}

.nav__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  padding: 8px;
  border-radius: 10px;
  border: 1.5px solid var(--border);
  background: transparent;
  cursor: pointer;
  /* Smoother transitions for nav toggle */
  transition: background 0.5s ease-in-out, border 0.5s ease-in-out, box-shadow 0.5s ease-in-out, transform 0.5s ease-in-out;
  will-change: background, border, box-shadow, transform;
}

.nav__toggle:hover,
.nav__toggle:focus-visible {
  background: rgba(34, 211, 238, 0.16);
  border-color: var(--cyan);
  box-shadow: 0 6px 28px 0 rgba(34, 211, 238, 0.11);
  transform: scale(1.06);
  /* Updated for consistency with longer, smoother animation */
  transition: background 0.5s ease-in-out, border 0.5s ease-in-out, box-shadow 0.5s ease-in-out, transform 0.5s ease-in-out;
}

.nav__toggle span {
  height: 2px;
  width: 100%;
  background: var(--navy);
  border-radius: 999px;
  /* Smoother bar transform/fade transition for hamburgers */
  transition:
    transform 0.48s ease-in-out,
    opacity 0.45s ease-in-out,
    background 0.5s ease-in-out;
}

[data-theme="dark"] .nav__toggle span {
  background: var(--cyan);
}

.nav--open .nav__toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav--open .nav__toggle span:nth-child(2) {
  opacity: 0;
}

.nav--open .nav__toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav--open .nav__links {
  max-height: 320px;
  opacity: 1;
  pointer-events: auto;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: rgba(34, 211, 238, 0.07);
  color: var(--navy);
  cursor: pointer;
  font-weight: 600;
  margin-left: auto;
  /* Smoother transitions on theme toggle state */
  transition:
    background-color 0.5s ease-in-out,
    border 0.5s ease-in-out,
    color 0.5s ease-in-out,
    box-shadow 0.5s ease-in-out,
    transform 0.5s ease-in-out;
  will-change: background, border, color, box-shadow, transform;
}

[data-theme="dark"] .theme-toggle {
  color: var(--cyan);
  background: rgba(0,0,0,0.10);
  border-color: var(--cyan);
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  background: rgba(34, 211, 238, 0.18);
  border-color: var(--cyan);
  color: var(--accent-2);
  box-shadow: 0 4px 16px 0 rgba(34, 211, 238, 0.10);
  transform: translateY(-2px) scale(1.045);
  transition:
    background-color 0.5s ease-in-out,
    border 0.5s ease-in-out,
    color 0.5s ease-in-out,
    box-shadow 0.5s ease-in-out,
    transform 0.5s ease-in-out;
}

.theme-toggle__icon {
  font-size: 1rem;
}

.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: 30px;
  align-items: center;
}

.hero__content h1 {
  font-size: clamp(2.4rem, 6vw, 3.6rem);
}

.lead {
  font-size: 1.07rem;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 22px 0 12px;
}

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.hero__visual {
  position: relative;
  justify-self: center;
}

.hero__blob {
  width: 260px;
  height: 260px;
  border-radius: 999px;
  background:
    radial-gradient(circle at 30% 30%, rgba(34, 211, 238, 0.65), rgba(34,211,238, 0.05)),
    radial-gradient(circle at 70% 60%, rgba(100, 116, 139, 0.18), rgba(100, 116, 139, 0.04));
  filter: blur(0px);
  animation: float 9s ease-in-out infinite alternate;
  /* Smoother shadow transition on blob visual */
  transition: box-shadow 0.6s ease-in-out;
}

.hero__avatar {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  transform: translateY(-8px);
}

.hero__img {
  width: 260px;
  height: 260px;
  border-radius: 999px;
  object-fit: cover;
  object-position: center top;
  border: 5px solid rgba(34, 211, 238, 0.95);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.45);
}

.about__grid,
.projects__grid,
.services__grid,
.contact__grid {
  max-width: var(--max-width);
  margin: 0 auto;
}

.about__grid {
  display: grid;
  gap: 18px;
}

.card {
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
  color: var(--text);
  /* Smoother transitions for cards on border, bg, shadow, transform */
  transition:
    border-color 0.5s ease-in-out,
    box-shadow 0.5s ease-in-out,
    background-color 0.5s ease-in-out,
    transform 0.55s ease-in-out;
  will-change: border-color, box-shadow, background-color, transform;
}

.card:hover,
.card:focus-within {
  border-color: var(--cyan);
  background: #f0fafe;
  box-shadow: 0 8px 32px 0 rgba(34, 211, 238, 0.13);
  transform: translateY(-3px) scale(1.025);
  /* Ensure hover matches card transition duration/easing */
  transition:
    border-color 0.5s ease-in-out,
    box-shadow 0.5s ease-in-out,
    background-color 0.5s ease-in-out,
    transform 0.55s ease-in-out;
}

[data-theme="dark"] .card {
  background: #14203a;
  color: var(--text);
  border-color: #26334e;
}

[data-theme="dark"] .card:hover,
[data-theme="dark"] .card:focus-within {
  border-color: var(--cyan);
  background: #193041;
  box-shadow: 0 10px 36px 0 rgba(34, 211, 238, 0.16);
  transform: translateY(-3px) scale(1.025);
  /* Ensure consistent hover transition in dark mode */
  transition:
    border-color 0.5s ease-in-out,
    box-shadow 0.5s ease-in-out,
    background-color 0.5s ease-in-out,
    transform 0.55s ease-in-out;
}

.skills-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}

.skills-list li {
  display: grid;
  gap: 6px;
}

.skill-bar {
  height: 8px;
  background: #e2e8f0;
  border-radius: 999px;
  overflow: hidden;
}

.skill-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 999px;
  width: 0;
  /* Smoother skill bar width transition */
  transition: width 0.55s ease-in-out;
}

.card.is-visible .skill-bar span {
  width: var(--skill-level, 0%);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.09);
  border: 1px solid var(--border);
  color: var(--navy);
  font-size: 0.92rem;
  /* Smoother transition for chip background, color, shadow, transform */
  transition: background 0.5s ease-in-out, color 0.5s ease-in-out, transform 0.5s ease-in-out, box-shadow 0.5s ease-in-out;
  will-change: background, color, transform, box-shadow;
}

.chip:hover,
.chip:focus-visible {
  background: rgba(34, 211, 238, 0.18);
  color: var(--cyan);
  box-shadow: 0 3px 10px 0 rgba(34, 211, 238, 0.08);
  transform: translateY(-1px) scale(1.04);
  transition: background 0.5s ease-in-out, color 0.5s ease-in-out, transform 0.5s ease-in-out, box-shadow 0.5s ease-in-out;
}

[data-theme="dark"] .chip {
  background: rgba(34, 211, 238, 0.14);
  color: var(--cyan);
}

.projects__grid {
  display: grid;
  gap: 18px;
}

.project {
  display: grid;
  gap: 12px;
}

.project__tech {
  color: var(--cyan);
  font-weight: 600;
}

.project__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.services__grid,
.contact__grid {
  display: grid;
  gap: 18px;
}

.service {
  text-align: left;
}

.service__icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: rgba(34, 211, 238, 0.09);
  margin-bottom: 12px;
  font-size: 1.3rem;
  color: var(--cyan);
  /* Smoother icon background/shadow/transform */
  transition: background 0.45s ease-in-out, box-shadow 0.5s ease-in-out, transform 0.5s ease-in-out;
  will-change: background, box-shadow, transform;
}
.service__icon:hover,
.service__icon:focus-visible {
  background: rgba(34, 211, 238, 0.19);
  box-shadow: 0 1px 18px 0 rgba(34, 211, 238, 0.08);
  transform: scale(1.1);
  transition: background 0.45s ease-in-out, box-shadow 0.5s ease-in-out, transform 0.5s ease-in-out;
}

.timeline {
  max-width: var(--max-width);
  margin: 0 auto;
  border-left: 1.5px solid var(--border);
  padding-left: 20px;
  display: grid;
  gap: 26px;
  /* Smoother border transition on timeline */
  transition: border-color 0.5s ease-in-out;
}

.timeline__item {
  position: relative;
  padding-left: 12px;
}

.timeline__dot {
  position: absolute;
  left: -10.5px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(140deg, var(--cyan), var(--accent-2));
  box-shadow: 0 0 0 6px rgba(34, 211, 238, 0.12);
  transition: box-shadow 0.5s ease-in-out;
}

.timeline__dot:hover,
.timeline__dot:focus-visible {
  box-shadow: 0 0 0 10px rgba(34, 211, 238, 0.18);
  transition: box-shadow 0.5s ease-in-out;
}

.timeline__date {
  color: var(--cyan);
  font-weight: 700;
  margin: 0 0 6px;
  transition: color 0.5s ease-in-out;
}

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

.contact__form {
  display: grid;
  gap: 12px;
}

.contact__form input,
.contact__form textarea {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  background: #f7fafc;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  /* Smoother transitions for form field focus/interactivity */
  transition: border-color 0.45s ease-in-out, box-shadow 0.5s ease-in-out, background 0.5s ease-in-out, color 0.5s ease-in-out;
  will-change: border, box-shadow, background, color;
}

[data-theme="dark"] .contact__form input,
[data-theme="dark"] .contact__form textarea {
  background: #14203a;
  color: var(--text);
  border-color: #253159;
}

.contact__form input:focus,
.contact__form textarea:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px var(--cyan);
  background: #ecfdff;
  color: var(--navy);
  /* Matching field focus transitions */
  transition: border-color 0.45s ease-in-out, box-shadow 0.5s ease-in-out, background 0.5s ease-in-out, color 0.5s ease-in-out;
}

.contact__info {
  display: grid;
  gap: 10px;
}

.contact__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.contact__links a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(34, 211, 238, 0.08);
  border: 1.5px solid var(--border);
  color: var(--navy);
  /* Smoother link transitions for contact actions */
  transition:
    transform 0.6s ease-in-out,
    border 0.5s ease-in-out,
    background-color 0.55s ease-in-out,
    color 0.55s ease-in-out,
    box-shadow 0.5s ease-in-out;
  will-change: transform, border, background-color, color, box-shadow;
}

.contact__links a:hover,
.contact__links a:focus-visible {
  transform: translateY(-3px) scale(1.03);
  border-color: var(--cyan);
  background: rgba(34, 211, 238, 0.21);
  color: var(--cyan);
  box-shadow: 0 3px 18px 0 rgba(34, 211, 238, 0.11);
  transition:
    transform 0.6s ease-in-out,
    border 0.5s ease-in-out,
    background-color 0.55s ease-in-out,
    color 0.55s ease-in-out,
    box-shadow 0.5s ease-in-out;
}

[data-theme="dark"] .contact__links a {
  background: rgba(34, 211, 238, 0.13);
  color: var(--cyan);
  border-color: var(--cyan);
}

.contact__icon {
  font-size: 1.1rem;
}

.site-footer {
  text-align: center;
  padding: 26px 20px 40px;
  color: var(--muted);
  font-size: 0.95rem;
  border-top: 1.5px solid var(--border);
  background: rgba(15, 23, 42, 0.94);
  /* Longer transitions for footer appearance changes */
  transition: background 0.5s ease-in-out, color 0.5s ease-in-out, border-top 0.5s ease-in-out;
}

/* BUTTONS */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 14px;
  font-weight: 700;
  border: 1.5px solid transparent;
  background: var(--cyan);
  color: var(--navy);
  font-size: 1.04rem;
  cursor: pointer;
  box-shadow: 0 6px 32px 0 rgba(34,211,238,0.06);
  outline: none;
  /* Smoother button transitions */
  transition:
    transform 0.55s ease-in-out,
    box-shadow 0.5s ease-in-out,
    background-color 0.55s ease-in-out,
    color 0.5s ease-in-out,
    border 0.5s ease-in-out;
  will-change: transform, box-shadow, background-color, color, border;
}

.btn:hover,
.btn:focus-visible {
  background: linear-gradient(93deg, var(--accent-2) 0%, var(--cyan) 70%);
  color: var(--navy);
  box-shadow: 0 8px 48px 0 rgba(34,211,238,0.13);
  border-color: var(--cyan);
  transform: translateY(-2px) scale(1.045);
  transition:
    transform 0.55s ease-in-out,
    box-shadow 0.5s ease-in-out,
    background-color 0.55s ease-in-out,
    color 0.5s ease-in-out,
    border 0.5s ease-in-out;
}

.btn--primary {
  background: linear-gradient(93deg, var(--cyan) 70%, var(--accent-2) 100%);
  color: var(--navy);
  border: 1.5px solid var(--cyan);
  box-shadow: 0 16px 38px rgba(34,211,238,0.16);
  /* Smoother transition for primary buttons */
  transition:
    background-color 0.55s ease-in-out,
    color 0.5s ease-in-out,
    transform 0.6s ease-in-out,
    box-shadow 0.55s ease-in-out,
    border 0.5s ease-in-out;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: var(--navy);
  color: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 16px 55px 0 rgba(34,211,238,0.22);
  transform: translateY(-3px) scale(1.05);
  transition:
    background-color 0.55s ease-in-out,
    color 0.5s ease-in-out,
    transform 0.6s ease-in-out,
    box-shadow 0.55s ease-in-out,
    border 0.5s ease-in-out;
}

.btn--ghost {
  background: transparent;
  color: var(--navy);
  border-color: var(--cyan);
  box-shadow: none;
  transition:
    background-color 0.55s ease-in-out,
    color 0.5s ease-in-out,
    border 0.5s ease-in-out,
    transform 0.55s ease-in-out,
    box-shadow 0.5s ease-in-out;
}

.btn--ghost:hover,
.btn--ghost:focus-visible {
  border-color: var(--accent);
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.15);
  box-shadow: 0 2px 10px rgba(34,211,238,0.15);
  transform: translateY(-2px) scale(1.035);
  transition:
    border 0.5s ease-in-out,
    color 0.5s ease-in-out,
    background-color 0.55s ease-in-out,
    transform 0.55s ease-in-out,
    box-shadow 0.5s ease-in-out;
}

[data-theme="dark"] .btn,
[data-theme="dark"] .btn--primary {
  background: var(--cyan);
  color: var(--navy);
}

[data-theme="dark"] .btn--ghost {
  background: transparent;
  color: var(--cyan);
  border-color: var(--cyan);
}

.pill {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.07);
  border: 1px solid var(--cyan);
  color: var(--navy);
  font-weight: 600;
  /* Smoother transition for pills */
  transition:
    background-color 0.5s ease-in-out,
    color 0.5s ease-in-out,
    box-shadow 0.5s ease-in-out,
    transform 0.5s ease-in-out;
  will-change: background-color, color, box-shadow, transform;
}
.pill:hover,
.pill:focus-visible {
  background: rgba(34, 211, 238, 0.18);
  color: var(--cyan);
  box-shadow: 0 2px 12px 0 rgba(34, 211, 238, 0.09);
  transform: translateY(-1.5px) scale(1.025);
  transition:
    background-color 0.5s ease-in-out,
    color 0.5s ease-in-out,
    box-shadow 0.5s ease-in-out,
    transform 0.5s ease-in-out;
}

[data-theme="dark"] .pill {
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.13);
}

[data-animate] {
  opacity: 0;
  transform: translateY(12px);
  /* Smoother transitions for entrance animation */
  transition: opacity 0.55s ease-in-out, transform 0.55s ease-in-out;
}

[data-animate].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes float {
  from {
    transform: translateY(0) scale(1);
  }
  to {
    transform: translateY(-10px) scale(1.02);
  }
}

@media (max-width: 720px) {
  .nav__links {
    position: absolute;
    top: 72px;
    right: 20px;
    background: rgba(15, 23, 42, 0.98);
    border: 1.5px solid var(--cyan);
    border-radius: var(--radius);
    padding: 8px;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    /* Smoother collapsed/expanded mobile menu transitions */
    transition:
      max-height 0.5s ease-in-out,
      opacity 0.5s ease-in-out,
      background-color 0.5s ease-in-out,
      box-shadow 0.5s ease-in-out;
  }
  .nav__links a {
    width: 100%;
  }
}

@media (min-width: 721px) {
  .nav__toggle {
    display: none;
  }

  .hero {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .about__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .projects__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .services__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .contact__grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .section {
    padding: 120px 20px;
  }

  .timeline {
    gap: 34px;
  }
}