:root {
  --bg: #060816;
  --surface: rgba(19, 24, 47, 0.68);
  --text: #eef2ff;
  --muted: #b7c0e6;
  --accent: #7c5cff;
  --accent-2: #21d4fd;
  --border: rgba(255, 255, 255, 0.14);
  --input-bg: rgba(255, 255, 255, 0.05);
}

body[data-theme="light"] {
  --bg: #eef3ff;
  --surface: rgba(255, 255, 255, 0.82);
  --text: #0d1632;
  --muted: #516080;
  --accent: #5d4bff;
  --accent-2: #0096c9;
  --border: rgba(15, 35, 90, 0.15);
  --input-bg: rgba(12, 29, 75, 0.04);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 10% 10%, #111635, var(--bg) 50%);
  min-height: 100vh;
  line-height: 1.5;
}

.bg-aurora {
  position: fixed;
  inset: -40vh -10vw auto;
  height: 70vh;
  background: radial-gradient(circle at 30% 40%, rgba(124, 92, 255, 0.45), transparent 55%),
    radial-gradient(circle at 70% 20%, rgba(33, 212, 253, 0.35), transparent 45%);
  filter: blur(48px);
  pointer-events: none;
  z-index: -1;
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 0;
}

.brand {
  display: inline-flex;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
}

.brand-mark {
  color: var(--accent-2);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.lang-switch {
  display: inline-flex;
  gap: 0.4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.3rem;
}

.toggle-btn {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.5rem 0.65rem;
  font-weight: 600;
  cursor: pointer;
}

.toggle-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  border-color: transparent;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
}

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

.hero {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2rem;
  padding: 3rem 0 2rem;
}

.chip {
  display: inline-block;
  font-size: 0.88rem;
  background: rgba(124, 92, 255, 0.2);
  border: 1px solid rgba(124, 92, 255, 0.5);
  border-radius: 999px;
  padding: 0.3rem 0.7rem;
}

h1 {
  font-size: clamp(2rem, 4.8vw, 3.5rem);
  line-height: 1.1;
  margin: 0.8rem 0 1rem;
}

.lead {
  color: var(--muted);
  max-width: 62ch;
}

.hero-actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  text-decoration: none;
  border: none;
  border-radius: 12px;
  padding: 0.8rem 1.1rem;
  font-weight: 600;
}

.btn:hover {
  filter: brightness(1.08);
}

.btn-sm {
  padding: 0.6rem 0.9rem;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
}

.metrics {
  display: flex;
  gap: 1.2rem;
  margin-top: 1.4rem;
}

.metrics div {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.7rem 0.9rem;
}

.metrics strong {
  display: block;
}

.metrics span {
  color: var(--muted);
  font-size: 0.85rem;
}

.hero-card,
.card,
.project,
.step,
blockquote,
.cta {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  backdrop-filter: blur(6px);
}

.hero-card {
  padding: 1.2rem;
}

.hero-visual {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin-bottom: 0.9rem;
  background: rgba(0, 0, 0, 0.2);
}

.hero-card ul {
  padding-left: 1.2rem;
  margin: 0;
}

.section {
  padding: 2.2rem 0;
}

.section-title p {
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
  margin: 0;
}

.section-title h2 {
  margin-top: 0.4rem;
  font-size: clamp(1.45rem, 3vw, 2.2rem);
}

.grid {
  display: grid;
  gap: 1rem;
}

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

.card,
.project {
  padding: 1rem;
}

.project-visual {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin-bottom: 0.8rem;
  background: rgba(0, 0, 0, 0.18);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.9rem;
}

.step {
  padding: 1rem;
}

.step span {
  color: var(--accent-2);
  font-weight: 700;
}

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

blockquote {
  margin: 0;
  padding: 1.2rem;
  color: #dbe4ff;
}

blockquote footer {
  margin-top: 0.8rem;
  color: var(--muted);
}

.cta {
  text-align: center;
  padding: 2rem;
}

.lead-form {
  display: grid;
  gap: 0.8rem;
  width: min(620px, 100%);
  margin: 1rem auto;
}

.lead-form input,
.lead-form textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--input-bg);
  color: var(--text);
  padding: 0.8rem 0.9rem;
  font: inherit;
}

.lead-form input::placeholder,
.lead-form textarea::placeholder {
  color: var(--muted);
}

.lead-form .smart-captcha {
  justify-self: center;
  margin: 0.2rem 0;
}

.form-status {
  min-height: 1.4em;
  margin: 0.2rem 0 1rem;
  color: var(--muted);
}

.form-status.success {
  color: #22c55e;
}

.form-status.error {
  color: #f87171;
}

.footer {
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 930px) {
  .hero,
  .cards,
  .timeline,
  .portfolio {
    grid-template-columns: 1fr;
  }

  .nav {
    display: none;
  }

  .header-controls {
    margin-left: auto;
  }
}