/* =========================================================
   NeoBinary Technologies — Design System
   Clean, professional, corporate. Bootstrap 5.3 base.
   ========================================================= */

:root {
  /* Brand palette */
  --nb-navy: #0A2540;
  --nb-navy-deep: #071A2E;
  --nb-blue: #1E5AFF;
  --nb-blue-dark: #1544C4;
  --nb-teal: #00B8A9;
  --nb-teal-dark: #00968A;
  --nb-orange: #FF7A1A;
  --nb-orange-dark: #E5650A;
  --nb-light: #F6F8FB;
  --nb-light-alt: #EEF2F8;
  --nb-white: #FFFFFF;
  --nb-ink: #14213D;
  --nb-body: #4B5A72;
  --nb-border: #E3E8F0;

  --nb-font-head: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --nb-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --nb-radius: 0.75rem;
  --nb-radius-lg: 1.25rem;
  --nb-shadow-sm: 0 2px 10px rgba(10, 37, 64, 0.06);
  --nb-shadow-md: 0 10px 30px rgba(10, 37, 64, 0.10);
  --nb-shadow-lg: 0 20px 50px rgba(10, 37, 64, 0.16);

  /* Bootstrap variable overrides */
  --bs-primary: var(--nb-blue);
  --bs-body-font-family: var(--nb-font-body);
  --bs-body-color: var(--nb-body);
  --bs-link-color: var(--nb-blue);
  --bs-link-hover-color: var(--nb-blue-dark);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--nb-font-body);
  color: var(--nb-body);
  background-color: var(--nb-white);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6,
.font-head {
  font-family: var(--nb-font-head);
  color: var(--nb-navy);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.display-1, .display-2, .display-3, .display-4, .display-5, .display-6 {
  font-family: var(--nb-font-head);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.lead { font-size: 1.15rem; font-weight: 400; }

a { text-decoration: none; }

.text-navy { color: var(--nb-navy) !important; }
.text-blue { color: var(--nb-blue) !important; }
.text-teal { color: var(--nb-teal) !important; }
.text-orange { color: var(--nb-orange) !important; }
.text-body-soft { color: var(--nb-body) !important; }

.bg-navy { background-color: var(--nb-navy) !important; }
.bg-navy-deep { background-color: var(--nb-navy-deep) !important; }
.bg-blue { background-color: var(--nb-blue) !important; }
.bg-teal { background-color: var(--nb-teal) !important; }
.bg-orange { background-color: var(--nb-orange) !important; }
.bg-soft { background-color: var(--nb-light) !important; }
.bg-soft-alt { background-color: var(--nb-light-alt) !important; }

/* -------------------- Buttons -------------------- */
.btn { font-weight: 600; border-radius: 0.5rem; padding: 0.65rem 1.5rem; transition: all 0.2s ease; }
.btn-sm { padding: 0.4rem 1rem; }
.btn-lg { padding: 0.85rem 2rem; font-size: 1.05rem; }

.btn-primary {
  background-color: var(--nb-blue);
  border-color: var(--nb-blue);
}
.btn-primary:hover, .btn-primary:focus {
  background-color: var(--nb-blue-dark);
  border-color: var(--nb-blue-dark);
  transform: translateY(-1px);
}

.btn-orange {
  background-color: var(--nb-orange);
  border-color: var(--nb-orange);
  color: #fff;
}
.btn-orange:hover, .btn-orange:focus {
  background-color: var(--nb-orange-dark);
  border-color: var(--nb-orange-dark);
  color: #fff;
  transform: translateY(-1px);
}

.btn-outline-light-navy {
  color: var(--nb-white);
  border: 1.5px solid rgba(255,255,255,0.55);
  background: transparent;
}
.btn-outline-light-navy:hover {
  background: rgba(255,255,255,0.12);
  border-color: #fff;
  color: #fff;
}

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

.btn-teal {
  background-color: var(--nb-teal);
  border-color: var(--nb-teal);
  color: #fff;
}
.btn-teal:hover {
  background-color: var(--nb-teal-dark);
  border-color: var(--nb-teal-dark);
  color: #fff;
}

/* -------------------- Navbar -------------------- */
.nb-navbar {
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: saturate(180%) blur(8px);
  box-shadow: 0 1px 0 rgba(10,37,64,0.06);
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
  transition: box-shadow 0.2s ease;
}

.nb-logo { display: flex; align-items: center; gap: 0.6rem; }
.nb-logo-mark {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--nb-blue), var(--nb-navy));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-family: var(--nb-font-head); font-weight: 700; font-size: 1.05rem;
  box-shadow: var(--nb-shadow-sm);
  flex-shrink: 0;
}
.nb-logo-text { font-family: var(--nb-font-head); font-weight: 700; font-size: 1.28rem; color: var(--nb-navy); line-height: 1.1; }
.nb-logo-text span { color: var(--nb-blue); }
.nb-logo-tagline { font-size: 0.62rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--nb-teal); font-weight: 600; }

.navbar-nav .nav-link {
  color: var(--nb-navy);
  font-weight: 500;
  padding: 0.55rem 1rem !important;
  border-radius: 0.5rem;
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus { color: var(--nb-blue); }
.navbar-nav .nav-link.active {
  color: var(--nb-blue);
  font-weight: 600;
}
.dropdown-menu {
  border: none;
  box-shadow: var(--nb-shadow-md);
  border-radius: var(--nb-radius);
  padding: 0.5rem;
}
.dropdown-item { border-radius: 0.5rem; padding: 0.55rem 0.9rem; font-weight: 500; }
.dropdown-item:hover, .dropdown-item:focus { background-color: var(--nb-light); color: var(--nb-blue); }
.dropdown-item small { display: block; color: var(--nb-body); font-weight: 400; }

/* -------------------- Hero -------------------- */
.nb-hero {
  position: relative;
  background: linear-gradient(160deg, var(--nb-navy-deep) 0%, var(--nb-navy) 55%, var(--nb-blue-dark) 130%);
  overflow: hidden;
}
.nb-hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 85% 15%, rgba(0,184,169,0.28), transparent 45%),
    radial-gradient(circle at 15% 85%, rgba(30,90,255,0.30), transparent 45%);
  pointer-events: none;
}
.nb-hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  color: #fff;
  padding: 0.4rem 0.9rem;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 600;
}
.nb-page-header {
  background: linear-gradient(160deg, var(--nb-navy-deep) 0%, var(--nb-navy) 60%, var(--nb-blue-dark) 140%);
  position: relative;
  overflow: hidden;
}
.nb-page-header::before {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(circle at 90% 10%, rgba(0,184,169,0.25), transparent 45%);
}

/* Simple decorative grid/dot pattern used behind hero graphics */
.nb-dot-grid {
  background-image: radial-gradient(rgba(255,255,255,0.35) 1.5px, transparent 1.5px);
  background-size: 18px 18px;
}

/* -------------------- Cards -------------------- */
.nb-card {
  background: var(--nb-white);
  border: 1px solid var(--nb-border);
  border-radius: var(--nb-radius-lg);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.nb-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--nb-shadow-md);
  border-color: transparent;
}
.nb-icon-tile {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}
.nb-icon-tile.tile-blue { background: rgba(30,90,255,0.10); color: var(--nb-blue); }
.nb-icon-tile.tile-teal { background: rgba(0,184,169,0.12); color: var(--nb-teal-dark); }
.nb-icon-tile.tile-orange { background: rgba(255,122,26,0.12); color: var(--nb-orange-dark); }
.nb-icon-tile.tile-navy { background: rgba(10,37,64,0.08); color: var(--nb-navy); }

.nb-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.32rem 0.7rem;
  border-radius: 50px;
}
.nb-badge-blue { background: rgba(30,90,255,0.10); color: var(--nb-blue); }
.nb-badge-teal { background: rgba(0,184,169,0.14); color: var(--nb-teal-dark); }
.nb-badge-orange { background: rgba(255,122,26,0.14); color: var(--nb-orange-dark); }

.nb-eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--nb-teal-dark);
}

/* -------------------- Stats -------------------- */
.nb-stat-num {
  font-family: var(--nb-font-head);
  font-weight: 700;
  font-size: 2.4rem;
  color: var(--nb-navy);
  line-height: 1;
}
.nb-stat-strip .nb-stat-num { color: #fff; }
.nb-stat-strip { background: var(--nb-navy); }

/* -------------------- Section spacing -------------------- */
.nb-section { padding-top: 5.5rem; padding-bottom: 5.5rem; }
@media (max-width: 767.98px) {
  .nb-section { padding-top: 3.25rem; padding-bottom: 3.25rem; }
}

/* -------------------- Course tabs / pills -------------------- */
.nb-course-nav .nav-link {
  border-radius: 50px;
  font-weight: 600;
  color: var(--nb-navy);
  padding: 0.6rem 1.35rem;
  border: 1.5px solid var(--nb-border);
  margin: 0.25rem;
}
.nb-course-nav .nav-link.active {
  background: var(--nb-blue);
  border-color: var(--nb-blue);
  color: #fff;
}

/* -------------------- Accordion -------------------- */
.accordion-button {
  font-weight: 600;
  color: var(--nb-navy);
  border-radius: 0.6rem !important;
}
.accordion-button:not(.collapsed) {
  background-color: rgba(30,90,255,0.06);
  color: var(--nb-blue-dark);
  box-shadow: none;
}
.accordion-button:focus { box-shadow: 0 0 0 0.2rem rgba(30,90,255,0.15); }
.accordion-item { border: 1px solid var(--nb-border); border-radius: 0.75rem !important; overflow: hidden; margin-bottom: 0.75rem; }
.accordion-item:first-of-type, .accordion-item:last-of-type { border-radius: 0.75rem; }

/* -------------------- Process steps (DMIT) -------------------- */
.nb-step {
  position: relative;
  padding-left: 0;
}
.nb-step-num {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--nb-navy);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--nb-font-head);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* -------------------- Testimonials -------------------- */
.nb-quote-mark {
  font-family: Georgia, serif;
  font-size: 3.5rem;
  line-height: 1;
  color: var(--nb-blue);
  opacity: 0.25;
}
.nb-avatar {
  width: 50px; height: 50px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--nb-font-head);
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

/* -------------------- Forms -------------------- */
.nb-form-card {
  background: #fff;
  border-radius: var(--nb-radius-lg);
  box-shadow: var(--nb-shadow-md);
  border: 1px solid var(--nb-border);
}
.form-label { font-weight: 600; color: var(--nb-navy); font-size: 0.9rem; }
.form-control, .form-select {
  padding: 0.65rem 0.9rem;
  border-radius: 0.55rem;
  border-color: var(--nb-border);
}
.form-control:focus, .form-select:focus {
  border-color: var(--nb-blue);
  box-shadow: 0 0 0 0.2rem rgba(30,90,255,0.15);
}
.nb-form-tabs .nav-link {
  font-weight: 700;
  color: var(--nb-body);
  border: none;
  border-bottom: 3px solid transparent;
  border-radius: 0;
  padding: 0.85rem 1.25rem;
}
.nb-form-tabs .nav-link.active {
  color: var(--nb-blue);
  border-bottom-color: var(--nb-blue);
  background: transparent;
}

/* -------------------- Footer -------------------- */
.nb-footer { background: var(--nb-navy-deep); color: rgba(255,255,255,0.72); }
.nb-footer h6 { color: #fff; font-family: var(--nb-font-head); font-weight: 600; margin-bottom: 1.1rem; }
.nb-footer a { color: rgba(255,255,255,0.72); }
.nb-footer a:hover { color: var(--nb-teal); }
.nb-footer .nb-logo-text { color: #fff; }
.nb-social {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  transition: background 0.2s ease;
}
.nb-social:hover { background: var(--nb-blue); color: #fff; }
.nb-footer-bottom { border-top: 1px solid rgba(255,255,255,0.10); }

/* -------------------- Misc utilities -------------------- */
.nb-back-to-top {
  position: fixed;
  bottom: 1.75rem; right: 1.75rem;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--nb-blue);
  color: #fff;
  display: none; align-items: center; justify-content: center;
  box-shadow: var(--nb-shadow-md);
  z-index: 1040;
  border: none;
  transition: transform 0.2s ease, background 0.2s ease;
}
.nb-back-to-top:hover { background: var(--nb-blue-dark); transform: translateY(-3px); }
.nb-back-to-top.show { display: flex; }

.nb-divider-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--nb-teal); display: inline-block; }

.nb-toast-success .toast-header { background: rgba(0,184,169,0.12); color: var(--nb-teal-dark); }

.nb-marquee-logo {
  filter: grayscale(100%);
  opacity: 0.55;
  transition: all 0.2s ease;
}
.nb-marquee-logo:hover { filter: none; opacity: 1; }

.ratio-hero-graphic { aspect-ratio: 1 / 1; max-width: 460px; }

.nb-value-num {
  font-family: var(--nb-font-head);
  font-weight: 700;
  font-size: 1.4rem;
  color: rgba(10,37,64,0.15);
}

/* Fade-in-on-scroll (progressive enhancement; JS toggles .in-view) */
.nb-reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.nb-reveal.in-view { opacity: 1; transform: translateY(0); }

.cursor-pointer { cursor: pointer; }