:root {
    color-scheme: dark;
    --bg: #1a1a1a;
    --bg-2: #0d0d0d;
    --surface: #2a2a2a;
    --surface-strong: #333333;
    --text: #e0e0e0;
    --muted: #888888;
    --border: #444444;
    --accent: #ffb000;
    --accent-2: #00d4ff;
    --accent-soft: #ffb000;
    --error: #ff4444;
    --error-soft: #442222;
    --shadow: 4px 4px 0px rgba(0, 0, 0, 0.5);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    background: var(--bg);
    min-height: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    font-family: "Courier New", Consolas, monospace;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 0, 0, 0.15),
        rgba(0, 0, 0, 0.15) 1px,
        transparent 1px,
        transparent 2px
    );
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select {
    font: inherit;
    font-family: "Courier New", Consolas, monospace;
}

button,
input[type="file"],
select {
    border-radius: 0;
}

.site-shell {
    min-height: 100vh;
    display: grid;
    grid-template-rows: auto 1fr auto;
}

.site-header,
.site-main,
.site-footer {
    width: min(1160px, calc(100vw - 2rem));
    margin: 0 auto;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.25rem 0 0.75rem;
    border-bottom: 2px solid var(--border);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.9rem;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 2.75rem;
    height: 2.75rem;
    border: 2px solid var(--accent);
    background: var(--bg);
    color: var(--accent);
    font-weight: 800;
    letter-spacing: 0.04em;
    text-shadow: 2px 2px 0px rgba(255, 176, 0, 0.3);
}

.brand-copy {
    display: grid;
    gap: 0.1rem;
}

.brand-copy strong {
    font-size: 1rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
}

.brand-copy small {
    color: var(--muted);
}

.header-chip {
    padding: 0.5rem 0.75rem;
    border: 2px solid var(--border);
    background: var(--surface);
    color: var(--muted);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.site-main {
    padding: 2rem 0;
}

.site-footer {
    padding: 1rem 0;
    color: var(--muted);
    font-size: 0.9rem;
    border-top: 2px solid var(--border);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(340px, 0.9fr);
    gap: 2rem;
    align-items: start;
}

.hero-card,
.converter-card,
.support-card {
    border: 2px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow);
}

.converter-card {
    overflow: hidden;
}

.hero-card {
    padding: 2rem;
}

.hero-copy h1 {
    margin: 0;
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    line-height: 1.2;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    max-width: 20ch;
    color: var(--accent);
}

.eyebrow {
    margin: 0 0 0.9rem;
    color: var(--accent-2);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    font-weight: 700;
}

.lede {
    margin: 1.2rem 0 0;
    max-width: 60ch;
    color: var(--muted);
    font-size: 1rem;
    line-height: 1.6;
}

.hero-points {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 1.8rem;
}

.hero-points div {
    padding: 1rem;
    border: 2px solid var(--border);
    background: var(--bg);
}

.hero-points span {
    display: inline-grid;
    place-items: center;
    width: 2rem;
    height: 2rem;
    border: 2px solid var(--accent);
    margin-bottom: 0.75rem;
    background: var(--surface);
    color: var(--accent);
    font-weight: 800;
}

.hero-points strong {
    display: block;
    margin-bottom: 0.4rem;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text);
}

.hero-points p,
.support-card li,
.card-note,
.field-hint {
    margin: 0;
    color: var(--muted);
    line-height: 1.5;
    font-size: 0.9rem;
}

.converter-card {
    padding: 1.5rem;
    border: 2px solid var(--accent);
}

.card-head {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--border);
    padding-bottom: 1rem;
}

.card-head h3,
.support-card h3 {
    margin: 0;
    font-size: 1.1rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent);
}

.card-note {
    max-width: 20ch;
    text-align: right;
    font-size: 0.8rem;
}

.status-banner {
    padding: 0.75rem 1rem;
    margin: 1rem 0;
    border: 2px solid var(--error);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-banner.error {
    background: var(--error-soft);
    color: var(--error);
}

.converter-form {
    display: grid;
    gap: 1.25rem;
}

.field {
    display: grid;
    gap: 0.5rem;
}

.field label {
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent-2);
    font-size: 0.85rem;
}

.field input[type="file"],
.field select {
    width: 100%;
    max-width: 100%;
    border: 2px solid var(--border);
    background: var(--bg);
    color: var(--text);
    padding: 0.75rem 1rem;
    cursor: pointer;
}

.field input[type="file"]::file-selector-button {
    margin-right: 1rem;
    border: 2px solid var(--accent);
    padding: 0.5rem 0.75rem;
    background: var(--surface);
    color: var(--accent);
    font-weight: 700;
    cursor: pointer;
    text-transform: uppercase;
    font-size: 0.8rem;
}

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

.field input[type="file"]:focus-visible,
.field select:focus-visible,
.submit-button:focus-visible,
.brand:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.submit-button {
    border: 2px solid var(--accent);
    padding: 0.75rem 1rem;
    background: var(--surface);
    color: var(--accent);
    font-weight: 700;
    letter-spacing: 0.1em;
    cursor: pointer;
    text-transform: uppercase;
    box-shadow: var(--shadow);
    transition: all 0.1s ease;
}

.submit-button:hover {
    background: var(--accent);
    color: var(--bg);
    box-shadow: 2px 2px 0px rgba(0, 0, 0, 0.5);
    transform: translate(2px, 2px);
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.support-card {
    padding: 1.25rem;
}

.support-card h3 {
    margin-bottom: 1rem;
}

.support-card ul {
    margin: 1rem 0 0;
    padding-left: 1.25rem;
    display: grid;
    gap: 0.5rem;
}

.support-card li {
    color: var(--muted);
}

.format-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.format-badges span {
    padding: 0.4rem 0.6rem;
    border: 2px solid var(--border);
    background: var(--bg);
    color: var(--accent-2);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

#blazor-error-ui {
    color-scheme: dark;
    background: var(--surface);
    border-top: 2px solid var(--error);
    bottom: 0;
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.75rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
    color: var(--text);
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

@media (max-width: 900px) {
    .hero-grid,
    .support-grid,
    .hero-points {
        grid-template-columns: 1fr;
    }

    .card-head {
        flex-direction: column;
        gap: 0.5rem;
    }

    .card-note {
        text-align: left;
        max-width: none;
    }

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

@media (max-width: 640px) {
    .site-header {
        flex-direction: column;
        align-items: start;
        gap: 0.75rem;
    }

    .hero-card,
    .converter-card,
    .support-card {
        padding: 1rem;
    }
}