:root {
    --fx-primary: #0077B8;
    --fx-primary-hover: #005E94;
    --fx-deep: #002D74;
    --fx-navy: #00204D;
    --fx-page: #F5F7FA;
    --fx-surface: #FFFFFF;
    --fx-surface-subtle: #F8FAFC;
    --fx-text-strong: #172033;
    --fx-text: #2D3748;
    --fx-text-muted: #667085;
    --fx-border: #DFE5EC;
    --fx-radius-sm: 6px;
    --fx-radius-md: 10px;
    --fx-radius-lg: 14px;
    --fx-shadow: 0 8px 24px rgba(23, 32, 51, 0.08);
    --font-size-base: 16px;
    --font-size-muted: 14px;
    --font-size-key: 0.75rem;
    --font-size-radio: 0.95rem;
    --font-size-file-name: 0.9rem;
    --radius-card: 12px;
    --radius-btn: 8px;
    --radius-input: 8px;
    --radius-list: 10px;
    --radius-alert: 10px;
    --radius-badge: 8px;
    --radius-setting-row: 0.75rem;
    --radius-radio: 0.7rem;
    --radius-file-item: 12px;
    --padding-card-body: 20px;
    --padding-setting-row-y: 0.875rem;
    --padding-setting-row-x: 1rem;
    --padding-radio-y: 0.5rem;
    --padding-radio-x: 0.9rem;
    --padding-file-item-y: 14px;
    --padding-file-item-x: 16px;
    --gap-settings: 1rem;
    --gap-settings-list: 0.875rem;
    --gap-radio: 0.5rem;
    --gap-file-list: 0.75rem;
    --gap-file-content: 0.6rem;
    --qr-max-width: 220px;
    --radio-min-width: 72px;
    --file-item-max-width: 720px;
}

html {
    font-size: var(--font-size-base);
}

body {
    background: var(--fx-page);
    color: var(--fx-text);
    display: flex;
    flex-direction: column;
    font-family: "DIN 2014 Rounded", Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    min-height: 100vh;
}

.fx-container {
    margin-inline: auto;
    max-width: 1180px;
    padding-inline: 24px;
    width: 100%;
}

.fx-topbar {
    background: var(--fx-surface);
    border-bottom: 1px solid var(--fx-border);
    min-height: 64px;
}

.fx-topbar__inner {
    align-items: center;
    display: flex;
    min-height: 64px;
}

.fx-brand {
    align-items: center;
    color: var(--fx-deep);
    display: inline-flex;
    font-size: 1.125rem;
    font-weight: 700;
    gap: 0.65rem;
    text-decoration: none;
}

.fx-brand:hover {
    color: var(--fx-primary-hover);
}

.fx-brand__logo {
    display: block;
    height: 30px;
    max-width: 112px;
    object-fit: contain;
    width: auto;
}

.fx-main {
    flex: 1 0 auto;
    margin-block: 32px;
}

.fx-messages {
    margin-top: 20px;
}

.fx-footer {
    background: var(--fx-surface);
    border-top: 1px solid var(--fx-border);
    color: var(--fx-text-muted);
    font-size: 0.875rem;
    margin-top: auto;
    padding-block: 18px;
    text-align: center;
}

.navbar-brand {
    letter-spacing: 0.5px;
}

.navbar-user-chip {
    align-items: center;
    display: inline-flex;
    gap: 0.45rem;
    min-width: 0;
}

.navbar-user-chip__name {
    max-width: 11rem;
    opacity: 0.75;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.navbar-user-avatar {
    border: 1px solid rgba(255, 255, 255, 0.45);
    border-radius: 50%;
    flex: 0 0 auto;
    height: 30px;
    object-fit: cover;
    width: 30px;
}

.navbar-user-avatar--fallback {
    align-items: center;
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.82);
    display: inline-flex;
    font-size: 0.78rem;
    font-weight: 700;
    justify-content: center;
    text-transform: uppercase;
}

.card {
    border: 1px solid var(--fx-border);
    border-radius: var(--fx-radius-lg);
    box-shadow: none;
}

.card-body {
    padding: var(--padding-card-body);
}

.btn {
    border-radius: var(--fx-radius-sm);
    font-weight: 600;
    min-height: 44px;
}

.btn-primary {
    background-color: var(--fx-primary);
    border-color: var(--fx-primary);
    color: #FFFFFF;
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--fx-primary-hover);
    border-color: var(--fx-primary-hover);
}

.btn-outline-primary {
    border-color: var(--fx-primary);
    color: var(--fx-primary-hover);
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
    background-color: var(--fx-primary);
    border-color: var(--fx-primary);
    color: #FFFFFF;
}

.form-control {
    border-radius: var(--radius-input);
    border-color: var(--fx-border);
    min-height: 40px;
}

.form-control:focus,
.btn:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible {
    box-shadow: 0 0 0 3px rgba(0, 160, 223, 0.24);
    outline: none;
}

.list-group-item {
    border-radius: var(--radius-list) !important;
    margin-bottom: 8px;
    transition: all 0.15s ease;
}

    .list-group-item:hover {
        transform: translateY(-1px);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    }

.text-muted {
    font-size: var(--font-size-muted);
}

.alert {
    border-radius: var(--fx-radius-md);
}

.fx-alert {
    border-width: 1px;
    box-shadow: none;
}

.badge {
    border-radius: var(--fx-radius-sm);
    font-weight: 500;
}

.card h2.h5 {
    margin-bottom: 10px;
}

.fx-home-hero {
    margin-bottom: 24px;
    max-width: 700px;
}

.fx-eyebrow {
    color: var(--fx-primary-hover);
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
    text-transform: uppercase;
}

.fx-home-hero h1,
.fx-action-panel h2,
.fx-session-list h2 {
    color: var(--fx-text-strong);
    font-weight: 700;
}

.fx-home-hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 10px;
}

.fx-home-hero__lead {
    color: var(--fx-text-muted);
    font-size: 1.125rem;
    margin: 0;
}

.fx-limit-strip {
    background: var(--fx-surface);
    border: 1px solid var(--fx-border);
    border-radius: var(--fx-radius-md);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    margin-bottom: 24px;
    overflow: hidden;
}

.fx-limit-strip__item {
    display: grid;
    gap: 4px;
    padding: 16px 20px;
}

.fx-limit-strip__item + .fx-limit-strip__item {
    border-left: 1px solid var(--fx-border);
}

.fx-limit-strip__item span {
    color: var(--fx-text-muted);
    font-size: 0.8125rem;
}

.fx-limit-strip__item strong {
    color: var(--fx-text-strong);
}

.fx-action-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-bottom: 32px;
}

.fx-action-panel {
    background: var(--fx-surface);
    border: 1px solid var(--fx-border);
    border-radius: var(--fx-radius-lg);
    display: flex;
    flex-direction: column;
    min-height: 240px;
    padding: 24px;
}

.fx-action-panel h2 {
    font-size: 1.375rem;
    margin-bottom: 10px;
}

.fx-action-panel > p:not(.fx-eyebrow) {
    color: var(--fx-text-muted);
    margin-bottom: 24px;
}

.fx-session-list {
    background: var(--fx-surface);
    border: 1px solid var(--fx-border);
    border-radius: var(--fx-radius-lg);
    padding: 24px;
}

.fx-session-list__header,
.fx-session-row {
    align-items: center;
    display: flex;
    gap: 16px;
    justify-content: space-between;
}

.fx-session-list__header {
    margin-bottom: 12px;
}

.fx-session-list__header h2 {
    font-size: 1.125rem;
    margin: 0;
}

.fx-session-row {
    border-top: 1px solid var(--fx-border);
    padding-block: 16px;
}

.fx-session-row__code {
    color: var(--fx-deep);
    font-weight: 700;
    text-decoration: none;
}

.fx-session-row__code:hover {
    color: var(--fx-primary-hover);
    text-decoration: underline;
}

.fx-empty-state {
    border: 1px dashed var(--fx-border);
    border-radius: var(--fx-radius-md);
    color: var(--fx-text-muted);
    padding: 20px;
}

.nav-tabs {
    border-bottom-color: var(--fx-border);
}

.nav-tabs .nav-link {
    border-radius: var(--fx-radius-sm) var(--fx-radius-sm) 0 0;
    color: var(--fx-text-muted);
}

.nav-tabs .nav-link.active {
    border-color: var(--fx-border) var(--fx-border) var(--fx-surface);
    color: var(--fx-deep);
    font-weight: 700;
}

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

@media (max-width: 768px) {
    :root {
        --font-size-base: 12px;
        --font-size-muted: 11px;
        --font-size-key: 0.65rem;
        --font-size-radio: 0.8rem;
        --font-size-file-name: 0.8rem;
        --padding-card-body: 12px;
        --padding-setting-row-y: 0.6rem;
        --padding-setting-row-x: 0.7rem;
        --padding-radio-y: 0.4rem;
        --padding-radio-x: 0.6rem;
        --padding-file-item-y: 12px;
        --padding-file-item-x: 14px;
        --gap-settings: 0.6rem;
        --gap-settings-list: 0.6rem;
        --gap-file-list: 0.65rem;
        --gap-file-content: 0.5rem;
        --qr-max-width: 140px;
        --radio-min-width: 55px;
        --radius-card: 9px;
        --radius-btn: 6px;
        --radius-input: 6px;
        --radius-list: 7px;
        --radius-alert: 7px;
        --radius-badge: 6px;
        --radius-file-item: 10px;
    }

    html {
        font-size: 12px !important;
    }

    body {
        font-size: 12px !important;
    }

    h1, .h1 {
        font-size: 1.2rem !important;
    }

    h2, .h2 {
        font-size: 1.1rem !important;
    }

    h3, .h3 {
        font-size: 1rem !important;
    }

    h4, .h4 {
        font-size: 0.95rem !important;
    }

    h5, .h5 {
        font-size: 0.9rem !important;
    }

    .btn {
        font-size: 0.8rem !important;
        padding: 0.35rem 0.6rem !important;
    }

    .form-control {
        font-size: 0.8rem !important;
    }

    .text-muted,
    small,
    .small {
        font-size: 0.7rem !important;
    }

    .badge {
        font-size: 0.65rem !important;
    }

    .nav-link {
        font-size: 0.8rem !important;
    }
}

@media (max-width: 767.98px) {
    .session-page .session-hero-card .card-body,
    .session-page .card.shadow-sm > .card-body {
        padding: 0.95rem;
    }

    .session-page .session-panel,
    .session-page .session-stat-card,
    .session-page .session-participant-card,
    .session-page .session-hero-card__meta-item {
        padding: 0.85rem;
    }

    .session-page .session-section-stack,
    .session-page .session-hero-card__meta {
        gap: 0.7rem;
    }

    .session-page .session-stat-grid,
    .session-page .session-chip-list {
        gap: 0.55rem;
    }

    .session-page .session-hero-card__eyebrow,
    .session-page .session-chip,
    .session-page .session-live-indicator {
        font-size: 0.72rem;
    }

    .session-page .session-chip {
        padding: 0.45rem 0.7rem;
    }

    .session-page .session-panel__badge {
        min-width: 2rem;
        padding: 0.35rem 0.6rem;
    }

    .session-page .session-participant-card__avatar {
        width: 2.3rem;
        height: 2.3rem;
    }
}

@media (max-width: 575.98px) {
    .fx-container {
        padding-inline: 16px;
    }

    .fx-main {
        margin-top: 0.85rem !important;
        margin-bottom: 0.85rem !important;
    }

    .container {
        padding-inline: 0.75rem;
    }

    .navbar .container {
        gap: 0.45rem;
    }

    .navbar-brand {
        font-size: 0.95rem;
    }

    .navbar-user-chip__name {
        max-width: 7rem;
    }

    .navbar-user-avatar {
        height: 26px;
        width: 26px;
    }

    .navbar .d-flex.align-items-center.gap-3.ms-auto {
        gap: 0.45rem !important;
        flex-wrap: wrap;
        justify-content: flex-end;
    }

    .list-group-item {
        margin-bottom: 6px;
    }

    #home-page-root .row.g-4,
    .session-page.row.g-4 {
        --bs-gutter-x: 0.8rem;
        --bs-gutter-y: 0.8rem;
    }

    #home-page-root hr {
        margin: 0.75rem 0;
    }

    #home-page-root .card > .card-body,
    #home-page-root .list-group-item,
    #home-page-root .collapse .card-body,
    .session-page .session-hero-card .card-body,
    .session-page .card.shadow-sm > .card-body,
    .session-page .session-panel,
    .session-page .session-stat-card,
    .session-page .session-participant-card,
    .session-page .session-hero-card__meta-item {
        padding: 0.8rem;
    }

    .session-page .tab-content {
        min-height: 0;
    }

    .session-page .session-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        gap: 0.35rem;
        margin-bottom: 0.75rem !important;
        padding-bottom: 0.2rem;
    }

    .session-page .session-tabs .nav-item {
        flex: 0 0 auto;
    }

    .session-page .session-tabs .nav-link {
        padding: 0.4rem 0.75rem;
        font-size: 0.75rem !important;
    }

    .session-page .session-hero-card__eyebrow,
    .session-page .session-chip,
    .session-page .session-live-indicator {
        padding: 0.3rem 0.6rem;
    }

    .session-page .session-chip-list,
    .session-page .session-panel__header,
    .session-page .session-file-item__top,
    .session-page .session-participant-card {
        gap: 0.65rem;
    }

    .session-page .session-panel__header {
        margin-bottom: 0.75rem;
    }

    .session-page .session-hero-card h1 {
        font-size: 1.05rem !important;
    }

    .session-page .session-panel__header .small {
        display: none;
    }

    .session-page .join-access-card__hint {
        min-height: 88px;
        padding: 0.75rem 0.85rem;
    }

    .session-page .participant-remove-form,
    .session-page .participant-remove-form .btn,
    .session-page .session-file-actions,
    .session-page .session-file-item__top .btn {
        width: 100%;
    }
}

@media (max-width: 720px) {
    .fx-limit-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .fx-limit-strip__item:nth-child(odd) {
        border-left: 0;
    }

    .fx-limit-strip__item:nth-child(n + 3) {
        border-top: 1px solid var(--fx-border);
    }

    .fx-action-grid {
        grid-template-columns: 1fr;
    }

    .fx-action-panel,
    .fx-session-list {
        padding: 20px;
    }
}