:root {
    color-scheme: light dark;
    font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --accent: #176a7a;
    --accent-hover: #125766;
    --banner-bg: #eef3f5;
    --banner-border: #d7e1e5;
    --banner-shadow: rgba(17, 32, 38, 0.14);
    --danger-bg: #fff1f2;
    --danger-border: #fecdd3;
    --danger-text: #b91c1c;
    --file-bg: #f7fafb;
    --input-bg: #ffffff;
    --input-border: #becbd1;
    --mast-border: #e3eaed;
    --muted-text: #5f7078;
    --page-bg: #eef3f5;
    --panel-bg: #ffffff;
    --panel-border: #d8e1e5;
    --panel-shadow: rgba(17, 32, 38, 0.10);
    --success-bg: #eef8f1;
    --success-border: #bdddc5;
    --text: #172126;
    --text-secondary: #33444c;
    --text-on-accent: #ffffff;
    background: var(--page-bg);
    color: var(--text);
}

@media (prefers-color-scheme: dark) {
    :root {
        --accent: #3ba6b6;
        --accent-hover: #55bac8;
        --banner-bg: #10191d;
        --banner-border: #30444d;
        --banner-shadow: rgba(0, 0, 0, 0.36);
        --danger-bg: #3a1d21;
        --danger-border: #8f3947;
        --danger-text: #ffb4c0;
        --file-bg: #1c2a30;
        --input-bg: #10191d;
        --input-border: #40545d;
        --mast-border: #2b3b43;
        --muted-text: #a9bbc3;
        --page-bg: #0f171b;
        --panel-bg: #172126;
        --panel-border: #2c3d45;
        --panel-shadow: rgba(0, 0, 0, 0.38);
        --success-bg: #143020;
        --success-border: #3f6d4c;
        --text: #edf5f8;
        --text-secondary: #c8d6dc;
        --text-on-accent: #06252b;
    }
}

* {
    box-sizing: border-box;
}

html {
    width: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    min-width: 0;
    overflow-x: hidden;
}

.shell {
    min-height: 100vh;
    align-items: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 24px;
    width: 100%;
}

.company-logo {
    display: block;
    flex: 0 0 auto;
    height: auto;
    margin: 0 0 18px;
    max-height: 56px;
    max-width: min(320px, 82vw);
    object-fit: contain;
    width: auto;
}

.panel {
    width: min(760px, 100%);
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    min-width: 0;
    padding: 28px;
    box-shadow: 0 18px 50px var(--panel-shadow);
}

.mast {
    border-bottom: 1px solid var(--mast-border);
    margin-bottom: 22px;
    padding-bottom: 18px;
}

.banner-frame {
    aspect-ratio: 15 / 4;
    background: var(--banner-bg);
    border: 1px solid var(--banner-border);
    border-radius: 10px;
    box-shadow: 0 14px 34px var(--banner-shadow);
    margin: 0 0 18px;
    overflow: hidden;
    width: 100%;
}

.banner {
    display: block;
    height: 100%;
    object-fit: cover;
    width: 100%;
}

.eyebrow {
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0;
    margin: 0 0 8px;
    text-transform: uppercase;
}

h1,
h2 {
    line-height: 1.15;
    margin: 0;
}

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.35rem;
}

.muted,
.hint {
    color: var(--muted-text);
    font-weight: 400;
}

.instructions {
    color: var(--text-secondary);
    white-space: pre-wrap;
}

.stack {
    display: grid;
    gap: 16px;
    min-width: 0;
}

.grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    min-width: 0;
}

label {
    display: grid;
    gap: 7px;
    font-weight: 650;
    min-width: 0;
}

.field {
    display: grid;
    gap: 7px;
    min-width: 0;
}

.field > label {
    display: block;
    font-weight: 650;
}

input,
select,
textarea {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    color: var(--text);
    font: inherit;
    max-width: 100%;
    min-width: 0;
    padding: 11px 12px;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

input[type="file"] {
    line-height: 1.35;
    white-space: normal;
}

input[type="file"]::file-selector-button {
    background: var(--accent);
    border: 0;
    border-radius: 5px;
    color: var(--text-on-accent);
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    margin: 0 10px 4px 0;
    max-width: 100%;
    padding: 8px 12px;
}

input[type="file"]::file-selector-button:hover {
    background: var(--accent-hover);
}

textarea {
    resize: vertical;
}

button {
    align-items: center;
    background: var(--accent);
    border: 0;
    border-radius: 6px;
    color: var(--text-on-accent);
    cursor: pointer;
    display: inline-flex;
    font: inherit;
    font-weight: 700;
    justify-content: center;
    max-width: 100%;
    min-height: 44px;
    padding: 0 18px;
}

button:disabled {
    cursor: wait;
    opacity: 0.65;
}

button:hover:not(:disabled) {
    background: var(--accent-hover);
}

.danger-link {
    align-self: end;
    background: transparent;
    color: var(--danger-text);
    font-size: 0.86rem;
    min-height: 0;
    padding: 2px 0;
}

.danger-link:disabled {
    cursor: wait;
}

.danger-link:hover:not(:disabled) {
    background: var(--danger-bg);
}

.message {
    color: var(--danger-text);
    font-weight: 650;
    min-height: 1.3em;
    text-align: center;
}

.success {
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    border-radius: 8px;
    padding: 18px;
}

.selected-files {
    display: grid;
    gap: 8px;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.selected-file {
    align-items: center;
    background: var(--file-bg);
    border: 1px solid var(--panel-border);
    border-radius: 6px;
    display: grid;
    gap: 8px;
    grid-template-columns: minmax(0, 1fr) auto;
    min-width: 0;
    padding: 8px 10px;
}

.selected-file-name {
    color: var(--text);
    font-size: 0.92rem;
    font-weight: 600;
    min-width: 0;
    overflow-wrap: anywhere;
}

.selected-file-remove {
    background: transparent;
    border: 1px solid transparent;
    color: var(--danger-text);
    font-size: 0.86rem;
    min-height: 32px;
    padding: 0 8px;
}

.selected-file-remove:hover:not(:disabled) {
    background: var(--danger-bg);
    border-color: var(--danger-border);
}

.hidden {
    display: none;
}

@media (max-width: 640px) {
    .shell {
        align-items: stretch;
        padding: 12px;
    }

    .company-logo {
        align-self: center;
        margin-top: 8px;
        max-height: 44px;
        max-width: min(260px, 80vw);
    }

    .panel {
        padding: 20px;
        width: 100%;
    }

    .grid {
        grid-template-columns: 1fr;
    }

    button,
    input,
    select,
    textarea {
        min-width: 0;
    }

    input[type="file"] {
        padding: 10px;
    }

    input[type="file"]::file-selector-button {
        display: block;
        margin: 0 0 8px;
        width: 100%;
    }
}