/* =========================================================
   MSMail application layout
   Sidebar, topbar, theme shell, and mobile navigation only
   ========================================================= */

:root {
    --msmail-sidebar-width: 270px;
    --msmail-sidebar-collapsed: 82px;
    --msmail-topbar-height: 68px;
    --msmail-mobile-nav-height: 72px;
    --msmail-layout-z-sidebar: 1100;
    --msmail-layout-z-topbar: 900;
    --msmail-layout-z-mobile: 1300;
}

html,
body {
    min-height: 100%;
}

body {
    overflow-x: hidden;
}

.msmail-app-shell {
    min-height: 100vh;
}

.msmail-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: var(--msmail-layout-z-sidebar);
    display: flex;
    width: var(--msmail-sidebar-width);
    height: 100dvh;
    flex-direction: column;
    border-right: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface) 92%, var(--bg));
    transition: width .18s ease, transform .18s ease;
}

.msmail-sidebar-top {
    flex: 0 0 auto;
    padding: 15px;
}

.msmail-brand {
    display: flex;
    min-height: 54px;
    align-items: center;
    gap: 12px;
    color: var(--text);
    text-decoration: none;
}

.msmail-brand-icon {
    display: grid;
    width: 48px;
    min-width: 48px;
    height: 48px;
    place-items: center;
    border-radius: 16px;
    background: linear-gradient(145deg, var(--primary), color-mix(in srgb, var(--primary) 62%, #9b5cff));
    color: #fff;
    font-size: 20px;
    box-shadow: 0 12px 28px color-mix(in srgb, var(--primary) 24%, transparent);
}

.msmail-brand-copy,
.msmail-user-copy {
    display: grid;
    min-width: 0;
}

.msmail-brand-copy strong {
    overflow: hidden;
    font-size: 15px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.msmail-brand-copy small,
.msmail-user-copy small {
    overflow: hidden;
    color: var(--muted);
    font-size: 10px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.msmail-user-card {
    display: grid;
    gap: 11px;
    margin-top: 14px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--surface-2);
}

.msmail-user-row {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 10px;
}

.msmail-user-avatar {
    display: grid;
    width: 40px;
    min-width: 40px;
    height: 40px;
    place-items: center;
    border-radius: 13px;
    background: color-mix(in srgb, var(--primary) 15%, var(--surface));
    color: color-mix(in srgb, var(--primary) 75%, #fff);
    font-weight: 800;
}

.msmail-user-copy strong {
    overflow: hidden;
    font-size: 11px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.msmail-organization-chip,
.msmail-environment-badge {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 7px;
    color: var(--muted);
    font-size: 9px;
}

.msmail-organization-chip span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.msmail-environment-badge {
    width: max-content;
    max-width: 100%;
    padding: 5px 8px;
    border: 1px solid color-mix(in srgb, var(--primary) 25%, var(--line));
    border-radius: 999px;
    background: color-mix(in srgb, var(--primary) 10%, transparent);
    color: color-mix(in srgb, var(--primary) 70%, #fff);
    font-weight: 800;
}

.msmail-environment-badge i,
.msmail-system-status i {
    color: var(--green);
    font-size: 7px;
}

.msmail-sidebar-nav {
    display: grid;
    min-height: 0;
    flex: 1 1 auto;
    align-content: start;
    gap: 4px;
    padding: 5px 13px 82px;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
}

.msmail-nav-section {
    margin: 15px 10px 6px;
    color: var(--muted);
    font-size: 8px;
    font-weight: 800;
    letter-spacing: .09em;
    text-transform: uppercase;
    white-space: nowrap;
}

.msmail-nav-link {
    display: flex;
    min-height: 43px;
    align-items: center;
    gap: 12px;
    padding: 0 11px;
    border-radius: 12px;
    color: var(--muted);
    text-decoration: none;
    white-space: nowrap;
}

.msmail-nav-link:hover,
.msmail-nav-link.active {
    background: color-mix(in srgb, var(--primary) 13%, transparent);
    color: var(--text);
}

.msmail-nav-icon {
    display: grid;
    width: 25px;
    min-width: 25px;
    place-items: center;
    font-size: 14px;
}

.msmail-nav-label {
    overflow: hidden;
    text-overflow: ellipsis;
}

.msmail-sidebar-toggle {
    position: absolute;
    right: -15px;
    bottom: 50%;
    display: grid;
    width: 30px;
    height: 30px;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--surface);
    color: var(--muted);
    cursor: pointer;
    box-shadow: var(--shadow);
}

.msmail-main {
    min-height: 100vh;
    margin-left: var(--msmail-sidebar-width);
    transition: margin-left .18s ease;
}

.msmail-topbar {
    position: sticky;
    top: 0;
    z-index: var(--msmail-layout-z-topbar);
    display: flex;
    min-height: var(--msmail-topbar-height);
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 0 22px;
    border-bottom: 1px solid var(--line);
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(16px);
}

.msmail-topbar-left,
.msmail-topbar-actions {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 10px;
}

.msmail-topbar-title {
    min-width: 0;
}

.msmail-topbar-title h1 {
    margin: 0;
    overflow: hidden;
    font-size: 15px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.msmail-topbar-title p {
    margin: 3px 0 0;
    overflow: hidden;
    color: var(--muted);
    font-size: 9px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.msmail-system-status,
.msmail-topbar-compose,
.msmail-topbar-icon,
.msmail-mobile-menu-button {
    display: inline-flex;
    min-height: 40px;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface);
    color: var(--text);
    text-decoration: none;
}

.msmail-system-status {
    min-height: 34px;
    padding: 0 10px;
    color: var(--muted);
    font-size: 9px;
}

.msmail-topbar-compose {
    padding: 0 13px;
    border-color: var(--primary);
    background: var(--primary);
    color: #fff;
    font-size: 10px;
    font-weight: 800;
}

.msmail-topbar-icon,
.msmail-mobile-menu-button {
    width: 40px;
    padding: 0;
    cursor: pointer;
}

.msmail-mobile-menu-button {
    display: none;
}

.msmail-content {
    padding: 22px;
}

.msmail-alert {
    margin-bottom: 16px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface);
}

.msmail-alert.success {
    border-color: color-mix(in srgb, var(--green) 35%, var(--line));
    color: var(--green);
}

.msmail-alert.danger,
.msmail-alert.error {
    border-color: color-mix(in srgb, var(--red) 35%, var(--line));
    color: var(--red);
}

.msmail-sidebar-backdrop,
.msmail-fab-backdrop {
    position: fixed;
    inset: 0;
    z-index: calc(var(--msmail-layout-z-mobile) - 2);
    display: none;
    background: rgba(3, 8, 18, .68);
    backdrop-filter: blur(4px);
}

.msmail-mobile-nav {
    display: none;
}

.msmail-fab-menu {
    position: fixed;
    right: 15px;
    bottom: calc(var(--msmail-mobile-nav-height) + 16px);
    z-index: var(--msmail-layout-z-mobile);
    display: none;
    width: min(350px, calc(100vw - 30px));
    max-height: calc(100dvh - 120px);
    padding: 12px;
    overflow-y: auto;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--surface);
    box-shadow: var(--shadow);
    left:50%;
right:auto;
transform:translateX(-50%);
width:min(380px, calc(100vw - 32px));
}

.msmail-fab-menu.open,
.msmail-fab-backdrop.open,
.msmail-sidebar-backdrop.open {
    display: block;
}

.msmail-fab-group {
    display: grid;
    gap: 5px;
}

.msmail-fab-group + .msmail-fab-group {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--line);
}

.msmail-fab-group small {
    padding: 0 8px 5px;
    color: var(--muted);
    font-size: 8px;
    font-weight: 800;
    text-transform: uppercase;
}

.msmail-fab-group a {
    display: flex;
    min-height: 42px;
    align-items: center;
    gap: 11px;
    padding: 0 10px;
    border-radius: 11px;
    color: var(--text);
    text-decoration: none;
}

.msmail-fab-group a:hover {
    background: color-mix(in srgb, var(--primary) 10%, transparent);
}

.msmail-app-shell.sidebar-collapsed .msmail-sidebar {
    width: var(--msmail-sidebar-collapsed);
}

.msmail-app-shell.sidebar-collapsed .msmail-main {
    margin-left: var(--msmail-sidebar-collapsed);
}

.msmail-app-shell.sidebar-collapsed .msmail-brand {
    justify-content: center;
}

.msmail-app-shell.sidebar-collapsed .msmail-brand-copy,
.msmail-app-shell.sidebar-collapsed .msmail-user-card,
.msmail-app-shell.sidebar-collapsed .msmail-nav-section,
.msmail-app-shell.sidebar-collapsed .msmail-nav-label {
    display: none;
}

.msmail-app-shell.sidebar-collapsed .msmail-sidebar-nav {
    padding-right: 10px;
    padding-left: 10px;
}

.msmail-app-shell.sidebar-collapsed .msmail-nav-link {
    justify-content: center;
    padding: 0;
}

.msmail-app-shell.sidebar-collapsed .msmail-sidebar-toggle i {
    transform: rotate(180deg);
}

@media (max-width: 900px) {
    .msmail-sidebar {
        width: var(--msmail-sidebar-width);
        transform: translateX(-102%);
    }

    .msmail-app-shell.sidebar-collapsed .msmail-sidebar {
        width: var(--msmail-sidebar-width);
    }

    .msmail-main,
    .msmail-app-shell.sidebar-collapsed .msmail-main {
        margin-left: 0;
    }

    .msmail-app-shell.mobile-sidebar-open .msmail-sidebar {
        transform: translateX(0);
    }

    .msmail-app-shell.sidebar-collapsed .msmail-brand-copy,
    .msmail-app-shell.sidebar-collapsed .msmail-user-card,
    .msmail-app-shell.sidebar-collapsed .msmail-nav-section,
    .msmail-app-shell.sidebar-collapsed .msmail-nav-label {
        display: grid;
    }

    .msmail-app-shell.sidebar-collapsed .msmail-brand {
        justify-content: flex-start;
    }

    .msmail-app-shell.sidebar-collapsed .msmail-nav-link {
        justify-content: flex-start;
        padding: 0 11px;
    }

    .msmail-sidebar-toggle {
        display: none;
    }

    .msmail-mobile-menu-button {
        display: inline-flex;
    }

    .msmail-system-status span,
    .msmail-topbar-compose span {
        display: none;
    }

    .msmail-topbar-compose {
        width: 40px;
        padding: 0;
    }
}

@media (max-width: 720px) {
    body {
        padding-bottom: var(--msmail-mobile-nav-height);
    }

    .msmail-topbar {
        min-height: 62px;
        padding: 0 13px;
    }

    .msmail-topbar-title p {
        max-width: 180px;
    }

    .msmail-system-status {
        display: none;
    }

    .msmail-content {
        padding: 15px;
    }

    .msmail-mobile-nav {
        position: fixed;
        inset: auto 0 0;
        z-index: var(--msmail-layout-z-mobile);
        display: grid;
        min-height: var(--msmail-mobile-nav-height);
        grid-template-columns: repeat(5, 1fr);
        align-items: end;
        padding: 7px 8px max(7px, env(safe-area-inset-bottom));
        border-top: 1px solid var(--line);
        background: color-mix(in srgb, var(--surface) 94%, transparent);
        backdrop-filter: blur(18px);
    }

    .msmail-mobile-nav > a {
        display: grid;
        min-height: 52px;
        place-items: center;
        align-content: center;
        gap: 4px;
        color: var(--muted);
        font-size: 8px;
        text-decoration: none;
    }

    .msmail-mobile-nav > a i {
        font-size: 16px;
    }

    .msmail-mobile-fab-wrap {
        display: grid;
        place-items: center;
    }

    .msmail-mobile-fab {
        display: grid;
        width: 56px;
        height: 56px;
        margin-top: -24px;
        place-items: center;
        border: 6px solid var(--bg);
        border-radius: 50%;
        background: var(--primary);
        color: #fff;
        cursor: pointer;
        box-shadow: 0 13px 30px color-mix(in srgb, var(--primary) 35%, transparent);
        transition: transform .18s ease;
    }

    .msmail-mobile-fab.open {
        transform: rotate(45deg);
    }
}

@media (max-width: 430px) {
    .msmail-topbar-title p {
        display: none;
    }

    .msmail-topbar-actions {
        gap: 7px;
    }
}


/* =========================================================
   AI Studio internal navigation
   ========================================================= */

.msmail-ai-tabs {
    display: flex;
    gap: 7px;
    margin-bottom: 18px;
    padding: 7px;
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: 15px;
    background: var(--surface);
    scrollbar-width: thin;
}

.msmail-ai-tab {
    display: inline-flex;
    min-height: 38px;
    flex: 0 0 auto;
    align-items: center;
    gap: 8px;
    padding: 0 12px;
    border-radius: 10px;
    color: var(--muted);
    font-size: 10px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
}

.msmail-ai-tab:hover,
.msmail-ai-tab.active {
    background: color-mix(in srgb, var(--primary) 13%, transparent);
    color: var(--text);
}

.msmail-ai-tab.active {
    box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--primary) 28%, transparent);
}

@media (max-width: 720px) {
    .msmail-ai-tabs {
        margin-inline: -2px;
        padding: 6px;
    }

    .msmail-ai-tab {
        min-height: 36px;
        padding-inline: 10px;
    }
}