/* ===========================
   ESKAFLUX — DESIGN SYSTEM
   =========================== */

:root {
  --c-bg: #000000;
  --c-bg-1: #0a0a0a;
  --c-bg-2: #111111;
  --c-bg-3: #1a1a1a;
  --c-border: rgba(255,255,255,0.07);
  --c-border-hover: rgba(255,255,255,0.15);

  --c-text: #ffffff;
  --c-text-2: #a0a0a0;
  --c-text-3: #666666;

  --g-start: #00c9c0;
  --g-end:   #5eda8e;
  --gradient: linear-gradient(135deg, var(--g-start), var(--g-end));
  --gradient-45: linear-gradient(45deg, var(--g-start), var(--g-end));

  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --nav-h: 72px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
input, textarea, select, button { font-family: var(--font); }

/* UTILITIES */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mt-2 { margin-top: 16px; }

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.9375rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn--lg { padding: 15px 32px; font-size: 1rem; border-radius: 12px; }
.btn--sm { padding: 9px 18px; font-size: 0.875rem; }
.btn--full { width: 100%; justify-content: center; }

.btn--gradient {
  background: var(--gradient);
  color: #000;
  font-weight: 700;
  box-shadow: 0 0 28px rgba(0,201,192,0.25);
}
.btn--gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px rgba(0,201,192,0.4);
}

.btn--outline {
  background: transparent;
  color: var(--c-text);
  border: 1.5px solid var(--c-border-hover);
}
.btn--outline:hover {
  border-color: var(--g-start);
  color: var(--g-start);
}

.btn--ghost {
  background: rgba(255,255,255,0.05);
  color: var(--c-text);
  border: 1.5px solid var(--c-border);
}
.btn--ghost:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--c-border-hover);
}

/* ===========================
   NAV
   =========================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background var(--transition), border-color var(--transition);
}
.nav.scrolled {
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--c-border);
}
.nav__inner {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav__logo-img {
  height: 42px;
  width: auto;
}
.nav__links {
  display: flex;
  gap: 8px;
  margin-left: auto;
}
.nav__links a {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.9375rem;
  color: var(--c-text-2);
  transition: color var(--transition), background var(--transition);
}
.nav__links a:hover {
  color: var(--c-text);
  background: rgba(255,255,255,0.05);
}
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
  padding: 4px;
}
.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav__mobile {
  display: none;
  position: absolute;
  top: var(--nav-h);
  left: 0; right: 0;
  background: rgba(0,0,0,0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--c-border);
  padding: 20px 24px 28px;
  flex-direction: column;
  gap: 8px;
}
.nav__mobile.open { display: flex; }
.nav__mobile ul { display: flex; flex-direction: column; gap: 4px; }
.nav__mobile a { display: block; padding: 10px 4px; color: var(--c-text-2); font-size: 1rem; }
.nav__mobile a:hover { color: var(--c-text); }

/* ===========================
   HERO
   =========================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  position: relative;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.12;
}
.hero__orb--1 {
  width: 700px; height: 700px;
  background: radial-gradient(circle, var(--g-start), transparent 70%);
  top: -200px; left: -200px;
  animation: orbFloat 10s ease-in-out infinite alternate;
}
.hero__orb--2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, var(--g-end), transparent 70%);
  bottom: -100px; right: -100px;
  animation: orbFloat 14s ease-in-out infinite alternate-reverse;
}
.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: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 0%, transparent 100%);
}

@keyframes orbFloat {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(40px, 30px) scale(1.08); }
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: 80px 24px 100px;
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,201,192,0.08);
  border: 1px solid rgba(0,201,192,0.2);
  color: var(--g-start);
  padding: 8px 18px;
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 28px;
}
.badge__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--g-start);
  box-shadow: 0 0 8px var(--g-start);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.07;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero__desc {
  font-size: clamp(1rem, 2vw, 1.1875rem);
  color: var(--c-text-2);
  max-width: 620px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero__ctas {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero__stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 36px;
}
.stat__num {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  margin-bottom: 4px;
}
.stat__label { font-size: 0.8125rem; color: var(--c-text-3); }
.stat__divider {
  width: 1px;
  height: 40px;
  background: var(--c-border);
}

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--c-text-3);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--c-text-3), transparent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ===========================
   BAND
   =========================== */
.band {
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  padding: 28px 0;
  overflow: hidden;
}
.band .container { display: flex; align-items: center; gap: 32px; flex-wrap: wrap; justify-content: center; }
.band__label { font-size: 0.8125rem; color: var(--c-text-3); white-space: nowrap; }
.band__logos {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  align-items: center;
}
.band__logos span {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--c-text-3);
  letter-spacing: 0.02em;
  transition: color var(--transition);
}
.band__logos span:hover { color: var(--c-text-2); }

/* ===========================
   SECTIONS
   =========================== */
.section { padding: 96px 0; }
.section--alt { background: var(--c-bg-1); }

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 64px;
}
.section__eyebrow {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--g-start);
  margin-bottom: 12px;
}
.section__title {
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}
.section__sub {
  font-size: 1.0625rem;
  color: var(--c-text-2);
  line-height: 1.7;
}

/* ===========================
   CARDS / SERVICES
   =========================== */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.card {
  background: var(--c-bg-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  background: var(--gradient);
  opacity: 0;
  transition: opacity var(--transition);
  z-index: 0;
}
.card:hover { border-color: rgba(0,201,192,0.3); transform: translateY(-4px); }
.card:hover::before { opacity: 0.03; }
.card > * { position: relative; z-index: 1; }

.card--featured {
  grid-column: span 2;
  background: linear-gradient(135deg, rgba(0,201,192,0.06), rgba(94,218,142,0.04));
  border-color: rgba(0,201,192,0.2);
}

.card__icon {
  width: 52px; height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,201,192,0.1);
  border: 1px solid rgba(0,201,192,0.2);
  border-radius: 12px;
  color: var(--g-start);
  margin-bottom: 20px;
}

.card__title {
  font-size: 1.1875rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.card__desc {
  font-size: 0.9375rem;
  color: var(--c-text-2);
  line-height: 1.65;
  margin-bottom: 20px;
}

.card__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}
.card__list li {
  font-size: 0.875rem;
  color: var(--c-text-2);
  padding-left: 18px;
  position: relative;
}
.card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gradient);
}

.card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--g-start);
  transition: gap var(--transition);
}
.card__link:hover { gap: 10px; }

.card--cta {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 16px;
  background: linear-gradient(135deg, rgba(0,201,192,0.08), rgba(94,218,142,0.05));
  border-color: rgba(0,201,192,0.15);
}
.card--cta h3 { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.02em; }
.card--cta p { font-size: 0.9375rem; color: var(--c-text-2); line-height: 1.6; }

/* ===========================
   STEPS
   =========================== */
.steps {
  display: flex;
  align-items: flex-start;
  gap: 0;
  position: relative;
}
.step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 16px;
  padding: 0 16px;
}
.step__num {
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--gradient);
  color: #000;
  font-size: 0.9375rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  box-shadow: 0 0 24px rgba(0,201,192,0.3);
}
.step__content h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}
.step__content p { font-size: 0.9375rem; color: var(--c-text-2); line-height: 1.65; }
.step__connector {
  flex-shrink: 0;
  height: 2px;
  width: 48px;
  background: linear-gradient(to right, var(--g-start), var(--g-end));
  align-self: 56px;
  margin-top: 27px;
  opacity: 0.4;
}

/* ===========================
   CASES
   =========================== */
.cases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.case {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--c-bg-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color var(--transition), transform var(--transition);
}
.case:hover { border-color: rgba(0,201,192,0.25); transform: translateY(-3px); }
.case__icon {
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,201,192,0.08);
  border: 1px solid rgba(0,201,192,0.15);
  border-radius: 10px;
  color: var(--g-start);
  flex-shrink: 0;
}
.case h4 { font-size: 1rem; font-weight: 700; margin-bottom: 6px; letter-spacing: -0.02em; }
.case p { font-size: 0.875rem; color: var(--c-text-2); line-height: 1.6; }

/* ===========================
   CTA BANNER
   =========================== */
.cta-banner {
  position: relative;
  padding: 96px 0;
  overflow: hidden;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
}
.cta-banner__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.cta-banner__orb {
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--g-start), transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  filter: blur(120px);
  opacity: 0.08;
}
.cta-banner__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}
.cta-banner__content h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}
.cta-banner__content p {
  font-size: 1.0625rem;
  color: var(--c-text-2);
  margin-bottom: 36px;
  line-height: 1.7;
}

/* ===========================
   CONTACT
   =========================== */
.contact__wrap {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 64px;
  align-items: start;
}
.contact__info .section__title { text-align: left; }
.contact__info .section__sub { text-align: left; margin-bottom: 40px; }
.contact__info .section__eyebrow { text-align: left; }
.contact__items { display: flex; flex-direction: column; gap: 16px; }
.contact__item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.9375rem;
  color: var(--c-text-2);
}
.contact__item-icon {
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,201,192,0.08);
  border: 1px solid rgba(0,201,192,0.15);
  border-radius: 10px;
  color: var(--g-start);
  flex-shrink: 0;
}

.contact__form {
  background: var(--c-bg-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form__group { display: flex; flex-direction: column; gap: 8px; }
.form__group label { font-size: 0.875rem; font-weight: 500; color: var(--c-text-2); }
.form__group input,
.form__group textarea,
.form__group select {
  background: var(--c-bg-3);
  border: 1.5px solid var(--c-border);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--c-text);
  font-size: 0.9375rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}
.form__group input::placeholder,
.form__group textarea::placeholder { color: var(--c-text-3); }
.form__group input:focus,
.form__group textarea:focus,
.form__group select:focus {
  border-color: var(--g-start);
  box-shadow: 0 0 0 3px rgba(0,201,192,0.1);
}
.form__group select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 44px;
}
.form__group select option { background: var(--c-bg-3); }
.form__group textarea { resize: vertical; min-height: 100px; }
.form__success {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: rgba(0,201,192,0.08);
  border: 1px solid rgba(0,201,192,0.25);
  border-radius: 10px;
  color: var(--g-start);
  font-size: 0.9375rem;
  font-weight: 500;
}
.form__success.show { display: flex; }

/* ===========================
   FOOTER
   =========================== */
.footer {
  background: var(--c-bg-1);
  border-top: 1px solid var(--c-border);
  padding: 64px 0 32px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 64px;
  margin-bottom: 48px;
}
.footer__brand .footer__logo { height: 48px; margin-bottom: 16px; }
.footer__brand p { font-size: 0.9375rem; color: var(--c-text-2); max-width: 300px; line-height: 1.65; }
.footer__links { display: flex; gap: 48px; }
.footer__col h5 { font-size: 0.875rem; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; color: var(--c-text-3); margin-bottom: 16px; }
.footer__col ul { display: flex; flex-direction: column; gap: 10px; }
.footer__col a { font-size: 0.9375rem; color: var(--c-text-2); transition: color var(--transition); }
.footer__col a:hover { color: var(--c-text); }
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--c-border);
  font-size: 0.875rem;
  color: var(--c-text-3);
}
.footer__bottom a { color: var(--c-text-3); transition: color var(--transition); }
.footer__bottom a:hover { color: var(--g-start); }

/* ===========================
   SCROLL ANIMATIONS
   =========================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 1024px) {
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .card--featured { grid-column: span 2; }
  .cases__grid { grid-template-columns: repeat(2, 1fr); }
  .contact__wrap { grid-template-columns: 1fr; gap: 48px; }
  .footer__top { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  :root { --nav-h: 64px; }

  .nav__links,
  .nav > .btn { display: none; }
  .nav__hamburger { display: flex; }

  .hero__content { padding: 60px 24px 80px; }
  .hero__stats { gap: 0; }
  .stat { padding: 0 20px; }
  .stat__num { font-size: 1.5rem; }

  .services__grid { grid-template-columns: 1fr; }
  .card--featured { grid-column: span 1; }

  .steps {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }
  .step__connector {
    width: 2px;
    height: 32px;
    margin: 0;
  }
  .step { max-width: 320px; }

  .cases__grid { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }

  .contact__form { padding: 28px 20px; }

  .footer__links { flex-direction: column; gap: 32px; }
  .footer__bottom { flex-direction: column; gap: 8px; text-align: center; }
}

@media (max-width: 480px) {
  .hero__ctas { flex-direction: column; align-items: center; }
  .hero__stats { flex-wrap: wrap; gap: 16px; }
  .stat__divider { display: none; }
}