/* ── VARIABLES ───────────────────────────────────────── */
:root {
    --navy:       #1A3C5E;
    --navy-dark:  #0f2540;
    --navy-mid:   #1e4570;
    --teal:       #0F6E56;
    --teal-light: #14896a;
    --purple:     #3C3489;
    --gold:       #C8941A;
    --gold-light: #f0b429;
    --cream:      #FAF8F4;
    --off-white:  #F2EFE9;
    --warm-grey:  #8a8070;
    --light-grey: #f5f7fa;
    --border:     #e8e4de;
    --white:      #ffffff;
    --black:      #1a1a1a;
    --shadow-sm:  0 2px 8px rgba(26,60,94,0.08);
    --shadow-md:  0 8px 24px rgba(26,60,94,0.12);
    --shadow-lg:  0 20px 60px rgba(26,60,94,0.16);
    --radius-sm:  6px;
    --radius-md:  10px;
    --radius-lg:  16px;
    --transition: all 0.25s ease;
  }
  
  /* ── RESET ───────────────────────────────────────────── */
  *, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  html {
    scroll-behavior: smooth;
    font-size: 16px;
  }
  
  body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--black);
    background: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
  }
  
  img {
    max-width: 100%;
    display: block;
  }
  
  a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
  }
  
  ul, ol {
    list-style: none;
  }
  
  button {
    cursor: pointer;
    font-family: inherit;
    border: none;
    background: none;
  }
  
  /* ── TYPOGRAPHY ──────────────────────────────────────── */
  h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    color: var(--navy);
  }
  
  h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
  h2 { font-size: clamp(1.6rem, 4vw, 2.5rem); }
  h3 { font-size: clamp(1.2rem, 3vw, 1.6rem); }
  h4 { font-size: 1.1rem; }
  
  p {
    color: var(--warm-grey);
    line-height: 1.75;
  }
  
  /* ── LAYOUT ──────────────────────────────────────────── */
  .container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
  }
  
  .section {
    padding: 96px 0;
  }
  
  .section-alt {
    background: var(--cream);
  }
  
  .section-dark {
    background: var(--navy-dark);
    color: var(--white);
  }
  
  .section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 64px;
  }
  
  .section-header .eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 12px;
  }
  
  .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 28px;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
  }
  
  .btn-primary {
    background: var(--navy);
    color: var(--white);
    border-color: var(--navy);
  }
  
  .btn-primary:hover {
    background: var(--navy-mid);
    border-color: var(--navy-mid);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
  }
  
  .btn-secondary {
    background: var(--white);
    color: var(--navy);
    border-color: var(--navy);
  }
  
  .btn-secondary:hover {
    background: var(--navy);
    color: var(--white);
  }
  
  .btn-gold {
    background: var(--gold);
    color: var(--navy-dark);
    border-color: var(--gold);
    font-weight: 700;
  }
  
  .btn-gold:hover {
    background: var(--gold-light);
    border-color: var(--gold-light);
    transform: translateY(-1px);
  }
  
  .btn-ghost {
    background: rgba(255,255,255,0.1);
    color: var(--white);
    border-color: rgba(255,255,255,0.3);
  }
  
  .btn-ghost:hover {
    background: rgba(255,255,255,0.2);
    border-color: rgba(255,255,255,0.6);
  }
  
  .btn-whatsapp {
    background: #25d366;
    color: var(--white);
    border-color: #25d366;
  }
  
  .btn-whatsapp:hover {
    background: #1ebe5d;
    border-color: #1ebe5d;
    transform: translateY(-1px);
  }
  
  /* ── CARDS ───────────────────────────────────────────── */
  .card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
  }
  
  .card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: var(--navy);
  }
  
  /* ── GRID ────────────────────────────────────────────── */
  .grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  
  .grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  
  .grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }
  
  /* ── WHATSAPP FLOAT ──────────────────────────────────── */
  .whatsapp-float {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 999;
    width: 56px;
    height: 56px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(37,211,102,0.4);
    transition: var(--transition);
  }
  
  .whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 28px rgba(37,211,102,0.5);
  }
  
  .whatsapp-float svg {
    width: 28px;
    height: 28px;
    fill: white;
  }
  
  /* ── UTILITIES ───────────────────────────────────────── */
  .text-center { text-align: center; }
  .text-navy   { color: var(--navy); }
  .text-teal   { color: var(--teal); }
  .text-gold   { color: var(--gold); }
  .text-white  { color: var(--white); }
  .text-grey   { color: var(--warm-grey); }
  
  .bg-navy     { background: var(--navy); }
  .bg-navy-dark{ background: var(--navy-dark); }
  .bg-cream    { background: var(--cream); }
  
  .fw-bold     { font-weight: 700; }
  .fw-medium   { font-weight: 500; }
  
  .mt-8  { margin-top: 8px; }
  .mt-16 { margin-top: 16px; }
  .mt-24 { margin-top: 24px; }
  .mt-32 { margin-top: 32px; }
  .mt-48 { margin-top: 48px; }
  
  .mb-8  { margin-bottom: 8px; }
  .mb-16 { margin-bottom: 16px; }
  .mb-24 { margin-bottom: 24px; }
  .mb-32 { margin-bottom: 32px; }
  .mb-48 { margin-bottom: 48px; }
  
  .d-flex         { display: flex; }
  .align-center   { align-items: center; }
  .justify-center { justify-content: center; }
  .gap-8  { gap: 8px; }
  .gap-16 { gap: 16px; }
  .gap-24 { gap: 24px; }
  
  /* ── RESPONSIVE ──────────────────────────────────────── */
  @media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
  }
  
  @media (max-width: 768px) {
    .section { padding: 64px 0; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .section-header { margin-bottom: 40px; }
  }
  
  @media (max-width: 480px) {
    .container { padding: 0 16px; }
    .btn { padding: 10px 20px; font-size: 0.85rem; }
  }

  /* ── LOGO IMAGES ─────────────────────────────────────── */
.hero-brand-icon {
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand-card-logo {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Navbar — light background, show logo as-is */
.navbar-logo img {
  filter: none;
}

/* Footer — dark navy background, make logo white */
.footer-brand img {
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

/* Hero brand cards — dark background, make logos white */
.hero-brand-icon img {
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

/* Brand card headers — solid dark background, make logos white */
.brand-card-logo img {
  filter: brightness(0) invert(1);
  opacity: 0.95;
}

/* ===== FOOTER SYSTEM ===== */
.footer {
  background: #0f172a;
  color: #ffffff;
}

/* layout */
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 14px;
}

/* text */
.footer-bottom p {
  margin: 0;
  opacity: 0.8;
}

/* built-by section */
.footer-credit {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  opacity: 0.9;
}

/* link styling */
.footer-credit-link {
  display: flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  color: #c8941a;
  font-weight: 600;
  letter-spacing: 0.2px;
}

/* logo */
.footer-credit-link img {
  height: 18px;
  width: auto;
  object-fit: contain;
  display: block;
}

/* hover effect */
.footer-credit-link:hover {
  opacity: 1;
}

/* mobile */
@media (max-width: 768px) {
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}