/* Mobile layout overrides. Kept separate so legacy page styles cannot
   accidentally override the presentation layer used for client demos. */

html {
    overflow-x: clip;
    -webkit-text-size-adjust: 100%;
}

body,
.page-area,
.page-area > * {
    min-width: 0;
}

img,
canvas,
video,
iframe {
    max-width: 100%;
}

.mobile-nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 0;
    flex: 0 0 44px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    color: var(--text-main);
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    cursor: pointer;
}

.mobile-nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    border-radius: 999px;
    background: currentColor;
    transition: transform .2s ease, opacity .2s ease;
}

.header.is-menu-open .mobile-nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header.is-menu-open .mobile-nav-toggle span:nth-child(2) { opacity: 0; }
.header.is-menu-open .mobile-nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.forecast-disclaimer {
    display: flex;
    align-items: flex-start;
    gap: .45rem;
    margin: .65rem 0 0;
    color: #d9a85f;
    font-size: .67rem;
    line-height: 1.55;
}

.forecast-disclaimer i { margin-top: .18rem; }
.forecast-disclaimer.is-model-ready { color: #58dcb9; }

@media (max-width: 900px) {
    .header {
        padding: .72rem max(.8rem, env(safe-area-inset-right)) .72rem max(.8rem, env(safe-area-inset-left));
    }

    .header-content,
    .home-page .header-content,
    .science-workbench-page .header-content {
        display: grid;
        grid-template-columns: minmax(0, 1fr) 44px;
        align-items: center;
        gap: .65rem;
        width: 100%;
    }

    .logo {
        min-width: 0;
    }

    .logo h1 {
        margin: 0;
        overflow: hidden;
        font-size: 1rem;
        line-height: 1.25;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .logo .subtitle {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .mobile-nav-toggle {
        display: flex;
    }

    .nav,
    .auth,
    .home-page .nav,
    .home-page .auth,
    .science-workbench-page .nav,
    .science-workbench-page .auth {
        display: none;
        grid-column: 1 / -1;
        width: 100%;
    }

    .header.is-menu-open .nav {
        display: block;
        order: initial;
        overflow: visible;
    }

    .header.is-menu-open .auth {
        display: flex;
    }

    .nav ul,
    .home-page .nav ul,
    .science-workbench-page .nav ul {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: .4rem;
        width: 100%;
        padding: .55rem 0 0;
    }

    .nav a,
    .nav-parent,
    .home-page .nav a,
    .science-workbench-page .nav a {
        display: flex;
        min-height: 44px;
        align-items: center;
        justify-content: center;
        padding: .6rem .7rem;
        text-align: center;
        border: 1px solid var(--border);
        border-radius: 10px;
    }

    .auth,
    .home-page .auth,
    .science-workbench-page .auth {
        flex-wrap: wrap;
        gap: .5rem;
        padding-top: .65rem;
        border-top: 1px solid var(--border);
    }

    .auth .global-data-status {
        margin-right: auto;
    }

    .auth .btn,
    .auth .lang-toggle,
    .auth .theme-toggle {
        min-height: 40px;
    }

    .header.is-menu-open .auth .btn-register,
    .header.is-menu-open .auth .theme-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .main-content,
    .home-page .main-content,
    .science-workbench-page .main-content {
        box-sizing: border-box;
        width: 100%;
        max-width: 100%;
        margin: 1rem auto 2rem;
        padding-right: max(.8rem, env(safe-area-inset-right));
        padding-left: max(.8rem, env(safe-area-inset-left));
    }

    .left-sidebar,
    .home-page .left-sidebar,
    .science-workbench-page .left-sidebar {
        display: none;
    }

    .page-area {
        width: 100%;
        max-width: 100%;
        margin-left: 0 !important;
    }

    table {
        display: block;
        max-width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    input,
    select,
    textarea,
    button {
        font-size: max(16px, 1em);
    }

    input,
    select,
    textarea {
        max-width: 100%;
    }

    .home-analysis-grid,
    .home-two-col,
    .science-grid-2,
    .science-grid-equal {
        grid-template-columns: minmax(0, 1fr);
    }
}

@media (max-width: 640px) {
    .header,
    .home-page .header,
    .science-workbench-page .header {
        padding-top: max(.62rem, env(safe-area-inset-top));
    }

    .logo .subtitle {
        display: none;
    }

    .nav ul,
    .home-page .nav ul,
    .science-workbench-page .nav ul {
        grid-template-columns: 1fr;
    }

    .auth .global-data-status,
    .auth .user-info {
        width: 100%;
    }

    .auth .btn {
        flex: 1 1 auto;
        text-align: center;
    }

    .home-page .main-content,
    .science-workbench-page .main-content,
    .main-content {
        margin-top: .7rem;
        padding-right: max(.65rem, env(safe-area-inset-right));
        padding-left: max(.65rem, env(safe-area-inset-left));
    }

    .home-observatory,
    .science-workbench {
        gap: .75rem;
    }

    .home-hero {
        border-radius: 18px;
    }

    .home-hero-copy {
        padding: 1.55rem 1.05rem;
    }

    .home-hero h1 {
        font-size: clamp(2rem, 11vw, 2.6rem);
        letter-spacing: -.055em;
    }

    .home-hero-lead {
        margin-top: 1rem;
        font-size: .84rem;
        line-height: 1.7;
    }

    .home-hero-actions {
        display: grid;
        grid-template-columns: 1fr;
        margin-top: 1.25rem;
    }

    .home-primary-action,
    .home-secondary-action {
        width: 100%;
        min-height: 48px;
    }

    .home-capabilities {
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: .55rem;
        margin-top: 1.3rem;
    }

    .home-command-card {
        min-height: 94px;
        grid-template-columns: 32px minmax(0, 1fr) auto;
        padding: 1rem;
    }

    .home-page .home-panel,
    .science-panel {
        padding: 1rem;
        border-radius: 17px;
    }

    .home-panel-heading,
    .science-panel-head,
    .forecast-header {
        flex-direction: column;
        align-items: flex-start;
        gap: .65rem;
    }

    .map-data-meta {
        width: 100%;
        min-width: 0;
    }

    .home-time-controller {
        display: grid;
        grid-template-columns: auto minmax(0, 1fr) auto;
        gap: .55rem;
    }

    .home-time-controller input {
        min-width: 0;
        width: 100%;
    }

    .home-time-controller .forecast-toggle-btn {
        grid-column: 1 / -1;
        width: 100%;
        min-height: 44px;
    }

    .ne-map-container,
    .home-map-panel .ne-map-container {
        display: flex;
        flex-direction: column;
        gap: .5rem;
    }

    .map-frame,
    .home-map-panel .map-frame,
    .map-legend,
    .home-map-panel .map-legend {
        box-sizing: border-box;
        width: 100%;
    }

    .forecast-chart-wrap,
    body.home-page .forecast-chart-wrap {
        height: 220px;
    }

    body.home-page .forecast-cards {
        grid-template-columns: 1fr;
    }

    body.home-page .telemetry-panel .dashboard-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: .45rem;
    }

    .telemetry-panel .metric-card {
        min-height: 94px;
    }

    .home-page .datasource-grid,
    .methods-grid,
    .model-facts,
    .science-stat-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .science-hero {
        padding: 1.35rem 1rem;
    }

    .science-hero h1 {
        font-size: clamp(1.9rem, 10vw, 2.35rem);
    }

    .science-hero-meta {
        grid-template-columns: minmax(0, 1fr);
    }

    .science-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .science-actions .science-button {
        width: 100%;
        min-height: 46px;
        justify-content: center;
    }

    .chart-stage,
    .chart-stage.tall,
    .map-stage,
    .map-stage canvas {
        min-height: 220px;
        height: 220px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .mobile-nav-toggle span {
        transition: none;
    }
}