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

:root {
  --blue-dark:  #0a1628;
  --blue-mid:   #0d2d5e;
  --blue-bright:#1a6fdf;
  --blue-glow:  #2b91ff;
  --accent:     #00cfff;
  --white:      #ffffff;
  --gray:       #8a9ab5;
  --card-bg:    #0f1f3d;
  --section-bg: #07101f;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--blue-dark);
  color: var(--white);
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(43, 145, 255, 0.15);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
  letter-spacing: -0.5px;
}
.logo span { color: var(--accent); }

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}
.nav-links a {
  color: var(--gray);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }

/* ===== Button ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: linear-gradient(135deg, var(--blue-bright), var(--accent));
  color: var(--white);
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 207, 255, 0.35);
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at 70% 50%, rgba(26, 111, 223, 0.18) 0%, transparent 60%),
              var(--blue-dark);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 640px;
  padding-top: 64px;
}

.hero-content h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, var(--white) 40%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.15rem;
  color: var(--gray);
  margin-bottom: 2rem;
}

/* Decorative orb */
.hero-orb {
  position: absolute;
  right: -80px;
  top: 50%;
  transform: translateY(-50%);
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43, 145, 255, 0.25) 0%, rgba(0, 207, 255, 0.08) 50%, transparent 70%);
  animation: pulse 6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: translateY(-50%) scale(1); opacity: 0.7; }
  50%       { transform: translateY(-50%) scale(1.06); opacity: 1; }
}

/* ===== Sections ===== */
.section {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  text-align: center;
  color: var(--gray);
  font-size: 1.05rem;
  margin-bottom: 3rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== About ===== */
.about { background: var(--section-bg); }

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.about-card {
  background: var(--card-bg);
  border: 1px solid rgba(43, 145, 255, 0.15);
  border-radius: 16px;
  padding: 2rem 1.5rem;
  text-align: center;
  transition: transform 0.25s, border-color 0.25s;
}
.about-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 207, 255, 0.4);
}
.about-card .icon { font-size: 2rem; margin-bottom: 1rem; }
.about-card h3 { margin-bottom: 0.5rem; font-size: 1.15rem; }
.about-card p  { color: var(--gray); font-size: 0.95rem; }

/* ===== Services ===== */
.services { background: var(--blue-dark); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--card-bg);
  border: 1px solid rgba(43, 145, 255, 0.12);
  border-radius: 16px;
  padding: 2rem;
  transition: transform 0.25s, box-shadow 0.25s;
}
.service-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 32px rgba(0, 207, 255, 0.12);
}
.service-icon { font-size: 2rem; margin-bottom: 1rem; }
.service-card h3 { margin-bottom: 0.5rem; font-size: 1.1rem; }
.service-card p  { color: var(--gray); font-size: 0.93rem; }

/* ===== Contact ===== */
.contact { background: var(--section-bg); }

.contact-form {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

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

.contact-form input,
.contact-form textarea {
  background: var(--card-bg);
  border: 1px solid rgba(43, 145, 255, 0.2);
  border-radius: 10px;
  padding: 0.85rem 1.1rem;
  color: var(--white);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s;
  width: 100%;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: var(--gray); }

.contact-form .btn { align-self: flex-start; }

.form-msg {
  font-size: 0.9rem;
  margin-top: 0.25rem;
  min-height: 1.2em;
  color: var(--accent);
}

/* ===== Footer ===== */
.footer {
  background: var(--blue-dark);
  border-top: 1px solid rgba(43, 145, 255, 0.12);
  padding: 1.75rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer p { color: var(--gray); font-size: 0.88rem; }

/* ===== Responsive ===== */
@media (max-width: 600px) {
  .nav-links { gap: 1.2rem; }
  .form-row { grid-template-columns: 1fr; }
  .hero-orb { display: none; }
  .contact-form .btn { width: 100%; text-align: center; }
}