:root,
html[data-theme="dark"] {
    --canvas: #07070c;
    --panel: rgba(16, 18, 28, 0.84);
    --line: rgba(244, 241, 234, 0.12);
    --ink: #f4f1ea;
    --muted: rgba(244, 241, 234, 0.62);
    --accent: #7c6cff;
    --modal: #12141c;
    --input: rgba(255, 255, 255, 0.03);
    --logo-border: rgba(244, 241, 234, 0.9);
    --logo-fill: #07070c;
}

html[data-theme="light"] {
    --canvas: #f4f0e8;
    --panel: rgba(255, 253, 248, 0.92);
    --line: rgba(28, 27, 34, 0.12);
    --ink: #1c1b22;
    --muted: rgba(28, 27, 34, 0.62);
    --accent: #5b4dff;
    --modal: #fffdf8;
    --input: rgba(28, 27, 34, 0.04);
    --logo-border: rgba(28, 27, 34, 0.85);
    --logo-fill: #ffffff;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    min-height: 100%;
    background:
        radial-gradient(circle at 50% 18%, rgba(124, 108, 255, 0.18), transparent 42%),
        var(--canvas);
    color: var(--ink);
    font-family: Georgia, "Times New Roman", serif;
}

body {
    display: grid;
    place-items: center;
    padding: 32px 16px;
}

.card {
    width: min(460px, 100%);
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 36px 28px;
    backdrop-filter: blur(18px);
}

.brand-lockup {
    display: grid;
    place-items: center;
    box-sizing: border-box;
    width: min(260px, 72vw);
    height: min(260px, 72vw);
    margin: 0 auto 12px;
    overflow: hidden;
    border-radius: 999px;
    border: 5px solid var(--logo-border);
    background: var(--logo-fill);
}

.brand-lockup img {
    grid-area: 1 / 1;
    width: 100%;
    height: 100%;
    max-width: none;
    object-fit: cover;
    object-position: center;
}

.logo-light { display: none; }

html[data-theme="light"] .logo-dark,
html.theme-light .logo-dark { display: none; }

html[data-theme="light"] .logo-light,
html.theme-light .logo-light { display: block; }

.brand-name {
    margin: 0 0 4px;
    text-align: center;
    font-size: 11px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--muted);
    font-family: system-ui, sans-serif;
}

.brand-version {
    margin: 0 0 20px;
    text-align: center;
    font-size: 11px;
    letter-spacing: 0.02em;
    text-transform: none;
    color: var(--muted);
    font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
}

h1 {
    margin: 0 0 8px;
    font-size: 28px;
    font-weight: 500;
    letter-spacing: -0.03em;
}

p {
    margin: 0 0 28px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.5;
    font-family: system-ui, sans-serif;
}

label {
    display: block;
    margin: 0 0 8px;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
    font-family: system-ui, sans-serif;
}

input {
    width: 100%;
    margin-bottom: 16px;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: var(--input);
    color: var(--ink);
    font-size: 16px;
    font-family: system-ui, sans-serif;
}

.remember {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin: 2px 0 8px;
    text-transform: none;
    letter-spacing: 0;
    font-size: 14px;
    line-height: 1.4;
    color: var(--ink);
    cursor: pointer;
}

.remember input {
    width: 18px;
    height: 18px;
    margin: 1px 0 0;
    padding: 0;
    flex-shrink: 0;
    accent-color: var(--accent);
}

button {
    width: 100%;
    margin-top: 8px;
    padding: 13px 16px;
    border: 0;
    border-radius: 999px;
    background: linear-gradient(135deg, #9b8cff, #5b4dff);
    color: white;
    font-size: 15px;
    font-family: system-ui, sans-serif;
    cursor: pointer;
}

.modal {
    position: fixed;
    inset: 0;
    display: none;
    place-items: center;
    background: rgba(0, 0, 0, 0.55);
    padding: 16px;
}

.modal.is-open { display: grid; }

.modal-card {
    width: min(420px, 100%);
    background: var(--modal);
    border: 1px solid var(--line);
    border-radius: 20px;
    padding: 24px;
    font-family: system-ui, sans-serif;
}

.modal-card h2 { margin: 0 0 8px; font-size: 18px; }
.modal-card p { margin: 0 0 18px; white-space: pre-wrap; }
.modal-card button { width: auto; padding: 10px 18px; }

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