/* Shared phone and small-tablet layout hardening for the complete portal. */
html,
body {
    max-width: 100%;
    overflow-x: clip;
}

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

img,
video,
canvas {
    height: auto;
}

audio {
    max-width: 100%;
}

.table-wrap,
.record-table-wrap {
    max-width: 100%;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    -webkit-overflow-scrolling: touch;
}

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

input[type="file"] {
    width: 100%;
}

pre,
code,
.referral-link,
.message-preview,
.page-description,
.factor-description {
    overflow-wrap: anywhere;
    word-break: break-word;
}

@media (max-width: 900px) {
    body > nav,
    .site-nav,
    .portal-nav {
        min-height: 68px;
        padding: .7rem .85rem;
    }

    .unit-container,
    .payment-container,
    .auth-wrapper,
    .page,
    .container,
    .main {
        max-width: 100%;
        padding-right: .85rem;
        padding-left: .85rem;
    }

    .unit-header,
    .hero-content,
    .support-layout,
    .layout-wrapper {
        grid-template-columns: minmax(0, 1fr) !important;
    }

    .unit-header {
        gap: 1rem;
    }

    .lesson-sidebar {
        max-width: 100%;
        top: 0;
        display: flex;
        overflow-x: auto;
        overscroll-behavior-inline: contain;
        scrollbar-width: thin;
        -webkit-overflow-scrolling: touch;
    }

    .lesson-sidebar .tab-button,
    .tab-button {
        min-width: 150px;
        flex: 0 0 auto;
    }

    .comparison-table {
        min-width: 620px;
    }

    .content-card,
    .lesson-card,
    .panel,
    .settings-content,
    .payment-card,
    .auth-card {
        max-width: 100%;
    }

    .admin-brand {
        position: sticky;
        left: 0;
    }

    .sidebar-nav {
        overscroll-behavior-inline: contain;
        scrollbar-width: thin;
        -webkit-overflow-scrolling: touch;
    }

    .main {
        min-width: 0;
    }

    .table-wrap table,
    .record-table-wrap table {
        min-width: 680px;
    }

    .table-wrap audio {
        width: min(280px, 72vw);
        min-width: 210px;
    }

    .form-grid,
    .form-grid-4,
    .student-summary {
        min-width: 0;
    }
}

@media (max-width: 640px) {
    body > nav .logo,
    .site-nav .brand,
    .site-nav .logo,
    .portal-brand {
        min-width: 0;
        max-width: calc(100vw - 72px);
        white-space: normal;
        line-height: 1.15;
    }

    h1 {
        overflow-wrap: anywhere;
    }

    .hero,
    .unit-header,
    .page-header,
    .panel,
    .action-card,
    .factor-card,
    .message-card,
    .settings-content,
    .auth-card,
    .payment-card {
        padding: 1.1rem !important;
    }

    .payment-container,
    .auth-wrapper,
    .unit-container,
    .page,
    .container,
    .main {
        padding-right: .6rem;
        padding-left: .6rem;
    }

    .payment-container,
    .auth-wrapper {
        align-items: flex-start;
        padding-top: 1rem;
        padding-bottom: 2rem;
    }

    .price-tag {
        font-size: clamp(2rem, 12vw, 2.7rem) !important;
    }

    .qr-box,
    .upload-area,
    .instructions {
        width: 100%;
        padding: 1rem !important;
    }

    .qr-box img {
        width: min(220px, 72vw);
    }

    .section-actions,
    .recorder-controls,
    .button-row,
    .inline-form,
    .support-reply,
    .audio-review-header,
    .page-header,
    .help-card,
    .toggle-group {
        align-items: stretch;
        flex-direction: column;
    }

    .section-actions .button,
    .recorder-controls .button,
    .button-row .button,
    .inline-form .button,
    .support-reply .button,
    .payment-card .btn,
    .auth-card .btn {
        width: 100%;
    }

    .phrase-card,
    .part-b-phrase-card,
    .quiz-card,
    .accordion-content {
        padding: 1rem !important;
    }

    .notification-categories {
        grid-template-columns: 1fr !important;
    }

    .message-card,
    .message-top {
        align-items: flex-start;
        flex-direction: column;
    }

    .message-time {
        white-space: normal !important;
    }

    .settings-header,
    .header-left {
        min-width: 0;
    }

    .settings-menu {
        right: 0 !important;
        left: 0 !important;
        width: auto !important;
        max-width: none !important;
    }

    .record-table-wrap,
    .table-wrap {
        margin-right: -.25rem;
        margin-left: -.25rem;
        padding-bottom: .35rem;
    }

    .portal-footer,
    footer {
        overflow-wrap: anywhere;
    }

    .modal-overlay {
        padding: .5rem !important;
    }

    .modal-content {
        max-height: calc(100dvh - 1rem);
        overflow-y: auto;
    }
}

@media (max-width: 420px) {
    .hero h1,
    .unit-header h1,
    .page-header h1,
    .auth-card h1,
    .payment-card h1 {
        font-size: clamp(1.65rem, 9vw, 2.05rem) !important;
    }

    .factor-topline,
    .card-topline,
    .progress-meta {
        align-items: flex-start;
        flex-direction: column;
        gap: .45rem;
    }

    .filters,
    .audio-filter {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .filter-button,
    .audio-filter a {
        width: 100%;
        text-align: center;
    }
}