/* ── Reset & Base ─────────────────────────────────────── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #c8cfff;
  --secondary: #7c4f92;
  --bg: #0a0a0f;
  --bg-card: #111118;
  --bg-card-hover: #1a1a24;
  --text: #e0e0e8;
  --text-muted: #9090a0;
  --gradient: linear-gradient(135deg, #c8cfff, #7c4f92);
  --radius: 12px;
  --max-width: 1120px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ── Utility ─────────────────────────────────────────── */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section {
  padding: 5rem 0;
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 1rem;
}

/* ── Fade-in animation ───────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Nav ─────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 0.75rem 0;
  background: transparent;
  transition: background 0.3s;
}

.nav::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, #c8cfff, #7c4f92, transparent);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0;
}

.nav-pill {
  display: none;
  align-items: center;
  gap: 1.75rem;
  background: rgba(10, 10, 15, 0.85);
  border: 1px solid rgba(200, 207, 255, 0.15);
  border-radius: 999px;
  padding: 0.5rem 1.75rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-links {
  display: contents;
  list-style: none;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.25s;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--primary);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: color 0.25s;
}

.theme-toggle:hover {
  color: var(--primary);
}

.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-mobile {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(10, 10, 15, 0.97);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

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

.nav-mobile a {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--text);
  transition: color 0.25s;
}

.nav-mobile a:hover {
  color: var(--primary);
}

/* ── Hero ────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8rem 0 5rem;
  position: relative;
  overflow: hidden;
  text-align: center;
  background-image:
    linear-gradient(rgba(200, 207, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 207, 255, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.hero::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(124, 79, 146, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 720px;
  margin: 0 auto;
}

.hero-content h1 {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero-content h1 .gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.btn-gradient {
  display: inline-block;
  padding: 0.85rem 2rem;
  background: var(--gradient);
  color: #0a0a0f;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: transform 0.25s, box-shadow 0.25s;
}

.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(200, 207, 255, 0.2);
}

/* ── Services ────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid rgba(200, 207, 255, 0.06);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  transition: background 0.3s, border-color 0.3s, transform 0.3s, box-shadow 0.25s ease;
}

.service-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(200, 207, 255, 0.12);
  transform: translateY(-4px);
  box-shadow: 0 0 0 1.5px #c8cfff, 0 0 18px 2px rgba(124, 79, 146, 0.4);
}

.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(200, 207, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.4rem;
}

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── How It Works ────────────────────────────────────── */
.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid rgba(200, 207, 255, 0.06);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  text-align: center;
}

.step-number {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 1rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.step-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.step-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── About ───────────────────────────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-top: 2.5rem;
}

.about-bio {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.about-bio strong {
  color: var(--text);
}

.pillars-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.pillar-card {
  background: var(--bg-card);
  border: 1px solid rgba(200, 207, 255, 0.06);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  text-align: center;
}

.pillar-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(200, 207, 255, 0.08);
}

.pillar-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.pillar-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── Tech Stack ──────────────────────────────────────── */
.tech-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2.5rem;
  justify-content: center;
}

.chip {
  padding: 0.55rem 1.25rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid rgba(200, 207, 255, 0.12);
  background: var(--bg-card);
  color: var(--primary);
  transition: background 0.25s, border-color 0.25s;
}

.chip:hover {
  background: rgba(200, 207, 255, 0.06);
  border-color: rgba(200, 207, 255, 0.22);
}

/* ── Contact ─────────────────────────────────────────── */
.contact-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
  align-items: flex-start;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1rem;
  color: var(--text-muted);
  transition: color 0.25s;
}

.contact-link:hover {
  color: var(--primary);
}

.contact-link svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* ── Footer ──────────────────────────────────────────── */
.footer {
  padding: 2rem 0;
  border-top: 1px solid rgba(200, 207, 255, 0.06);
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Section Dividers ────────────────────────────────── */
.section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(200, 207, 255, 0.3), rgba(124, 79, 146, 0.3), transparent);
  margin: 0 auto;
  width: 80%;
}

/* ── Focus-visible ───────────────────────────────────── */
*:focus-visible {
  outline: 2px solid #c8cfff;
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── Light Theme ─────────────────────────────────────── */
[data-theme="light"] {
  --bg: #f5f5f7;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f0f4;
  --text: #0a0a0f;
  --text-muted: #555566;
}

[data-theme="light"] .nav-pill {
  background: rgba(245, 245, 247, 0.85);
}

[data-theme="light"] .nav-mobile {
  background: rgba(245, 245, 247, 0.97);
}

[data-theme="light"] .hero {
  background-image:
    linear-gradient(rgba(10, 10, 15, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(10, 10, 15, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}

[data-theme="light"] .hero::before {
  background: radial-gradient(circle, rgba(124, 79, 146, 0.08) 0%, transparent 70%);
}

[data-theme="light"] .service-card,
[data-theme="light"] .step-card,
[data-theme="light"] .pillar-card {
  border-color: rgba(10, 10, 15, 0.08);
}

[data-theme="light"] .service-card:hover {
  box-shadow: 0 0 0 1.5px #7c4f92, 0 0 18px 2px rgba(124, 79, 146, 0.15);
}

[data-theme="light"] .chip {
  background: #ffffff;
  border-color: rgba(10, 10, 15, 0.1);
}

[data-theme="light"] .section-divider {
  background: linear-gradient(90deg, transparent, rgba(124, 79, 146, 0.2), rgba(200, 207, 255, 0.3), transparent);
}

[data-theme="light"] .footer {
  border-top-color: rgba(10, 10, 15, 0.08);
}

[data-theme="light"] .btn-gradient {
  color: #ffffff;
}

[data-theme="light"] {
  --primary: #7c4f92;
}

[data-theme="light"] .chip {
  color: #7c4f92;
}

[data-theme="light"] .service-icon svg,
[data-theme="light"] .pillar-icon svg {
  stroke: #7c4f92;
}

[data-theme="light"] .nav-links a:hover,
[data-theme="light"] .contact-link:hover,
[data-theme="light"] .theme-toggle:hover,
[data-theme="light"] .nav-mobile a:hover {
  color: #7c4f92;
}

[data-theme="light"] *:focus-visible {
  outline-color: #7c4f92;
}

/* ── Responsive ──────────────────────────────────────── */
@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .nav-pill {
    display: flex;
  }

  .nav-toggle {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .pillars-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}