*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --navy: #0d1b2a;
  --blue: #1565c0;
  --blue-light: #1e88e5;
  --accent: #00b4d8;
  --text: #1a1a2e;
  --text-muted: #5a6a7a;
  --bg: #ffffff;
  --bg-soft: #f4f7fb;
  --border: #e0e7ef;
  --radius: 8px;
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
  height: 64px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.25);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo {
  width: 36px;
  height: 36px;
  background: var(--accent);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  color: var(--navy);
  letter-spacing: -1px;
}

.nav-name {
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition);
}

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

.nav-cta {
  background: var(--accent);
  color: var(--navy) !important;
  padding: 8px 20px;
  border-radius: var(--radius);
  font-weight: 600 !important;
  transition: opacity var(--transition) !important;
}

.nav-cta:hover {
  opacity: 0.85;
  color: var(--navy) !important;
}

/* ── HERO ── */
#hero {
  min-height: 100vh;
  background: var(--navy);
  display: flex;
  align-items: center;
  padding: 120px 5% 80px;
  position: relative;
  overflow: hidden;
}

#hero::before {
  content: "";
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,180,216,0.12) 0%, transparent 70%);
  pointer-events: none;
}

#hero::after {
  content: "";
  position: absolute;
  bottom: -150px;
  left: -100px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(21,101,192,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,180,216,0.12);
  border: 1px solid rgba(0,180,216,0.3);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 99px;
  margin-bottom: 28px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.hero-badge::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--accent);
  border-radius: 50%;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

h1 span {
  color: var(--accent);
}

.hero-sub {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.65);
  max-width: 560px;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--navy);
}

.btn-primary:hover {
  background: #00caf0;
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: rgba(255,255,255,0.85);
  border: 1.5px solid rgba(255,255,255,0.25);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

/* ── SECTIONS COMMON ── */
section {
  padding: 90px 5%;
}

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--blue-light);
  margin-bottom: 12px;
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.3px;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 56px;
}

/* ── SERVICES ── */
#services {
  background: var(--bg-soft);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 32px 28px;
  transition: all var(--transition);
}

.service-card:hover {
  border-color: var(--accent);
  box-shadow: 0 8px 32px rgba(0,180,216,0.1);
  transform: translateY(-3px);
}

.service-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--accent) 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 22px;
}

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.service-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── ABOUT ── */
#about {
  background: var(--bg);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text h2 {
  margin-bottom: 16px;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  font-size: 0.97rem;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 36px;
}

.stat {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--blue);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.about-visual {
  background: linear-gradient(135deg, var(--navy) 0%, #1a2f4a 100%);
  border-radius: 16px;
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.code-block {
  background: rgba(0,0,0,0.3);
  border-radius: 8px;
  padding: 16px 20px;
  font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
  font-size: 13px;
  color: rgba(255,255,255,0.85);
  line-height: 1.6;
}

.code-block .kw { color: var(--accent); }
.code-block .str { color: #a5d6a7; }
.code-block .num { color: #ffcc80; }
.code-block .comment { color: rgba(255,255,255,0.35); }

/* ── CONTACT ── */
#contact {
  background: var(--navy);
}

#contact h2, #contact .section-label {
  color: #ffffff;
}

#contact .section-label {
  color: var(--accent);
}

#contact .section-desc {
  color: rgba(255,255,255,0.6);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 56px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-item-icon {
  width: 40px;
  height: 40px;
  background: rgba(0,180,216,0.12);
  border: 1px solid rgba(0,180,216,0.25);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.contact-item-text h4 {
  color: rgba(255,255,255,0.5);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.contact-item-text p,
.contact-item-text a {
  color: rgba(255,255,255,0.85);
  font-size: 0.95rem;
  text-decoration: none;
  transition: color var(--transition);
}

.contact-item-text a:hover {
  color: var(--accent);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: rgba(255,255,255,0.6);
}

.form-group input,
.form-group textarea,
.form-group select {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 14px;
  color: rgba(255,255,255,0.9);
  font-family: inherit;
  transition: border-color var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255,255,255,0.25);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  background: rgba(0,180,216,0.06);
}

.form-group select option {
  background: var(--navy);
}

.form-submit {
  align-self: flex-start;
}

/* ── FOOTER ── */
footer {
  background: #07111c;
  padding: 40px 5%;
  text-align: center;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-copy {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  color: rgba(255,255,255,0.35);
  text-decoration: none;
  font-size: 13px;
  transition: color var(--transition);
}

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

/* ── TOAST ── */
.toast {
  position: fixed;
  bottom: 32px;
  right: 32px;
  background: var(--accent);
  color: var(--navy);
  font-weight: 600;
  font-size: 14px;
  padding: 14px 24px;
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
  transform: translateY(80px);
  opacity: 0;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 999;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  nav {
    padding: 0 4%;
  }

  .nav-links {
    display: none;
  }

  section {
    padding: 64px 4%;
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-visual {
    display: none;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}