/* =============================================================
   DESIGN TOKENS
   ============================================================= */
:root {
  /* ── Colors ──────────────────────────────────────────────── */
  --clr-bg:           #0F172A;
  --clr-bg-2:         #1E293B;
  --clr-bg-3:         #334155;
  --clr-text:         #E2E8F0;
  --clr-muted:        #94A3B8;
  --clr-subtle:       #64748B;
  --clr-primary:      linear-gradient(135deg, #3b82f6 0%, #9b5de5 100%);
  --clr-primary-dark: linear-gradient(135deg, #1E40AF 0%, #5B21B6 100%);
  --clr-accent:       #22C55E;
  --clr-primary-glow: rgba(37, 99, 235, 0.12);
  --clr-border:       rgba(255, 255, 255, 0.06);
  --clr-border-2:     rgba(255, 255, 255, 0.10);
  --clr-border-primary: rgba(37, 99, 235, 0.5);

  /* ── Typography ──────────────────────────────────────────── */
  --font: 'Roboto Mono', 'Courier New', monospace;
  --font-heading: 'Syne', sans-serif;

  /* ── Spacing (8 px base) ─────────────────────────────────── */
  --s1:  0.5rem;    /*  8px */
  --s2:  1rem;      /* 16px */
  --s3:  1.5rem;    /* 24px */
  --s4:  2rem;      /* 32px */
  --s5:  2.5rem;    /* 40px */
  --s6:  3rem;      /* 48px */
  --s8:  4rem;      /* 64px */
  --s10: 5rem;      /* 80px */
  --s12: 6rem;      /* 96px */
  --s16: 8rem;      /* 128px */
  --s20: 10rem;     /* 160px */

  /* ── Radius ──────────────────────────────────────────────── */
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 16px;
  --r-xl: 24px;

  /* ── Transitions ─────────────────────────────────────────── */
  --t-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --t-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --t-slow: 600ms cubic-bezier(0.4, 0, 0.2, 1);

  /* ── Layout ──────────────────────────────────────────────── */
  --max-w:    1200px;
  --pad:      clamp(1rem, 5vw, 1.5rem);
  --header-h: 72px;
}


/* =============================================================
   BASE
   ============================================================= */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  overflow-x: hidden;
}

#particles {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

header, main, footer {
  position: relative;
  z-index: 1;
}

::selection {
  background: var(--clr-primary);
  color: var(--clr-text);
}





/* =============================================================
   LAYOUT
   ============================================================= */
.container {
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--pad);
  width: 100%;
}

.section {
  padding-block: var(--s16);
  position: relative;
}

.section + .section::before,
.section + footer::before,
main > footer::before {
  content: '';
  display: block;
  position: absolute;
  top: 0;
  left: 3rem;
  right: 3rem;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(37, 99, 235, 0.2) 20%,
    rgba(99, 102, 241, 0.7) 50%,
    rgba(37, 99, 235, 0.2) 80%,
    transparent 100%
  );
  mask-image: linear-gradient(
    90deg,
    transparent 0%,
    black 20%,
    black 80%,
    transparent 100%
  );
}


/* =============================================================
   TYPOGRAPHY UTILITIES
   ============================================================= */
.label {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background: var(--clr-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--s3);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--clr-text);
}

.section-header {
  margin-bottom: var(--s10);
}


/* =============================================================
   BUTTONS
   ============================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s1);
  padding: 0.875rem 1.875rem;
  border-radius: var(--r-md);
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
  transition:
    background  var(--t-base),
    border-color var(--t-base),
    color        var(--t-base),
    transform    var(--t-base),
    box-shadow   var(--t-base);
}

/* Primary — solid red */
.btn--primary {
  background: var(--clr-primary);
  color: var(--clr-text);
  border: 1px solid var(--clr-primary);
}
.btn--primary:hover {
  background: var(--clr-primary-dark);
  border-color: var(--clr-primary-dark);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 32px rgba(37, 99, 235, 0.4);
}

/* Ghost — outlined */
.btn--ghost {
  background: transparent;
  color: var(--clr-text);
  border: 1px solid var(--clr-border-2);
}
.btn--ghost:hover {
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 24px rgba(249, 250, 251, 0.05);
}

/* Full width */
.btn--full { width: 100%; }


/* =============================================================
   HEADER
   ============================================================= */
.header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 1000;
  height: var(--header-h);
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: 2px solid transparent;
  transition:
    background       var(--t-slow),
    border-color     var(--t-slow),
    backdrop-filter  var(--t-slow);
}

.header.scrolled {
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: rgba(37, 99, 235);
}

.header__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: var(--s6);
}

/* Desktop navs */
.header__nav {
  display: flex;
  align-items: center;
  gap: var(--s5);
}

.header__nav--center {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.header__nav--right {
  flex-shrink: 0;
  margin-left: auto;
}

@media (max-width: 767px) {
  .header__nav { display: none; }
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--clr-muted);
  position: relative;
  transition: color var(--t-base);
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: -4px;
  width: 0; height: 1px;
  background: var(--clr-primary);
  transition: width var(--t-base);
}
.nav-link:hover,
.nav-link.is-active          { color: var(--clr-text); }
.nav-link:hover::after,
.nav-link.is-active::after   { width: 100%; }

.nav-link--cta {
  background: var(--clr-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  border: 1px solid var(--clr-primary);
}
.nav-link--cta:hover {
  background: var(--clr-primary-dark);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-link--cta::after        { background: var(--clr-primary); }

/* Logo */
.logo {
  font-size: 1.125rem;
  font-weight: 900;
  letter-spacing: -0.06em;
  color: var(--clr-text);
  position: relative;
  display: inline-block;
  transition: opacity var(--t-base), transform var(--t-base);
}
.logo:hover {
  transform: translateX(6px);

}
.logo img {
  width: 180px;
  height: 180px;
  margin-top: 2px;
}
.logo::before {
  content: '';
  position: absolute;
  inset: -8px -12px;
  border: 1px solid rgba(37, 99, 235, 0);
  border-radius: var(--r-sm);
  transition: border-color var(--t-base);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--r-md);
  cursor: pointer;
  transition: background var(--t-base), border-color var(--t-base);
}
@media (max-width: 767px) {
  .hamburger { display: flex; }
}

.hamburger:hover {
  background: var(--clr-border-2);
  border-color: var(--clr-border-primary);
}

.hamburger__line {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--clr-text);
  border-radius: 2px;
  transform-origin: center;
  transition: transform var(--t-base), opacity var(--t-base);
}
.hamburger.is-open .hamburger__line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.hamburger.is-open .hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger.is-open .hamburger__line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--s4);
  background: rgba(11, 17, 32, 0.98);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--clr-border-primary);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition:
    max-height 0.55s cubic-bezier(0.4, 0, 0.2, 1),
    opacity    0.35s ease,
    padding    0.45s ease;
}
.mobile-menu.is-open {
  max-height: 520px;
  opacity: 1;
  padding: var(--s8) var(--pad);
}

.mobile-menu__link {
  font-size: 1.625rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--clr-muted);
  transition: color var(--t-base);
}
.mobile-menu__link:hover { color: var(--clr-text); }


/* =============================================================
    HERO
   ============================================================= */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--header-h);
  padding-bottom: var(--s10);
  overflow: hidden;
}

/* Background layers */
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 50%, black 40%, transparent 100%);
}

.hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
}
.hero__glow--1 {
  width: min(60vw, 700px);
  height: min(60vw, 700px);
  top: 50%; left: 50%;
  transform: translate(-50%, -60%);
  background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, rgba(124, 58, 237, 0.1) 70%);
  animation: glow1 7s ease-in-out infinite alternate;
}
.hero__glow--2 {
  width: min(35vw, 420px);
  height: min(35vw, 420px);
  bottom: 5%; right: 5%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.10) 0%, rgba(124, 58, 237, 0.2) 70%);
  animation: glow2 10s ease-in-out infinite alternate-reverse;
}

@keyframes glow1 {
  from { transform: translate(-50%, -60%) scale(1); }
  to   { transform: translate(-50%, -60%) scale(1.22); }
}
@keyframes glow2 {
  from { transform: scale(1); }
  to   { transform: scale(1.35); }
}

/* Content */
.hero .container {
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero__content {
  max-width: 90%;
  padding-block: var(--s8);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 7.5vw, 7rem);
  font-weight: 900;
  line-height: 1.03;
  letter-spacing: -0.045em;
  color: var(--clr-text);
  margin-bottom: var(--s5);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeUp 0.9s ease 0.35s forwards;
}

.hero__title-em {
  font-style: normal;
  background: var(--clr-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__sub {
  font-size: clamp(1rem, 2vw, 1rem);
  font-weight: 400;
  line-height: 1.75;
  color: var(--clr-muted);
  max-width: 70%;
  margin-bottom: var(--s8);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s ease 0.5s forwards;
}

.hero__sub-br { display: none; }
@media (min-width: 480px) { .hero__sub-br { display: block; } }

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--s3);
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s ease 0.65s forwards;
}


@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}
@keyframes scrollPulse {
  0%   { transform: translateX(-100%); }
  45%  { transform: translateX(100%); }
  100% { transform: translateX(100%); }
}


/* =============================================================
   ABOUT
   ============================================================= */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 8vw, 8rem);
  align-items: start;
}

.about__text {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--clr-muted);
  margin-bottom: var(--s4);
}
.about__text:last-of-type { margin-bottom: 0; }

/* =============================================================
   TAG CHIPS
   ============================================================= */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s1);
  margin-top: var(--s5);
}

.tag {
  padding: 0.375rem 0.875rem;
  background: var(--clr-bg-3);
  border: 1px solid var(--clr-border-2);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--clr-muted);
}


/* =============================================================
   EXPERTISE / CARDS
   ============================================================= */


.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s3);
}

.card {
  position: relative;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-lg);
  padding: var(--s8) var(--s6) var(--s6);
  overflow: hidden;
  transition:
    border-color 500ms cubic-bezier(0.34, 1.56, 0.64, 1),
    transform    500ms cubic-bezier(0.34, 1.56, 0.64, 1),
    box-shadow   500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.tilt-card {
  transform-style: preserve-3d;
  will-change: transform;
  transition:
    border-color var(--t-base),
    box-shadow   var(--t-base);
}

.tilt-card.reveal,
.tilt-card.reveal.is-visible {
  transition:
    border-color var(--t-base),
    box-shadow   var(--t-base),
    opacity      var(--t-slow);
}

/* Top shimmer line */
.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--clr-primary) 50%, transparent 100%);
  opacity: 0;
  transition: opacity var(--t-base);
}

.card:hover {
  border-color: var(--clr-border-primary);
  /* transform: translateY(-6px); */
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
}
.tilt-card:hover {
  transform: none;
}
.card:hover::before { opacity: 1; }

.card__num {
  display: block;
  font-size: 4rem;
  font-weight: 900;
  letter-spacing: -0.06em;
  background: var(--clr-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--s4);
  font-variant-numeric: tabular-nums;
}

.card__title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.25;
  color: var(--clr-text);
  margin-bottom: var(--s3);
}

.card__text {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--clr-muted);
}

/* Bottom sweep line */
.card__line {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--clr-primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}
.card:hover .card__line { transform: scaleX(1); }


/* =============================================================
   DIFFERENCE
   ============================================================= */

.difference__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s8);
}

.difference__item {
  display: flex;
  flex-direction: column;
  gap: var(--s4);
}

.difference__label {
  text-align: center;
}

.difference__label h3 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--clr-text);
  margin: 0;
}

.difference__labels {
  display: none;
}

.difference__card {
  border-radius: var(--r-xl);
  padding: var(--s5);
  overflow: hidden;
  transition:
    box-shadow   var(--t-base),
    transform    var(--t-base);
}

.difference__card--other {
  background: rgb(31, 49, 75);
  box-shadow: inset 0 0 0 7px rgba(255, 255, 255, 0.15);
}

.difference__card--other li {
  margin-bottom: var(--s2);
  position: relative;
  padding-left: var(--s3);
  line-height: 1.65;
}
.difference__card--other li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--clr-accent);
}

.difference__card--you {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.3) 0%, rgba(124, 58, 237, 0.5) 100%);
  box-shadow: inset 0 0 0 7px rgba(255, 255, 255, 0.15);
}

.difference__card--you li {
  color: var(--clr-text);
  margin-bottom: var(--s2);
  position: relative;
  padding-left: var(--s3);
  line-height: 1.65;
}

.difference__card--you li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--clr-accent);
  font-weight: 700;
}


/* =============================================================
   WORKS / PORTFOLIO
   ============================================================= */
.works-carousel-wrapper {
  overflow-x: auto;
  overflow-y: hidden;
  width: 100%;
  margin-top: var(--s8);
  padding-right: 3rem;
  cursor: grab;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.works-carousel-wrapper::-webkit-scrollbar {
  display: none;
}
.works-carousel-wrapper.is-dragging {
  cursor: grabbing;
  user-select: none;
}

.works-carousel {
  display: flex;
  gap: var(--s6);
  padding: 2rem var(--pad);
}

.works-carousel:hover {
  animation-play-state: paused;
}

.work-card {
  flex: 0 0 clamp(280px, 35vw, 420px);
  position: relative;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  transition:
    border-color var(--t-base),
    transform    var(--t-base),
    box-shadow   var(--t-base);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

/* Top shimmer line */
.work-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--clr-primary) 50%, transparent 100%);
  opacity: 0;
  transition: opacity var(--t-base);
  z-index: 1;
}

/* Bottom sweep line */
.work-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--clr-primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
}

.work-card:hover {
  border-color: var(--clr-border-primary);
  transform: translateY(-6px);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
}
.work-card:hover::before { opacity: 1; }
.work-card:hover::after  { transform: scaleX(1); }

.work-card__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  transition: transform var(--t-base);
}

.work-card:hover .work-card__image {
  transform: scale(1.05);
}

.work-card__content {
  padding: var(--s4);
  backdrop-filter: blur(8px);
}

.work-card__title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: var(--s1);
}

.work-card__text {
  font-size: 0.875rem;
  color: var(--clr-muted);
}

@keyframes scroll-left {
  0%, 100% {
    transform: translateX(0);
  }
  99.5% {
    transform: translateX(-50%);
  }
}

/* =============================================================
   PROCESS
   ============================================================= */


.process__track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s5);
  position: relative;
}

/* Connecting line */
.process__track::before {
  content: '';
  position: absolute;
  top: 1.5rem; /* centre of the step number badge */
  left: calc(var(--s5) / 2);
  right: calc(var(--s5) / 2);
  height: 1px;
  background: linear-gradient(
    90deg,
    var(--clr-border-primary),
    rgba(37, 99, 235),
    var(--clr-border-primary)
  );
  z-index: 0;
}

.process__step {
  position: relative;
  z-index: 1;
}

.process__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border: 1px solid var(--clr-border-primary);
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--clr-accent);
  margin-bottom: var(--s4);
}

.process__step-title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: var(--s2);
  color: var(--clr-text);
}

.process__step-text {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--clr-muted);
}



/* =============================================================
   CONTACT
   ============================================================= */

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: clamp(2rem, 8vw, 8rem);
  align-items: start;
}

.contact__sub {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--clr-muted);
  margin-top: var(--s4);
  margin-bottom: var(--s6);
}

.contact__links { margin-top: var(--s6); }

.contact__link {
  font-size: 1rem;
  font-weight: 500;
  color: var(--clr-muted);
  position: relative;
  display: inline-block;
  transition: color var(--t-base);
}
.contact__link::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 1px;
  background: var(--clr-accent);
  transition: width var(--t-base);
}
.contact__link:hover             { color: var(--clr-text); }
.contact__link:hover::after      { width: 100%; }

/* Form */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--s3);
}

.form-group { position: relative; }

.form-input {
  width: 100%;
  background: var(--clr-bg-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-md);
  padding: 1.625rem 1rem 0.625rem;
  color: var(--clr-text);
  font-size: 1rem;
  outline: none;
  transition:
    border-color var(--t-base),
    box-shadow   var(--t-base);
  appearance: none;
}
.form-input:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px var(--clr-primary-glow);
}

.form-textarea {
  min-height: 150px;
  line-height: 1.65;
  resize: vertical;
}

/* Floating label */
.form-label {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.9375rem;
  color: var(--clr-muted);
  pointer-events: none;
  transition:
    top          var(--t-base),
    transform    var(--t-base),
    font-size    var(--t-base),
    color        var(--t-base),
    font-weight  var(--t-base),
    letter-spacing var(--t-base);
}
/* Textarea label — anchor to top */
.form-textarea ~ .form-label {
  top: 1.25rem;
  transform: none;
}

/* Floated state (focus / has value) */
.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
  top: 0.55rem;
  transform: none;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-accent);
}


/* =============================================================
   FOOTER
   ============================================================= */
.footer {
  padding-block: var(--s6);
  position: relative;
}

.footer::before {
  content: '';
  display: block;
  position: absolute;
  top: 0;
  left: 3rem;
  right: 3rem;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(37, 99, 235, 0.2) 20%,
    rgba(99, 102, 241, 0.7) 50%,
    rgba(37, 99, 235, 0.2) 80%,
    transparent 100%
  );
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s4);
}

.footer__logo {
  font-size: 1.125rem;
  font-weight: 900;
  letter-spacing: -0.06em;
  color: var(--clr-text);
}

.footer__copy {
  font-size: 0.8125rem;
  color: var(--clr-subtle);
}

.footer__nav { display: flex; gap: var(--s4); }

.footer__link {
  font-size: 0.8125rem;
  color: var(--clr-subtle);
  transition: color var(--t-base);
}
.footer__link:hover { color: var(--clr-text); }


/* =============================================================
   SCROLL REVEAL
   ============================================================= */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition:
    opacity   0.85s cubic-bezier(0.4, 0, 0.2, 1),
    transform 0.85s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}


/* =============================================================
   RESPONSIVE
   ============================================================= */

/* Tablet (≤ 900px) */
@media (max-width: 900px) {
  .cards-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin-inline: auto;
  }

  .difference__grid {
    grid-template-columns: 1fr;
    gap: var(--s6);
  }

  .process__track {
    grid-template-columns: 1fr 1fr;
    gap: var(--s6);
  }
  .process__track::before { display: none; }

  .works-carousel {
    gap: var(--s4);
    animation-duration: 30s;
  }

  .work-card {
    flex: 0 0 clamp(240px, 45vw, 360px);
  }
}

/* Mobile large (≤ 767px) */
@media (max-width: 767px) {
  :root {
    --header-h: 64px;
  }

  .section { padding-block: var(--s8); }

  .about__grid,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--s3);
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
    gap: var(--s3);
  }

  .hero__title {
    font-size: clamp(2rem, 5vw, 3.5rem);
  }

  .section-title {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
  }

  .card__num {
    font-size: 3rem;
  }

  .card__title {
    font-size: 1rem;
  }

  .form-input {
    padding: 1.25rem 0.75rem 0.5rem;
    font-size: 16px;
  }

  .contact__sub {
    font-size: 1rem;
  }

  .works-carousel {
    gap: var(--s3);
    animation-duration: 25s;
  }

  .work-card {
    flex: 0 0 clamp(200px, 60vw, 300px);
  }
}

/* Mobile small (≤ 540px) */
@media (max-width: 540px) {
  :root {
    --pad:  clamp(0.75rem, 4vw, 1.25rem);
    --s5:  1.5rem;
    --s6:  2rem;
    --s8:  2.5rem;
  }

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

  .works-carousel {
    gap: var(--s2);
    animation-duration: 20s;
  }

  .work-card {
    flex: 0 0 clamp(160px, 75vw, 280px);
  }

  .hero__actions {
    flex-direction: column;
    align-items: stretch;
    gap: var(--s2);
  }
  .hero__actions .btn { 
    text-align: center;
    font-size: 0.875rem;
    padding: 0.75rem 1.5rem;
  }

  .hero__title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--s4);
  }

  .hero__sub {
    font-size: 0.9375rem;
  }

  .hero {
    padding-bottom: var(--s6);
  }

  .section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
  }

  .label {
    font-size: 0.625rem;
  }

  .card {
    padding: var(--s6) var(--s4) var(--s4);
  }

  .card__num {
    font-size: 3rem;
    margin-bottom: var(--s3);
  }

  .card__title {
    font-size: 1.5rem;
    margin-bottom: var(--s2);
  }

  .card__text {
    font-size: 0.875rem;
  }

  .difference__card {
    padding: var(--s4);
  }

  .form-input {
    padding: 1rem 0.75rem 0.5rem;
    font-size: 16px;
    border-radius: var(--r-sm);
  }

  .contact__sub {
    font-size: 1rem;
    margin-bottom: var(--s4);
  }

  .contact__link {
    font-size: 1rem;
  }

  .footer__inner {
    gap: var(--s2);
  }

  .footer__copy {
    font-size: 0.75rem;
  }

  .footer__link {
    font-size: 0.75rem;
  }

  .about__text {
    font-size: 1rem;
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
  }
}

/* Extra small (≤ 360px) */
@media (max-width: 360px) {
  :root {
    --pad:  0.75rem;
  }

  .hero__title {
    font-size: 2.5rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .card__num {
    font-size: 2rem;
  }
}


/* =============================================================
   REDUCED MOTION
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}