/**
 * Mobile-first responsive layer — load last.
 * Fixes nav drawer, full-width layout, touch targets on all viewports.
 */

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

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

body.congress-site,
body.verify-page {
    margin: 0;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

.vg-skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.vg-skip-link:focus {
    position: fixed;
    left: 16px;
    top: 16px;
    z-index: 20000;
    width: auto;
    height: auto;
    padding: 12px 16px;
    background: #0f766e;
    color: #fff;
    border-radius: 8px;
    font-weight: 700;
    text-decoration: none;
}

body.verify-page .cv-wrap {
    width: 100%;
    max-width: 100%;
    padding: 16px;
    box-sizing: border-box;
}

body.verify-page .cv-card,
body.verify-page .cv-countdown-grid {
    width: 100%;
    max-width: 100%;
}

img,
video,
svg {
    max-width: 100%;
    height: auto;
}

.congress-hero-banner-img {
    max-width: none;
}

.cg-shell {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: #fff;
    padding-top: env(safe-area-inset-top, 0);
    box-shadow: 0 2px 16px rgba(15, 23, 42, 0.06);
}

.cg-utility-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 8px 16px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 16px;
}

.cg-utility-contacts {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 14px;
    min-width: 0;
    flex: 1 1 200px;
}

.cg-utility-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    min-width: 0;
}

.cg-utility-link {
    word-break: break-all;
}

.cg-header-row {
    max-width: 1280px;
    margin: 0 auto;
    width: 100%;
}

.cg-header-inner {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    width: 100%;
    min-width: 0;
}

.cg-logo-zone {
    min-width: 0;
    flex: 1 1 auto;
}

.cg-logo-text h1 {
    font-size: clamp(0.78rem, 3.5vw, 1.05rem);
    line-height: 1.25;
    overflow-wrap: anywhere;
}

.cg-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    margin-left: auto;
}

/* Mobile / tablet: nav is off-canvas overlay, never in document flow */
@media (max-width: 900px) {
    .cg-shell {
        padding-top: 0;
        gap: 0;
    }

    .cg-utility {
        padding: 0 !important;
        border-bottom: none;
    }

    .cg-utility-inner {
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        padding: 6px 12px 0 !important;
        gap: 0 !important;
    }

    .cg-utility-contacts {
        flex: 0 0 auto !important;
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        gap: 0 !important;
    }

    .cg-utility-item {
        width: 100%;
        font-size: 0.78rem;
        line-height: 1.25;
        padding: 2px 0;
    }

    .cg-utility-date {
        display: none;
    }

    .cg-header {
        position: relative;
        top: auto;
        border-top: 1px solid var(--cg-line);
        border-bottom: 1px solid var(--cg-line);
        box-shadow: none !important;
    }

    .cg-header-inner {
        padding: 6px 12px !important;
        gap: 8px;
    }

    .cg-header-row {
        margin: 0;
        padding: 0;
    }

    .cg-logo-zone {
        padding: 0;
    }

    .cg-logo-text p {
        margin-top: 0;
    }

    .congress-hero {
        min-height: min(48vh, 360px);
    }

    .congress-hero.congress-hero--banner-mode {
        min-height: clamp(220px, 40vh, 380px);
    }

    .congress-hero--banner-mode .congress-hero-banner-img {
        opacity: 1 !important;
        visibility: visible !important;
    }

    .vg-stats-strip {
        margin-top: 8px;
        padding: 0 12px;
    }

    #countdown-region .countdown-strip {
        margin-top: 12px;
        margin-bottom: 12px;
    }

    /* Nav/backdrop must sit on body (see vgmf-congress.js) — below z-index avoids blocking drawer */
    #cg-nav.cg-nav {
        display: none !important;
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        left: auto;
        width: min(300px, 88vw);
        height: 100dvh;
        margin: 0;
        padding: calc(env(safe-area-inset-top, 0px) + 56px) 18px 24px;
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        background: #fff;
        box-shadow: -8px 0 32px rgba(0, 0, 0, 0.18);
        z-index: 10002;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        transform: none;
        visibility: visible;
        pointer-events: auto;
        touch-action: manipulation;
    }

    #cg-nav.cg-nav.mobile-open {
        display: flex !important;
    }

    .cg-nav-backdrop {
        display: none;
        position: fixed;
        inset: 0;
        background: rgba(15, 23, 42, 0.45);
        z-index: 10001;
        pointer-events: auto;
        touch-action: manipulation;
    }

    .cg-nav-backdrop.open {
        display: block;
    }

    body.cg-nav-open .cg-menu-toggle {
        position: relative;
        z-index: 10003;
    }

    .cg-nav-close {
        display: flex;
        align-items: center;
        justify-content: center;
        position: absolute;
        top: calc(env(safe-area-inset-top, 0px) + 12px);
        right: 14px;
        width: 44px;
        height: 44px;
        border: 1px solid #e2e8f0;
        border-radius: 12px;
        background: #fff;
        color: #0f766e;
        font-size: 1.25rem;
        cursor: pointer;
        touch-action: manipulation;
    }

    #cg-nav-menu-links {
        display: flex;
        flex-direction: column;
        width: 100%;
        gap: 4px;
    }

    #cg-nav.cg-nav a {
        min-height: 48px;
        display: flex;
        align-items: center;
        width: 100%;
        justify-content: flex-start;
    }

    #cg-nav-menu-links a[hidden],
    #cg-nav-menu-links a.menu-page-hidden {
        display: none !important;
    }

    footer li[hidden],
    footer a[hidden],
    footer li.menu-page-hidden,
    footer a.menu-page-hidden {
        display: none !important;
    }

    body.cg-nav-open {
        overflow: hidden;
    }
}

/* Desktop: horizontal nav in header row */
@media (min-width: 901px) {
    .cg-header-row {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 8px;
        padding: 0 20px 12px;
    }

    .cg-header {
        flex: 1 1 auto;
        min-width: 0;
        border: none;
        box-shadow: none;
        position: static;
    }

    .cg-header-inner {
        padding: 12px 0;
    }

    .cg-menu-toggle {
        display: none !important;
    }

    #cg-nav.cg-nav {
        display: flex !important;
        position: static;
        width: auto;
        height: auto;
        margin: 0;
        padding: 0;
        box-shadow: none;
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        justify-content: flex-end;
        gap: 6px;
        overflow: visible;
    }

    #cg-nav-menu-links {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 6px;
    }

    .cg-nav-backdrop,
    .cg-nav-close {
        display: none !important;
    }
}

/* Content: single column, full width */
.congress-hero,
.vg-stats-strip,
.vgmf-section,
.main-content,
.cg-ticker-inner,
#countdown-region,
.footer-container {
    width: 100%;
    max-width: 100%;
}

.vg-stats-strip {
    max-width: 1280px;
    margin: 20px auto 0;
    padding: 0 16px;
}

.vg-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 16px;
    max-width: 1280px;
    margin: 0 auto;
    background: linear-gradient(135deg, #ecfdf5 0%, #fff 50%, #fff7ed 100%);
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    box-shadow: 0 8px 28px rgba(15, 23, 42, 0.08);
}

.vg-stat {
    text-align: center;
    padding: 8px;
}

.vg-stat strong {
    display: block;
    font-size: clamp(1.35rem, 4vw, 1.85rem);
    font-weight: 800;
    color: #0f766e;
    line-height: 1.1;
}

.vg-stat span {
    font-size: 0.75rem;
    font-weight: 600;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

@media (min-width: 640px) {
    .vg-stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.congress-site .cards-grid,
.congress-site .home-split,
.congress-site .speakers-grid,
.congress-site .cg-quick-grid,
.congress-site .contact-grid {
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .congress-site .cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .congress-site .home-split {
        grid-template-columns: 1.2fr 0.8fr;
    }
    .congress-site .speakers-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .congress-site .cards-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .congress-site .speakers-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.congress-hero {
    min-height: min(70vh, 520px);
}

.congress-hero-content {
    padding: 32px 16px 72px;
}

.congress-hero-actions {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
}

.congress-hero-actions a {
    width: 100%;
    min-height: 48px;
    justify-content: center;
}

.congress-site .main-content {
    padding: 24px 16px 64px;
}

.congress-site .form-group input,
.congress-site .form-group textarea,
.congress-site .form-group select {
    font-size: 16px;
    min-height: 48px;
}

.cg-ticker,
.cg-ticker-inner,
.cg-ticker-viewport {
    max-width: 100%;
    overflow: hidden;
}

.cg-ticker-track {
    max-width: 100%;
}

.cg-fab-register {
    right: max(12px, env(safe-area-inset-right, 0px));
    bottom: max(16px, env(safe-area-inset-bottom, 0px));
    min-height: 48px;
    z-index: 900;
}

/* Live chat FAB stacks above mobile Register pill (home page) */
@media (max-width: 900px) {
    body:has(#cg-fab-register:not(.hidden)) #vgmf-support-launcher {
        bottom: calc(84px + env(safe-area-inset-bottom, 0px)) !important;
    }
    body:has(#cg-fab-register:not(.hidden)) #vgmf-support-panel {
        bottom: calc(152px + env(safe-area-inset-bottom, 0px)) !important;
    }
}

/* Modals & auth */
.modal-content,
.cg-modal-panel {
    width: min(100%, 440px);
    max-height: min(90dvh, 720px);
    overflow-y: auto;
}

@media (max-width: 480px) {
    .cg-utility-date {
        display: none;
    }
    .vg-stats-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}