/* ==========================================================================
   Opertool marketing site — dark, considered, distinct from client templates
   ========================================================================== */

:root {
  --ink: #07090f;
  --panel: #10141f;
  --panel-alt: #161c2c;
  --border: rgba(231, 234, 243, 0.09);
  --border-strong: rgba(231, 234, 243, 0.18);
  --text: #edeff6;
  --text-soft: #9aa2ba;
  --text-faint: #6b7290;
  --accent: #44dcb8;
  --accent-2: #8aa2ff;
  --accent-warm: #f0c987;
  --accent-ink: #07090f;

  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius: 18px;
  --radius-sm: 12px;
  --max-width: 1160px;
  --section-pad: clamp(72px, 10vw, 120px);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--ink);
  line-height: 1.65;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.12;
  margin: 0 0 0.5em;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.015em;
}

h1 { font-size: clamp(2.4rem, 4.6vw + 1rem, 3.9rem); letter-spacing: -0.025em; }
h2 { font-size: clamp(1.8rem, 1.2vw + 1.4rem, 2.4rem); }
h3 { font-size: 1.14rem; margin-bottom: 0.5em; color: #fff; letter-spacing: -0.005em; }

p { margin: 0 0 1em; color: var(--text-soft); }

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

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

.text-accent {
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 10px 16px;
  z-index: 100;
}
.skip-link:focus { left: 12px; top: 12px; }

/* ---------- background decoration ---------- */
.bg-decor {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.2;
}
.orb-a {
  width: 620px;
  height: 620px;
  top: -220px;
  left: -160px;
  background: radial-gradient(circle, var(--accent), transparent 70%);
}
.orb-b {
  width: 520px;
  height: 520px;
  top: 760px;
  right: -200px;
  background: radial-gradient(circle, var(--accent-2), transparent 70%);
  opacity: 0.15;
}
.orb-c {
  width: 360px;
  height: 360px;
  top: 1700px;
  left: 8%;
  background: radial-gradient(circle, var(--accent-warm), transparent 72%);
  opacity: 0.08;
}

.grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(231, 234, 243, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(231, 234, 243, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.65) 0%, transparent 50%);
}

/* subtle film-grain texture for tactility */
.grain {
  position: fixed;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

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

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(7, 9, 15, 0.78);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  color: #fff;
  text-decoration: none;
  letter-spacing: -0.01em;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 9px;
  background: linear-gradient(145deg, rgba(68, 220, 184, 0.18), rgba(138, 162, 255, 0.12));
  border: 1px solid var(--border);
  color: var(--accent);
}

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

.primary-nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}
.primary-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.2s ease;
}
.primary-nav a:not(.nav-cta):hover::after { width: 100%; }
.primary-nav a:hover { color: var(--accent); }

.nav-cta {
  background: var(--accent);
  color: var(--accent-ink) !important;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 600 !important;
  box-shadow: 0 0 0 0 rgba(68, 220, 184, 0.5);
  transition: box-shadow 0.2s ease, opacity 0.2s ease;
}
.nav-cta:hover { opacity: 0.9; color: var(--accent-ink) !important; box-shadow: 0 0 0 5px rgba(68, 220, 184, 0.12); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  display: block;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  text-decoration: none;
  padding: 13px 24px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent, rgba(255,255,255,0.35), transparent);
  transform: translateX(-120%);
  transition: transform 0.5s ease;
}
.btn-primary:hover::after { transform: translateX(120%); }
.btn-primary:hover { opacity: 0.92; transform: translateY(-1px); }
.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.btn-large { padding: 16px 30px; font-size: 1rem; }

/* ---------- hero ---------- */
.hero {
  padding: clamp(96px, 14vw, 140px) 0 clamp(64px, 8vw, 96px);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.hero-content { max-width: 620px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 1.3em;
  padding: 6px 14px 6px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(68, 220, 184, 0.05);
}
.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-warm);
  box-shadow: 0 0 0 3px rgba(240, 201, 135, 0.15);
}

.hero-lead { font-size: 1.12rem; max-width: 54ch; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 1.8em;
}

.hero-features {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 2.2em 0 0;
  padding: 1.3em 0 0;
  border-top: 1px solid var(--border);
}
.hero-features li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.86rem;
  color: var(--text-faint);
}
.hero-features svg { color: var(--accent); flex: 0 0 auto; }

/* ---------- hero visual: css-only site mockup ---------- */
.hero-visual {
  position: relative;
  min-height: 380px;
  animation: float-hero 7s ease-in-out infinite alternate;
}
@media (prefers-reduced-motion: reduce) {
  .hero-visual { animation: none; }
}
@keyframes float-hero {
  from { transform: translateY(0); }
  to { transform: translateY(-9px); }
}

.mock-browser {
  position: relative;
  width: min(420px, 100%);
  margin-inline: auto;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  box-shadow: 0 30px 70px -20px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.02);
  transform: rotate(-2.5deg);
}

.mock-browser-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 14px;
  background: var(--panel-alt);
  border-bottom: 1px solid var(--border);
}
.mock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border-strong);
  flex: 0 0 auto;
}
.mock-url {
  margin-left: 8px;
  font-size: 0.72rem;
  color: var(--text-faint);
  background: rgba(255,255,255,0.04);
  padding: 3px 10px;
  border-radius: 999px;
}

.mock-browser-body { padding: 16px; }
.mock-hero {
  height: 92px;
  border-radius: 10px;
  margin-bottom: 14px;
  background: linear-gradient(135deg, rgba(68,220,184,0.35), rgba(138,162,255,0.28));
}
.mock-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
}
.mock-row:last-of-type { border-bottom: none; }
.mock-line {
  height: 8px;
  width: 62%;
  border-radius: 5px;
  background: rgba(231,234,243,0.14);
}
.mock-price {
  height: 8px;
  width: 15%;
  border-radius: 5px;
  background: rgba(68,220,184,0.4);
}
.mock-cta {
  margin-top: 14px;
  height: 30px;
  width: 40%;
  border-radius: 999px;
  background: var(--accent);
  opacity: 0.9;
}

.mock-phone {
  position: absolute;
  right: -4px;
  bottom: -34px;
  width: 132px;
  height: 210px;
  background: var(--panel-alt);
  border: 1px solid var(--border-strong);
  border-radius: 22px;
  padding: 10px 8px;
  box-shadow: 0 24px 50px -18px rgba(0,0,0,0.65);
  transform: rotate(6deg);
}
.mock-phone-notch {
  width: 36px;
  height: 5px;
  border-radius: 999px;
  background: rgba(255,255,255,0.14);
  margin: 0 auto 8px;
}
.mock-phone-screen {
  background: var(--panel);
  border-radius: 12px;
  height: 100%;
  padding: 10px 8px;
}
.mock-phone-hero {
  height: 50px;
  border-radius: 7px;
  margin-bottom: 8px;
  background: linear-gradient(135deg, rgba(138,162,255,0.35), rgba(68,220,184,0.3));
}
.mock-phone-line {
  height: 6px;
  border-radius: 4px;
  background: rgba(231,234,243,0.14);
  margin-bottom: 6px;
}
.mock-phone-line.short { width: 55%; }
.mock-phone-btn {
  margin-top: 10px;
  height: 20px;
  border-radius: 999px;
  background: var(--accent-2);
  opacity: 0.85;
}

.hero-badge {
  position: absolute;
  left: 10px;
  top: -20px;
  background: var(--ink);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-size: 0.74rem;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: 999px;
  box-shadow: 0 10px 26px -10px rgba(0,0,0,0.6);
}
.hero-badge::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 7px;
}

/* ---------- sections ---------- */
.section { padding: var(--section-pad) 0; }
.section-alt { background: rgba(22, 28, 44, 0.45); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-lead { max-width: 62ch; }

.section-head { margin-bottom: clamp(32px, 5vw, 48px); }
.section-head h2 { max-width: 20ch; }

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-faint);
  margin-bottom: 1em;
}
.kicker-num {
  font-family: var(--font-display);
  color: var(--accent);
  font-size: 0.8rem;
  letter-spacing: 0;
}
.kicker-num::after {
  content: '';
  display: inline-block;
  width: 20px;
  height: 1px;
  background: var(--border-strong);
  margin-left: 10px;
  vertical-align: middle;
}

/* ---------- services ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.service-card {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(22, 28, 44, 0.6), rgba(16, 20, 31, 0.6));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 26px;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.service-card:hover {
  border-color: rgba(68, 220, 184, 0.35);
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -24px rgba(0,0,0,0.6);
}

.ghost-num {
  position: absolute;
  top: -14px;
  right: 6px;
  font-family: var(--font-display);
  font-size: 4.4rem;
  font-weight: 700;
  color: rgba(231,234,243,0.045);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.service-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(68, 220, 184, 0.1);
  color: var(--accent);
  margin-bottom: 1.1em;
}

.service-card p { position: relative; font-size: 0.94rem; margin-bottom: 0; }
.service-card h3 { position: relative; }

/* ---------- work / case study ---------- */
.case-study {
  display: block;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  background: var(--panel);
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.case-study:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 26px 60px -20px rgba(0, 0, 0, 0.55);
}

.browser-chrome {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  background: var(--panel-alt);
  border-bottom: 1px solid var(--border);
}
.chrome-url {
  margin-left: 8px;
  font-size: 0.76rem;
  color: var(--text-faint);
  background: rgba(255,255,255,0.04);
  padding: 4px 12px;
  border-radius: 999px;
}

.case-study img {
  width: 100%;
  display: block;
  border-bottom: 1px solid var(--border);
}

.case-study-caption {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 18px 22px;
}
.case-study-caption strong { color: #fff; font-size: 1rem; }
.case-study-caption span:last-child {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-size: 0.9rem;
}

/* ---------- process ---------- */
.process-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  position: relative;
}

.process-list li {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  padding: 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.process-list li:hover { background: rgba(255, 255, 255, 0.025); border-color: var(--border); }

.process-num {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--panel);
  border: 1px solid var(--border-strong);
  color: var(--accent);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.process-list p { font-size: 0.94rem; margin-bottom: 0; }

@media (min-width: 781px) {
  .process-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }
  .process-list::before {
    content: '';
    position: absolute;
    top: 43px;
    left: calc(16.66% + 3px);
    right: calc(16.66% + 3px);
    height: 1px;
    background: linear-gradient(90deg, var(--border-strong), var(--border), var(--border-strong));
    z-index: 0;
  }
  .process-list li {
    flex-direction: column;
    text-align: left;
    padding: 0;
    position: relative;
    z-index: 1;
  }
  .process-list li:hover { background: none; border-color: transparent; }
  .process-num { margin-bottom: 1.3em; }
}

/* ---------- about ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(24px, 5vw, 56px);
  align-items: start;
}
.about-head { margin-bottom: 0; }
.about-copy { max-width: 56ch; }
.about-lead { font-size: 1.2rem; color: var(--text); font-family: var(--font-display); font-weight: 500; letter-spacing: -0.01em; line-height: 1.45; }

@media (max-width: 780px) {
  .about-grid { grid-template-columns: 1fr; }
}

/* ---------- contact ---------- */
.contact-card {
  max-width: 620px;
  padding: clamp(32px, 6vw, 56px);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(68,220,184,0.07), rgba(138,162,255,0.05));
  border: 1px solid var(--border-strong);
  position: relative;
  overflow: hidden;
}
.contact-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(160deg, rgba(68,220,184,0.4), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.contact-card .section-lead { margin-bottom: 1.6em; }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  background: rgba(22, 28, 44, 0.45);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-soft);
}

.footer-inner p { margin: 0; }
.footer-inner a { color: var(--text-soft); text-decoration: none; }
.footer-inner a:hover { color: var(--accent); }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 460px; margin: 8px auto 0; }
  .hero-content { max-width: 640px; }
}

@media (max-width: 780px) {
  .nav-toggle { display: flex; }

  .primary-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--ink);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 16px;
    display: none;
  }
  .primary-nav.open { display: flex; }
  .nav-cta { align-self: flex-start; }

  .hero { padding-top: 100px; }
  .mock-phone { right: 8px; bottom: -28px; width: 104px; height: 172px; }
}

@media (max-width: 480px) {
  .contact-card { padding: 28px 22px; }
}