/* ═══════════════════════════════════════════════════════════
   DESIGN TOKENS
═══════════════════════════════════════════════════════════ */
:root {
    --navy:        #050d1f;
    --navy-mid:    #0d1b36;
    --navy-light:  #162040;
    --teal:        #00c4b4;
    --teal-dark:   #009e91;
    --gold:        #f5a623;
    --white:       #ffffff;
    --off-white:   #f4f7fb;
    --text:        #1e293b;
    --text-muted:  #64748b;
    --border:      rgba(255,255,255,0.08);
    --card-shadow: 0 8px 32px rgba(0,0,0,0.10);
    --card-hover:  0 20px 48px rgba(0,0,0,0.16);
    --radius:      16px;
    --radius-sm:   10px;
    --section-py:  6rem;
    --font:        'Inter', sans-serif;
}

/* ═══════════════════════════════════════════════════════════
   BASE
═══════════════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--white); }

/* ═══════════════════════════════════════════════════════════
   NAVBAR
═══════════════════════════════════════════════════════════ */
.site-nav {
    padding: 1.25rem 0;
    background: transparent;
    transition: background .35s ease, padding .35s ease, box-shadow .35s ease;
}
.site-nav.scrolled {
    background: rgba(5, 13, 31, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: .75rem 0;
    box-shadow: 0 4px 24px rgba(0,0,0,.35);
}
.nav-logo { height: 52px; transition: height .3s; }
.site-nav.scrolled .nav-logo { height: 42px; }

.site-nav .nav-link {
    color: rgba(255,255,255,.85) !important;
    font-size: .9rem;
    font-weight: 500;
    padding: .4rem .8rem !important;
    letter-spacing: .02em;
    position: relative;
    transition: color .25s;
}
.site-nav .nav-link::after {
    content: '';
    position: absolute;
    left: 50%; bottom: -2px;
    width: 0; height: 2px;
    background: var(--teal);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width .3s ease;
}
.site-nav .nav-link:hover,
.site-nav .nav-link.active { color: var(--teal) !important; }
.site-nav .nav-link:hover::after,
.site-nav .nav-link.active::after { width: 70%; }

.nav-cta {
    background: linear-gradient(135deg, var(--teal), var(--teal-dark)) !important;
    color: var(--white) !important;
    border-radius: 50px !important;
    padding: .45rem 1.4rem !important;
    font-weight: 600 !important;
    transition: box-shadow .25s, transform .25s !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover {
    box-shadow: 0 6px 20px rgba(0,196,180,.4) !important;
    transform: translateY(-1px);
    color: var(--white) !important;
}

/* Mobile nav */
@media (max-width: 991px) {
    .site-nav.show, .site-nav { background: rgba(5,13,31,.97) !important; }
    .navbar-collapse { padding: 1rem 0; }
    .nav-cta { display: inline-block; margin: .5rem 0; }
}

/* ═══════════════════════════════════════════════════════════
   TYPOGRAPHY HELPERS
═══════════════════════════════════════════════════════════ */
.section-eyebrow {
    display: inline-block;
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--teal);
    margin-bottom: .75rem;
}
.section-title {
    font-size: clamp(1.9rem, 4vw, 2.75rem);
    font-weight: 800;
    line-height: 1.2;
    color: var(--navy);
    margin-bottom: 1rem;
}
.section-title.light { color: var(--white); }
.section-lead {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    line-height: 1.8;
}
.section-lead.light { color: rgba(255,255,255,.7); }
.underline-accent {
    position: relative;
    display: inline-block;
}
.underline-accent::after {
    content: '';
    position: absolute;
    left: 0; bottom: -.2em;
    width: 60%; height: 4px;
    background: linear-gradient(90deg, var(--teal), var(--gold));
    border-radius: 4px;
}

/* ═══════════════════════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════════════════════ */
.btn {
    font-weight: 600;
    letter-spacing: .02em;
    border-radius: 50px;
    padding: .7rem 2rem;
    transition: transform .2s, box-shadow .2s;
    border: none;
}
.btn:hover { transform: translateY(-2px); }

.btn-teal {
    background: linear-gradient(135deg, var(--teal), var(--teal-dark));
    color: var(--white);
    box-shadow: 0 6px 20px rgba(0,196,180,.3);
}
.btn-teal:hover {
    box-shadow: 0 10px 28px rgba(0,196,180,.45);
    color: var(--white);
}
.btn-outline-white {
    border: 2px solid rgba(255,255,255,.6) !important;
    color: var(--white);
    background: transparent;
}
.btn-outline-white:hover {
    background: rgba(255,255,255,.12);
    border-color: var(--white) !important;
    color: var(--white);
}
.btn-outline-teal {
    border: 2px solid var(--teal) !important;
    color: var(--teal);
    background: transparent;
}
.btn-outline-teal:hover {
    background: var(--teal);
    color: var(--white);
}

/* ═══════════════════════════════════════════════════════════
   HERO
═══════════════════════════════════════════════════════════ */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--navy);
}
.hero-bg {
    position: absolute; inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 70% 40%, rgba(0,196,180,.12) 0%, transparent 60%),
        radial-gradient(ellipse 60% 80% at 10% 80%, rgba(245,166,35,.07) 0%, transparent 50%),
        linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 60%, var(--navy-light) 100%);
    z-index: 0;
}
.hero-grid {
    position: absolute; inset: 0; z-index: 0;
    background-image:
        linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}
.hero-content { position: relative; z-index: 2; }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    background: rgba(0,196,180,.12);
    border: 1px solid rgba(0,196,180,.3);
    color: var(--teal);
    border-radius: 50px;
    padding: .35rem 1rem;
    font-size: .8rem;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}
.hero-badge span { width: 6px; height: 6px; background: var(--teal); border-radius: 50%; animation: blink 1.6s ease infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.3} }

.hero-title {
    font-size: clamp(2.4rem, 6vw, 4.2rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.12;
    margin-bottom: 1.5rem;
    letter-spacing: -.02em;
}
.hero-title .accent { color: var(--teal); }
.hero-title .gold   { color: var(--gold); }
.hero-subtitle {
    font-size: 1.15rem;
    color: rgba(255,255,255,.65);
    line-height: 1.8;
    margin-bottom: 2.5rem;
    max-width: 540px;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-stats {
    display: flex;
    gap: 2.5rem;
    margin-top: 3.5rem;
    padding-top: 2.5rem;
    border-top: 1px solid rgba(255,255,255,.1);
}
.hero-stat-num {
    font-size: 1.9rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1;
}
.hero-stat-label {
    font-size: .8rem;
    color: rgba(255,255,255,.5);
    margin-top: .25rem;
    letter-spacing: .05em;
}

/* Floating cards in hero */
.hero-visual { position: relative; display: flex; align-items: center; justify-content: center; }
.hero-float-card {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.1);
    backdrop-filter: blur(12px);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    color: var(--white);
    font-size: .9rem;
    position: absolute;
    min-width: 180px;
    box-shadow: 0 8px 32px rgba(0,0,0,.25);
}
.hero-float-card .float-icon {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--teal), var(--teal-dark));
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: .75rem;
    font-size: .95rem;
}
.hero-float-card.top-right  { top: 8%;  right: -5%; animation: float 4s ease-in-out infinite; }
.hero-float-card.mid-left   { top: 45%; left: -8%;  animation: float 5s ease-in-out .8s infinite; }
.hero-float-card.bottom-right { bottom: 8%; right: -2%; animation: float 4.5s ease-in-out 1.2s infinite; }
.hero-center-img {
    width: 360px; max-width: 90%;
    border-radius: 24px;
    box-shadow: 0 30px 80px rgba(0,0,0,.5);
    border: 1px solid rgba(255,255,255,.08);
}
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-12px)} }

/* ═══════════════════════════════════════════════════════════
   TRUST BAR
═══════════════════════════════════════════════════════════ */
.trust-bar {
    background: var(--off-white);
    border-top: 1px solid #e8eef5;
    border-bottom: 1px solid #e8eef5;
    padding: 1.5rem 0;
}
.trust-item {
    display: flex;
    align-items: center;
    gap: .75rem;
    color: var(--text-muted);
    font-size: .9rem;
    font-weight: 500;
}
.trust-item i { color: var(--teal); font-size: 1.1rem; }

/* ═══════════════════════════════════════════════════════════
   GENERIC SECTION
═══════════════════════════════════════════════════════════ */
.site-section       { padding: var(--section-py) 0; }
.site-section-dark  { background: var(--navy); padding: var(--section-py) 0; }
.site-section-alt   { background: var(--off-white); padding: var(--section-py) 0; }

/* ═══════════════════════════════════════════════════════════
   CARDS
═══════════════════════════════════════════════════════════ */
.product-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    border: 1px solid #eef2f8;
    transition: transform .3s, box-shadow .3s;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--card-hover);
}
.product-card-img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}
.product-card-img-placeholder {
    width: 100%;
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--off-white), #dde3ed);
    display: flex; align-items: center; justify-content: center;
    font-size: 3rem;
    color: #b0bec5;
}
.product-card-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.product-card-meta {
    display: flex;
    align-items: center;
    gap: .5rem;
    margin-bottom: .75rem;
}
.badge-teal    { background: rgba(0,196,180,.12); color: var(--teal-dark); font-weight: 600; border-radius: 50px; padding: .25rem .75rem; font-size: .75rem; }
.badge-gold    { background: rgba(245,166,35,.12); color: #b47b00; font-weight: 600; border-radius: 50px; padding: .25rem .75rem; font-size: .75rem; }
.badge-navy    { background: rgba(5,13,31,.08); color: var(--navy-mid); font-weight: 600; border-radius: 50px; padding: .25rem .75rem; font-size: .75rem; }
.product-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: .5rem;
    line-height: 1.4;
}
.product-card-desc {
    font-size: .9rem;
    color: var(--text-muted);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 1.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.product-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid #f0f4fa;
}
.price-tag {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--navy);
}
.price-tag.free { color: var(--teal-dark); }

/* App icon card */
.app-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: var(--card-shadow);
    border: 1px solid #eef2f8;
    border-top: 3px solid var(--teal);
    transition: transform .3s, box-shadow .3s;
    height: 100%;
    display: flex; flex-direction: column; align-items: center;
}
.app-card:hover { transform: translateY(-6px); box-shadow: var(--card-hover); }
.app-icon-wrap {
    width: 72px; height: 72px;
    border-radius: 18px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--navy-light), var(--navy-mid));
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1.25rem;
    box-shadow: 0 6px 20px rgba(0,196,180,.2);
}
.app-icon-wrap img { width: 100%; height: 100%; object-fit: cover; }
.app-card-title { font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: .5rem; }
.app-card-desc  { font-size: .88rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 1.25rem; flex: 1; }

/* ═══════════════════════════════════════════════════════════
   DARK SECTION CARDS (Digital Products)
═══════════════════════════════════════════════════════════ */
.digital-card {
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.08);
    border-radius: var(--radius);
    padding: 2rem;
    transition: background .3s, border-color .3s, transform .3s;
    height: 100%;
    display: flex; flex-direction: column;
}
.digital-card:hover {
    background: rgba(0,196,180,.06);
    border-color: rgba(0,196,180,.25);
    transform: translateY(-4px);
}
.digital-card-icon {
    width: 52px; height: 52px;
    background: linear-gradient(135deg, var(--teal), var(--teal-dark));
    border-radius: 14px;
    display: flex; align-items: center; justify-content: center;
    color: var(--white);
    font-size: 1.3rem;
    margin-bottom: 1.25rem;
}
.digital-card-title { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: .5rem; }
.digital-card-desc  { font-size: .88rem; color: rgba(255,255,255,.55); line-height: 1.7; flex: 1; }

/* ═══════════════════════════════════════════════════════════
   BLOG CARDS
═══════════════════════════════════════════════════════════ */
.blog-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    border: 1px solid #eef2f8;
    transition: transform .3s, box-shadow .3s;
    height: 100%;
}
.blog-card:hover { transform: translateY(-5px); box-shadow: var(--card-hover); }
.blog-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform .4s;
}
.blog-card:hover .blog-card-img { transform: scale(1.04); }
.blog-card-img-wrap { overflow: hidden; }
.blog-card-body { padding: 1.5rem; }
.blog-card-title { font-size: 1rem; font-weight: 700; color: var(--text); margin: .5rem 0; line-height: 1.5; }
.blog-card-text  { font-size: .88rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 1rem; }

/* ═══════════════════════════════════════════════════════════
   CONTACT SECTION
═══════════════════════════════════════════════════════════ */
.contact-section {
    background: var(--off-white);
    padding: var(--section-py) 0;
}
.contact-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 2.5rem;
    box-shadow: var(--card-shadow);
    border: 1px solid #eef2f8;
}
.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.contact-info-icon {
    width: 44px; height: 44px; flex-shrink: 0;
    background: rgba(0,196,180,.1);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    color: var(--teal);
    font-size: 1.1rem;
}
.contact-info-label { font-size: .78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .08em; margin-bottom: .2rem; }
.contact-info-value { font-size: .95rem; font-weight: 500; color: var(--text); }

/* ═══════════════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════════════ */
.site-footer {
    background: var(--navy);
    color: rgba(255,255,255,.7);
    padding: 4rem 0 2rem;
}
.site-footer .footer-brand img { height: 44px; margin-bottom: 1rem; }
.site-footer p { font-size: .9rem; line-height: 1.8; }
.footer-heading { font-size: .78rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--white); margin-bottom: 1rem; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: .5rem; }
.footer-links a { color: rgba(255,255,255,.55); text-decoration: none; font-size: .9rem; transition: color .25s; }
.footer-links a:hover { color: var(--teal); }
.footer-divider { border-color: rgba(255,255,255,.08); margin: 2.5rem 0 1.5rem; }
.footer-copy { font-size: .85rem; color: rgba(255,255,255,.35); }
.social-icons { display: flex; gap: .6rem; margin-top: 1.25rem; }
.social-icon {
    width: 38px; height: 38px;
    border-radius: 50%;
    background: rgba(255,255,255,.07);
    border: 1px solid rgba(255,255,255,.1);
    display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,.6);
    font-size: .9rem;
    text-decoration: none;
    transition: background .25s, color .25s, transform .25s;
}
.social-icon:hover { background: var(--teal); color: var(--white); border-color: var(--teal); transform: translateY(-2px); }

/* ═══════════════════════════════════════════════════════════
   ANIMATIONS
═══════════════════════════════════════════════════════════ */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(28px); }
    to   { opacity: 1; transform: translateY(0); }
}
.anim { opacity: 0; transform: translateY(28px); transition: opacity .6s ease, transform .6s ease; }
.anim.visible { opacity: 1; transform: translateY(0); }
.anim-delay-1 { transition-delay: .1s; }
.anim-delay-2 { transition-delay: .2s; }
.anim-delay-3 { transition-delay: .3s; }
.anim-delay-4 { transition-delay: .4s; }

/* ═══════════════════════════════════════════════════════════
   FORM CONTROLS
═══════════════════════════════════════════════════════════ */
.form-control, .form-select {
    border-radius: var(--radius-sm);
    border: 1.5px solid #dde4ef;
    padding: .7rem 1rem;
    font-size: .95rem;
    transition: border-color .25s, box-shadow .25s;
}
.form-control:focus, .form-select:focus {
    border-color: var(--teal);
    box-shadow: 0 0 0 3px rgba(0,196,180,.12);
}
textarea.form-control { resize: none; }

/* ═══════════════════════════════════════════════════════════
   EMPTY STATE
═══════════════════════════════════════════════════════════ */
.empty-state { text-align: center; padding: 3rem; color: var(--text-muted); }
.empty-state i { font-size: 2.5rem; opacity: .3; margin-bottom: 1rem; display: block; }

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
    :root { --section-py: 4rem; }
    .hero-stats { gap: 1.5rem; }
    .hero-float-card { display: none; }
    .hero-center-img { width: 100%; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; text-align: center; }
}
@media (max-width: 480px) {
    :root { --section-py: 3rem; }
    .hero-title { font-size: 2rem; }
}

/* ═══════════════════════════════════════════════════════════
   HOME — FEATURED SECTIONS
═══════════════════════════════════════════════════════════ */
.featured-section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}
.view-all-btn { font-size: .88rem; white-space: nowrap; }
.product-card-author { font-size: .82rem; color: var(--text-muted); margin-bottom: .5rem; }
.featured-empty { text-align: center; padding: 2rem; color: var(--text-muted); }
.featured-empty a { color: var(--teal); }

/* ═══════════════════════════════════════════════════════════
   CATALOG PAGES — HERO
═══════════════════════════════════════════════════════════ */
.catalog-hero {
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-mid) 100%);
    padding: 7rem 0 3.5rem;
    position: relative;
    overflow: hidden;
}
.catalog-hero::after {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(ellipse 70% 80% at 80% 50%, rgba(0,196,180,.08) 0%, transparent 60%);
    pointer-events: none;
}
.catalog-hero-dark { background: linear-gradient(135deg, #030813 0%, var(--navy) 100%); }
.catalog-hero-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: .5rem;
}
.catalog-hero-sub { color: rgba(255,255,255,.6); font-size: 1.05rem; margin: 0; }
.catalog-breadcrumb { background: none; padding: 0; margin: 0; }
.catalog-breadcrumb .breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,.3); }
.catalog-breadcrumb a { color: rgba(255,255,255,.55); text-decoration: none; font-size: .85rem; }
.catalog-breadcrumb a:hover { color: var(--teal); }
.catalog-breadcrumb .active { color: rgba(255,255,255,.4); font-size: .85rem; }
.catalog-body { padding: 2.5rem 0 5rem; }

/* ═══════════════════════════════════════════════════════════
   CATALOG — TOOLBAR
═══════════════════════════════════════════════════════════ */
.catalog-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: .75rem;
    margin-bottom: 1.5rem;
    padding: 1rem 1.25rem;
    background: var(--white);
    border-radius: var(--radius-sm);
    border: 1px solid #eef2f8;
    box-shadow: 0 2px 8px rgba(0,0,0,.05);
}
.toolbar-count { font-size: .9rem; color: var(--text-muted); }
.toolbar-count strong { color: var(--text); font-weight: 700; }
.search-wrap { position: relative; }
.search-icon { position: absolute; left: .85rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: .85rem; pointer-events: none; }
.search-input { padding-left: 2.4rem !important; min-width: 220px; font-size: .9rem !important; }
.sort-select { min-width: 190px; font-size: .88rem !important; padding: .55rem .9rem !important; }

/* ═══════════════════════════════════════════════════════════
   CATALOG — FILTER SIDEBAR
═══════════════════════════════════════════════════════════ */
.filter-panel {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid #eef2f8;
    padding: 1.5rem;
    position: sticky;
    top: 84px;
    box-shadow: var(--card-shadow);
}
.filter-panel-title { font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 1.25rem; }
.filter-section { border-bottom: 1px solid #f0f4fa; padding-bottom: 1rem; margin-bottom: 1rem; }
.filter-section:last-of-type { border-bottom: none; margin-bottom: 0; }
.filter-section-toggle {
    display: flex; align-items: center; justify-content: space-between;
    width: 100%;
    background: none; border: none; padding: 0;
    font-size: .9rem; font-weight: 600; color: var(--text);
    cursor: pointer; margin-bottom: .75rem;
}
.filter-section-toggle i { font-size: .75rem; color: var(--text-muted); transition: transform .25s; }
.filter-section-body { display: flex; flex-direction: column; gap: .4rem; }
.filter-section-body.collapsed { display: none; }
.filter-check {
    display: flex; align-items: center; gap: .6rem;
    font-size: .88rem; color: var(--text);
    cursor: pointer; padding: .25rem 0;
    user-select: none;
}
.filter-check input { accent-color: var(--teal); width: 15px; height: 15px; cursor: pointer; flex-shrink: 0; }
.filter-check span { line-height: 1.3; }

/* ═══════════════════════════════════════════════════════════
   CATALOG — ACTIVE FILTER CHIPS
═══════════════════════════════════════════════════════════ */
.active-chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.25rem; min-height: 0; }
.filter-chip {
    display: inline-flex; align-items: center; gap: .4rem;
    background: rgba(0,196,180,.1);
    border: 1px solid rgba(0,196,180,.3);
    color: var(--teal-dark);
    border-radius: 50px;
    padding: .25rem .85rem;
    font-size: .8rem; font-weight: 600;
    cursor: pointer;
    transition: background .2s;
}
.filter-chip:hover { background: rgba(0,196,180,.2); }
.filter-chip i { font-size: .7rem; }

/* ═══════════════════════════════════════════════════════════
   CATALOG — DIGITAL PRODUCT CARD (light bg version)
═══════════════════════════════════════════════════════════ */
.digital-product-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 2rem;
    border: 1px solid #eef2f8;
    box-shadow: var(--card-shadow);
    transition: transform .3s, box-shadow .3s;
    height: 100%;
    display: flex; flex-direction: column;
}
.digital-product-card:hover { transform: translateY(-5px); box-shadow: var(--card-hover); }
.digital-product-icon {
    width: 56px; height: 56px;
    background: linear-gradient(135deg, rgba(0,196,180,.15), rgba(0,196,180,.05));
    border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    color: var(--teal);
    font-size: 1.4rem;
    margin-bottom: 1.25rem;
    border: 1px solid rgba(0,196,180,.2);
}
.digital-product-title { font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: .5rem; }
.digital-product-desc  { font-size: .88rem; color: var(--text-muted); line-height: 1.7; flex: 1; }
.digital-product-footer {
    display: flex; align-items: center; justify-content: space-between;
    margin-top: 1.5rem; padding-top: 1rem;
    border-top: 1px solid #f0f4fa;
}

/* ═══════════════════════════════════════════════════════════
   ABOUT AUTHOR SECTION
═══════════════════════════════════════════════════════════ */
.author-avatar-wrap {
    position: relative;
    display: inline-block;
}
.author-avatar {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--navy), var(--navy-mid));
    color: var(--white);
    font-size: 2.8rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    box-shadow: 0 16px 48px rgba(5,13,31,.25);
    letter-spacing: .04em;
}
.author-avatar-ring {
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    border: 2px dashed rgba(0,196,180,.4);
    animation: spin 20s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.author-name  { font-size: 1.5rem; font-weight: 800; color: var(--navy); }
.author-role  { font-size: .9rem; color: var(--teal-dark); font-weight: 600; letter-spacing: .04em; text-transform: uppercase; margin-bottom: 1.5rem; }

.author-stats {
    display: inline-flex;
    align-items: center;
    gap: 1.5rem;
    background: var(--white);
    border: 1px solid #eef2f8;
    border-radius: var(--radius);
    padding: 1rem 1.75rem;
    box-shadow: var(--card-shadow);
}
.author-stat-num   { font-size: 1.6rem; font-weight: 800; color: var(--navy); line-height: 1.1; }
.author-stat-label { font-size: .75rem; color: var(--text-muted); margin-top: .2rem; letter-spacing: .04em; }
.author-stat-divider { width: 1px; height: 40px; background: #e8eef5; }

.author-quote {
    background: linear-gradient(135deg, rgba(0,196,180,.06), rgba(0,196,180,.02));
    border-left: 3px solid var(--teal);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.25rem;
    position: relative;
}
.author-quote p       { margin: 0; font-size: 1.05rem; line-height: 1.8; color: var(--text); }
.author-quote-icon    { color: var(--teal); font-size: 1.5rem; margin-bottom: .5rem; display: block; opacity: .5; }

.author-bio { font-size: 1rem; color: var(--text-muted); line-height: 1.9; margin-bottom: 1.75rem; }

.author-pillars { display: flex; flex-direction: column; gap: 1rem; }
.author-pillar  { display: flex; align-items: flex-start; gap: 1rem; }
.author-pillar-icon {
    width: 40px; height: 40px; flex-shrink: 0;
    background: rgba(0,196,180,.1);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: var(--teal);
    font-size: .95rem;
}
.author-pillar-title { font-size: .9rem; font-weight: 700; color: var(--text); margin-bottom: .15rem; }
.author-pillar-desc  { font-size: .84rem; color: var(--text-muted); line-height: 1.6; }

@media (max-width: 768px) {
    .author-avatar { width: 120px; height: 120px; font-size: 2.2rem; }
    .author-stats  { padding: .75rem 1.25rem; gap: 1rem; }
}

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE — CATALOG
═══════════════════════════════════════════════════════════ */
@media (max-width: 991px) {
    .catalog-toolbar { flex-direction: column; align-items: stretch; }
    .search-input { min-width: 0; width: 100%; }
    .sort-select  { min-width: 0; width: 100%; }
}
@media (max-width: 576px) {
    .catalog-hero { padding: 6rem 0 2.5rem; }
    .featured-section-header { flex-direction: column; align-items: flex-start; }
}