style.css

/* ===== CSS Variables (OKLCH Color Theme) ===== */
:root {
  --background: oklch(1 0 0);
  --foreground: oklch(0.145 0 0);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.145 0 0);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.145 0 0);
  --primary: oklch(0.205 0 0);
  --primary-foreground: oklch(0.985 0 0);
  --secondary: oklch(0.97 0 0);
  --secondary-foreground: oklch(0.205 0 0);
  --muted: oklch(0.97 0 0);
  --muted-foreground: oklch(0.556 0 0);
  --accent: oklch(0.97 0 0);
  --accent-foreground: oklch(0.205 0 0);
  --destructive: oklch(0.577 0.245 27.325);
  --border: oklch(0.922 0 0);
  --input: oklch(0.922 0 0);
  --ring: oklch(0.708 0 0);
  --radius: 0.625rem;
  --brand: oklch(0.488 0.243 264.376);
  --grid-color: oklch(0.922 0 0);
}

.dark {
  --background: oklch(0.145 0 0);
  --foreground: oklch(0.985 0 0);
  --card: oklch(0.205 0 0);
  --card-foreground: oklch(0.985 0 0);
  --popover: oklch(0.205 0 0);
  --popover-foreground: oklch(0.985 0 0);
  --primary: oklch(0.922 0 0);
  --primary-foreground: oklch(0.205 0 0);
  --secondary: oklch(0.269 0 0);
  --secondary-foreground: oklch(0.985 0 0);
  --muted: oklch(0.269 0 0);
  --muted-foreground: oklch(0.708 0 0);
  --accent: oklch(0.269 0 0);
  --accent-foreground: oklch(0.985 0 0);
  --destructive: oklch(0.704 0.191 22.216);
  --border: oklch(1 0 0 / 10%);
  --input: oklch(1 0 0 / 15%);
  --ring: oklch(0.556 0 0);
  --brand: oklch(0.6 0.2 264);
  --grid-color: oklch(1 0 0 / 5%);
}

/* ===== Base ===== */
* {
  border-color: var(--border);
}

html {
  scroll-behavior: smooth;
}

body {
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--background);
}
::-webkit-scrollbar-thumb {
  background: var(--muted);
  border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--muted-foreground);
}

/* ===== Navbar ===== */
#navbar.scrolled #navbar-inner {
  background: color-mix(in oklch, var(--background) 80%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.04), 0 1px 2px -1px rgb(0 0 0 / 0.03);
}

.nav-link {
  padding: 0.5rem 0.875rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--muted-foreground);
  border-radius: 0.5rem;
  transition: color 0.2s, background 0.2s;
}
.nav-link:hover {
  color: var(--foreground);
  background: var(--muted);
}

.mobile-link {
  display: block;
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted-foreground);
  border-radius: 0.5rem;
  transition: color 0.2s, background 0.2s;
}
.mobile-link:hover {
  color: var(--foreground);
  background: var(--muted);
}

.quick-link {
  position: relative;
  transition: color 0.2s;
}
.quick-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--foreground);
  transition: width 0.2s;
}
.quick-link:hover {
  color: var(--foreground);
}
.quick-link:hover::after {
  width: 100%;
}

/* ===== Hero Background ===== */
.hero-grid {
  background-image:
    linear-gradient(to right, var(--grid-color) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-color) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, black 30%, transparent 80%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, black 30%, transparent 80%);
}

.hero-glow {
  background: radial-gradient(circle at 50% 0%, color-mix(in oklch, var(--brand) 8%, transparent), transparent 60%);
}

/* ===== Section Labels ===== */
.section-label {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted-foreground);
}

.section-title {
  font-size: clamp(1.875rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.section-desc {
  max-width: 40rem;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--muted-foreground);
}

/* ===== Service Cards ===== */
.service-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
  border: 1px solid color-mix(in oklch, var(--border) 60%, transparent);
  border-radius: var(--radius);
  background: var(--card);
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brand), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.service-card:hover {
  border-color: color-mix(in oklch, var(--border) 100%, transparent);
  box-shadow: 0 0 0 1px color-mix(in oklch, var(--brand) 15%, transparent), 0 12px 40px -12px rgb(0 0 0 / 0.15);
  transform: translateY(-2px);
}

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

.service-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 2.75rem;
  width: 2.75rem;
  border-radius: 0.625rem;
  border: 1px solid var(--border);
  background: var(--muted);
  color: var(--foreground);
  transition: background 0.3s, border-color 0.3s;
}

.service-card:hover .service-icon {
  background: var(--foreground);
  color: var(--background);
  border-color: var(--foreground);
}

.service-tag {
  margin-top: 1.25rem;
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-foreground);
}

.service-title {
  margin-top: 0.375rem;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.service-desc {
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--muted-foreground);
  flex-grow: 1;
}

.service-tech {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.tech-pill {
  font-size: 0.6875rem;
  font-weight: 500;
  padding: 0.25rem 0.625rem;
  border-radius: 0.375rem;
  background: var(--muted);
  color: var(--muted-foreground);
  transition: background 0.2s, color 0.2s;
}

.service-card:hover .tech-pill {
  background: color-mix(in oklch, var(--brand) 10%, var(--muted));
  color: var(--foreground);
}

/* ===== Process Steps ===== */
.process-step {
  background: var(--card);
  padding: 2rem 1.75rem;
  position: relative;
  transition: background 0.3s;
}

.process-step:hover {
  background: var(--muted);
}

.process-number {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--muted-foreground);
}

.process-icon {
  height: 1.5rem;
  width: 1.5rem;
  margin-top: 1rem;
  color: var(--brand);
}

.process-title {
  margin-top: 0.75rem;
  font-size: 1rem;
  font-weight: 700;
}

.process-desc {
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--muted-foreground);
}

/* ===== Tech Marquee ===== */
.tech-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 0.625rem;
  background: var(--card);
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  transition: border-color 0.2s, background 0.2s;
}

.tech-badge:hover {
  border-color: color-mix(in oklch, var(--brand) 30%, var(--border));
  background: var(--muted);
}

.marquee-track {
  animation: marquee 35s linear infinite;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-100%); }
}

/* ===== About ===== */
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

.feature-check {
  flex-shrink: 0;
  height: 1.25rem;
  width: 1.25rem;
  margin-top: 0.0625rem;
  border-radius: 9999px;
  background: var(--foreground);
  color: var(--background);
  padding: 0.125rem;
}

/* ===== Stats ===== */
.stat-card {
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  transition: border-color 0.3s, transform 0.3s;
}

.stat-card:hover {
  border-color: color-mix(in oklch, var(--brand) 30%, var(--border));
  transform: translateY(-2px);
}

.stat-number {
  font-size: 1.875rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat-suffix {
  font-size: 1.25rem;
  color: var(--muted-foreground);
}

.stat-label {
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--muted-foreground);
}

/* ===== Testimonials ===== */
.testimonial-card {
  display: flex;
  flex-direction: column;
  padding: 1.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.testimonial-card:hover {
  border-color: color-mix(in oklch, var(--brand) 25%, var(--border));
  box-shadow: 0 12px 40px -12px rgb(0 0 0 / 0.1);
}

/* ===== FAQ ===== */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item.active {
  border-color: color-mix(in oklch, var(--brand) 30%, var(--border));
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.125rem 1.25rem;
  text-align: left;
  cursor: pointer;
  transition: background 0.2s;
}

.faq-trigger:hover {
  background: var(--muted);
}

.faq-chevron {
  color: var(--muted-foreground);
  transition: transform 0.3s, color 0.2s;
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  color: var(--brand);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-item.active .faq-content {
  max-height: 300px;
}

.faq-content > p {
  padding: 0 1.25rem 1.125rem 1.25rem;
}

/* ===== Form ===== */
.form-label {
  display: block;
  margin-bottom: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--foreground);
}

.form-input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  color: var(--foreground);
  background: var(--background);
  border: 1px solid var(--input);
  border-radius: calc(var(--radius) - 2px);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input::placeholder {
  color: var(--muted-foreground);
}

.form-input:focus {
  border-color: var(--ring);
  box-shadow: 0 0 0 2px color-mix(in oklch, var(--ring) 30%, transparent);
}

.form-input:hover:not(:focus) {
  border-color: var(--muted-foreground);
}

/* ===== Footer ===== */
.footer-title {
  font-size: 0.8125rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links a {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--foreground);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 2.25rem;
  width: 2.25rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  color: var(--muted-foreground);
  transition: color 0.2s, background 0.2s, border-color 0.2s;
}

.social-link:hover {
  color: var(--foreground);
  background: var(--muted);
  border-color: var(--muted-foreground);
}

/* ===== Animations ===== */
@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-up {
  animation: fade-up 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.animate-scroll-bounce {
  animation: scroll-bounce 1.8s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(10px); opacity: 0.3; }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ===== Mobile ===== */
@media (max-width: 640px) {
  .section-title {
    font-size: 1.75rem;
  }
}