/* =============================================
   MELLOW WEB SERVICES — Frosted Arctic Tech
   style.css
   ============================================= */

:root {
  --bg:           #f4f5f7;
  --bg-white:     #ffffff;
  --bg-card:      #ffffff;
  --bg-dark:      #0d1117;
  --bg-dark2:     #161b22;

  --navy:         #0d1117;
  --navy-mid:     #1c2333;
  --blue-acc:     #2563eb;
  --blue-light:   #eff6ff;
  --blue-dim:     rgba(37,99,235,0.08);

  --border:       #e2e5ea;
  --border-dark:  rgba(255,255,255,0.07);

  --text:         #0d1117;
  --text-muted:   #6b7280;
  --text-dim:     #9ca3af;
  --text-inv:     #f0f4f8;
  --text-inv-dim: rgba(240,244,248,0.5);

  --green:        #10b981;

  --font-display: 'Outfit', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --radius:       6px;
  --radius-lg:    12px;
  --transition:   0.3s cubic-bezier(0.4,0,0.2,1);
  --shadow:       0 1px 3px rgba(13,17,23,0.08), 0 4px 16px rgba(13,17,23,0.04);
  --shadow-lg:    0 4px 24px rgba(13,17,23,0.1), 0 1px 4px rgba(13,17,23,0.06);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-display);
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}

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

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 2.5rem;
}

/* --- Grid background --- */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(13,17,23,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13,17,23,0.035) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* --- Reveal --- */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* --- Typography --- */
h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 200;
  line-height: 1.05;
  letter-spacing: -0.03em;
}
h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3.2rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.mono { font-family: var(--font-mono); }
.text-dim { color: var(--text-dim); }

.label {
  display: block;
  font-size: 0.72rem;
  color: var(--blue-acc);
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
}

.section-header { margin-bottom: 3.5rem; }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.6rem;
  background: var(--navy);
  color: #fff;
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1.5px solid var(--navy);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn:hover {
  background: var(--navy-mid);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(13,17,23,0.2);
}
.btn--line {
  background: transparent;
  color: var(--navy);
  border-color: var(--border);
}
.btn--line:hover {
  border-color: var(--navy);
  background: var(--bg-white);
}
.btn--sm { padding: 0.55rem 1.2rem; font-size: 0.82rem; }
.btn--lg { padding: 1rem 2.25rem; font-size: 0.95rem; }
.btn--full { width: 100%; justify-content: center; }

/* =============================================
   NAV
   ============================================= */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 1.1rem 2.5rem;
  background: rgba(244,245,247,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.nav.scrolled {
  border-color: var(--border);
  background: rgba(244,245,247,0.95);
}
.nav__logo {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  flex: 1;
  color: var(--navy);
}
.nav__logo-bracket { color: var(--blue-acc); }
.nav__links {
  display: flex;
  gap: 2rem;
}
.nav__links a {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-muted);
  transition: color var(--transition);
  letter-spacing: 0.01em;
}
.nav__links a:hover { color: var(--text); }
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__burger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--navy);
  transition: var(--transition);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--bg-white);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.mobile-menu.open { display: flex; }
.mobile-menu__close {
  position: absolute;
  top: 1.5rem; right: 2rem;
  background: none;
  border: none;
  font-size: 1.1rem;
  color: var(--text-muted);
  cursor: pointer;
}
.mobile-menu ul {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
}
.mobile-menu a {
  font-size: 1.8rem;
  font-weight: 300;
  letter-spacing: -0.02em;
  color: var(--text);
  transition: color var(--transition);
}
.mobile-menu a:hover { color: var(--blue-acc); }

/* =============================================
   HERO
   ============================================= */
.hero {
  position: relative;
  z-index: 1;
  padding-top: 7rem;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 5rem 0 3rem;
}
.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--green);
  background: rgba(16,185,129,0.08);
  border: 1px solid rgba(16,185,129,0.2);
  border-radius: 100px;
  padding: 0.35rem 0.9rem;
  margin-bottom: 2rem;
  letter-spacing: 0.04em;
}
.tag-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  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__outline {
  -webkit-text-stroke: 1.5px var(--navy);
  color: transparent;
}
.hero__sub {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 440px;
  margin: 1.5rem 0 2.5rem;
  font-weight: 300;
  line-height: 1.8;
}
.hero__cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* Code panel */
.hero__panel {
  background: var(--bg-dark);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-dark);
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(13,17,23,0.25), 0 4px 12px rgba(13,17,23,0.15);
}
.hero__panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border-dark);
  background: var(--bg-dark2);
}
.hero__panel-header .mono {
  font-size: 0.72rem;
  color: var(--text-inv-dim);
}
.hero__panel-dots {
  display: flex;
  gap: 6px;
}
.hero__panel-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.12);
}
.hero__panel-dots span:nth-child(1) { background: #ff5f57; }
.hero__panel-dots span:nth-child(2) { background: #febc2e; }
.hero__panel-dots span:nth-child(3) { background: #28c840; }
.hero__panel-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.9;
}
.code-line { display: flex; align-items: center; }
.code-line.pad { padding-left: 1.5rem; }
.c-key   { color: #79c0ff; }
.c-str   { color: #a5d6ff; }
.c-val   { color: #ffa657; }
.c-green { color: #56d364; }
.c-dim   { color: rgba(240,244,248,0.35); }
.hero__cursor {
  width: 8px;
  height: 1.1em;
  background: var(--blue-acc);
  margin-top: 4px;
  animation: blink 1.2s step-end infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

/* Metrics bar */
.hero__metrics {
  border-top: 1px solid var(--border);
  background: var(--bg-white);
  padding: 1.5rem 0;
}
.hero__metrics-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.metric { text-align: center; flex: 1; }
.metric__num {
  display: block;
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--navy);
  line-height: 1;
  margin-bottom: 0.2rem;
}
.metric__label {
  font-size: 0.72rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}
.metric__sep {
  width: 1px;
  height: 36px;
  background: var(--border);
  flex-shrink: 0;
}

/* =============================================
   SERVICES
   ============================================= */
.services {
  padding: 7rem 0;
  position: relative;
  z-index: 1;
}
.services__grid {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 1.5rem;
}
.scard {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}
.scard::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--blue-acc);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.scard:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: rgba(37,99,235,0.15);
}
.scard:hover::after { transform: scaleX(1); }
.scard__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}
.scard__index {
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.08em;
}
.scard__icon {
  width: 36px;
  height: 36px;
  color: var(--blue-acc);
}
.scard__icon svg { width: 100%; height: 100%; }
.scard h3 { margin-bottom: 0.75rem; }
.scard p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 1.5rem;
}
.scard__list {
  margin-bottom: 1.75rem;
  border-top: 1px solid var(--border);
}
.scard__list li {
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}
.scard__list li::before {
  content: '>';
  color: var(--blue-acc);
  font-size: 0.7rem;
  flex-shrink: 0;
}
.scard__cta {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--blue-acc);
  letter-spacing: 0.02em;
  transition: gap var(--transition), opacity var(--transition);
  display: inline-block;
}
.scard__cta:hover { opacity: 0.7; }

/* =============================================
   PROCESS
   ============================================= */
.process {
  padding: 7rem 0;
  background: var(--bg-dark);
  position: relative;
  z-index: 1;
}
.process .section-header .label { color: rgba(37,99,235,0.8); }
.process .section-header h2 { color: var(--text-inv); }
.process__track {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 0;
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.pstep {
  padding: 2.5rem 2rem;
  border-right: 1px solid var(--border-dark);
  position: relative;
  transition: background var(--transition);
}
.pstep:last-child { border-right: none; }
.pstep:hover { background: var(--bg-dark2); }
.pstep__num {
  font-size: 0.7rem;
  color: var(--blue-acc);
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  display: block;
}
.pstep__bar {
  width: 24px;
  height: 2px;
  background: var(--blue-acc);
  margin-bottom: 1.25rem;
  transition: width var(--transition);
}
.pstep:hover .pstep__bar { width: 40px; }
.pstep h3 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-inv);
  margin-bottom: 0.75rem;
}
.pstep p {
  font-size: 0.82rem;
  color: var(--text-inv-dim);
  line-height: 1.8;
}

/* =============================================
   CTA BAND
   ============================================= */
.cta-band {
  background: var(--blue-acc);
  padding: 5rem 0;
  position: relative;
  z-index: 1;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
}
.cta-band__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}
.cta-band .mono { color: rgba(255,255,255,0.6); }
.cta-band h2 { color: #fff; font-weight: 200; }
.cta-band .btn {
  background: #fff;
  color: var(--blue-acc);
  border-color: #fff;
  white-space: nowrap;
}
.cta-band .btn:hover { background: rgba(255,255,255,0.9); }

/* =============================================
   CONTACT
   ============================================= */
.contact {
  padding: 7rem 0;
  position: relative;
  z-index: 1;
}
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 5rem;
  align-items: flex-start;
}
.contact__info p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 1.75rem;
  font-weight: 300;
}
.contact__email {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--blue-acc);
  margin-bottom: 2rem;
  transition: opacity var(--transition);
}
.contact__email:hover { opacity: 0.7; }
.contact__email svg { width: 15px; height: 15px; flex-shrink: 0; }
.contact__note .mono { display: block; margin-bottom: 0.4rem; }
.contact__note p {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

/* Form */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.form-group label {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}
.form-group input,
.form-group select,
.form-group textarea {
  font-family: var(--font-display);
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue-acc);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.08);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-dim); }
.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}
.form-group textarea { resize: vertical; }
.form__success {
  display: none;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--green);
}
.form__success.show { display: block; }

/* =============================================
   FOOTER
   ============================================= */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  background: var(--bg-white);
  position: relative;
  z-index: 1;
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer__inner p {
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}
.footer__links {
  display: flex;
  gap: 1.75rem;
}
.footer__links a {
  font-size: 0.78rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--text); }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 900px) {
  .nav__links, .nav > .btn { display: none; }
  .nav__burger { display: flex; }

  .hero__inner { grid-template-columns: 1fr; padding: 4rem 0 2rem; }
  .hero__right { display: none; }

  .hero__metrics-inner { flex-wrap: wrap; gap: 1.5rem; justify-content: center; }
  .metric__sep { display: none; }

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

  .process__track { grid-template-columns: 1fr 1fr; }
  .pstep:nth-child(2) { border-right: none; }
  .pstep:nth-child(3) { border-top: 1px solid var(--border-dark); }
  .pstep:nth-child(4) { border-top: 1px solid var(--border-dark); border-right: none; }

  .cta-band__inner { flex-direction: column; text-align: center; }
  .cta-band .btn { width: 100%; justify-content: center; }

  .contact__inner { grid-template-columns: 1fr; gap: 3rem; }
  .form-row { grid-template-columns: 1fr; }

  .footer__inner { flex-direction: column; text-align: center; }
  .footer__links { justify-content: center; }
}

@media (max-width: 480px) {
  .process__track { grid-template-columns: 1fr; }
  .pstep { border-right: none; border-bottom: 1px solid var(--border-dark); }
  .pstep:last-child { border-bottom: none; }
  .pstep:nth-child(3),
  .pstep:nth-child(4) { border-top: none; }
  .hero__cta { flex-direction: column; }
  .hero__cta .btn { width: 100%; justify-content: center; }
}