:root {
  --blue1: #1f6fb2;
  --blue2: #0b3c61;
  --gradient: linear-gradient(135deg, var(--blue1), var(--blue2));
  --glass-bg: rgba(255, 255, 255, 0.25);
  --glass-border: rgba(255, 255, 255, 0.4);
  --radius: 12px;
  --shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  --font: "Trebuchet MS", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: #f4f7ff;
  color: #1a1a1a;
  overflow-x: hidden;
}

a {
  color: inherit;
}

.container {
  width: min(100% - 3rem, 1300px);
  margin-inline: auto;
}

/* HEADER */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid #e0e0e0;
}

.header-inner {
  padding-block: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
}

.nav a {
  text-decoration: none;
  display: inline-block;
  padding: 0.55rem 0.7rem;
  border-radius: var(--radius);
  transition: 0.3s;
  font-weight: 500;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 0.15rem;
}

.nav a:hover {
  background: var(--gradient);
  color: #fff;
}

/* HERO */
.hero {
  background: linear-gradient(135deg, rgba(31,111,178,0.9), rgba(11,60,97,0.9));
  padding-block: clamp(4rem, 10vw, 7rem);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background-image: url("https://images.unsplash.com/photo-1581579185169-1c0a5e3e1a0b?auto=format&fit=crop&w=1600&q=80");
  background-size: cover;
  background-position: center;
  opacity: 0.22;
  mix-blend-mode: soft-light;
  pointer-events: none;
}

.hero-inner {
  max-width: 1300px;
  margin: auto;
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-title {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  animation: fadeInUp 1s ease;
}

.hero-subtitle {
  max-width: 50ch;
  font-size: clamp(1rem, 2vw, 1.3rem);
  margin: 1.5rem 0 2.5rem;
  animation: fadeInUp 1.3s ease;
}

.btn-primary {
  display: inline-block;
  border: 0;
  text-align: center;
  text-decoration: none;
  background: #fff;
  color: var(--blue1);
  padding: 1rem 2rem;
  border-radius: var(--radius);
  font-weight: 700;
  box-shadow: var(--shadow);
  transition: 0.3s;
}

.btn-primary:hover {
  transform: translateY(-4px);
}

.btn-outline {
  display: inline-block;
  text-align: center;
  text-decoration: none;
  border: 2px solid #fff;
  color: #fff;
  padding: 1rem 2rem;
  border-radius: var(--radius);
  font-weight: 700;
  transition: 0.3s;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-buttons a {
  min-width: 12rem;
}

button,
input,
select,
textarea {
  font: inherit;
}

.btn-outline:hover {
  background: #fff;
  color: var(--blue1);
}

/* GLASS CARDS */
.hero-cards {
  display: grid;
  gap: 1.5rem;
}

.hero-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  padding: 1.8rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  color: #fff;
  font-size: 1.2rem;
  font-weight: 600;
  animation: fadeIn 1.5s ease;
}

/* SECTIONS */
.section {
  padding-block: clamp(3.5rem, 8vw, 5.5rem);
}

.section-title {
  margin-top: 0;
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 1rem;
}

.section-desc {
  max-width: 60ch;
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: #555;
  margin-bottom: 2.5rem;
}

/* SERVICE CARDS */
.grid {
  display: grid;
  gap: clamp(1rem, 2.5vw, 2rem);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}

.card {
  background: #fff;
  padding: clamp(1.25rem, 3vw, 2rem);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-6px);
}

/* GALLERY */
.gallery {
  display: grid;
  gap: clamp(1rem, 2.5vw, 2rem);
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
}

.gallery-item {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.gallery-img {
  background: #fff;
  border-radius: var(--radius);
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  font-weight: 600;
  font-size: 1.1rem;
}

/* CONTACT */
.contact-grid {
  display: grid;
  gap: clamp(2rem, 5vw, 4rem);
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
}

#contact-form input,
#contact-form select,
#contact-form textarea {
  width: 100%;
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid #d0d0d0;
  margin-bottom: 1.2rem;
  font-size: 1rem;
}

#contact-form button {
  width: 100%;
}

#contact-form input:focus,
#contact-form select:focus,
#contact-form textarea:focus {
  outline: 3px solid rgba(31, 111, 178, 0.2);
  border-color: var(--blue1);
}

/* FOOTER */
.footer {
  text-align: center;
  padding: 2.5rem 0;
  color: #555;
  font-size: 0.95rem;
}

/* ANIMATIONS */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* RESPONSIVE FIXES */

@media (max-width: 900px) {
  .container {
    width: min(100% - 2rem, 700px);
  }

  .header-inner {
    align-items: flex-start;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero-inner {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .container {
    width: min(100% - 1.5rem, 520px);
  }

  .header-inner {
    display: block;
  }

  .nav {
    justify-content: flex-start;
    margin-top: 0.85rem;
    flex-wrap: wrap;
    padding-bottom: 0.25rem;
  }

  .nav a {
    padding-inline: 0.55rem;
    font-size: 0.9rem;
  }

  .hero {
    padding-block: 4rem;
  }

  .hero-subtitle {
    margin-block: 1.25rem 2rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn-primary,
  .btn-outline {
    width: 100%;
  }

  .hero-buttons a {
    min-width: 0;
  }

  .hero-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hero-card {
    padding: 1rem 0.75rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 420px) {
  .hero-cards {
    grid-template-columns: 1fr;
  }

  .gallery-item {
    grid-template-columns: 1fr;
  }

  .gallery-img {
    min-height: 110px;
  }
}