/* Shared navigation: agent pills + auth (used across public pages) */

nav .nav-link,
nav .nav-link:visited {
    text-decoration: none;
    font-family: 'DM Sans', sans-serif;
}

/* Ensure brand tokens on pages with incomplete :root (e.g. checkout success)
   Palette: public/css/keplerworks-tokens.css */
nav.keplerworks-nav {
    position: relative;
}

/* Keep brand legible on dark desktop headers */
html[data-theme="dark"] body.keplerworks-deep-space nav.keplerworks-nav .logo {
    color: #ffffff !important;
}

.nav-agents {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.nav-agent {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.35rem 0.55rem;
    border-radius: 6px;
    text-decoration: none;
    white-space: nowrap;
    line-height: 1.2;
    border: 1px solid var(--mist, #e4e2dd);
    background: rgba(255, 255, 255, 0.95);
    color: var(--ink, #000000);
    box-sizing: border-box;
}

.nav-link,
.nav-cta,
button.nav-logout,
.nav-agent,
button.nav-upgrade-btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1.2;
}

.nav-link {
    line-height: 1;
}

/* Desktop auth optical alignment */
@media (min-width: 901px) {
    nav.keplerworks-nav #navSignIn {
        position: relative;
        top: 2px;
        line-height: 1;
    }

    nav.keplerworks-nav #navRegister {
        position: relative;
        top: 0;
        line-height: 1;
    }
}

a.nav-agent:not(.is-active):hover {
    background: var(--mist, #e4e2dd);
}

/* Carbon tool — current product surface (app page) */
a.nav-agent.nav-agent-carbon.is-active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--accent-fg);
}

/* Hover: border emphasis only — theme.css sets light/dark border colours */
a.nav-agent.nav-agent-carbon.is-active:hover {
    background: var(--accent);
    border-color: var(--accent-border);
    color: var(--accent-fg);
    box-shadow: none;
}

/* Coming-soon agents */
.nav-agent.nav-agent-soon {
    color: var(--concrete, #1e1e1e);
    background: #eceff1;
    border-color: var(--mist, #e4e2dd);
    cursor: not-allowed;
    opacity: 0.8;
    user-select: none;
}

.nav-user {
    font-size: 0.82rem;
    color: var(--slate, #1e1e1e);
    padding: 0.3rem 0.75rem;
    border: 1px solid var(--mist, #e4e2dd);
    border-radius: 100px;
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Account menu: user chip opens Manage Account + Sign out (desktop hover / touch toggle). */
.nav-account-wrap {
    position: relative;
    display: inline-flex;
    align-items: center;
    vertical-align: middle;
    z-index: 320;
}

button.nav-user {
    appearance: none;
    -webkit-appearance: none;
    margin: 0;
    font: inherit;
    line-height: inherit;
    text-align: left;
    cursor: pointer;
    background: #fff;
}

.nav-user-dropdown {
    display: none;
    position: absolute;
    /* Overlap chip slightly + top padding so pointer stays inside wrap (no hover dead zone). */
    top: calc(100% - 2px);
    right: 0;
    min-width: 12.5rem;
    padding: 10px 0 0.35rem;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--mist, #e4e2dd);
    border-radius: 12px;
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.14);
    z-index: 360;
}

html[data-theme="dark"] body.diagram-phase2 .nav-user-dropdown {
    background: rgba(12, 14, 24, 0.96);
    border: 1px solid rgba(226, 232, 240, 0.18);
    box-shadow: 0 22px 46px rgba(3, 5, 12, 0.56);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

@media (hover: hover) {
    .nav-account-wrap:hover .nav-user-dropdown,
    .nav-account-wrap:focus-within .nav-user-dropdown {
        display: block;
    }
}

.nav-account-wrap.is-open .nav-user-dropdown {
    display: block;
}

.nav-dropdown-link {
    display: block;
    padding: 0.5rem 1rem;
    font-family: 'DM Sans', sans-serif;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--ink, #000000);
    text-decoration: none;
}

html[data-theme="dark"] body.diagram-phase2 .nav-dropdown-link {
    color: rgba(242, 244, 248, 0.92);
}

.nav-dropdown-link:hover {
    background: transparent;
    color: var(--accent);
}

html[data-theme="dark"] body.diagram-phase2 .nav-dropdown-link:hover {
    background: transparent !important;
    color: var(--accent) !important;
}

html[data-theme="dark"] body.diagram-phase2 .nav-dropdown-link:focus-visible {
    background: transparent !important;
    color: var(--accent) !important;
    outline: 2px solid var(--accent-light);
    outline-offset: 2px;
}

.nav-user-dropdown .nav-logout {
    width: 100%;
    justify-content: flex-start;
    text-align: left;
    min-height: auto;
    padding: 0.5rem 1rem;
    margin: 0.2rem 0 0;
    border-radius: 0;
    border: none;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--ink, #000000);
    background: transparent;
    cursor: pointer;
}

html[data-theme="dark"] body.diagram-phase2 .nav-user-dropdown .nav-logout {
    border-top-color: rgba(226, 232, 240, 0.12);
    color: rgba(242, 244, 248, 0.92);
}

.nav-user-dropdown .nav-logout:hover {
    background: transparent;
    color: var(--accent);
}

html[data-theme="dark"] body.diagram-phase2 .nav-user-dropdown .nav-logout:hover {
    background: transparent !important;
    color: var(--accent) !important;
}

html[data-theme="dark"] body.diagram-phase2 .nav-user-dropdown .nav-logout:focus-visible {
    background: transparent !important;
    color: var(--accent) !important;
    outline: 2px solid var(--accent-light);
    outline-offset: -2px;
}

button.nav-logout {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.82rem;
    font-weight: 500;
    padding: 0.4rem 0.9rem;
    border: 1px solid var(--mist, #e4e2dd);
    border-radius: 6px;
    background: #fff;
    color: var(--concrete, #1e1e1e);
    cursor: pointer;
}

button.nav-logout:hover {
    background: var(--mist, #e4e2dd);
}

/* Light mode account dropdown — all pages (phase1 marketing + phase2 product).
   diagram-phase1/2 set dark glass on .nav-user-dropdown; keep chip styles separate above. */
html[data-theme="light"] .nav-user-dropdown {
    background: rgba(255, 255, 255, 0.98) !important;
    border: 1px solid var(--mist, #e4e2dd) !important;
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.14) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

html[data-theme="light"] .nav-user-dropdown .nav-dropdown-link {
    color: var(--ink, #000000) !important;
}

html[data-theme="light"] .nav-user-dropdown .nav-dropdown-link:hover,
html[data-theme="light"] .nav-user-dropdown .nav-dropdown-link:focus-visible {
    color: var(--accent) !important;
    background: transparent !important;
}

html[data-theme="light"] .nav-user-dropdown .nav-logout {
    color: var(--ink, #000000) !important;
    border-top-color: rgba(0, 0, 0, 0.06) !important;
    background: transparent !important;
}

html[data-theme="light"] .nav-user-dropdown .nav-logout:hover,
html[data-theme="light"] .nav-user-dropdown .nav-logout:focus-visible {
    color: var(--accent) !important;
    background: transparent !important;
}

.nav-cta {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.88rem;
    font-weight: 600;
    padding: 0.45rem 1rem;
    border-radius: 6px;
    background: var(--accent);
    color: var(--accent-fg);
    text-decoration: none;
    transition: background 0.15s;
    border: none;
    cursor: pointer;
    line-height: 1;
}

.nav-cta:hover {
    background: var(--accent-light);
}

.nav-menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--mist, #e4e2dd);
    border-radius: 8px;
    background: #fff;
    color: var(--ink, #000000);
    cursor: pointer;
    margin-left: 0.5rem;
}

.nav-menu-toggle .nav-menu-icon,
.nav-menu-toggle .nav-menu-icon::before,
.nav-menu-toggle .nav-menu-icon::after {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    transition: transform 0.2s ease;
}

.nav-menu-toggle .nav-menu-icon { position: relative; }
.nav-menu-toggle .nav-menu-icon::before,
.nav-menu-toggle .nav-menu-icon::after {
    content: '';
    position: absolute;
    left: 0;
}
.nav-menu-toggle .nav-menu-icon::before { top: -6px; }
.nav-menu-toggle .nav-menu-icon::after { top: 6px; }

nav.keplerworks-nav.is-mobile-nav-open .nav-menu-toggle .nav-menu-icon {
    background: transparent;
}
nav.keplerworks-nav.is-mobile-nav-open .nav-menu-toggle .nav-menu-icon::before {
    top: 0;
    transform: rotate(45deg);
}
nav.keplerworks-nav.is-mobile-nav-open .nav-menu-toggle .nav-menu-icon::after {
    top: 0;
    transform: rotate(-45deg);
}

@media (max-width: 900px) {
    nav.keplerworks-nav.is-mobile-nav-open {
        z-index: 200;
    }

    .nav-menu-toggle {
        display: inline-flex;
        flex-shrink: 0;
        background: var(--nav-mobile-toggle-bg, rgba(255, 255, 255, 0.95));
        border: 1px solid var(--nav-mobile-toggle-border, #e4e2dd);
        color: var(--nav-mobile-toggle-fg, #000000);
    }

    nav.keplerworks-nav.is-mobile-nav-open .nav-menu-toggle {
        background: var(--nav-mobile-toggle-bg, rgba(255, 255, 255, 0.95));
        border-color: var(--nav-mobile-toggle-border, #e4e2dd);
        color: var(--nav-mobile-toggle-fg, #000000);
    }

    nav.keplerworks-nav .nav-links {
        position: absolute;
        top: calc(100% + 8px);
        left: 0.75rem;
        right: 0.75rem;
        z-index: 120;
        display: none !important;
        flex-direction: column;
        align-items: stretch !important;
        gap: 0.35rem !important;
        padding: 0.8rem;
        max-height: calc(100vh - 92px);
        overflow-y: auto;
        overflow-x: hidden;
        background: var(--nav-mobile-panel-bg, rgba(255, 255, 255, 0.98));
        border: 1px solid var(--nav-mobile-panel-border, #e4e2dd);
        border-radius: 12px;
        box-shadow: var(--nav-mobile-panel-shadow, 0 22px 46px rgba(10, 15, 26, 0.12));
        backdrop-filter: blur(8px);
        -webkit-backdrop-filter: blur(8px);
    }

    nav.keplerworks-nav.is-mobile-nav-open .nav-links {
        display: flex !important;
    }

    nav.keplerworks-nav .nav-link {
        color: var(--nav-mobile-link-fg, #1e1e1e) !important;
    }

    nav.keplerworks-nav .nav-link:hover,
    nav.keplerworks-nav .nav-link.active {
        color: var(--accent) !important;
        background: transparent !important;
    }

    nav.keplerworks-nav .nav-link,
    nav.keplerworks-nav .nav-cta,
    nav.keplerworks-nav .nav-user,
    nav.keplerworks-nav .nav-logout,
    nav.keplerworks-nav .nav-theme-toggle {
        width: 100%;
        justify-content: flex-start;
    }

    nav.keplerworks-nav .nav-theme-toggle {
        min-height: 44px;
        padding: 0.5rem 0.75rem;
        margin: 0;
        color: var(--nav-mobile-link-fg, #1e1e1e) !important;
        background: transparent !important;
        border: none !important;
    }

    nav.keplerworks-nav .nav-theme-toggle:hover {
        color: var(--accent) !important;
        background: transparent !important;
    }

    nav.keplerworks-nav .nav-account-wrap {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    nav.keplerworks-nav .nav-user-dropdown {
        position: static;
        margin-top: 0.35rem;
        width: 100%;
        min-width: 0;
        background: var(--nav-mobile-dropdown-bg, rgba(255, 255, 255, 0.98)) !important;
        border: 1px solid var(--nav-mobile-dropdown-border, #e4e2dd) !important;
        box-shadow: var(--nav-mobile-dropdown-shadow, 0 10px 28px rgba(10, 15, 26, 0.1)) !important;
    }

    nav.keplerworks-nav .nav-user,
    nav.keplerworks-nav .nav-logout,
    nav.keplerworks-nav button.nav-logout {
        color: var(--nav-mobile-chip-fg, #1e1e1e) !important;
        border-color: var(--nav-mobile-chip-border, #e4e2dd) !important;
        background: var(--nav-mobile-chip-bg, #e4e2dd) !important;
    }

    nav.keplerworks-nav .nav-user-dropdown .nav-logout,
    nav.keplerworks-nav .nav-user-dropdown .nav-logout:hover {
        background: transparent !important;
        border-color: transparent !important;
        color: var(--nav-mobile-link-fg, #1e1e1e) !important;
    }

    nav.keplerworks-nav .nav-user-dropdown .nav-logout:hover {
        color: var(--accent) !important;
    }

    nav.keplerworks-nav.is-mobile-nav-open .nav-dropdown-link {
        color: var(--nav-mobile-link-fg, #1e1e1e) !important;
    }

    nav.keplerworks-nav.is-mobile-nav-open .nav-dropdown-link:hover,
    nav.keplerworks-nav.is-mobile-nav-open .nav-dropdown-link:focus-visible {
        color: var(--accent) !important;
        background: transparent !important;
    }

    nav.keplerworks-nav .nav-agent {
        color: var(--nav-mobile-chip-fg, #1e1e1e) !important;
        background: var(--nav-mobile-chip-bg, #e4e2dd) !important;
        border-color: var(--nav-mobile-chip-border, #e4e2dd) !important;
    }

    nav.keplerworks-nav .nav-agent.nav-agent-soon {
        opacity: 0.85;
    }

    nav.keplerworks-nav a.nav-agent.nav-agent-carbon.is-active {
        background: var(--accent) !important;
        color: var(--accent-fg) !important;
        border-color: var(--accent) !important;
    }

    nav.keplerworks-nav .nav-cta {
        background: var(--accent) !important;
        color: var(--accent-fg) !important;
        border: none !important;
    }

    nav.keplerworks-nav .nav-agents {
        width: 100%;
        display: grid;
        grid-template-columns: 1fr;
        gap: 0.35rem;
        margin: 0.2rem 0;
    }

    nav.keplerworks-nav .nav-agent {
        width: 100%;
        justify-content: flex-start;
        white-space: normal;
        word-break: break-word;
    }
}