/* =============================================================
   FLX AI Hub — Shared Stylesheet
   All pages load this file. Navbar is injected by navbar.js.
   ============================================================= */

/* --- CSS Variables & Reset --- */
:root {
    --primary-blue: #0046ad;
    --primary-green: #58a618;
    --neutral-gray: #939598;
    --dark-gray: #1f2937;
    --light-bg: #f8fafc;
    --white: #ffffff;
    --gradient: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-green) 100%);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-hover: 0 10px 25px -5px rgba(0,0,0,0.12), 0 4px 10px -3px rgba(0,0,0,0.06);
    --radius: 15px;
    --radius-sm: 8px;
    --radius-pill: 9999px;
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Rubik', sans-serif;
    color: var(--dark-gray);
    background: var(--white);
    line-height: 1.6;
}

h1, h2, h3, h4, h5 {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.25;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

img {
    display: block;
    max-width: 100%;
}

/* --- Layout Utilities --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.page-section {
    padding: 4rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
}

.section-header p {
    color: var(--neutral-gray);
    font-size: 1.05rem;
    max-width: 620px;
    margin: 0 auto;
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--primary-green);
    margin-bottom: 0.75rem;
}

/* --- Text Utilities --- */
.text-blue  { color: var(--primary-blue); }
.text-green { color: var(--primary-green); }
.text-gray  { color: var(--neutral-gray); }
.text-center { text-align: center; }

.text-gradient {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* =============================================
   HEADER / NAVBAR  (injected by navbar.js)
   ============================================= */
.site-header {
    position: sticky;
    top: 0;
    z-index: 200;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid #e5e7eb;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    flex-shrink: 0;
}

.site-logo img {
    width: 48px;
    height: auto;
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.logo-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--primary-blue);
    line-height: 1;
}

.logo-sub {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--primary-green);
    text-transform: uppercase;
}

/* Nav links */
.main-nav {
    display: flex;
    align-items: center;
    gap: 0.15rem;
}

.nav-link {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--neutral-gray);
    padding: 0.45rem 0.8rem;
    border-radius: var(--radius-sm);
    transition: color 0.18s, background 0.18s;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
}

.nav-link:hover {
    color: var(--primary-blue);
    background: rgba(0,70,173,0.06);
}

.nav-link.active {
    color: var(--primary-blue);
    background: rgba(0,70,173,0.09);
}

/* Dropdown */
.nav-dropdown {
    position: relative;
}

/* Transparent bridge that fills the gap between trigger and menu,
   keeping .nav-dropdown:hover true as the mouse moves down */
.nav-dropdown::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 8px;
}

.dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    user-select: none;
}

.dropdown-trigger .chevron {
    transition: transform 0.2s;
    display: flex;
    align-items: center;
}

.nav-dropdown:hover .chevron,
.nav-dropdown.open .chevron {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: var(--radius);
    padding: 0.5rem;
    min-width: 200px;
    box-shadow: var(--shadow-hover);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 0.18s, transform 0.18s;
    z-index: 300;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 0.55rem 1rem;
    border-radius: var(--radius-sm);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--dark-gray);
    transition: background 0.15s, color 0.15s;
    text-decoration: none;
    white-space: nowrap;
}

.dropdown-menu a:hover {
    background: rgba(0,70,173,0.07);
    color: var(--primary-blue);
}

/* External "official" link pill */
.official-link {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.45rem 1.1rem;
    background: var(--primary-blue);
    color: white;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.8rem;
    border-radius: var(--radius-pill);
    transition: background 0.2s, transform 0.2s;
    white-space: nowrap;
    margin-left: 0.5rem;
    text-decoration: none;
}

.official-link:hover {
    background: #003d99;
    transform: translateY(-1px);
}

/* Mobile hamburger */
.mobile-menu-btn {
    display: none;
    align-items: center;
    justify-content: center;
    padding: 0.4rem;
    color: var(--primary-blue);
    border-radius: var(--radius-sm);
    transition: background 0.15s;
}

.mobile-menu-btn:hover {
    background: rgba(0,70,173,0.07);
}

/* =============================================
   HERO SECTIONS
   ============================================= */
.page-hero {
    text-align: center;
    padding: 5rem 1.5rem 4rem;
    background-color: var(--white);
    background-image:
        radial-gradient(circle at 80% 20%, rgba(0,70,173,0.06), transparent 50%),
        radial-gradient(circle at 20% 80%, rgba(88,166,24,0.06), transparent 50%);
    position: relative;
    overflow: hidden;
}

/* Subtle hex tile background */
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='104' viewBox='0 0 60 104' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 0l25.98 15v30L30 60L4.02 45V15z' fill='none' stroke='%23939598' stroke-width='1' stroke-opacity='0.07'/%3E%3Cpath d='M30 52l25.98 15v30L30 112L4.02 97V67z' fill='none' stroke='%23939598' stroke-width='1' stroke-opacity='0.07'/%3E%3C/svg%3E");
    pointer-events: none;
}

.page-hero .container {
    position: relative;
    z-index: 1;
}

.page-hero h1 {
    font-size: 2.75rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.page-hero p.hero-sub {
    font-size: 1.1rem;
    color: var(--neutral-gray);
    max-width: 660px;
    margin: 0 auto 2rem;
}

/* =============================================
   CARDS  (Blog, Tools — content-card style)
   ============================================= */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.75rem;
}

.content-card {
    background: white;
    border-radius: var(--radius);
    border: 1px solid #e8eaed;
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    text-decoration: none;
    color: inherit;
}

.content-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: #c8d4ee;
}

.card-thumb-wrap {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--light-bg);
    flex-shrink: 0;
}

.card-thumb-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.content-card:hover .card-thumb-wrap img {
    transform: scale(1.04);
}

/* Placeholder when no thumbnail */
.card-thumb-placeholder {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, rgba(0,70,173,0.08) 0%, rgba(88,166,24,0.08) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-blue);
    flex-shrink: 0;
}

.card-body {
    padding: 1.25rem 1.5rem 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    border-top: 1px solid #f3f4f6;
}

.card-date {
    font-size: 0.78rem;
    color: var(--neutral-gray);
    margin-bottom: 0.35rem;
    font-weight: 500;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: 0.6rem;
    line-height: 1.35;
}

.card-desc {
    font-size: 0.9rem;
    color: #6b7280;
    line-height: 1.65;
    flex: 1;
    margin-bottom: 1.1rem;
}

.card-read-link {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--primary-blue);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    transition: gap 0.2s;
    margin-top: auto;
}

.content-card:hover .card-read-link {
    gap: 0.55rem;
}

/* =============================================
   WEBINAR LISTING CARDS
   ============================================= */
.webinar-card {
    background: white;
    border-radius: var(--radius);
    border: 1px solid #e8eaed;
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s, box-shadow 0.25s;
}

.webinar-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.webinar-card .card-thumb-wrap {
    position: relative;
}

.webinar-card .play-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.18);
    opacity: 0;
    transition: opacity 0.25s;
}

.webinar-card:hover .play-overlay {
    opacity: 1;
}

.play-overlay svg {
    color: white;
    filter: drop-shadow(0 2px 6px rgba(0,0,0,0.4));
}

/* =============================================
   UPCOMING WEBINAR CARDS
   ============================================= */
.upcoming-card {
    background: white;
    border-radius: var(--radius);
    border: 1px solid #e8eaed;
    border-top: 4px solid var(--primary-green);
    box-shadow: var(--shadow);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: transform 0.25s, box-shadow 0.25s;
}

.upcoming-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.upcoming-badge {
    display: inline-block;
    background: #f0fdf4;
    color: var(--primary-green);
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.2rem 0.65rem;
    border-radius: var(--radius-pill);
    align-self: flex-start;
}

.upcoming-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-top: 0.25rem;
}

.upcoming-presenter {
    font-size: 0.85rem;
    color: var(--neutral-gray);
    font-style: italic;
}

.upcoming-card .card-desc {
    font-size: 0.9rem;
    color: #6b7280;
    line-height: 1.6;
    flex: 1;
}

.register-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.3rem;
    background: var(--primary-blue);
    color: white;
    border-radius: var(--radius-pill);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    transition: background 0.2s, transform 0.2s;
    align-self: flex-start;
    margin-top: 0.5rem;
    text-decoration: none;
}

.register-btn:hover {
    background: #003d99;
    transform: translateY(-1px);
}

/* =============================================
   RESOURCE / TOOL CARDS (Innovation Lab style)
   ============================================= */
.resource-card {
    background: white;
    border-radius: var(--radius);
    border: 1px solid #e8eaed;
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    text-decoration: none;
    color: inherit;
}

.resource-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: #b8d4b8;
}

.resource-card .card-body {
    border-top: 1px solid #f3f4f6;
}

.resource-header-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.resource-card .card-title {
    margin-bottom: 0;
}

.resource-launch {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--primary-green);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    margin-top: auto;
    padding-top: 1rem;
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-pill);
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 0.95rem;
    transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.btn-primary {
    background: var(--primary-blue);
    color: white;
}

.btn-primary:hover { background: #003d99; }

.btn-outline {
    background: white;
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
}

.btn-outline:hover {
    background: var(--primary-blue);
    color: white;
}

.btn-green {
    background: var(--primary-green);
    color: white;
}

.btn-green:hover { background: #4a8f14; }

/* =============================================
   EMPTY STATE
   ============================================= */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--neutral-gray);
}

.empty-state p {
    font-size: 1rem;
    margin-top: 0.75rem;
}

/* =============================================
   SECTION DIVIDERS
   ============================================= */
.section-divider {
    border: none;
    border-top: 1px solid #e8eaed;
    margin: 0;
}

/* Alternating background for sections */
.bg-light {
    background: var(--light-bg);
}

/* =============================================
   WEBINAR SUBPAGE — Article Layout
   ============================================= */
.article-layout {
    max-width: 860px;
    margin: 0 auto;
    padding: 3rem 1.5rem 4rem;
}

.article-breadcrumb {
    font-size: 0.85rem;
    color: var(--neutral-gray);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.article-breadcrumb a {
    color: var(--primary-blue);
    font-weight: 600;
}

.article-breadcrumb a:hover { text-decoration: underline; }

.article-meta-row {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    font-size: 0.875rem;
    color: var(--neutral-gray);
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e8eaed;
}

.article-meta-row span {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.video-embed-wrap {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: var(--radius);
    background: #000;
    margin-bottom: 2.5rem;
}

.video-embed-wrap iframe {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    border: 0;
}

.article-body h2 {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 2rem 0 0.75rem;
    color: var(--dark-gray);
}

.article-body p {
    margin-bottom: 1.1rem;
    color: #374151;
    font-size: 0.975rem;
    line-height: 1.75;
}

.article-body a {
    color: var(--primary-blue);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.article-body a:hover { color: #003d99; }

.article-body img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
    cursor: zoom-in;
    transition: opacity 0.2s;
    display: block;
}

.article-body img:hover { opacity: 0.88; }

.article-body code {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.875em;
    background: #f1f5f9;
    padding: 0.15em 0.4em;
    border-radius: 4px;
    color: var(--dark-gray);
}

.caption {
    display: block;
    text-align: center;
    font-size: 0.855rem;
    font-style: italic;
    color: var(--neutral-gray);
    margin-bottom: 1.75rem;
    line-height: 1.55;
}

/* =============================================
   LIGHTBOX
   ============================================= */
.lightbox-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.88);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    cursor: zoom-out;
}

.lightbox-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.lightbox-img {
    max-width: min(90vw, 1100px);
    max-height: 85vh;
    border-radius: var(--radius-sm);
    box-shadow: 0 20px 60px rgba(0,0,0,0.5);
    cursor: default;
    object-fit: contain;
    display: block;
}

.lightbox-btn {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.13);
    border: none;
    color: white;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 1001;
    transition: background 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-btn:hover { background: rgba(255,255,255,0.28); }
.lightbox-prev { left: 1.25rem; }
.lightbox-next { right: 1.25rem; }

.lightbox-close {
    position: fixed;
    top: 1rem;
    right: 1.25rem;
    background: rgba(255,255,255,0.13);
    border: none;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 1001;
    transition: background 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-close:hover { background: rgba(255,255,255,0.28); }

.lightbox-counter {
    position: fixed;
    bottom: 1.25rem;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255,255,255,0.55);
    font-size: 0.82rem;
    z-index: 1001;
    font-family: 'Montserrat', sans-serif;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.asset-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-top: 1rem;
}

.asset-list li a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 0.9rem;
    transition: gap 0.15s;
}

.asset-list li a:hover {
    gap: 0.65rem;
    text-decoration: underline;
}

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
    background: var(--dark-gray);
    color: white;
    padding: 2.5rem 0;
    margin-top: 5rem;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='104' viewBox='0 0 60 104' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 0l25.98 15v30L30 60L4.02 45V15z' fill='none' stroke='%23ffffff' stroke-width='1' stroke-opacity='0.04'/%3E%3C/svg%3E");
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
}

.footer-logo img { width: 42px; }

.footer-logo .logo-title { color: white; font-size: 1rem; }
.footer-logo .logo-sub   { color: rgba(255,255,255,0.45); }

.footer-copy {
    color: #9ca3af;
    font-size: 0.82rem;
}

.podcast-embed {
    border: 0px;
    width: 100%;
    height: 500px;
    border-radius: 15px;
}

/* =============================================
   RESPONSIVE  (≤ 768px)
   ============================================= */
@media (max-width: 768px) {
    /* Nav */
    .mobile-menu-btn { display: flex; }

    .main-nav {
        display: none;
        position: fixed;
        top: 72px;
        left: 0; right: 0;
        background: white;
        flex-direction: column;
        align-items: stretch;
        padding: 0.75rem 1rem 1.25rem;
        border-bottom: 1px solid #e5e7eb;
        box-shadow: var(--shadow-hover);
        z-index: 199;
        gap: 0.1rem;
        max-height: calc(100vh - 72px);
        overflow-y: auto;
    }

    .main-nav.open { display: flex; }

    .nav-link {
        padding: 0.75rem 0.8rem;
        border-radius: var(--radius-sm);
        font-size: 0.95rem;
    }

    /* Dropdown in mobile: show/hide with .open class */
    .dropdown-trigger { justify-content: space-between; width: 100%; }

    .nav-dropdown .dropdown-menu {
        position: static;
        opacity: 1;
        pointer-events: auto;
        transform: none;
        box-shadow: none;
        border: none;
        border-radius: 0;
        padding: 0 0 0 1rem;
        min-width: unset;
        background: transparent;
        display: none;
    }

    .nav-dropdown.open .dropdown-menu { display: block; }

    .dropdown-menu a {
        padding: 0.55rem 0.8rem;
        font-size: 0.9rem;
    }

    .official-link {
        margin-left: 0;
        margin-top: 0.5rem;
        justify-content: center;
    }

    /* Hero */
    .page-hero h1 { font-size: 2rem; }
    .page-hero p.hero-sub { font-size: 1rem; }

    /* Cards */
    .cards-grid { grid-template-columns: 1fr; }

    /* Section headers */
    .section-header h2 { font-size: 1.75rem; }

    /* Article */
    .article-layout { padding: 2rem 1rem 3rem; }

    /* Footer */
    .footer-inner { flex-direction: column; align-items: center; text-align: center; }
}

@media (max-width: 480px) {
    .page-hero { padding: 3.5rem 1rem 3rem; }
    .page-hero h1 { font-size: 1.7rem; }
}