.menu-toggle,
.primary-nav,
.nav-backdrop {
    display: none !important;
}

.app-header .primary-nav,
.topbar .primary-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    flex: 1 1 auto;
}

.app-header .nav-item,
.topbar .nav-item {
    position: relative;
}

.app-header .nav-link,
.app-header .nav-trigger,
.topbar .nav-link,
.topbar .nav-trigger {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 10px;
    border: 1px solid transparent;
    border-radius: 999px;
    color: var(--muted);
    background: rgba(148, 163, 184, 0.06);
    font-size: 0.9rem;
    font-weight: 800;
    white-space: nowrap;
    cursor: pointer;
    transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.app-header .nav-link:hover,
.app-header .nav-trigger:hover,
.app-header .nav-item.open > .nav-trigger,
.topbar .nav-link:hover,
.topbar .nav-trigger:hover,
.topbar .nav-item.open > .nav-trigger {
    color: var(--ink);
    background: rgba(15, 118, 110, 0.08);
    border-color: var(--line);
    box-shadow: 0 8px 20px rgba(23, 32, 42, 0.08);
}

.app-header .nav-trigger i,
.topbar .nav-trigger i {
    font-size: 0.72rem;
    transition: transform 0.18s ease;
}

.app-header .nav-item.open .nav-trigger i,
.app-header .nav-item:hover .nav-trigger i,
.topbar .nav-item.open .nav-trigger i,
.topbar .nav-item:hover .nav-trigger i {
    transform: rotate(180deg);
}

.app-header .dropdown-menu,
.topbar .dropdown-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    z-index: 30;
    width: min(720px, calc(100vw - 24px));
    min-width: 320px;
    padding: 14px;
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 20px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.96)),
        rgba(255, 255, 255, 0.98);
    box-shadow: 0 30px 72px rgba(15, 23, 42, 0.18);
    display: grid;
    gap: 10px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px) scale(0.985);
    transform-origin: top left;
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
    overflow: hidden;
}

.app-header .dropdown-menu::before,
.topbar .dropdown-menu::before {
    content: "";
    position: absolute;
    inset: 0 auto auto 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--teal), var(--blue));
}

html.theme-dark .app-header .dropdown-menu,
html.theme-dark .topbar .dropdown-menu {
    background:
        linear-gradient(180deg, rgba(17, 24, 39, 0.98), rgba(15, 23, 42, 0.96)),
        rgba(17, 24, 39, 0.98);
    border-color: rgba(148, 163, 184, 0.18);
}

.app-header .nav-item:hover .dropdown-menu,
.app-header .nav-item.open .dropdown-menu,
.topbar .nav-item:hover .dropdown-menu,
.topbar .nav-item.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.app-header .dropdown-menu__head,
.topbar .dropdown-menu__head {
    display: grid;
    gap: 4px;
    padding: 6px 8px 2px;
}

.app-header .dropdown-menu__head span,
.topbar .dropdown-menu__head span {
    width: fit-content;
    padding: 5px 10px;
    border-radius: 999px;
    color: var(--teal-dark);
    background: rgba(15, 118, 110, 0.1);
    font-size: 0.74rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.app-header .dropdown-menu__head p,
.topbar .dropdown-menu__head p {
    margin: 0;
    color: var(--muted);
    font-size: 0.84rem;
    line-height: 1.45;
}

.app-header .dropdown-menu__grid,
.topbar .dropdown-menu__grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.app-header .dropdown-menu a,
.topbar .dropdown-menu a {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 10px 14px;
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: 14px;
    color: var(--ink);
    background: rgba(255, 255, 255, 0.88);
    font-size: 0.9rem;
    font-weight: 700;
    box-shadow: 0 10px 20px rgba(15, 23, 42, 0.05);
    transition: color 0.18s ease, background 0.18s ease, transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.app-header .dropdown-menu a::after,
.topbar .dropdown-menu a::after {
    content: "\f105";
    color: var(--muted);
    font-family: "Font Awesome 6 Free";
    font-size: 0.72rem;
    font-weight: 900;
}

.app-header .dropdown-menu a:hover,
.topbar .dropdown-menu a:hover {
    color: var(--teal-dark);
    border-color: rgba(15, 118, 110, 0.24);
    background: linear-gradient(90deg, rgba(15, 118, 110, 0.12), rgba(49, 94, 251, 0.08));
    box-shadow: 0 12px 24px rgba(15, 118, 110, 0.12);
    transform: translateX(3px);
}

.app-header .dropdown-menu a[aria-current="page"],
.topbar .dropdown-menu a[aria-current="page"] {
    color: var(--teal-dark);
    border-color: rgba(15, 118, 110, 0.28);
    background: rgba(15, 118, 110, 0.1);
}

.app-header .dropdown-menu a::after,
.topbar .dropdown-menu a::after {
    color: rgba(100, 114, 135, 0.82);
    transition: transform 0.18s ease, color 0.18s ease;
}

.app-header .dropdown-menu a:hover::after,
.topbar .dropdown-menu a:hover::after {
    color: var(--teal-dark);
    transform: translateX(2px);
}

.app-header .menu-toggle,
.topbar .menu-toggle {
    min-height: 40px;
    width: 42px;
    display: none;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: 10px;
    color: var(--ink);
    background: var(--surface);
}

.app-header .menu-toggle span,
.topbar .menu-toggle span {
    position: absolute;
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: currentColor;
    transition: transform 0.18s ease, opacity 0.18s ease;
}

.app-header .menu-toggle span:nth-child(1),
.topbar .menu-toggle span:nth-child(1) {
    transform: translateY(-6px);
}

.app-header .menu-toggle span:nth-child(3),
.topbar .menu-toggle span:nth-child(3) {
    transform: translateY(6px);
}

.app-header .menu-toggle[aria-expanded="true"] span:nth-child(1),
.topbar .menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg);
}

.app-header .menu-toggle[aria-expanded="true"] span:nth-child(2),
.topbar .menu-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.app-header .menu-toggle[aria-expanded="true"] span:nth-child(3),
.topbar .menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg);
}

.nav-backdrop {
    position: fixed;
    inset: 0;
    z-index: 80;
    display: none;
    border: 0;
    padding: 0;
    background: rgba(9, 16, 28, 0.5);
    backdrop-filter: blur(2px);
}

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

body.nav-open {
    overflow: hidden;
}

body.tools-popup-open {
    overflow: hidden;
}

@media (max-width: 1360px) {
    .app-header .header-inner,
    .topbar .topbar-inner {
        flex-wrap: wrap;
    }

    .app-header .primary-nav,
    .topbar .primary-nav {
        flex: 1 1 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
        order: 3;
    }

.app-header .header-actions,
.topbar .header-actions {
    width: 100%;
    margin-left: 0;
    justify-content: flex-end;
    min-height: 40px;
    flex-wrap: wrap;
    order: 4;
}

    .app-header .header-search,
    .topbar .header-search {
        min-width: min(100%, 280px);
        flex: 1 1 280px;
    }

}

@media (max-width: 1160px) {
    .app-header .header-inner,
    .topbar .topbar-inner {
        flex-wrap: wrap;
        gap: 10px;
    }

    .app-header .menu-toggle,
    .topbar .menu-toggle {
        display: inline-flex;
        order: 3;
        margin-left: auto;
        position: relative;
        z-index: 96;
    }

    .app-header .header-actions,
    .topbar .header-actions {
        width: 100%;
        margin-left: 0;
        justify-content: flex-end;
        flex-wrap: wrap;
        gap: 12px;
        min-height: 86px;
        align-content: flex-start;
    }

    .app-header .header-search,
    .topbar .header-search {
        min-width: min(100%, 260px);
        flex: 1 1 260px;
    }

    .app-header .primary-nav,
    .topbar .primary-nav {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: min(84vw, 360px);
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 5px;
        padding: 72px 10px 10px;
        max-width: calc(100vw - 24px);
        max-height: 100vh;
        overflow-y: auto;
        overscroll-behavior: contain;
        box-sizing: border-box;
        z-index: 95;
        border: 1px solid var(--line);
        border-right: 0;
        border-radius: 0 0 0 20px;
        background: rgba(255, 255, 255, 0.98);
        box-shadow: -14px 0 42px rgba(23, 32, 42, 0.24);
        transform: translateX(100%);
        transition: transform 0.24s ease;
    }

    html.theme-dark .app-header .primary-nav,
    html.theme-dark .topbar .primary-nav {
        background: rgba(17, 24, 39, 0.98);
    }

    .app-header .primary-nav.open,
    .topbar .primary-nav.open {
        display: flex;
        transform: translateX(0);
    }

    .app-header .nav-link,
    .app-header .nav-trigger,
    .topbar .nav-link,
    .topbar .nav-trigger {
        width: 100%;
        justify-content: space-between;
    }

    .app-header .nav-item,
    .topbar .nav-item {
        padding: 2px 0;
        border-bottom: 1px solid var(--line);
    }

    .app-header .nav-item:last-child,
    .topbar .nav-item:last-child {
        border-bottom: 0;
    }

    .app-header .nav-trigger,
    .topbar .nav-trigger {
        min-height: 42px;
        border-color: var(--line);
        background: var(--surface-soft);
        border-radius: 10px;
        justify-content: space-between;
    }

    .app-header .dropdown-menu,
    .topbar .dropdown-menu {
        position: static;
        width: 100%;
        min-width: 0;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        display: none;
        margin: 8px 0 6px;
        padding: 8px;
        border: 1px solid var(--line);
        border-radius: 16px;
        background: transparent;
        box-shadow: none;
    }

    .app-header .nav-item.open .dropdown-menu,
    .topbar .nav-item.open .dropdown-menu {
        display: grid;
    }

    .app-header .dropdown-menu__grid,
    .topbar .dropdown-menu__grid {
        grid-template-columns: 1fr;
        gap: 5px;
    }

    .app-header .dropdown-menu__head,
    .topbar .dropdown-menu__head {
        padding: 6px 6px 4px;
    }

    .app-header .dropdown-menu a,
    .topbar .dropdown-menu a {
        min-height: 44px;
        border: 1px solid var(--line);
        border-radius: 12px;
        background: var(--surface);
        padding: 10px 12px;
        transform: none;
        box-shadow: none;
    }

    .app-header .dropdown-menu a:hover,
    .topbar .dropdown-menu a:hover {
        background: var(--surface-soft);
        transform: none;
    }

    .topbar .header-actions {
        order: 5;
    }
}

.header-quick-links {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
    flex: 1 1 auto;
    overflow-x: auto;
    scrollbar-width: none;
}

.header-quick-links::-webkit-scrollbar {
    display: none;
}

.header-quick-link {
    min-height: 34px;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 0 11px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--ink);
    background: var(--surface);
    font-size: 0.8rem;
    font-weight: 800;
    white-space: nowrap;
    transition: color 0.18s ease, background 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.header-quick-link--trigger {
    cursor: pointer;
}

.header-quick-link:hover {
    color: var(--teal-dark);
    border-color: var(--line-strong);
    background: var(--surface-soft);
    transform: translateY(-1px);
}

.header-quick-link i {
    color: var(--teal);
    font-size: 0.78rem;
}

.tools-popup {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: none;
    overflow: hidden;
}

.tools-popup.open {
    display: block;
}

.tools-popup__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(9, 16, 28, 0.52);
    backdrop-filter: blur(4px);
}

.tools-popup__panel {
    position: relative;
    width: min(1020px, calc(100vw - 24px));
    max-height: min(84vh, 900px);
    margin: 6vh auto 0;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 30px 80px rgba(15, 23, 42, 0.28);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

html.theme-dark .tools-popup__panel {
    background: rgba(17, 24, 39, 0.98);
}

.tools-popup__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
}

.tools-popup__eyebrow {
    margin: 0 0 6px;
    color: var(--teal);
    font-size: 0.75rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.tools-popup__header h2 {
    margin: 0;
    font-size: 1.5rem;
}

.tools-popup__close {
    width: 40px;
    height: 40px;
    border: 1px solid var(--line);
    border-radius: 10px;
    color: var(--ink);
    background: var(--surface);
}

.tools-popup__search {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 12px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--surface-soft);
}

.tools-popup__search input {
    width: 100%;
    height: 44px;
    border: 0;
    outline: none;
    color: var(--ink);
    background: transparent;
    font: inherit;
    font-weight: 700;
}

.tools-popup__search i {
    color: var(--teal);
}

.tools-popup__summary {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tools-popup__chip {
    min-height: 32px;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 0 10px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--ink);
    background: var(--surface-soft);
    font-size: 0.8rem;
    font-weight: 800;
}

.tools-popup__body {
    display: grid;
    gap: 12px;
    flex: 1 1 auto;
    min-height: 0;
    overflow: auto;
    padding-right: 2px;
}

.tools-popup__section {
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.72);
}

html.theme-dark .tools-popup__section {
    background: rgba(15, 23, 42, 0.72);
}

.tools-popup__section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
}

.tools-popup__section-head h3 {
    margin: 0;
    font-size: 1rem;
}

.tools-popup__section-head span {
    min-width: 32px;
    padding: 4px 8px;
    border-radius: 999px;
    color: var(--teal-dark);
    background: rgba(15, 118, 110, 0.12);
    font-size: 0.76rem;
    font-weight: 900;
    text-align: center;
}

.tools-popup__links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tools-popup__links a {
    min-height: 34px;
    display: inline-flex;
    align-items: center;
    padding: 0 11px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--surface);
    color: var(--ink);
    font-size: 0.84rem;
    font-weight: 800;
}

.tools-popup__links a:hover {
    color: var(--teal-dark);
    border-color: var(--line-strong);
    background: var(--surface-soft);
}

.tools-popup__footer {
    display: flex;
    justify-content: flex-end;
}

.tools-popup__footer a {
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    padding: 0 14px;
    border-radius: 10px;
    color: #ffffff;
    background: var(--teal);
    font-size: 0.86rem;
    font-weight: 900;
}

@media (max-width: 760px) {
    .tools-popup__panel {
        width: calc(100vw - 16px);
        max-height: calc(100vh - 16px);
        margin: 8px auto 0;
        padding: 14px;
        border-radius: 18px;
        gap: 12px;
    }

    .tools-popup__links a {
        width: 100%;
        justify-content: center;
    }

    .tools-popup__footer {
        justify-content: stretch;
    }

    .tools-popup__footer a {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .app-header,
    .topbar {
        position: sticky;
        top: 0;
        z-index: 90;
        transition: transform 0.24s ease, box-shadow 0.24s ease;
        will-change: transform;
    }

    .app-header.mobile-header-hidden,
    .topbar.mobile-header-hidden {
        transform: translateY(calc(-100% - 2px));
        box-shadow: none;
    }

    .app-header .header-inner,
    .topbar .topbar-inner {
        min-height: auto;
        padding: 12px 14px;
    }

    .app-header .brand-logo,
    .topbar .brand-logo {
        width: clamp(136px, 46vw, 200px);
        max-height: 40px;
    }

    .app-header .brand-logo,
    .topbar .brand-logo,
    .site-footer__logo img {
        aspect-ratio: 360 / 88;
    }

    .app-header .primary-nav,
    .topbar .primary-nav {
        width: min(82vw, 340px);
        padding-top: 68px;
    }

    .app-header .header-actions,
    .topbar .header-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .header-quick-links {
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        justify-content: flex-start;
        gap: 8px;
        overflow: visible;
        padding-bottom: 0;
    }

    .header-quick-link {
        width: auto;
        flex: 0 1 auto;
        min-width: 0;
        justify-content: flex-start;
        align-items: center;
        white-space: normal;
        text-align: left;
        min-height: 42px;
        padding: 10px 12px;
    }

    .app-header .header-search,
    .topbar .header-search {
        width: 100%;
        min-width: 0;
        flex: 0 0 auto;
    }

    .app-header .theme-toggle,
    .topbar .theme-toggle {
        width: 100%;
    }

    .header-quick-link span {
        display: inline;
        white-space: normal;
        line-height: 1.15;
    }

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

@media (max-width: 420px) {
    .header-quick-links {
        gap: 6px;
    }

    .header-quick-link {
        width: 100%;
    }
}

/* Keep tool input and output workspaces comfortably sized site-wide. */
main textarea,
main .output-box,
main [class*="output-area"],
main [class*="output-box"] {
    min-height: 320px !important;
    padding: 18px 20px;
    font-size: 1.05rem;
    line-height: 1.65;
}

main input[type="text"],
main input[type="date"],
main input[type="datetime-local"],
main input[type="email"],
main input[type="number"],
main input[type="password"],
main input[type="tel"],
main input[type="time"],
main input[type="url"] {
    min-height: 64px !important;
    padding: 16px 18px;
    font-size: 1.05rem;
}

@media (max-width: 640px) {
    main textarea,
    main .output-box,
    main [class*="output-area"],
    main [class*="output-box"] {
        min-height: 260px !important;
    }
}