/* ==========================================================================
   SejatiDev — app.css
   Design system + layout styles for the SejatiDev landing page.
   Organized by section. Every class follows a flat, readable naming scheme.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design tokens (light theme)
   -------------------------------------------------------------------------- */
:root {
  --color-bg: #f6f8fb;
  --color-bg-soft: #eef2f7;
  --color-surface: #ffffff;
  --color-surface-2: #f1f5f9;
  --color-border: rgba(15, 23, 42, 0.12);
  --color-border-strong: rgba(15, 23, 42, 0.2);

  --color-text: #0f172a;
  --color-text-muted: #475569;
  --color-text-faint: #64748b;

  --color-accent: #7c8cff;
  --color-accent-2: #22d3ee;
  --color-accent-text: #0891b2;
  --color-accent-deep: #4f46e5;
  --color-accent-soft: rgba(124, 140, 255, 0.12);
  --color-accent-glow: rgba(124, 140, 255, 0.3);

  --color-live: #059669;
  --color-testing: #9333ea;
  --color-development: #2563eb;
  --color-prototype: #d97706;

  --font-heading: "Space Grotesk", ui-sans-serif, system-ui, "Segoe UI", sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "Cascadia Code", Consolas, monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --container: 1180px;
  --navbar-height: 72px;

  --shadow-card: 0 18px 40px -20px rgba(15, 23, 42, 0.25);
  --shadow-glow: 0 10px 40px -10px var(--color-accent-glow);
}

/* --------------------------------------------------------------------------
   2. Reset + base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--navbar-height) + 10px);
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

body.nav-open {
  overflow: hidden;
}

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

ul,
ol {
  list-style: none;
  padding: 0;
}

a {
  color: var(--color-accent-deep);
  text-decoration: none;
}

h1,
h2,
h3 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

button {
  font-family: inherit;
  cursor: pointer;
}

::selection {
  background: var(--color-accent);
  color: #ffffff;
}

:focus-visible {
  outline: 2px solid var(--color-accent-deep);
  outline-offset: 3px;
  border-radius: 4px;
}

/* --------------------------------------------------------------------------
   3. Layout utilities
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding-block: clamp(4rem, 9vw, 7rem);
  position: relative;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-deep);
  color: #ffffff;
  font-weight: 600;
}

.skip-link:focus {
  top: 12px;
}

/* Section heading -------------------------------------------------------- */
.section-heading {
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

.section-heading--left {
  margin-inline: 0;
}

.section-heading__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-text);
  margin-bottom: 14px;
}

.section-heading__eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-accent-deep), var(--color-accent-text));
}

.section-heading__title {
  font-size: clamp(1.75rem, 4.5vw, 2.6rem);
  margin-bottom: 12px;
}

.section-heading__description {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.section-heading--center {
  text-align: center;
}

.section-heading--center .section-heading__eyebrow {
  justify-content: center;
}

/* --------------------------------------------------------------------------
   4. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.18s ease, box-shadow 0.18s ease,
    background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.btn--sm {
  padding: 10px 18px;
  font-size: 0.85rem;
}

.btn--md {
  padding: 13px 26px;
  font-size: 0.92rem;
}

.btn--lg {
  padding: 16px 32px;
  font-size: 1rem;
}

.btn--primary {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-accent-deep), var(--color-accent));
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

.btn--primary::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: -70%;
  width: 45%;
  background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.5), transparent);
  transform: skewX(-18deg);
  transition: left 0.55s ease;
  pointer-events: none;
}

.btn--primary:hover::after {
  left: 125%;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 45px -10px var(--color-accent-glow);
}

.btn--secondary {
  background: var(--color-surface);
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

.btn--secondary:hover {
  transform: translateY(-2px);
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-text);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
}

.btn--ghost:hover {
  color: var(--color-text);
}

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

/* --------------------------------------------------------------------------
   5. Status badges + tags
   -------------------------------------------------------------------------- */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 1px solid;
  background: var(--color-surface);
}

.status-badge__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
}

.status-badge--live {
  color: var(--color-live);
  border-color: rgba(5, 150, 105, 0.25);
  background: rgba(5, 150, 105, 0.08);
}

.status-badge--live .status-badge__dot {
  box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.18);
}

.status-badge--testing {
  color: var(--color-testing);
  border-color: rgba(147, 51, 234, 0.25);
  background: rgba(147, 51, 234, 0.08);
}

.status-badge--testing .status-badge__dot {
  box-shadow: 0 0 0 3px rgba(147, 51, 234, 0.16);
}

.status-badge--in-development {
  color: var(--color-development);
  border-color: rgba(37, 99, 235, 0.25);
  background: rgba(37, 99, 235, 0.08);
}

.status-badge--in-development .status-badge__dot {
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.16);
}

.status-badge--prototype {
  color: var(--color-prototype);
  border-color: rgba(217, 119, 6, 0.25);
  background: rgba(217, 119, 6, 0.08);
}

.status-badge--prototype .status-badge__dot {
  box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.16);
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 5px 11px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-size: 0.78rem;
  font-weight: 500;
  font-family: var(--font-mono);
}

/* --------------------------------------------------------------------------
   6. Header / Navbar
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--navbar-height);
  border-bottom: 1px solid transparent;
  background: rgba(246, 248, 251, 0.78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  border-bottom-color: var(--color-border);
}

.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
}

.site-logo__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-accent-deep), var(--color-accent));
  color: #ffffff;
  box-shadow: var(--shadow-glow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.site-logo:hover .site-logo__mark {
  transform: rotate(-8deg) scale(1.06);
  box-shadow: 0 12px 44px -10px var(--color-accent-glow);
}

.site-logo__word {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: 0.18em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 26px;
}

.site-nav__link {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  position: relative;
  transition: color 0.18s ease;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-accent-deep), var(--color-accent-text));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s ease;
}

.site-nav__link:hover {
  color: var(--color-text);
}

.site-nav__link:hover::after {
  transform: scaleX(1);
}

/* Hamburger toggle ------------------------------------------------------- */
.site-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  align-items: center;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.site-toggle__bar {
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text);
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.site-toggle.is-active .site-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-toggle.is-active .site-toggle__bar:nth-child(2) {
  opacity: 0;
}

.site-toggle.is-active .site-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------------------------------------------------------
   7. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  padding-block: clamp(4.5rem, 10vw, 8rem) clamp(5rem, 11vw, 9rem);
}

/* subtle grid + glow backdrop */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 90% 70% at 50% 0%, #000 30%, transparent 75%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  top: -220px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 620px;
  background: radial-gradient(ellipse at center, rgba(124, 140, 255, 0.16), transparent 65%);
  filter: blur(10px);
  pointer-events: none;
}

.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: clamp(2.5rem, 6vw, 5rem);
}

.hero__grid > * {
  min-width: 0;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 16px;
  border: 1px solid rgba(124, 140, 255, 0.35);
  border-radius: var(--radius-pill);
  background: rgba(124, 140, 255, 0.1);
  color: var(--color-accent-deep);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 26px;
}

.hero__eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent-deep);
  box-shadow: 0 0 12px var(--color-accent);
}

.hero__title {
  font-size: clamp(2.4rem, 6.4vw, 4.1rem);
  margin-bottom: 22px;
  max-width: 12ch;
}

.hero__title-accent {
  background-image: linear-gradient(120deg, var(--color-accent-deep), var(--color-accent-text), var(--color-accent-2), var(--color-accent-deep));
  background-size: 260% 260%;
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
  animation: gradientShift 7s ease-in-out infinite alternate;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

.hero__subtitle {
  color: var(--color-text-muted);
  font-size: clamp(1.02rem, 2vw, 1.18rem);
  max-width: 46ch;
  margin-bottom: 34px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 44px;
}

.hero__statuses {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.hero__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-faint);
  font-size: 0.85rem;
  font-weight: 600;
}

.hero__status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.hero__status-dot--prototype { background: var(--color-prototype); }
.hero__status-dot--development { background: var(--color-development); }
.hero__status-dot--testing { background: var(--color-testing); }
.hero__status-dot--live {
  background: var(--color-live);
  position: relative;
}

.hero__status-dot--live::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1px solid rgba(5, 150, 105, 0.6);
  animation: ping 2.2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes ping {
  70%, 100% {
    transform: scale(2.1);
    opacity: 0;
  }
}

/* Hero visual ------------------------------------------------------------ */
.hero__visual {
  position: relative;
}

.dev-ui {
  position: relative;
  padding: 18px;
}

.dev-ui__glow {
  position: absolute;
  inset: 8% -6% -6% 2%;
  background: radial-gradient(ellipse at 60% 40%,
      rgba(124, 140, 255, 0.28), rgba(34, 211, 238, 0.14) 45%, transparent 70%);
  filter: blur(28px);
  z-index: 0;
}

.browser {
  position: relative;
  z-index: 1;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.browser__bar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-2);
}

.browser__lights {
  display: flex;
  gap: 6px;
}

.browser__lights i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-text-faint);
}

.browser__lights i:nth-child(1) { background: #ff5f57; }
.browser__lights i:nth-child(2) { background: #febc2e; }
.browser__lights i:nth-child(3) { background: #28c840; }

.browser__url {
  flex: 1;
  max-width: 260px;
  margin-inline: auto;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-align: center;
}

.browser__window {
  display: grid;
  grid-template-columns: 52px 1fr;
  min-height: 320px;
}

.browser__sidebar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding-block: 18px;
  border-right: 1px solid var(--color-border);
  background: var(--color-surface-2);
}

.browser__logo {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-accent-deep), var(--color-accent));
  color: #ffffff;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.8rem;
  margin-bottom: 10px;
}

.browser__nav-item {
  width: 14px;
  height: 14px;
  border-radius: 5px;
  background: var(--color-border-strong);
}

.browser__nav-item.is-active {
  background: linear-gradient(135deg, var(--color-accent-deep), var(--color-accent-text));
}

.browser__main {
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

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

.browser__line {
  height: 9px;
  border-radius: 6px;
  background: var(--color-border-strong);
}

.browser__line.is-wide {
  width: 60%;
}

.browser__line.is-short {
  width: 38%;
  height: 7px;
  background: rgba(15, 23, 42, 0.1);
}

.browser__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.mini-card {
  height: 62px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  position: relative;
  overflow: hidden;
}

.mini-card::after {
  content: "";
  position: absolute;
  left: 12%;
  right: 12%;
  bottom: 12px;
  height: 7px;
  border-radius: 5px;
  background: var(--color-border-strong);
}

.mini-card--one::before {
  content: "";
  position: absolute;
  inset: 10px 12%;
  border-radius: 6px;
  background: linear-gradient(135deg, rgba(124, 140, 255, 0.28), rgba(124, 140, 255, 0.08));
}

.mini-card--two::before {
  content: "";
  position: absolute;
  inset: 10px 12%;
  border-radius: 6px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.3), rgba(34, 211, 238, 0.08));
}

.mini-card--three::before {
  content: "";
  position: absolute;
  inset: 10px 12%;
  border-radius: 6px;
  background: linear-gradient(135deg, rgba(147, 51, 234, 0.22), rgba(147, 51, 234, 0.06));
}

.code-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-2);
  overflow: hidden;
}

.code-card__bar {
  display: flex;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-border);
}

.code-card__bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border-strong);
}

.code-card__code {
  padding: 16px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.9;
  color: var(--color-text-muted);
  overflow-x: auto;
}

.code-k { color: #9333ea; }
.code-f { color: #4f46e5; }
.code-v { color: #0e7490; }
.code-p { color: #64748b; }
.code-s { color: #15803d; }
.code-c { color: #94a3b8; }

/* floating cards --------------------------------------------------------- */
.float-card {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-strong);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-card);
}

.float-card--top {
  top: -14px;
  right: -8px;
  animation: floaty 6s ease-in-out infinite;
}

.float-card--bottom {
  bottom: -18px;
  left: -6px;
  animation: floaty 6s ease-in-out 3s infinite;
}

.float-card__icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
}

.float-card__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.float-card__label {
  color: var(--color-text-faint);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.float-card__value {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
}

.float-card__value--live { color: var(--color-live); }
.float-card__value--testing { color: var(--color-testing); }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

/* --------------------------------------------------------------------------
   8. Projects
   -------------------------------------------------------------------------- */
.projects {
  background: var(--color-bg-soft);
  border-block: 1px solid var(--color-border);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.project-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 32%, rgba(124, 140, 255, 0.14) 46%, transparent 62%);
  transform: translateX(-110%);
  transition: transform 0.65s ease;
  pointer-events: none;
  z-index: 1;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(124, 140, 255, 0.5);
  box-shadow: var(--shadow-card);
}

.project-card:hover::after {
  transform: translateX(110%);
}

.project-card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-2);
}

.project-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card:hover .project-card__media img {
  transform: scale(1.04);
}

.project-card__placeholder {
  height: 100%;
  display: grid;
  place-items: center;
  color: var(--color-text-faint);
  font-family: var(--font-heading);
  font-weight: 600;
}

.project-card__status {
  position: absolute;
  top: 12px;
  left: 12px;
}

.project-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 20px 22px 22px;
}

.project-card__category {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-text);
  margin-bottom: 6px;
}

.project-card__title {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.project-card__description {
  color: var(--color-text-muted);
  font-size: 0.94rem;
  margin-bottom: 16px;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.project-card__footer {
  margin-top: auto;
}

/* --------------------------------------------------------------------------
   9. Featured project
   -------------------------------------------------------------------------- */
.featured__grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: clamp(2.5rem, 6vw, 5rem);
}

.featured__media {
  position: relative;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.featured__shot {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.featured__watermark {
  position: absolute;
  bottom: 12px;
  right: 16px;
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.2em;
  font-size: 0.78rem;
  color: rgba(15, 23, 42, 0.45);
}

.featured__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 18px;
}

.featured__name {
  font-size: clamp(1.6rem, 3.4vw, 2.3rem);
}

.featured__description {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 52ch;
}

.featured__note {
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  font-size: 0.92rem;
  line-height: 1.6;
}

.featured__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
}

.featured__meta-item dt {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-faint);
  font-weight: 600;
  margin-bottom: 4px;
}

.featured__meta-item dd {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
}

.featured__actions {
  margin-top: 4px;
}

/* --------------------------------------------------------------------------
   10. Process
   -------------------------------------------------------------------------- */
.process__list {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

/* connecting line behind the icons */
.process__list::before {
  content: "";
  position: absolute;
  top: 38px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg,
    var(--color-accent-deep),
    var(--color-accent-text),
    var(--color-accent-deep));
  opacity: 0.3;
}

.process__step {
  position: relative;
  text-align: center;
  padding: 0 10px;
}

.process__icon {
  position: relative;
  display: grid;
  place-items: center;
  width: 76px;
  height: 76px;
  margin-inline: auto;
  margin-bottom: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-strong);
  background: var(--color-surface);
  color: var(--color-accent-deep);
  z-index: 1;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.process__step:hover .process__icon {
  transform: translateY(-6px);
  border-color: rgba(124, 140, 255, 0.5);
  box-shadow: 0 16px 34px -16px var(--color-accent-glow);
}

.process__icon::after {
  content: "";
  position: absolute;
  inset: 12px;
  border-radius: var(--radius-md);
  background: radial-gradient(circle, var(--color-accent-soft), transparent 70%);
  z-index: -1;
}

.process__index {
  display: block;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.8rem;
  color: var(--color-accent-text);
  letter-spacing: 0.12em;
  margin-bottom: 6px;
}

.process__title {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.process__text {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  max-width: 26ch;
  margin-inline: auto;
}

/* --------------------------------------------------------------------------
   11. About
   -------------------------------------------------------------------------- */
.about__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: clamp(2.5rem, 6vw, 5rem);
}

.about__principles {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 30px;
}

.about__principle {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.about__principle:hover {
  border-color: rgba(124, 140, 255, 0.5);
  transform: translateX(4px);
}

.about__principle-icon {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
}

.about__principle-title {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.about__principle-text {
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.terminal {
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.terminal__bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-2);
}

.terminal__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border-strong);
}

.terminal__dot:nth-child(1) { background: #ff5f57; }
.terminal__dot:nth-child(2) { background: #febc2e; }
.terminal__dot:nth-child(3) { background: #28c840; }

.terminal__title {
  margin-left: 8px;
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  font-size: 0.74rem;
}

.terminal__body {
  padding: 22px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 2.1;
  color: var(--color-text-muted);
  overflow-x: auto;
}

/* --------------------------------------------------------------------------
   12. Technology stack
   -------------------------------------------------------------------------- */
.stack {
  background: var(--color-bg-soft);
  border-block: 1px solid var(--color-border);
}

.stack__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.stack__item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.stack__item:hover {
  transform: translateY(-4px);
  border-color: rgba(8, 145, 178, 0.5);
}

.stack__logo {
  position: relative;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: 0 8px 18px -12px rgba(15, 23, 42, 0.22);
  margin-bottom: 12px;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.stack__item:hover .stack__logo {
  transform: translateY(-4px) rotate(-5deg);
  border-color: var(--color-border-strong);
  box-shadow: 0 12px 24px -12px rgba(15, 23, 42, 0.28);
}

.stack__logo-letter {
  position: absolute;
  inset: 0;
  display: none;
  place-items: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text-faint);
}

.stack__logo--fallback .stack__logo-letter {
  display: grid;
}

.stack__logo img {
  position: relative;
  z-index: 1;
  width: 30px;
  height: 30px;
  object-fit: contain;
}

.stack__logo-custom {
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--color-accent-deep);
  background: var(--color-accent-soft);
  border: 1px solid rgba(124, 140, 255, 0.25);
  border-radius: 8px;
  padding: 4px 7px;
}

.stack__name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
}

.stack__desc {
  color: var(--color-text-muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   13. CTA
   -------------------------------------------------------------------------- */
.cta__box {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: clamp(2.8rem, 7vw, 5rem) clamp(1.5rem, 5vw, 4rem);
  border-radius: var(--radius-lg);
}

.cta__box > * {
  position: relative;
  z-index: 1;
}

/* rotating gradient border */
.cta__box::before {
  content: "";
  position: absolute;
  inset: -60%;
  background: conic-gradient(
    transparent 0deg 300deg,
    rgba(124, 140, 255, 0.9) 330deg,
    rgba(34, 211, 238, 0.9) 348deg,
    transparent 360deg
  );
  animation: ctaSpin 8s linear infinite;
}

.cta__box::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: calc(var(--radius-lg) - 1px);
  background: linear-gradient(160deg, var(--color-surface), var(--color-surface-2));
}

@keyframes ctaSpin {
  to {
    transform: rotate(360deg);
  }
}

.cta__glow {
  position: absolute;
  top: -140px;
  left: 50%;
  width: 640px;
  height: 320px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(124, 140, 255, 0.2), transparent 65%);
  animation: ctaGlow 9s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: 1;
}

@keyframes ctaGlow {
  0% {
    transform: translateX(-50%) translateY(0) scale(1);
    opacity: 0.7;
  }
  100% {
    transform: translateX(-50%) translateY(-22px) scale(1.15);
    opacity: 1;
  }
}

.cta__title {
  position: relative;
  font-size: clamp(1.7rem, 4.2vw, 2.5rem);
  margin-bottom: 14px;
}

.cta__text {
  position: relative;
  color: var(--color-text-muted);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

.cta__actions {
  position: relative;
}

/* --------------------------------------------------------------------------
    13b. Contact
   -------------------------------------------------------------------------- */
.contact {
  background: var(--color-bg-soft);
  border-top: 1px solid var(--color-border);
}

.contact__inner {
  max-width: 560px;
  margin-inline: auto;
}

.contact-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  padding: 40px 28px 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  color: var(--color-text);
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.contact-card::after {
  content: "";
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 340px;
  height: 260px;
  background: radial-gradient(ellipse at center, rgba(124, 140, 255, 0.18), transparent 65%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.contact-card:hover {
  transform: translateY(-6px);
  border-color: rgba(124, 140, 255, 0.5);
  box-shadow: var(--shadow-card);
}

.contact-card:hover::after {
  opacity: 1;
}

.contact-card__icon {
  position: relative;
  display: grid;
  place-items: center;
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
  margin-bottom: 10px;
}

.contact-card:hover .contact-card__icon {
  transform: scale(1.06) rotate(-4deg);
}

.contact-card__icon svg {
  transition: transform 0.25s ease;
}

.contact-card__icon::after {
  content: "";
  position: absolute;
  inset: -6px;
  border-radius: 20px;
  border: 1px solid rgba(124, 140, 255, 0.5);
  animation: pingRing 2.6s ease-out infinite;
}

@keyframes pingRing {
  0% {
    transform: scale(1);
    opacity: 0.7;
  }
  70%, 100% {
    transform: scale(1.4);
    opacity: 0;
  }
}

.contact-card__label {
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-text);
}

.contact-card__value {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.12rem;
}

.contact-card__hint {
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

/* --------------------------------------------------------------------------
    14. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-soft);
  padding-block: 48px 26px;
}

.site-footer__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--color-border);
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.site-footer__tag {
  color: var(--color-text-faint);
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.site-footer__menu {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
}

.site-footer__link {
  color: var(--color-text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.18s ease;
}

.site-footer__link:hover {
  color: var(--color-accent-deep);
}

.site-footer__bottom {
  padding-top: 24px;
}

.site-footer__bottom p {
  color: var(--color-text-faint);
  font-size: 0.85rem;
}

/* --------------------------------------------------------------------------
   14b. Color enrichment — extra accents, gradients & section tints
   -------------------------------------------------------------------------- */
:root {
  --color-violet: #a855f7;
  --color-pink: #f472b6;
  --color-amber: #f59e0b;
  --color-green: #22c55e;

  --gradient-brand: linear-gradient(135deg, #4f46e5, #7c8cff 55%, #22d3ee);
  --gradient-cyan: linear-gradient(135deg, #0891b2, #22d3ee);
  --gradient-violet: linear-gradient(135deg, #7c3aed, #a855f7);
  --gradient-pink: linear-gradient(135deg, #db2777, #f472b6);
  --gradient-amber: linear-gradient(135deg, #ea580c, #f59e0b);
  --gradient-green: linear-gradient(135deg, #059669, #22c55e);
}

/* Page-wide soft gradient wash */
body {
  background: linear-gradient(180deg, #f6f8fb 0%, #eef4ff 45%, #f9f1ff 100%);
}

.site-logo__mark {
  background: var(--gradient-brand);
}

.btn--primary {
  background-image: var(--gradient-brand);
}

/* Navbar: gradient hairline on scroll */
.site-header {
  background: linear-gradient(180deg, rgba(246, 248, 251, 0.9), rgba(238, 244, 255, 0.7));
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(124, 140, 255, 0.45), rgba(34, 211, 238, 0.45), transparent);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.site-header.is-scrolled::after {
  opacity: 1;
}

/* Section eyebrow: gradient text + richer bar */
.section-heading__eyebrow {
  background: linear-gradient(90deg, #4f46e5, #0891b2);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 800;
}

.section-heading__eyebrow::before {
  background: linear-gradient(90deg, var(--color-accent-deep), var(--color-accent), var(--color-accent-2));
  box-shadow: 0 0 12px rgba(124, 140, 255, 0.55);
}

/* Hero: livelier backdrop, chip, browser mockup */
.hero::before {
  background-image:
    linear-gradient(rgba(79, 70, 229, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 70, 229, 0.07) 1px, transparent 1px);
}

.hero::after {
  width: 980px;
  height: 700px;
  background:
    radial-gradient(ellipse at 30% 40%, rgba(124, 140, 255, 0.32), transparent 62%),
    radial-gradient(ellipse at 72% 35%, rgba(34, 211, 238, 0.26), transparent 60%),
    radial-gradient(ellipse at 50% 88%, rgba(168, 85, 247, 0.2), transparent 62%);
}

.hero__eyebrow {
  border: 1px solid transparent;
  background:
    linear-gradient(#ffffff, #ffffff) padding-box,
    var(--gradient-brand) border-box;
  box-shadow: 0 10px 28px -14px var(--color-accent-glow);
  color: var(--color-accent-deep);
  font-weight: 700;
}

.hero__eyebrow::before {
  background: var(--gradient-brand);
  box-shadow: 0 0 10px var(--color-accent-2);
}

.hero__title-accent {
  background-image: linear-gradient(120deg, #4f46e5, #7c8cff, #22d3ee, #a855f7, #4f46e5);
}

.browser::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-deep), var(--color-accent-2), var(--color-violet));
  z-index: 3;
}

.browser__sidebar {
  background: linear-gradient(180deg, rgba(124, 140, 255, 0.1), rgba(34, 211, 238, 0.08) 60%, rgba(168, 85, 247, 0.08));
}

.browser__url {
  background: rgba(124, 140, 255, 0.08);
  border-color: rgba(124, 140, 255, 0.25);
  color: var(--color-accent-deep);
  font-weight: 600;
}

.browser__logo {
  background: var(--gradient-brand);
}

.dev-ui__glow {
  background:
    radial-gradient(ellipse at 40% 35%, rgba(124, 140, 255, 0.34), transparent 60%),
    radial-gradient(ellipse at 82% 72%, rgba(34, 211, 238, 0.24), transparent 55%),
    radial-gradient(ellipse at 18% 88%, rgba(168, 85, 247, 0.18), transparent 55%);
}

.float-card--top .float-card__icon {
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.18), rgba(34, 211, 238, 0.14));
  color: var(--color-live);
}

.float-card--bottom .float-card__icon {
  background: linear-gradient(135deg, rgba(147, 51, 234, 0.18), rgba(244, 114, 182, 0.14));
  color: var(--color-testing);
}

/* Projects: tinted section + colorful cards */
.projects {
  background: linear-gradient(180deg, #eef3ff 0%, #eef7f8 100%);
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
  z-index: 2;
}

.project-card:hover {
  border-color: rgba(124, 140, 255, 0.45);
  box-shadow: 0 24px 50px -26px rgba(124, 140, 255, 0.55);
}

.project-card__category {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  background: var(--color-accent-soft);
  color: var(--color-accent-deep);
}

.tag {
  background: linear-gradient(180deg, #ffffff, #f3f6ff);
  border-color: rgba(124, 140, 255, 0.25);
  color: #475569;
}

.tag:hover {
  border-color: rgba(124, 140, 255, 0.55);
  color: var(--color-accent-deep);
}

/* Process: each step gets its own color */
.process__list::before {
  opacity: 0.55;
}

.process__step:nth-child(1) .process__icon {
  background: var(--gradient-brand);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 16px 34px -18px rgba(79, 70, 229, 0.55);
}

.process__step:nth-child(2) .process__icon {
  background: var(--gradient-cyan);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 16px 34px -18px rgba(8, 145, 178, 0.5);
}

.process__step:nth-child(3) .process__icon {
  background: var(--gradient-violet);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 16px 34px -18px rgba(124, 58, 237, 0.5);
}

.process__step:nth-child(4) .process__icon {
  background: var(--gradient-amber);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 16px 34px -18px rgba(234, 88, 12, 0.5);
}

.process__step:nth-child(1) .process__icon::after,
.process__step:nth-child(2) .process__icon::after,
.process__step:nth-child(3) .process__icon::after,
.process__step:nth-child(4) .process__icon::after {
  display: none;
}

.process__step:nth-child(1) .process__index { color: #4f46e5; }
.process__step:nth-child(2) .process__index { color: #0e7490; }
.process__step:nth-child(3) .process__index { color: #7c3aed; }
.process__step:nth-child(4) .process__index { color: #b45309; }

.process__step:nth-child(1):hover .process__icon { box-shadow: 0 20px 44px -20px rgba(79, 70, 229, 0.65); }
.process__step:nth-child(2):hover .process__icon { box-shadow: 0 20px 44px -20px rgba(8, 145, 178, 0.6); }
.process__step:nth-child(3):hover .process__icon { box-shadow: 0 20px 44px -20px rgba(124, 58, 237, 0.6); }
.process__step:nth-child(4):hover .process__icon { box-shadow: 0 20px 44px -20px rgba(234, 88, 12, 0.6); }

/* About: colorful principles + dark terminal */
.about__principle:nth-child(1) .about__principle-icon {
  background: var(--gradient-brand);
  color: #ffffff;
  border-color: transparent;
}

.about__principle:nth-child(2) .about__principle-icon {
  background: var(--gradient-cyan);
  color: #ffffff;
  border-color: transparent;
}

.about__principle:nth-child(3) .about__principle-icon {
  background: var(--gradient-violet);
  color: #ffffff;
  border-color: transparent;
}

.about__visual {
  position: relative;
}

.about__visual::before {
  content: "";
  position: absolute;
  inset: -10% -4%;
  background:
    radial-gradient(ellipse at 30% 15%, rgba(124, 140, 255, 0.3), transparent 60%),
    radial-gradient(ellipse at 85% 80%, rgba(34, 211, 238, 0.24), transparent 55%);
  filter: blur(28px);
  pointer-events: none;
  z-index: 0;
}

.terminal {
  position: relative;
  z-index: 1;
  background: #0f172a;
  border-color: rgba(124, 140, 255, 0.28);
  box-shadow: 0 30px 70px -30px rgba(79, 70, 229, 0.5);
}

.terminal__bar {
  background: #1e293b;
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

.terminal__title { color: #94a3b8; }
.terminal__body { color: #cbd5e1; }
.terminal .code-c { color: #64748b; }
.terminal .code-k { color: #c084fc; }
.terminal .code-f { color: #818cf8; }
.terminal .code-s { color: #4ade80; }
.terminal .code-p { color: #94a3b8; }

/* Stack: tinted tiles */
.stack {
  background: linear-gradient(180deg, #f4efff 0%, #eef6fc 100%);
}

.stack__item:nth-child(4n+1) .stack__logo { background: linear-gradient(135deg, rgba(124, 140, 255, 0.18), rgba(124, 140, 255, 0.05)); }
.stack__item:nth-child(4n+2) .stack__logo { background: linear-gradient(135deg, rgba(34, 211, 238, 0.18), rgba(34, 211, 238, 0.05)); }
.stack__item:nth-child(4n+3) .stack__logo { background: linear-gradient(135deg, rgba(168, 85, 247, 0.18), rgba(168, 85, 247, 0.05)); }
.stack__item:nth-child(4n+4) .stack__logo { background: linear-gradient(135deg, rgba(244, 114, 182, 0.18), rgba(244, 114, 182, 0.05)); }

.stack__item:nth-child(4n+1):hover .stack__logo { border-color: rgba(124, 140, 255, 0.5); }
.stack__item:nth-child(4n+2):hover .stack__logo { border-color: rgba(34, 211, 238, 0.5); }
.stack__item:nth-child(4n+3):hover .stack__logo { border-color: rgba(168, 85, 247, 0.5); }
.stack__item:nth-child(4n+4):hover .stack__logo { border-color: rgba(244, 114, 182, 0.5); }

/* Contact: colorful */
.contact {
  background: linear-gradient(180deg, #fff1f7 0%, #f7f0ff 100%);
}

.contact-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
}

.contact-card__icon {
  background: var(--gradient-brand);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.35);
  box-shadow: 0 14px 34px -18px rgba(79, 70, 229, 0.6);
}

.contact-card__icon::after {
  border-color: rgba(124, 140, 255, 0.6);
}

/* Footer: gradient hairline + tinted bg */
.site-footer {
  position: relative;
  border-top: none;
  background: linear-gradient(180deg, #eef2f7 0%, #f3f0ff 100%);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-deep), var(--color-accent-2), var(--color-violet));
  opacity: 0.55;
}

.site-footer__link:hover {
  color: var(--color-accent-2);
}

/* --------------------------------------------------------------------------
   15. Reveal animation
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal--delay-1 { transition-delay: 0.14s; }
.reveal--delay-2 { transition-delay: 0.28s; }

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* No-JS fallback: never hide content when JavaScript is unavailable */
noscript .reveal,
html.no-js .reveal {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------------------------------------
   16. Responsive
   -------------------------------------------------------------------------- */

/* Tablet / small laptop */
@media (max-width: 1024px) {
  .projects__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .featured__grid,
  .about__grid,
  .hero__grid {
    grid-template-columns: 1fr;
  }

  .hero::after {
    width: 640px;
  }

  .process__list {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 44px;
  }

  .process__list::before {
    display: none;
  }

  .stack__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact__inner {
    max-width: 100%;
  }

  .hero__visual {
    max-width: 620px;
    margin-inline: auto;
  }
}

/* Mobile nav + single column */
@media (max-width: 900px) {
  .site-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 18px 24px 28px;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
    overflow-y: auto;
    max-height: calc(100dvh - var(--navbar-height));
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    margin-bottom: 18px;
  }

  .site-nav__item {
    width: 100%;
  }

  .site-nav__link {
    display: block;
    width: 100%;
    padding: 12px 4px;
    font-size: 1.05rem;
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__cta {
    padding-top: 18px;
    border-top: 1px solid var(--color-border);
  }

  .site-nav__cta .btn {
    width: 100%;
  }
}

/* Mobile */
@media (max-width: 640px) {
  .container {
    padding-inline: 20px;
  }

  .hero {
    padding-top: 3.5rem;
  }

  .hero__actions .btn {
    flex: 1 1 auto;
    width: 100%;
  }

  .hero__statuses {
    gap: 12px;
  }

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

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

  .process__list {
    grid-template-columns: 1fr;
    row-gap: 40px;
  }

  .featured__grid {
    gap: 2rem;
  }

  .featured__meta {
    gap: 18px;
  }

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

  .browser__sidebar {
    display: none;
  }

  .float-card {
    display: none;
  }

  .site-footer__top {
    flex-direction: column;
  }
}

/* --------------------------------------------------------------------------
   17. Reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .reveal--delay-1,
  .reveal--delay-2 {
    opacity: 1;
    transform: none;
    transition: none;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}