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

:root {
  --navy: #303841;
  --navy-light: #76ABAE;
  --slate: #4d5d67;
  --slate-light: #8eaaac;
  --text: #303841;
  --text-muted: #5a6872;
  --bg: #F5F5F5;
  --bg-alt: #EBEBEB;
  --border: #d6dbdb;
  --accent: #FF5722;
  --accent-hover: #e64a1e;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(48,56,65,0.08), 0 4px 16px rgba(48,56,65,0.06);
  --shadow-hover: 0 4px 12px rgba(48,56,65,0.12), 0 12px 32px rgba(48,56,65,0.1);
  --transition: 0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Roboto', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ===== LAYOUT ===== */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

/* ===== TYPOGRAPHY ===== */
h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); font-weight: 700; line-height: 1.12; letter-spacing: -0.03em; color: var(--text); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; color: var(--text); }
h3 { font-size: 1.15rem; font-weight: 600; line-height: 1.35; color: var(--text); }
h4 { font-size: 0.95rem; font-weight: 600; color: var(--text); }
p { color: var(--text-muted); }

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy-light);
  margin-bottom: 14px;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-header h2 { margin-bottom: 16px; }
.section-header p { font-size: 1.05rem; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
  white-space: nowrap;
}

.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 4px 16px rgba(255,87,34,0.35); }

.btn-outline {
  background: transparent;
  color: var(--navy);
  border: 1.5px solid var(--navy-light);
}
.btn-outline:hover { background: var(--navy-light); color: #fff; border-color: var(--navy-light); }

.btn-ghost {
  background: transparent;
  color: var(--slate);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover { border-color: var(--slate); color: var(--text); }

/* ===== NAV ===== */
.nav-wrapper {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--navy);
}

.logo-icon {
  height: 40px;
  width: auto;
  display: block;
}

.footer-logo {
  filter: brightness(0) invert(1);
}

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

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--slate);
  text-decoration: none;
  transition: color var(--transition);
}
.nav-links a:not(.btn):hover { color: var(--navy); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

/* ===== HERO ===== */
.hero {
  padding: 96px 0 80px;
  background: linear-gradient(160deg, #EBEBEB 0%, #F5F5F5 60%);
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  max-width: 680px;
}

.hero-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy-light);
  background: rgba(118,171,174,0.15);
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero h1 { margin-bottom: 20px; }

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 36px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ===== SERVICES / CARDS ===== */
.services { background: var(--bg-alt); }

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(118,171,174,0.15);
  border-radius: 10px;
  margin-bottom: 20px;
  color: var(--navy-light);
}

.card-icon svg { width: 22px; height: 22px; }

.card h3 { margin-bottom: 12px; }
.card > p { font-size: 0.9rem; margin-bottom: 20px; }

.card-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-list li {
  font-size: 0.85rem;
  color: var(--slate);
  padding-left: 16px;
  position: relative;
}

.card-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--navy-light);
}

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

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.about-text h2 { margin-bottom: 20px; }
.about-text p { margin-bottom: 16px; font-size: 1rem; }
.about-text p:last-child { margin-bottom: 0; }

.pillars {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.pillar {
  padding-left: 20px;
  border-left: 2px solid var(--border);
  transition: border-color var(--transition);
}

.pillar:hover { border-left-color: var(--navy-light); }

.pillar-num {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--navy-light);
  margin-bottom: 6px;
}

.pillar h4 { margin-bottom: 6px; }
.pillar p { font-size: 0.875rem; }

/* ===== CONTACT ===== */
.contact { background: var(--bg-alt); }

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: start;
}

.contact-text h2 { margin-bottom: 16px; }
.contact-text > p { font-size: 1rem; margin-bottom: 32px; }

.contact-details { display: flex; flex-direction: column; gap: 12px; }

.contact-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--navy);
  text-decoration: none;
  transition: color var(--transition);
}

.contact-link:hover { color: var(--navy-light); }
.contact-link svg { width: 16px; height: 16px; flex-shrink: 0; }

/* FORM */
.contact-form {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.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: 0.8rem;
  font-weight: 600;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--slate-light); }

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--navy-light);
  box-shadow: 0 0 0 3px rgba(118,171,174,0.2);
}

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

.form-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 36px;
  box-shadow: var(--shadow);
  gap: 12px;
}

.form-success svg {
  width: 48px;
  height: 48px;
  color: var(--navy-light);
  margin-bottom: 8px;
}

.form-success h3 { color: var(--text); }
.form-success p { font-size: 0.95rem; }

/* ===== FOOTER ===== */
.footer {
  background: var(--text);
  padding: 40px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.nav-logo span { color: var(--navy-light); }
.footer .nav-logo { color: #fff; }
.footer .nav-logo span { color: #76ABAE; }

.footer-copy {
  font-size: 0.8rem;
  color: #6B7A8D;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 0.8rem;
  color: #6B7A8D;
  text-decoration: none;
  transition: color var(--transition);
}
.footer-links a:hover { color: #fff; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .cards {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }

  .about-inner,
  .contact-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 640px) {
  .section { padding: 64px 0; }
  .hero { padding: 64px 0 56px; }

  .nav-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    padding: 8px 0 16px;
  }

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

  .nav-links li { width: 100%; }

  .nav-links a {
    display: block;
    padding: 12px 24px;
    border-radius: 0;
  }

  .nav-links .btn {
    margin: 8px 24px 0;
    width: calc(100% - 48px);
    justify-content: center;
  }

  .nav-toggle { display: flex; }
  .nav { position: relative; }

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

  .contact-form { padding: 24px; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 16px; }
}