:root {
  /* Light theme based on EduCraft logo */
  --bg: #f5f8fb;
  --bg-alt: #d4e3ed;
  --text: #001e3a;
  --muted: #4b5563;
  --primary: #00639d;     /* main logo blue */
  --accent: #7eabca;      /* lighter blue accent */
  --card-bg: #ffffff;
  --nav-bg: #ffffff;
  --border: #d4e3ed;
  --shadow-soft: 0 18px 40px rgba(15, 23, 42, 0.08);
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background-color: var(--bg);
  color: var(--text);
}

/* Dark theme using same blue family */
body.dark-theme {
  --bg: #020817;
  --bg-alt: #020817;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --primary: #3ba7ff;   /* bright variant of logo blue */
  --accent: #7eabca;    /* keep accent consistent */
  --card-bg: #020617;
  --nav-bg: #020617;
  --border: #1f2937;
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.65);
}

.navbar {
  background-color: var(--nav-bg) !important;
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.navbar-brand span {
  font-weight: 700;
  letter-spacing: 0.05em;
}

.nav-link {
  font-weight: 500;
}

.nav-link.active {
  color: var(--primary) !important;
}

.theme-toggle-btn {
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
}

/* Hero */
.hero-section {
  padding: 5rem 0 4rem;
  background:
    radial-gradient(circle at top left, rgba(0, 99, 157, 0.18), transparent),
    radial-gradient(circle at bottom right, rgba(126, 171, 202, 0.25), transparent);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  padding: 0.25rem 0.9rem;
  border-radius: 999px;
  background-color: rgba(15, 23, 42, 0.04);
  border: 1px solid rgba(148, 163, 184, 0.4);
}

.hero-title {
  font-size: clamp(2.2rem, 3.4vw, 3rem);
  font-weight: 700;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--muted);
}

.btn-main {
  background: linear-gradient(135deg, var(--primary), #001e3a);
  color: #fff;
  border-radius: 999px;
  padding: 0.7rem 1.8rem;
  border: none;
  font-weight: 600;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.18);
}

.btn-main:hover {
  opacity: 0.95;
  color: #fff;
}

.btn-outline-main {
  border-radius: 999px;
  padding: 0.7rem 1.6rem;
  border: 1px solid rgba(148, 163, 184, 0.7);
  font-weight: 500;
}

/* Cards */
.feature-card,
.service-card,
.stat-card {
  background-color: var(--card-bg);
  border-radius: 1.2rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.feature-card {
  padding: 1.6rem 1.5rem;
}

.service-card {
  padding: 1.6rem 1.5rem;
  height: 100%;
}

.stat-card {
    padding: 3.2rem 4.3rem;
}

.section-title {
  font-size: 1.7rem;
  font-weight: 700;
}

.section-subtitle {
  color: var(--muted);
  max-width: 620px;
}

/* Services pills */
.service-pill {
  font-size: 0.8rem;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  color: var(--muted);
}

/* Contact */
.contact-card {
  background-color: var(--card-bg);
  border-radius: 1.3rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  padding: 2rem;
}

.form-control,
.form-select {
  background-color: transparent;
  border-radius: 0.9rem;
  border-color: rgba(148, 163, 184, 0.7);
  color: var(--text);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px rgba(0, 99, 157, 0.35);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0 1.5rem;
  background-color: var(--nav-bg);
  color: var(--muted);
}

/* Utility */
.badge-soft {
  background-color: rgba(0, 99, 157, 0.08);
  color: var(--primary);
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
}

.text-muted-soft {
  color: var(--muted);
}

/* Responsive */
@media (max-width: 991.98px) {
  .hero-section {
    padding-top: 4rem;
  }
}