/* Shared mobile navigation for both the studio and Synapse page themes. */
.header-mobile-heading,
.header-account-avatar,
.header-account-label {
    display: none;
}

.mobile-ai-tool summary {
    list-style: none;
    cursor: pointer;
}

.mobile-ai-tool summary::-webkit-details-marker {
    display: none;
}

@media (max-width: 960px) {
    html.header-overlay-open,
    body.header-overlay-open {
        overflow: hidden;
        overscroll-behavior: none;
    }

    body.header-overlay-open .app-header {
        z-index: 1200;
        /* A blurred header would constrain its fixed-position dialog. */
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    body.header-overlay-open .app-header .header-mobile-toggle {
        visibility: hidden;
    }

    .app-header .header-mobile-toggle {
        min-width: 44px;
        min-height: 44px;
        transition: color 180ms ease, background 180ms ease, border-color 180ms ease;
    }

    .app-header .header-nav-group {
        position: fixed;
        inset: 0;
        z-index: 200;
        display: flex;
        align-items: flex-start;
        justify-content: flex-end;
        width: 100%;
        height: 100vh;
        height: 100dvh;
        margin: 0;
        padding: max(12px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(12px, env(safe-area-inset-left));
        overflow: hidden;
        background: rgba(30, 27, 25, 0.38);
        backdrop-filter: blur(6px);
        -webkit-backdrop-filter: blur(6px);
        visibility: hidden;
        opacity: 0;
        pointer-events: none;
        transition: opacity 180ms ease;
    }

    .app-header .header-nav-group.is-open {
        visibility: visible;
        opacity: 1;
        pointer-events: auto;
    }

    .app-header .header-nav-panel {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        flex: 0 1 420px;
        gap: 0;
        width: 100%;
        max-height: 100%;
        min-height: 0;
        margin: 0;
        padding: 0 20px;
        overflow-y: auto;
        overscroll-behavior: contain;
        border: 1px solid rgba(255, 255, 255, 0.8);
        border-radius: 24px;
        background: #fcfbf9;
        color: #292725;
        color-scheme: light;
        font-family: 'Inter', 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
        box-shadow: 0 24px 80px rgba(40, 25, 18, 0.24);
        transform: translateY(-8px);
        transition: transform 180ms ease;
        scrollbar-width: thin;
    }

    .app-header .header-nav-group.is-open .header-nav-panel {
        transform: translateY(0);
    }

    .app-header .header-mobile-heading {
        position: sticky;
        top: 0;
        z-index: 1;
        display: flex;
        flex: none;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        padding: 24px 0 20px;
        background: #fcfbf9;
    }

    .app-header .header-mobile-eyebrow {
        margin: 0 0 5px;
        color: #8b7566;
        font-size: 10px;
        line-height: 1.5;
        font-weight: 650;
        letter-spacing: 0.14em;
    }

    .app-header #header-mobile-title {
        margin: 0;
        color: #292725;
        font-size: 26px;
        line-height: 1.2;
        font-weight: 650;
        letter-spacing: -0.04em;
    }

    .app-header .header-mobile-close {
        display: inline-flex;
        flex: 0 0 44px;
        align-items: center;
        justify-content: center;
        width: 44px;
        height: 44px;
        padding: 0;
        border: 1px solid #e6e1db;
        border-radius: 50%;
        background: #f3f0eb;
        color: #5f5750;
        cursor: pointer;
    }

    .app-header .header-center {
        display: flex;
        flex: none;
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        gap: 8px;
        padding: 0 0 22px;
    }

    .app-header .header-center > * {
        width: 100%;
        margin: 0;
    }

    .app-header .nav-dropdown,
    .app-header .header-actions-desktop {
        display: none;
    }

    .app-header .mobile-ai-tool {
        display: block;
    }

    .app-header .header-center .mobile-plain-link,
    .app-header .mobile-ai-tool__toggle {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        min-height: 64px;
        padding: 18px;
        border: 1px solid #e9e5df;
        border-radius: 14px;
        background: #ffffff;
        color: #292725;
        font-size: 16px;
        line-height: 1.4;
        font-weight: 600;
        letter-spacing: -0.02em;
        text-transform: none;
        text-decoration: none;
        white-space: normal;
        overflow-wrap: anywhere;
        box-shadow: 0 2px 3px rgba(45, 33, 23, 0.02);
        transition: background 150ms ease, border-color 150ms ease;
    }

    .app-header .mobile-plain-link::after {
        content: '';
        flex: 0 0 7px;
        width: 7px;
        height: 7px;
        margin-right: 3px;
        border-top: 1.5px solid #a5998e;
        border-right: 1.5px solid #a5998e;
        transform: rotate(45deg);
    }

    .app-header .header-center .mobile-plain-link:hover,
    .app-header .mobile-ai-tool__toggle:hover {
        background: #fff5ed;
        border-color: #edcbb5;
        color: #8c421d;
    }

    .app-header .mobile-ai-tool__toggle span:last-child {
        color: #a5998e;
        transition: transform 150ms ease;
    }

    .app-header .mobile-ai-tool[open] summary span:last-child {
        transform: rotate(180deg);
    }

    .app-header .mobile-ai-tool__menu {
        display: flex;
        flex-direction: column;
        gap: 2px;
        margin-top: 6px;
        padding: 6px;
        border: 1px solid #e9e5df;
        border-radius: 14px;
        background: #f4f1ed;
    }

    .app-header .mobile-ai-tool__menu a,
    .app-header .mobile-ai-tool__menu .disabled {
        display: flex;
        align-items: center;
        min-height: 44px;
        padding: 11px 12px;
        border: 0;
        border-radius: 9px;
        color: #5f5750;
        font-size: 14px;
        line-height: 1.5;
        font-weight: 500;
        letter-spacing: 0;
        text-transform: none;
        text-decoration: none;
        white-space: normal;
        overflow-wrap: anywhere;
    }

    .app-header .mobile-ai-tool__menu a:hover {
        background: #ffffff;
        color: #8c421d;
    }

    .app-header .mobile-ai-tool__menu a.mobile-hidden {
        display: none;
    }

    .app-header .header-actions.header-actions-mobile {
        display: flex;
        flex: none;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        width: 100%;
        min-width: 0;
        margin: 0;
        padding: 20px 0;
        border-top: 1px solid #e9e5df;
    }

    .app-header .header-actions-mobile .header-greeting {
        display: flex;
        flex: 1;
        align-items: center;
        gap: 10px;
        min-width: 0;
        min-height: 44px;
        color: #292725;
        text-decoration: none;
    }

    .app-header .header-account-avatar {
        display: flex;
        flex: 0 0 40px;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        border: 1px solid #eedac9;
        border-radius: 50%;
        background: #f7e7d8;
        color: #90592f;
        font-size: 16px;
        font-weight: 600;
    }

    .app-header .header-account-details {
        display: flex;
        flex-direction: column;
        min-width: 0;
        gap: 3px;
    }

    .app-header .header-account-label {
        display: block;
        color: #86796e;
        font-size: 11px;
        line-height: 1.4;
        font-weight: 400;
    }

    .app-header .header-account-name {
        overflow: hidden;
        color: #37312b;
        font-size: 14px;
        line-height: 1.4;
        font-weight: 600;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .app-header .header-actions-mobile .header-action-form {
        flex: none;
        margin: 0;
    }

    .app-header .header-actions-mobile .header-button {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-height: 44px;
        padding: 10px 14px;
        border: 1px solid #ddd6ce;
        border-radius: 12px;
        background: #fcfbf9;
        color: #65584d;
        font-family: inherit;
        font-size: 13px;
        line-height: 1.4;
        font-weight: 600;
        letter-spacing: 0;
        text-transform: none;
        text-decoration: none;
        white-space: nowrap;
        box-shadow: none;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
    }

    .app-header .header-actions-mobile > .header-button {
        width: 100%;
        min-height: 48px;
        border-color: #34302c;
        background: #34302c;
        color: #ffffff;
        font-size: 14px;
    }

    .app-header .header-actions-mobile .header-button:hover,
    .app-header .header-mobile-close:hover {
        border-color: #b8a898;
        background: #eee6dd;
        color: #37312b;
        transform: none;
        box-shadow: none;
    }

    .app-header .header-nav-panel :is(a, button, summary):focus-visible {
        outline: 2px solid #a65b2e;
        outline-offset: 3px;
    }
}

@media (max-width: 360px) {
    .app-header .header-nav-panel {
        padding-inline: 16px;
        border-radius: 20px;
    }

    .app-header .header-center .mobile-plain-link,
    .app-header .mobile-ai-tool__toggle {
        padding: 15px;
        font-size: 15px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .app-header .header-nav-group,
    .app-header .header-nav-panel {
        transition: none;
    }
}