/* ═══════════════════════════════════════════════
   VARIABLES
   ═══════════════════════════════════════════════ */
:root {
  --bg:        #0B0F0E;
  --bg-card:   #111916;
  --bg-card-hover: #162019;
  --surface:   #1A2420;
  --border:    #243029;
  --text:      #C8D5CE;
  --text-dim:  #6B7F72;
  --heading:   #E8F0EB;
  --accent:    #3DDC84;
  --accent-dim:#2A9D5E;
  --white:     #F5FAF7;

  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body:    'Outfit', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --ease: cubic-bezier(.16, 1, .3, 1);
  --container: 1120px;
}

/* ═══════════════════════════════════════════════
   RESET & BASE
   ═══════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.accent { color: var(--accent); }

/* ═══════════════════════════════════════════════
   NAV
   ═══════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 20px 0;
  transition: background .35s var(--ease), padding .35s var(--ease),
              backdrop-filter .35s var(--ease);
}

.nav.scrolled {
  background: rgba(11,15,14,.85);
  backdrop-filter: blur(16px);
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 28px;
  color: var(--heading);
  letter-spacing: -1px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav__links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dim);
  letter-spacing: .3px;
  transition: color .25s;
}

.nav__links a:hover { color: var(--accent); }

/* Language Toggle */
.lang-toggle {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 14px;
  cursor: pointer;
  transition: border-color .25s, background .25s;
}

.lang-toggle:hover {
  border-color: var(--accent-dim);
  background: var(--bg-card-hover);
}

.lang-toggle__flag {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 1px;
}

.nav__right-mobile {
  display: none;
  align-items: center;
  gap: 12px;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav__toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s var(--ease), opacity .2s;
}

.nav__toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.open span:nth-child(2) { opacity: 0; }
.nav__toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* MOBILE MENU */
.mobile-menu {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 99;
  background: rgba(11,15,14,.97);
  backdrop-filter: blur(20px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s var(--ease);
}

.mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu a {
  font-family: var(--font-display);
  font-size: 32px;
  color: var(--heading);
  transition: color .2s;
}

.mobile-menu a:hover { color: var(--accent); }

/* ═══════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .3px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(61,220,132,.2);
  background: #4de892;
}

.btn--ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: transparent;
  box-shadow: none;
}

.btn--sm {
  padding: 10px 20px;
  font-size: 13px;
}

/* ═══════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.grain {
  position: absolute;
  inset: 0;
  opacity: .035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  background-size: 200px;
  pointer-events: none;
}

.hero__grid-lines {
  position: absolute;
  inset: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 10%;
}

.hero__grid-lines span {
  width: 1px;
  height: 100%;
  background: linear-gradient(to bottom, transparent, var(--border) 30%, var(--border) 70%, transparent);
  opacity: .3;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
  width: 100%;
}

.hero__label {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(42px, 6.5vw, 80px);
  line-height: 1.08;
  color: var(--heading);
  margin-bottom: 28px;
  letter-spacing: -1px;
}

.hero__sub {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 40px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 72px;
}


.hero__scroll {
  position: absolute;
  bottom: 40px;
  right: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.hero__scroll span {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-dim);
  writing-mode: vertical-lr;
}

.hero__scroll-line {
  width: 1px;
  height: 60px;
  background: var(--border);
  position: relative;
  overflow: hidden;
}

.hero__scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  width: 100%;
  height: 50%;
  background: var(--accent);
  animation: scrollLine 1.8s var(--ease) infinite;
}

@keyframes scrollLine {
  0%   { top: -50%; }
  100% { top: 150%; }
}

/* ═══════════════════════════════════════════════
   SECTIONS COMMON
   ═══════════════════════════════════════════════ */
.section {
  padding: 120px 0;
  position: relative;
}

.section__header { margin-bottom: 64px; }

.section__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 2px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 16px;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4.5vw, 52px);
  color: var(--heading);
  line-height: 1.15;
  letter-spacing: -.5px;
}

/* ═══════════════════════════════════════════════
   ABOUT
   ═══════════════════════════════════════════════ */
.about__grid {
  max-width: 680px;
}

.about__text p {
  margin-bottom: 20px;
  font-size: 16px;
  line-height: 1.75;
}


/* ═══════════════════════════════════════════════
   SERVICES
   ═══════════════════════════════════════════════ */
.services { background: var(--bg-card); }

.services__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  transition: border-color .3s, transform .35s var(--ease);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity .3s;
}

.service-card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-4px);
}

.service-card:hover::before { opacity: 1; }

.service-card__number {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 24px;
  color: var(--heading);
  margin-bottom: 16px;
}

.service-card p {
  font-size: 15px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 24px;
}

.service-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.service-card__tags span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  background: rgba(61,220,132,.08);
  padding: 5px 12px;
  border-radius: 4px;
  letter-spacing: .5px;
}

/* ═══════════════════════════════════════════════
   STACK
   ═══════════════════════════════════════════════ */
.stack__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.stack__group h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}

.stack__items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.stack__items span {
  font-size: 14px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 8px 16px;
  border-radius: 6px;
  transition: border-color .25s, color .25s;
}

.stack__items span:hover {
  border-color: var(--accent-dim);
  color: var(--heading);
}

/* ═══════════════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════════════ */
.contact__inner { max-width: 680px; }

.contact__text {
  font-size: 17px;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 48px;
}

.contact__links {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact__link {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: border-color .3s, transform .3s var(--ease);
}

.contact__link:hover {
  border-color: var(--accent);
  transform: translateX(6px);
}

.contact__link-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  min-width: 70px;
}

.contact__link-value {
  font-size: 16px;
  color: var(--heading);
  flex: 1;
}

.contact__arrow {
  font-size: 20px;
  color: var(--accent);
  transition: transform .25s var(--ease);
}

.contact__link:hover .contact__arrow {
  transform: translateX(4px);
}

/* ═══════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════ */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__logo {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--heading);
}

.footer__copy {
  font-size: 13px;
  color: var(--text-dim);
}

/* ═══════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════ */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  animation: fadeUp .7s var(--ease) forwards;
}

@keyframes fadeUp {
  to { opacity: 1; transform: none; }
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity .6s var(--ease), transform .6s var(--ease);
}

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

/* ═══════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════ */
@media (max-width: 900px) {
  .nav__links       { display: none; }
  .nav__right-mobile { display: flex; }
  .nav__toggle       { display: flex; }

  .services__grid    { grid-template-columns: 1fr; }
  .stack__grid       { grid-template-columns: repeat(2, 1fr); gap: 24px; }

  .hero__scroll { display: none; }
  .hero__stats  { gap: 32px; }
}

@media (max-width: 560px) {
  .section { padding: 80px 0; }
  .stack__grid { grid-template-columns: 1fr; }
  .service-card { padding: 28px; }
  .project-card { padding: 24px; }
  .hero__stats { flex-direction: column; gap: 20px; }
  .footer__inner { flex-direction: column; gap: 12px; text-align: center; }
}