/* Sutera Sites - custom overrides on top of Tailwind CDN */

:root {
  --bg: #0a0a0a;
  --bg-elev: #111111;
  --bg-card: #161616;
  --border: #1f1f1f;
  --text: #f5f5f5;
  --text-muted: #a3a3a3;
  --text-dim: #737373;
  --accent: #3b82f6;
  --accent-hover: #60a5fa;
  --accent-dim: rgba(59, 130, 246, 0.12);
}

* {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  overflow-x: hidden;
}

/* Reveal animations - initial state for GSAP */
.reveal {
  opacity: 0;
  transform: translateY(24px);
}

/* Grid background pattern (hairline cross only, not a gradient fill) */
.grid-bg {
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* Noise texture overlay */
.noise {
  position: absolute;
  inset: 0;
  opacity: 0.035;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Button primary */
.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 0.875rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
  border: 1px solid var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.25);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  padding: 0.875rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--text-muted);
  background: var(--bg-elev);
}

/* Nav CTA: transparent with white outline by default, blue-filled on hover */
.btn-nav {
  background: transparent;
  color: #fff;
  padding: 0.875rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s ease;
  border: 1px solid #fff;
}

.btn-nav:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.25);
}

/* Service card hover */
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 2rem;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.4), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.service-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

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

/* Case study card */
.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  overflow: hidden;
  transition: all 0.3s ease;
}

.case-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  transform: translateY(-4px);
}

/* Stat pill */
.stat-pill {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 1.5rem;
}

/* Nav blur */
.nav-blur {
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(10, 10, 10, 0.75);
}

/* Nav hide on scroll-down */
.nav-wrap {
  transition: transform 0.3s ease;
  will-change: transform;
}

.nav-wrap.nav-hidden {
  transform: translateY(-100%);
}

/* Section divider - solid hairline */
.section-divider {
  height: 1px;
  background-color: var(--border);
  max-width: 80rem;
  margin: 0 auto;
}

/* Accent pill (tags/labels) */
.accent-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  border-radius: 999px;
  background: var(--accent-dim);
  color: var(--accent-hover);
  border: 1px solid rgba(59, 130, 246, 0.2);
  font-size: 0.8rem;
  font-weight: 500;
}

.accent-pill::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

/* Mobile nav */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 100;
  display: none;
  flex-direction: column;
  padding: 2rem;
}

.mobile-nav.open {
  display: flex;
}

/* Muted text accent (replaces gradient text per brand rule: no gradients) */
.muted-text {
  color: var(--text-muted);
}

/* Large headlines */
.headline {
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

/* Link underline */
.link-underline {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--accent-hover);
  font-weight: 500;
  transition: gap 0.2s ease;
}

.link-underline:hover {
  gap: 0.625rem;
}

/* Scroll hint */
@keyframes scrollHint {
  0%, 100% { transform: translateY(0); opacity: 0.4; }
  50% { transform: translateY(6px); opacity: 1; }
}

.scroll-hint {
  animation: scrollHint 2s ease-in-out infinite;
}

/* ========= LOGO MARQUEE ========= */
.logo-marquee {
  overflow: hidden;
  position: relative;
  -webkit-mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
  mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
}

.logo-track {
  display: flex;
  gap: 4rem;
  width: max-content;
  animation: scroll-logos 40s linear infinite;
}

.logo-track:hover {
  animation-play-state: paused;
}

.logo-item {
  flex-shrink: 0;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 1rem;
}

.logo-item img {
  height: 100%;
  width: auto;
  max-width: 180px;
  object-fit: contain;
  filter: grayscale(1) brightness(1.6);
  opacity: 0.65;
  transition: all 0.3s ease;
}

.logo-item:hover img {
  filter: grayscale(0) brightness(1);
  opacity: 1;
}

/* Drop solid black backgrounds on specific logos via SVG luma-to-alpha filter */
.logo-item.bg-drop img {
  filter: url(#drop-black) grayscale(1) brightness(1.6);
}

.logo-item.bg-drop:hover img {
  filter: url(#drop-black);
}

/* Brand logo (navbar + footer). Strips solid black background via SVG filter. */
.brand-logo {
  height: 80px;
  width: auto;
  display: block;
  filter: url(#drop-black);
}

@media (min-width: 768px) {
  .brand-logo {
    height: 96px;
  }
}

@keyframes scroll-logos {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ========= CONTACT FORM ========= */
.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-field label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.01em;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  background-color: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  padding: 0.875rem 1rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--text-dim);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background-color: var(--bg-card);
}

.form-field textarea {
  resize: vertical;
  min-height: 120px;
}

.form-field select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23a3a3a3' stroke-width='2.5'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 12px;
  padding-right: 2.5rem;
}

.form-field-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .form-field-row {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-card .icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 0.5rem;
  background-color: var(--accent-dim);
  color: var(--accent-hover);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-card .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  margin-bottom: 0.25rem;
}

.contact-card .value {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.contact-card .value a:hover {
  color: var(--accent-hover);
}

/* ========= MEGA MENU ========= */
.mega-menu-trigger {
  position: relative;
  cursor: pointer;
}

.mega-menu {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: rgba(17, 17, 17, 0.95);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0s linear 0.2s;
  z-index: 40;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.mega-menu.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0s;
}

.mega-menu-inner {
  max-width: 80rem;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

.mega-menu-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.mega-menu-card {
  display: block;
  padding: 1.25rem;
  border-radius: 0.75rem;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.mega-menu-card:hover {
  background: var(--bg-card);
  border-color: var(--border);
}

.mega-menu-card .icon {
  width: 36px;
  height: 36px;
  border-radius: 0.5rem;
  background: var(--accent-dim);
  color: var(--accent-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.875rem;
}

/* Variant: container holds a full-colour image (e.g. Google Ads) - strip tint */
.mega-menu-card .icon.icon-img,
.icon-img {
  background: #fff;
}

.icon-img img {
  max-width: 70%;
  max-height: 70%;
  object-fit: contain;
}

/* Logo variant of the mega-menu icon: full-bleed client logo, no tinted box. */
.mega-menu-card .logo-icon {
  width: 44px;
  height: 44px;
  border-radius: 0.5rem;
  background-color: transparent;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.875rem;
  overflow: hidden;
  padding: 4px;
}

.mega-menu-card .logo-icon img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.mega-menu-card .logo-icon.bg-drop img {
  filter: url(#drop-black);
}

.mega-menu-card .logo-icon.monogram {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--accent-hover);
  background-color: var(--accent-dim);
  border-color: transparent;
  padding: 0;
}

.mega-menu-card h4 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 0.375rem;
}

.mega-menu-card p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.mega-menu-footer {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Prevent mega menu flicker between trigger and panel */
.nav-wrap {
  position: relative;
}