:root
{
    color-scheme: dark;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system,
                 BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-synthesis: none;
}

*
{
    box-sizing: border-box;
}

html,
body
{
    width: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden;
}

button,
input
{
    font: inherit;
}

button
{
    border: 0;
}

fieldset
{
    min-width: 0;
    margin: 0;
    padding: 0;
    border: 0;
}

[hidden]
{
    display: none !important;
}

#Body
{
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    background:
        radial-gradient(circle at 62% 42%, #29303b 0, #11151b 45%,
                        #090b0f 100%);
}

#GLCanvas
{
    display: block;
    width: 100%;
    height: 100%;
    cursor: move;
}

#UploadPanel
{
    position: absolute;
    top: clamp(1rem, 3vw, 2.5rem);
    left: clamp(1rem, 3vw, 2.5rem);
    width: min(23rem, calc(100vw - 2rem));
    max-height: calc(100vh - 2rem);
    padding: 1.35rem;
    overflow-y: auto;
    color: #f6f7f9;
    border: 1px solid rgb(255 255 255 / 12%);
    border-radius: 1rem;
    background: rgb(12 15 20 / 88%);
    box-shadow: 0 1.5rem 4rem rgb(0 0 0 / 35%);
    backdrop-filter: blur(1rem);
}

.panel_header
{
    margin-bottom: 1.15rem;
}

.eyebrow
{
    margin: 0 0 0.4rem;
    color: #aeb9c8;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

h1
{
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(1.8rem, 4vw, 2.35rem);
    font-weight: 500;
    line-height: 1;
    letter-spacing: -0.035em;
}

.introduction
{
    margin: 0.75rem 0 0;
    color: #bdc5d0;
    font-size: 0.82rem;
    line-height: 1.5;
}

#CardUploadForm
{
    display: grid;
    gap: 0.8rem;
}

.source_toggle
{
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.2rem;
    padding: 0.2rem;
    border: 1px solid rgb(255 255 255 / 10%);
    border-radius: 0.65rem;
    background: rgb(255 255 255 / 4%);
}

.source_toggle legend
{
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
}

.source_toggle label
{
    position: relative;
    cursor: pointer;
}

.source_toggle input
{
    position: absolute;
    opacity: 0;
}

.source_toggle span
{
    display: block;
    padding: 0.55rem 0.7rem;
    color: #929dab;
    border-radius: 0.45rem;
    font-size: 0.72rem;
    font-weight: 700;
    text-align: center;
}

.source_toggle input:checked + span
{
    color: #10151b;
    background: #f4f7fa;
}

.source_toggle input:focus-visible + span
{
    outline: 2px solid #80bfff;
    outline-offset: 2px;
}

.source_toggle input:disabled + span
{
    cursor: wait;
    opacity: 0.45;
}

.source_fields
{
    display: grid;
    gap: 0.8rem;
}

.image_field
{
    display: grid;
    gap: 0.42rem;
    min-width: 0;
    padding: 0.75rem;
    border: 1px solid rgb(255 255 255 / 10%);
    border-radius: 0.7rem;
    background: rgb(255 255 255 / 4%);
}

.field_label
{
    font-size: 0.78rem;
    font-weight: 650;
}

.field_label span
{
    color: #7f8996;
    font-size: 0.68rem;
    font-weight: 500;
}

input[type="file"]
{
    width: 100%;
    color: #b7c0cc;
    font-size: 0.72rem;
}

input[type="url"]
{
    width: 100%;
    min-height: 2.35rem;
    padding: 0.55rem 0.65rem;
    color: #eef1f5;
    border: 1px solid rgb(255 255 255 / 12%);
    border-radius: 0.45rem;
    outline: 0;
    background: rgb(3 5 8 / 45%);
    font-size: 0.72rem;
}

input[type="url"]::placeholder
{
    color: #66717f;
}

input[type="url"]:focus
{
    border-color: #80bfff;
    box-shadow: 0 0 0 1px #80bfff;
}

input[type="file"]::file-selector-button
{
    margin-right: 0.6rem;
    padding: 0.42rem 0.62rem;
    color: #edf1f5;
    border: 1px solid rgb(255 255 255 / 14%);
    border-radius: 0.45rem;
    background: #29313c;
    cursor: pointer;
}

input[type="file"]:focus-visible
{
    outline: 2px solid #80bfff;
    outline-offset: 0.35rem;
}

.file_meta
{
    overflow: hidden;
    color: #8994a3;
    font-size: 0.68rem;
    line-height: 1.25;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.control_hint,
.cors_hint,
.session_note
{
    margin: 0;
    color: #8994a3;
    font-size: 0.68rem;
    line-height: 1.45;
}

.uniform_controls
{
    display: grid;
    gap: 0.65rem;
    padding: 0.75rem;
    border: 1px solid rgb(255 255 255 / 10%);
    border-radius: 0.7rem;
    background: rgb(255 255 255 / 4%);
}

.uniform_controls legend
{
    padding: 0 0.2rem;
    font-size: 0.78rem;
    font-weight: 650;
}

.uniform_controls[disabled]
{
    opacity: 0.45;
}

.uniform_controls[disabled] input
{
    cursor: not-allowed;
    opacity: 1;
}

.channel_slider
{
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.25rem 0.6rem;
    color: #bdc5d0;
    font-size: 0.7rem;
}

.channel_slider output
{
    min-width: 2.1rem;
    color: #eef1f5;
    font-variant-numeric: tabular-nums;
    text-align: right;
}

.channel_slider input
{
    grid-column: 1 / -1;
    width: 100%;
    accent-color: #80bfff;
}

.cors_hint
{
    margin: -0.2rem 0 0;
}

.form_actions
{
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.55rem;
}

.form_actions button
{
    min-height: 2.4rem;
    padding: 0.55rem 0.85rem;
    color: #10151b;
    border-radius: 0.55rem;
    background: #f4f7fa;
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
}

.form_actions .secondary_button
{
    color: #d6dce4;
    border: 1px solid rgb(255 255 255 / 12%);
    background: transparent;
}

.form_actions button:hover:not(:disabled)
{
    filter: brightness(0.9);
}

.form_actions button:focus-visible
{
    outline: 2px solid #80bfff;
    outline-offset: 2px;
}

.form_actions button:disabled,
input:disabled
{
    cursor: wait;
    opacity: 0.45;
}

.upload_status
{
    min-height: 1.1rem;
    margin: 0;
    color: #aeb7c3;
    font-size: 0.72rem;
    line-height: 1.35;
}

.upload_status[data-kind="success"]
{
    color: #83d5a4;
}

.upload_status[data-kind="error"]
{
    color: #ff9a9a;
}

.upload_status[data-kind="progress"]
{
    color: #8dc5ff;
}

.session_note
{
    margin-top: 1rem;
    padding-top: 0.9rem;
    border-top: 1px solid rgb(255 255 255 / 8%);
}

#DragHint
{
    position: absolute;
    right: clamp(1rem, 3vw, 2.5rem);
    bottom: clamp(1rem, 3vw, 2rem);
    margin: 0;
    padding: 0.55rem 0.75rem;
    color: #a7b0bd;
    border: 1px solid rgb(255 255 255 / 9%);
    border-radius: 999px;
    background: rgb(12 15 20 / 65%);
    font-size: 0.68rem;
    backdrop-filter: blur(0.6rem);
    pointer-events: none;
}

@media(max-width: 42rem)
{
    #UploadPanel
    {
        top: 0.75rem;
        left: 0.75rem;
        width: calc(100vw - 1.5rem);
        max-height: calc(100vh - 1.5rem);
        padding: 1rem;
    }

    .introduction,
    .session_note
    {
        display: none;
    }

    .panel_header
    {
        margin-bottom: 0.8rem;
    }

    #CardUploadForm
    {
        grid-template-columns: 1fr 1fr;
    }

    .control_hint,
    .uniform_controls,
    .source_toggle,
    .source_fields,
    .form_actions,
    .upload_status
    {
        grid-column: 1 / -1;
    }

    #DragHint
    {
        display: none;
    }
}

@media(max-width: 30rem)
{
    #CardUploadForm
    {
        grid-template-columns: 1fr;
    }

    .control_hint,
    .uniform_controls,
    .source_toggle,
    .source_fields,
    .form_actions,
    .upload_status
    {
        grid-column: auto;
    }
}