/* ===========================================================================
 * BlitzTech Electronics — design system
 * ---------------------------------------------------------------------------
 * Custom layer on top of Bootstrap 5.3. We override Bootstrap's CSS
 * custom properties (no !important hacks), restyle the components we use
 * heaviest (nav, cards, buttons, hero), and add a small set of utilities.
 *
 * Palette derived from the BlitzTech logo (Earth-in-prism, cyan-leaning blues).
 * Typography: Inter from Google Fonts.
 * Spacing: 8px grid (4, 8, 12, 16, 24, 32, 48, 64, 96).
 * Radius: 8 / 12 / 16 / full.
 * =========================================================================== */

/* ===========================================================================
 * 1. DESIGN TOKENS
 * =========================================================================== */
:root {
    /* ------- Brand palette (from logo) ------- */
    --bz-blue-50:  #EEF7FC;
    --bz-blue-100: #D5EAF6;
    --bz-blue-200: #ACD6ED;
    --bz-blue-300: #82C1E4;
    --bz-blue-400: #59ADDB;
    --bz-blue-500: #3DA1D8;   /* logo primary  */
    --bz-blue-600: #2B85B6;
    --bz-blue-700: #1F6890;
    --bz-blue-800: #154B68;
    --bz-blue-900: #0B2D40;
    --bz-blue-950: #061A26;   /* deepest navy */

    /* ------- Warm accent (CTAs, highlights) ------- */
    --bz-amber-50:  #FFF8EB;
    --bz-amber-300: #FBC55B;
    --bz-amber-500: #F59E0B;
    --bz-amber-600: #D97706;

    /* ------- Semantic ------- */
    --bz-success: #10B981;
    --bz-warning: #F59E0B;
    --bz-danger:  #EF4444;
    --bz-info:    #3B82F6;

    /* ------- Neutrals (slate scale) ------- */
    --bz-bg:           #F8FAFC;   /* page background */
    --bz-surface:      #FFFFFF;   /* card / panel surface */
    --bz-surface-2:    #F1F5F9;   /* inset / muted surface */
    --bz-border:       #E2E8F0;
    --bz-border-strong:#CBD5E1;
    --bz-text:         #0F172A;   /* primary body text */
    --bz-text-muted:   #475569;
    --bz-text-soft:    #94A3B8;
    --bz-text-on-dark: #F8FAFC;

    /* ------- Semantic role assignments ------- */
    --bz-primary:        var(--bz-blue-500);
    --bz-primary-hover:  var(--bz-blue-600);
    --bz-primary-active: var(--bz-blue-700);
    --bz-primary-soft:   var(--bz-blue-50);
    --bz-secondary:      var(--bz-blue-900);
    --bz-accent:         var(--bz-amber-500);
    --bz-accent-hover:   var(--bz-amber-600);

    /* ------- Spacing (8px grid) ------- */
    --bz-space-1:  4px;
    --bz-space-2:  8px;
    --bz-space-3:  12px;
    --bz-space-4:  16px;
    --bz-space-5:  24px;
    --bz-space-6:  32px;
    --bz-space-7:  48px;
    --bz-space-8:  64px;
    --bz-space-9:  96px;
    --bz-space-10: 128px;

    /* ------- Border radius ------- */
    --bz-radius-xs:   4px;
    --bz-radius-sm:   8px;
    --bz-radius-md:   12px;
    --bz-radius-lg:   16px;
    --bz-radius-xl:   20px;
    --bz-radius-2xl:  24px;
    --bz-radius-full: 9999px;

    /* ------- Shadows (Material elevation) ------- */
    --bz-shadow-sm:  0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 1px rgba(15, 23, 42, 0.04);
    --bz-shadow-md:  0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
    --bz-shadow-lg:  0 10px 15px -3px rgba(15, 23, 42, 0.10), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
    --bz-shadow-xl:  0 20px 25px -5px rgba(15, 23, 42, 0.10), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
    --bz-shadow-hover: 0 14px 28px -6px rgba(61, 161, 216, 0.20), 0 8px 16px -8px rgba(15, 23, 42, 0.10);
    --bz-shadow-brand: 0 8px 24px -6px rgba(61, 161, 216, 0.45);
    --bz-shadow-glass: 0 8px 32px 0 rgba(15, 23, 42, 0.08), 0 1.5px 0 0 rgba(255,255,255,0.6) inset;

    /* ------- Typography ------- */
    --bz-font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --bz-font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Consolas, 'Liberation Mono', monospace;

    /* ------- Timing ------- */
    --bz-ease:        cubic-bezier(0.4, 0, 0.2, 1);
    --bz-ease-out:    cubic-bezier(0, 0, 0.2, 1);
    --bz-ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

    /* ------- Layout ------- */
    --bz-container: 1280px;
    --bz-nav-height: 72px;

    /* =======================================================================
     * Bootstrap 5.3 variable overrides
     * Doing it here makes Bootstrap components pick up our brand instantly.
     * =======================================================================*/
    --bs-primary:           var(--bz-primary);
    --bs-primary-rgb:       61, 161, 216;
    --bs-secondary:         var(--bz-secondary);
    --bs-secondary-rgb:     11, 45, 64;
    --bs-success:           var(--bz-success);
    --bs-danger:            var(--bz-danger);
    --bs-warning:           var(--bz-warning);
    --bs-info:              var(--bz-info);
    --bs-body-bg:           var(--bz-bg);
    --bs-body-color:        var(--bz-text);
    --bs-body-color-rgb:    15, 23, 42;
    --bs-border-color:      var(--bz-border);
    --bs-link-color:        var(--bz-primary);
    --bs-link-color-rgb:    61, 161, 216;
    --bs-link-hover-color:  var(--bz-primary-hover);
    --bs-font-sans-serif:   var(--bz-font-sans);
    --bs-font-monospace:    var(--bz-font-mono);
    --bs-border-radius:     var(--bz-radius-sm);
    --bs-border-radius-sm:  var(--bz-radius-xs);
    --bs-border-radius-lg:  var(--bz-radius-md);
    --bs-border-radius-xl:  var(--bz-radius-lg);
}

/* ===========================================================================
 * 2. BASE / RESET
 * =========================================================================== */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--bz-font-sans);
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
    font-size: 16px;
    line-height: 1.6;
    color: var(--bz-text);
    background: var(--bz-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6, .h1, .h2, .h3, .h4, .h5, .h6 {
    font-family: var(--bz-font-sans);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--bz-text);
    line-height: 1.2;
    margin-bottom: 0.5em;
}

h1, .h1 { font-size: clamp(2.25rem, 4vw + 0.5rem, 3.75rem); font-weight: 800; letter-spacing: -0.03em; }
h2, .h2 { font-size: clamp(1.625rem, 2.5vw + 0.5rem, 2.5rem); }
h3, .h3 { font-size: clamp(1.375rem, 1.5vw + 0.5rem, 1.875rem); }
h4, .h4 { font-size: clamp(1.125rem, 1vw + 0.5rem, 1.5rem); }

.lead { font-size: 1.125rem; line-height: 1.65; color: var(--bz-text-muted); font-weight: 400; }

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

a {
    color: var(--bz-primary);
    text-decoration: none;
    transition: color 0.18s var(--bz-ease);
}
a:hover { color: var(--bz-primary-hover); }

::selection { background: var(--bz-blue-200); color: var(--bz-blue-900); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bz-surface-2); }
::-webkit-scrollbar-thumb { background: var(--bz-border-strong); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--bz-text-soft); }

/* ===========================================================================
 * 3. BUTTONS  (Material-inspired filled / outlined / text variants)
 * =========================================================================== */
.btn {
    --bz-btn-py: 0.625rem;
    --bz-btn-px: 1.25rem;
    --bz-btn-fs: 0.95rem;

    font-weight: 600;
    font-family: var(--bz-font-sans);
    font-size: var(--bz-btn-fs);
    line-height: 1.4;
    padding: var(--bz-btn-py) var(--bz-btn-px);
    border-radius: var(--bz-radius-sm);
    border: 1.5px solid transparent;
    transition: all 0.22s var(--bz-ease);
    letter-spacing: 0.01em;
    position: relative;
    overflow: hidden;
    isolation: isolate;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.btn:focus-visible {
    outline: 2px solid var(--bz-primary);
    outline-offset: 2px;
    box-shadow: none;
}

.btn-lg { --bz-btn-py: 0.875rem; --bz-btn-px: 2rem; --bz-btn-fs: 1.05rem; border-radius: var(--bz-radius-md); }
.btn-sm { --bz-btn-py: 0.375rem; --bz-btn-px: 0.875rem; --bz-btn-fs: 0.85rem; border-radius: var(--bz-radius-sm); }

.btn-primary,
.btn.btn-primary {
    background: var(--bz-primary);
    border-color: var(--bz-primary);
    color: #fff;
    box-shadow: var(--bz-shadow-sm);
}
.btn-primary:hover,
.btn.btn-primary:hover {
    background: var(--bz-primary-hover);
    border-color: var(--bz-primary-hover);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: var(--bz-shadow-hover);
}
.btn-primary:active { transform: translateY(0); box-shadow: var(--bz-shadow-sm); }

.btn-outline-primary,
.btn.btn-outline-primary {
    background: rgba(61, 161, 216, 0.06);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    border-color: rgba(61, 161, 216, 0.25);
    color: var(--bz-primary);
}
.btn-outline-primary:hover,
.btn.btn-outline-primary:hover {
    background: var(--bz-primary);
    border-color: var(--bz-primary);
    color: #fff;
    transform: translateY(-1px);
    backdrop-filter: none;
}

.btn-secondary,
.btn.btn-secondary {
    background: var(--bz-secondary);
    border-color: var(--bz-secondary);
    color: #fff;
}
.btn-secondary:hover { background: var(--bz-blue-800); border-color: var(--bz-blue-800); color: #fff; transform: translateY(-1px); box-shadow: var(--bz-shadow-lg); }

.btn-accent {
    background: var(--bz-accent);
    border-color: var(--bz-accent);
    color: #1A1A1A;
    font-weight: 700;
    box-shadow: 0 4px 12px -2px rgba(245, 158, 11, 0.35);
}
.btn-accent:hover {
    background: var(--bz-accent-hover);
    border-color: var(--bz-accent-hover);
    color: #1A1A1A;
    transform: translateY(-1px);
    box-shadow: 0 8px 18px -4px rgba(245, 158, 11, 0.45);
}

.btn-light, .btn.btn-light {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--bz-text);
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}
.btn-light:hover { background: rgba(255, 255, 255, 0.9); color: var(--bz-text); border-color: var(--bz-border-strong); }

.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--bz-primary);
}
.btn-ghost:hover { background: var(--bz-primary-soft); color: var(--bz-primary-hover); }

/* Ripple effect target — JS adds .bz-ripple inside on click */
.bz-ripple {
    position: absolute;
    border-radius: 50%;
    transform: scale(0);
    animation: bz-ripple 600ms linear;
    background: rgba(255, 255, 255, 0.5);
    pointer-events: none;
}
.btn-outline-primary .bz-ripple,
.btn-ghost .bz-ripple,
.btn-light .bz-ripple { background: rgba(61, 161, 216, 0.25); }

@keyframes bz-ripple { to { transform: scale(4); opacity: 0; } }

/* ===========================================================================
 * 4. CARDS (Material elevation)
 * =========================================================================== */
.card {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--bz-radius-2xl);
    box-shadow: var(--bz-shadow-glass);
    transition: transform 0.25s var(--bz-ease), box-shadow 0.25s var(--bz-ease), border-color 0.25s var(--bz-ease);
    overflow: hidden;
}
.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--bz-shadow-lg);
    border-color: rgba(61, 161, 216, 0.2);
}
.card-img-top { aspect-ratio: 4/3; object-fit: cover; background: var(--bz-surface-2); }
.card-body { padding: var(--bz-space-5); }
.card-title { font-weight: 700; margin-bottom: var(--bz-space-2); color: var(--bz-text); }
.card-text { color: var(--bz-text-muted); }

/* Non-hover card variant for places where lift would be distracting */
.card.card-flat:hover { transform: none; box-shadow: var(--bz-shadow-sm); border-color: var(--bz-border); }

/* Card with image overlay (used by Phase 7 grid pages) */
.bz-card-feature {
    position: relative;
    aspect-ratio: 4/5;
    background: var(--bz-blue-900);
    color: #fff;
    border-radius: var(--bz-radius-md);
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    padding: var(--bz-space-5);
    transition: transform 0.3s var(--bz-ease);
}
.bz-card-feature::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(11, 45, 64, 0.85) 0%, rgba(11, 45, 64, 0.25) 60%, transparent 100%);
    z-index: 1;
    pointer-events: none;
}
.bz-card-feature > * { position: relative; z-index: 2; }
.bz-card-feature img.bz-card-bg {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    z-index: 0;
    transition: transform 0.6s var(--bz-ease);
}
.bz-card-feature:hover { transform: translateY(-4px); }
.bz-card-feature:hover img.bz-card-bg { transform: scale(1.08); }

/* ===========================================================================
 * 5. NAVIGATION (sticky, blur-on-scroll, modern hover)
 * =========================================================================== */
.bz-navbar {
    position: sticky;
    top: 0;
    z-index: 1030;
    height: var(--bz-nav-height);
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.04);
    transition: background 0.3s var(--bz-ease), border-color 0.3s var(--bz-ease), box-shadow 0.3s var(--bz-ease);
}
.bz-navbar.is-scrolled {
    background: rgba(255, 255, 255, 0.82);
    border-bottom-color: rgba(226, 232, 240, 0.6);
    box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
}

.bz-navbar .navbar-brand img { height: 40px; width: auto; }
.bz-navbar .nav-link {
    color: var(--bz-text);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 1rem !important;
    border-radius: var(--bz-radius-sm);
    transition: color 0.18s var(--bz-ease), background 0.18s var(--bz-ease);
    position: relative;
}
.bz-navbar .nav-link:hover {
    color: var(--bz-primary);
    background: var(--bz-primary-soft);
}
.bz-navbar .nav-link.active {
    color: var(--bz-primary);
    background: var(--bz-primary-soft);
}
.bz-navbar .dropdown-menu {
    border: 1px solid var(--bz-border);
    border-radius: var(--bz-radius-md);
    box-shadow: var(--bz-shadow-xl);
    padding: var(--bz-space-2);
    margin-top: 0.5rem !important;
}
.bz-navbar .dropdown-item {
    padding: 0.6rem 0.875rem;
    border-radius: var(--bz-radius-xs);
    font-size: 0.92rem;
    color: var(--bz-text-muted);
    transition: background 0.15s var(--bz-ease), color 0.15s var(--bz-ease);
}
.bz-navbar .dropdown-item:hover, .bz-navbar .dropdown-item:focus {
    background: var(--bz-primary-soft);
    color: var(--bz-primary);
}
.bz-navbar .dropdown-item i { color: var(--bz-primary); margin-right: 0.5rem; }

.bz-navbar .nav-icon-link {
    width: 40px; height: 40px;
    display: inline-flex;
    align-items: center; justify-content: center;
    border-radius: var(--bz-radius-full);
    color: var(--bz-text);
    transition: all 0.18s var(--bz-ease);
}
.bz-navbar .nav-icon-link:hover { background: var(--bz-primary-soft); color: var(--bz-primary); }

@media (max-width: 991.98px) {
    .bz-navbar { height: auto; padding: 0.75rem 0; }
}

/* ===========================================================================
 * 6. HERO SECTIONS
 * =========================================================================== */
.bz-hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, #F6FBFF 0%, var(--bz-blue-50) 50%, #E8F4FD 100%);
    padding: clamp(5rem, 10vw, 9rem) 0 clamp(4rem, 8vw, 7rem);
}
.bz-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(ellipse at 80% 20%, rgba(61, 161, 216, 0.12), transparent 50%),
        radial-gradient(ellipse at 20% 80%, rgba(61, 161, 216, 0.06), transparent 50%);
    pointer-events: none;
    z-index: 0;
}
.bz-hero > .container { position: relative; z-index: 1; }

.bz-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.3rem 0.75rem;
    background: var(--bz-primary-soft);
    color: var(--bz-primary);
    border: none;
    border-radius: var(--bz-radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: var(--bz-space-4);
}
.bz-eyebrow i { font-size: 0.85rem; }

.bz-hero h1 {
    font-size: clamp(2.5rem, 5vw + 1rem, 5rem);
    line-height: 1.05;
    letter-spacing: -0.04em;
    color: var(--bz-text);
    -webkit-text-fill-color: var(--bz-text);
}
.bz-hero .lead { font-size: 1.2rem; color: var(--bz-text-muted); max-width: 54ch; margin-bottom: var(--bz-space-7); line-height: 1.7; }

.bz-hero-art {
    position: relative;
    aspect-ratio: 5/4;
    border-radius: var(--bz-radius-2xl);
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: var(--bz-shadow-xl);
    overflow: hidden;
}
.bz-hero-art img { width: 100%; height: 100%; object-fit: cover; }
.bz-hero-art::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 60%, rgba(11, 45, 64, 0.25));
    pointer-events: none;
}

/* Compact hero for inner pages */
.bz-hero-compact { padding: clamp(2.5rem, 4vw, 3.5rem) 0 clamp(1.5rem, 2.5vw, 2.5rem); }

/* ===========================================================================
 * 7. SECTION SCAFFOLDING
 * =========================================================================== */
.bz-section { padding: clamp(4rem, 8vw, 7rem) 0; }
.bz-section-tight { padding: clamp(2.5rem, 5vw, 4.5rem) 0; }

/* Tinted section — clearly distinct from white sections */
.bz-section-tint {
    background: linear-gradient(180deg, #E8F0FA 0%, #EDF3F8 100%);
    border-top: 1px solid rgba(61, 161, 216, 0.1);
    border-bottom: 1px solid rgba(61, 161, 216, 0.1);
    position: relative;
}
.bz-section-tint::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 5%, rgba(61, 161, 216, 0.15) 50%, transparent 95%);
}
.bz-section-tint::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 5%, rgba(61, 161, 216, 0.15) 50%, transparent 95%);
}

/* Dark section — strong contrast band */
.bz-section-dark {
    background: linear-gradient(135deg, var(--bz-blue-900) 0%, var(--bz-blue-950) 100%);
    color: var(--bz-text-on-dark);
    border-top: none;
    border-bottom: none;
    position: relative;
}
.bz-section-dark::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(61, 161, 216, 0.35), transparent);
}
.bz-section-dark::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(61, 161, 216, 0.35), transparent);
}
.bz-section-dark h1, .bz-section-dark h2, .bz-section-dark h3, .bz-section-dark h4 { color: #fff; }
.bz-section-dark .lead, .bz-section-dark .text-muted { color: rgba(248, 250, 252, 0.75) !important; }
.bz-section-dark .bz-eyebrow { background: rgba(255,255,255,0.1); color: rgba(248, 250, 252, 0.9); border: none; }
.bz-section-dark .btn-outline-primary { color: #fff; border-color: rgba(255,255,255,0.3); backdrop-filter: blur(6px); background: rgba(255,255,255,0.06); }
.bz-section-dark .btn-outline-primary:hover { background: rgba(255,255,255,0.15); border-color: rgba(255,255,255,0.5); }

.bz-section-head { text-align: center; max-width: 680px; margin: 0 auto var(--bz-space-8); }
.bz-section-head .bz-eyebrow { margin-bottom: var(--bz-space-3); }
.bz-section-head h2 { margin-bottom: var(--bz-space-3); }
.bz-section-head .lead { font-size: 1.1rem; line-height: 1.7; }

/* ===========================================================================
 * 8. STATS / COUNTERS
 * =========================================================================== */
.bz-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--bz-space-6);
}
.bz-stat {
    text-align: center;
    padding: var(--bz-space-5) var(--bz-space-4);
}
.bz-stat-value {
    font-size: clamp(2.25rem, 3.5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1;
    color: var(--bz-primary);
    margin-bottom: var(--bz-space-2);
}
.bz-stat-label {
    font-size: 0.9rem;
    color: var(--bz-text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.bz-section-dark .bz-stat-value { color: #fff; }
.bz-section-dark .bz-stat-label { color: rgba(248, 250, 252, 0.65); }

/* ===========================================================================
 * 9. SERVICE / FEATURE CARDS
 * =========================================================================== */
.bz-service-card {
    height: 100%;
    padding: var(--bz-space-6) var(--bz-space-5);
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--bz-radius-2xl);
    box-shadow: var(--bz-shadow-glass);
    transition: all 0.3s var(--bz-ease);
    position: relative;
    overflow: hidden;
}
.bz-service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--bz-blue-50), transparent 50%);
    opacity: 0;
    transition: opacity 0.3s var(--bz-ease);
    pointer-events: none;
}
.bz-service-card:hover { transform: translateY(-2px); box-shadow: var(--bz-shadow-lg); border-color: rgba(61, 161, 216, 0.15); }
.bz-service-card:hover::before { opacity: 1; }

.bz-service-icon {
    width: 56px; height: 56px;
    display: inline-flex;
    align-items: center; justify-content: center;
    border-radius: var(--bz-radius-md);
    background: var(--bz-primary-soft);
    color: var(--bz-primary);
    font-size: 1.5rem;
    margin-bottom: var(--bz-space-4);
    transition: all 0.3s var(--bz-ease);
}
.bz-service-card:hover .bz-service-icon {
    background: var(--bz-primary);
    color: #fff;
}

.bz-service-card h3 { font-size: 1.25rem; margin-bottom: var(--bz-space-3); }
.bz-service-card p { color: var(--bz-text-muted); font-size: 0.95rem; margin-bottom: var(--bz-space-4); }

/* ===========================================================================
 * 10. PARTNER LOGO STRIP (marquee)
 * =========================================================================== */
.bz-marquee {
    overflow: hidden;
    position: relative;
    padding: var(--bz-space-5) 0;
}
.bz-marquee::before, .bz-marquee::after {
    content: '';
    position: absolute;
    top: 0; bottom: 0;
    width: 80px;
    z-index: 2;
    pointer-events: none;
}
.bz-marquee::before { left: 0; background: linear-gradient(to right, #E8F0FA, transparent); }
.bz-marquee::after  { right: 0; background: linear-gradient(to left,  #E8F0FA, transparent); }
.bz-marquee-track {
    display: flex;
    gap: var(--bz-space-7);
    animation: bz-marquee-scroll 36s linear infinite;
    width: max-content;
}
.bz-marquee:hover .bz-marquee-track { animation-play-state: paused; }
.bz-marquee-item {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    height: 56px;
    padding: 0 var(--bz-space-4);
    color: var(--bz-text-muted);
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
    filter: grayscale(40%);
    transition: filter 0.25s, color 0.25s;
}
.bz-marquee-item img { max-height: 36px; max-width: 140px; object-fit: contain; }
.bz-marquee-item:hover { filter: grayscale(0%); color: var(--bz-text); }

@keyframes bz-marquee-scroll {
    from { transform: translateX(0); }
    to   { transform: translateX(-50%); }
}

/* ===========================================================================
 * 11. FOOTER
 * =========================================================================== */
.bz-footer {
    background: linear-gradient(180deg, var(--bz-blue-900) 0%, var(--bz-blue-950) 100%);
    color: rgba(248, 250, 252, 0.78);
    padding: var(--bz-space-8) 0 var(--bz-space-5);
    margin-top: 0;
    position: relative;
    overflow: hidden;
}
.bz-footer::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; height: 1px;
    background: var(--bz-border);
}
.bz-footer h5 { color: #fff; font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 700; margin-bottom: var(--bz-space-4); }
.bz-footer a { color: rgba(248, 250, 252, 0.7); transition: color 0.18s var(--bz-ease); display: inline-block; padding: 0.2rem 0; }
.bz-footer a:hover { color: var(--bz-blue-300); }
.bz-footer ul { list-style: none; padding: 0; margin: 0; }
.bz-footer ul li { margin-bottom: var(--bz-space-1); }
.bz-footer-bottom {
    margin-top: var(--bz-space-6);
    padding-top: var(--bz-space-5);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--bz-space-3);
    font-size: 0.85rem;
    color: rgba(248, 250, 252, 0.5);
}
.bz-social-row { display: inline-flex; gap: var(--bz-space-2); }
.bz-social-row a {
    width: 38px; height: 38px;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: var(--bz-radius-full);
    background: rgba(255, 255, 255, 0.06);
    color: rgba(248, 250, 252, 0.8);
    transition: all 0.2s var(--bz-ease);
}
.bz-social-row a:hover { background: var(--bz-blue-500); color: #fff; transform: translateY(-2px); }

/* ===========================================================================
 * 12. BADGES / PILLS
 * =========================================================================== */
.badge { padding: 0.4em 0.75em; border-radius: var(--bz-radius-full); font-weight: 600; font-size: 0.75rem; letter-spacing: 0.02em; }
.bg-primary { background-color: var(--bz-primary) !important; }
.bg-secondary { background-color: var(--bz-secondary) !important; }
.bg-success { background-color: var(--bz-success) !important; }
.bg-warning { background-color: var(--bz-warning) !important; color: #1A1A1A; }
.bg-danger { background-color: var(--bz-danger) !important; }
.bg-info { background-color: var(--bz-info) !important; }
.bg-light { background-color: var(--bz-surface-2) !important; color: var(--bz-text); }

.bz-pill-soft {
    background: var(--bz-primary-soft);
    color: var(--bz-primary);
    border: 1px solid var(--bz-blue-100);
    padding: 0.3rem 0.75rem;
    border-radius: var(--bz-radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-flex; align-items: center; gap: 0.4rem;
}

/* ===========================================================================
 * 13. FORMS
 * =========================================================================== */
.form-control, .form-select {
    padding: 0.625rem 0.875rem;
    border-radius: var(--bz-radius-sm);
    border: 1.5px solid var(--bz-border);
    background: var(--bz-surface);
    color: var(--bz-text);
    font-size: 0.95rem;
    transition: border-color 0.18s, box-shadow 0.18s;
}
.form-control:focus, .form-select:focus {
    border-color: var(--bz-primary);
    box-shadow: 0 0 0 4px rgba(61, 161, 216, 0.12);
    outline: 0;
}
.form-label { font-weight: 500; color: var(--bz-text); margin-bottom: 0.4rem; }

/* ===========================================================================
 * 14. PRODUCT CARDS (shop)
 * =========================================================================== */
.bz-product-card {
    background: var(--bz-surface);
    border: 1px solid var(--bz-border);
    border-radius: var(--bz-radius-md);
    overflow: hidden;
    transition: all 0.25s var(--bz-ease);
    display: flex;
    flex-direction: column;
    height: 100%;
}
.bz-product-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--bz-shadow-lg);
    border-color: var(--bz-blue-100);
}
.bz-product-card-img {
    aspect-ratio: 1/1;
    background: var(--bz-surface-2);
    overflow: hidden;
    position: relative;
}
.bz-product-card-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.45s var(--bz-ease);
}
.bz-product-card:hover .bz-product-card-img img { transform: scale(1.05); }
.bz-product-card-body { padding: var(--bz-space-4); display: flex; flex-direction: column; flex-grow: 1; }
.bz-product-card-title { font-size: 0.95rem; font-weight: 600; margin-bottom: var(--bz-space-2); line-height: 1.4; color: var(--bz-text); }
.bz-product-card-price { font-size: 1.125rem; font-weight: 700; color: var(--bz-primary); margin-top: auto; }
.bz-product-card-meta { font-size: 0.8rem; color: var(--bz-text-muted); }

/* ===========================================================================
 * 14b. CASE STUDY CARDS
 * =========================================================================== */
.bz-cs-card {
    height: 100%;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--bz-radius-2xl);
    box-shadow: var(--bz-shadow-glass);
    overflow: hidden;
    transition: all 0.25s var(--bz-ease);
    display: flex;
    flex-direction: column;
}
.bz-cs-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--bz-shadow-lg);
    border-color: rgba(61, 161, 216, 0.2);
}

/* ── Opaque white card when inside a dark section ──
   Prevents the dark navy bleeding through the glass backdrop,
   which was turning the card body grey and killing text contrast. ── */
.bz-section-dark .bz-cs-card {
    background: #ffffff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-color: rgba(255, 255, 255, 0.9);
}
.bz-section-dark .bz-cs-card .bz-cs-card-body small,
.bz-section-dark .bz-cs-card .bz-cs-card-body .text-muted {
    color: var(--bz-text-muted) !important;
}
.bz-section-dark .bz-cs-card h3 {
    color: var(--bz-text) !important;
}
.bz-cs-card-img {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, var(--bz-blue-100), var(--bz-blue-300));
    position: relative;
    overflow: hidden;
}
.bz-cs-card-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: transform 0.5s var(--bz-ease);
}
.bz-cs-card:hover .bz-cs-card-img img { transform: scale(1.05); }
.bz-cs-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(11,45,64,0.0) 30%, rgba(11,45,64,0.4));
    display: flex;
    align-items: flex-end;
    padding: 1rem;
}
.bz-cs-card-body {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}
.bz-cs-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-top: auto;
}

/* ── High-contrast tag pills on case-study cards ── */
.bz-cs-tags .bz-pill-soft {
    background: var(--bz-blue-700);
    color: #fff;
    border-color: var(--bz-blue-600);
    font-size: 0.7rem;
    padding: 0.25rem 0.6rem;
}
.bz-cs-tags .bz-pill-soft:hover {
    background: var(--bz-blue-600);
}

/* ── Client-name badge overlaid on card image ── */
.bz-cs-card-overlay .bz-pill-soft {
    background: rgba(11, 45, 64, 0.85) !important;
    color: #fff !important;
    border-color: rgba(255, 255, 255, 0.2) !important;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    font-size: 0.75rem;
}

/* ===========================================================================
 * 15. LEARN GUIDE LAYOUT (Adafruit-inspired)
 * =========================================================================== */
.bz-guide-card {
    background: var(--bz-surface);
    border: 1px solid var(--bz-border);
    border-radius: var(--bz-radius-md);
    overflow: hidden;
    transition: all 0.25s var(--bz-ease);
}
.bz-guide-card:hover { transform: translateY(-2px); box-shadow: var(--bz-shadow-lg); border-color: var(--bz-blue-100); }
.bz-guide-card-img {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, var(--bz-blue-100), var(--bz-blue-300));
    position: relative;
}
.bz-guide-card-img img { width: 100%; height: 100%; object-fit: cover; }
.bz-guide-meta { display: flex; gap: var(--bz-space-3); font-size: 0.8rem; color: var(--bz-text-muted); margin-bottom: var(--bz-space-2); }
.bz-guide-meta .bz-pill-soft { font-size: 0.7rem; padding: 0.2rem 0.5rem; }

.bz-guide-body article { font-size: 1.05rem; line-height: 1.75; color: var(--bz-text); }
.bz-guide-body article h2 { margin-top: var(--bz-space-7); margin-bottom: var(--bz-space-3); }
.bz-guide-body article h3 { margin-top: var(--bz-space-6); }
.bz-guide-body article pre {
    background: var(--bz-blue-950);
    color: #e2e8f0;
    padding: var(--bz-space-4);
    border-radius: var(--bz-radius-md);
    font-family: var(--bz-font-mono);
    font-size: 0.85rem;
    overflow-x: auto;
    border: 1px solid var(--bz-blue-900);
}
.bz-guide-body article code:not(pre code) {
    background: var(--bz-surface-2);
    padding: 0.125em 0.4em;
    border-radius: var(--bz-radius-xs);
    font-family: var(--bz-font-mono);
    font-size: 0.875em;
    color: var(--bz-blue-700);
}
.bz-guide-body article blockquote {
    border-left: 3px solid var(--bz-primary);
    padding: var(--bz-space-2) var(--bz-space-5);
    margin: var(--bz-space-5) 0;
    background: var(--bz-primary-soft);
    border-radius: var(--bz-radius-sm);
    font-style: normal;
    color: var(--bz-text);
}

/* ===========================================================================
 * 16. ANIMATIONS (energetic but tasteful)
 * =========================================================================== */
.bz-reveal { opacity: 0; transform: translateY(12px); transition: opacity 0.6s var(--bz-ease-out), transform 0.6s var(--bz-ease-out); }
.bz-reveal.is-visible { opacity: 1; transform: translateY(0); }

.bz-reveal-left  { opacity: 0; transform: translateX(-16px); transition: opacity 0.6s var(--bz-ease-out), transform 0.6s var(--bz-ease-out); }
.bz-reveal-left.is-visible { opacity: 1; transform: translateX(0); }
.bz-reveal-right { opacity: 0; transform: translateX(16px);  transition: opacity 0.6s var(--bz-ease-out), transform 0.6s var(--bz-ease-out); }
.bz-reveal-right.is-visible { opacity: 1; transform: translateX(0); }

.bz-stagger > * { opacity: 0; transform: translateY(10px); transition: opacity 0.5s var(--bz-ease-out), transform 0.5s var(--bz-ease-out); }
.bz-stagger.is-visible > * { opacity: 1; transform: translateY(0); }
.bz-stagger.is-visible > *:nth-child(1) { transition-delay: 0ms; }
.bz-stagger.is-visible > *:nth-child(2) { transition-delay: 60ms; }
.bz-stagger.is-visible > *:nth-child(3) { transition-delay: 120ms; }
.bz-stagger.is-visible > *:nth-child(4) { transition-delay: 180ms; }
.bz-stagger.is-visible > *:nth-child(5) { transition-delay: 240ms; }
.bz-stagger.is-visible > *:nth-child(6) { transition-delay: 300ms; }

/* bz-float removed — too playful for enterprise feel */

@keyframes bz-pulse-soft { 0%, 100% { opacity: 1; } 50% { opacity: 0.6; } }
.bz-pulse-soft { animation: bz-pulse-soft 2.5s ease-in-out infinite; }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
    .bz-marquee-track { animation: none; }
    .bz-reveal, .bz-reveal-left, .bz-reveal-right, .bz-stagger > * { opacity: 1 !important; transform: none !important; }
}

/* ===========================================================================
 * 17. CTA BANDS
 * =========================================================================== */
.bz-cta {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bz-blue-700) 0%, var(--bz-blue-900) 100%);
    color: #fff;
    border-radius: var(--bz-radius-2xl);
    padding: clamp(3rem, 6vw, 5rem);
    box-shadow: var(--bz-shadow-xl);
}
.bz-cta::before {
    content: '';
    position: absolute;
    top: -50%; right: -10%;
    width: 480px; height: 480px;
    background: radial-gradient(circle, rgba(61, 161, 216, 0.45) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.bz-cta::after {
    content: '';
    position: absolute;
    bottom: -40%; left: -10%;
    width: 380px; height: 380px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.18) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.bz-cta > * { position: relative; z-index: 1; }
.bz-cta h2 { color: #fff; }
.bz-cta .lead { color: rgba(255, 255, 255, 0.85); }

/* ===========================================================================
 * 18. ALERTS
 * =========================================================================== */
.alert { border: none; border-radius: var(--bz-radius-md); padding: var(--bz-space-4) var(--bz-space-5); border-left: 4px solid; box-shadow: var(--bz-shadow-sm); }
.alert-primary { background: var(--bz-primary-soft); border-left-color: var(--bz-primary); color: var(--bz-blue-900); }
.alert-success { background: #ECFDF5; border-left-color: var(--bz-success); color: #065F46; }
.alert-warning { background: #FFFBEB; border-left-color: var(--bz-warning); color: #78350F; }
.alert-danger  { background: #FEF2F2; border-left-color: var(--bz-danger);  color: #7F1D1D; }
.alert-info    { background: #EFF6FF; border-left-color: var(--bz-info);    color: #1E3A8A; }

/* ===========================================================================
 * 19. UTILITIES
 * =========================================================================== */
.bz-container-narrow { max-width: 720px; margin-left: auto; margin-right: auto; }
.bz-divider { height: 1px; background: var(--bz-border); margin: var(--bz-space-6) 0; border: 0; }
.bz-divider-soft { height: 1px; background: linear-gradient(90deg, transparent, var(--bz-border), transparent); margin: var(--bz-space-6) 0; border: 0; }

.bz-grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--bz-space-5); }
.bz-grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--bz-space-5); }
.bz-grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--bz-space-4); }

.bz-text-gradient {
    background: linear-gradient(135deg, var(--bz-blue-500) 0%, var(--bz-blue-800) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ===========================================================================
 * 20. GLASSMORPHISM UTILITIES
 * =========================================================================== */
.bz-glass {
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.45);
    box-shadow: var(--bz-shadow-glass);
}
.bz-glass-dark {
    background: rgba(11, 45, 64, 0.65);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
}

/* Section divider glow — a subtle cyan line between sections */
.bz-section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent 5%, rgba(61, 161, 216, 0.25) 50%, transparent 95%);
    border: 0;
    margin: 0;
}