.spl-app {
    --spl-bg: #0a0b0d;
    --spl-card: #111318;
    --spl-card-2: #151820;
    --spl-line: rgba(255,255,255,.09);
    --spl-text: #f5f7fb;
    --spl-muted: #8d95a5;
    --spl-soft: #c8ced8;
    --spl-accent: #b7ff5a;
    --spl-accent-2: #72f5b4;
    --spl-danger: #ffb37b;
    color: var(--spl-text);
    font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    width: 100%;
}

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

.spl-shell {
    width: min(920px, 100%);
    margin: 0 auto;
    padding: clamp(18px, 4vw, 38px);
    border: 1px solid var(--spl-line);
    border-radius: 28px;
    background:
        radial-gradient(circle at 96% 0%, rgba(183,255,90,.09), transparent 30%),
        linear-gradient(180deg, #0e1014 0%, var(--spl-bg) 100%);
    box-shadow: 0 24px 80px rgba(0,0,0,.22);
}

.spl-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 24px;
}

.spl-eyebrow, .spl-label {
    display: block;
    margin: 0 0 8px;
    color: var(--spl-muted);
    font-size: 11px;
    line-height: 1;
    font-weight: 750;
    letter-spacing: .15em;
}

.spl-title {
    margin: 0;
    max-width: 650px;
    color: var(--spl-text);
    font-size: clamp(27px, 5vw, 44px);
    line-height: 1.03;
    letter-spacing: -.045em;
    font-weight: 760;
}

.spl-subtitle {
    max-width: 620px;
    margin: 12px 0 0;
    color: var(--spl-muted);
    font-size: 15px;
    line-height: 1.55;
}

.spl-local-badge {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 11px;
    border: 1px solid var(--spl-line);
    border-radius: 999px;
    background: rgba(255,255,255,.035);
    color: var(--spl-soft);
    font-size: 12px;
    font-weight: 650;
}

.spl-local-dot {
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: var(--spl-accent-2);
    box-shadow: 0 0 0 4px rgba(114,245,180,.08);
}

.spl-output-card, .spl-panel {
    border: 1px solid var(--spl-line);
    background: rgba(255,255,255,.035);
    border-radius: 20px;
}

.spl-output-card { padding: clamp(18px, 4vw, 28px); }

.spl-output-topline, .spl-panel-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.spl-char-count { color: var(--spl-muted); font-size: 12px; }

.spl-password-row {
    display: flex;
    align-items: center;
    gap: 14px;
    min-width: 0;
    margin-top: 7px;
}

.spl-password {
    flex: 1;
    min-width: 0;
    overflow-wrap: anywhere;
    color: var(--spl-text);
    background: transparent;
    padding: 0;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
    font-size: clamp(18px, 3.2vw, 27px);
    line-height: 1.42;
    letter-spacing: .02em;
}

.spl-password.is-hidden {
    -webkit-text-security: disc;
    text-security: disc;
    overflow-wrap: normal;
    white-space: nowrap;
    overflow: hidden;
}

.spl-icon-button, .spl-button {
    appearance: none;
    border: 1px solid var(--spl-line);
    color: var(--spl-soft);
    background: rgba(255,255,255,.045);
    cursor: pointer;
    transition: transform .16s ease, background .16s ease, border-color .16s ease;
}

.spl-icon-button:hover, .spl-button:hover {
    transform: translateY(-1px);
    background: rgba(255,255,255,.075);
    border-color: rgba(255,255,255,.17);
}

.spl-icon-button:focus-visible, .spl-button:focus-visible, .spl-range:focus-visible, .spl-switch input:focus-visible + .spl-switch-track {
    outline: 2px solid var(--spl-accent);
    outline-offset: 3px;
}

.spl-icon-button {
    min-width: 54px;
    padding: 8px 10px;
    border-radius: 10px;
    font-size: 12px;
}

.spl-action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    margin-top: 22px;
}

.spl-button {
    min-height: 42px;
    padding: 9px 15px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 680;
}

.spl-button-primary {
    color: #11150c;
    border-color: var(--spl-accent);
    background: var(--spl-accent);
}
.spl-button-primary:hover { background: #c4ff76; border-color: #c4ff76; }

.spl-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-top: 14px;
}

.spl-panel { padding: 21px; }
.spl-panel h3 { margin: 2px 0 0; color: var(--spl-text); font-size: 18px; letter-spacing: -.02em; }

.spl-length-value {
    color: var(--spl-accent);
    font-size: 26px;
    font-weight: 760;
    font-variant-numeric: tabular-nums;
}

.spl-slider-wrap { display: block; margin-top: 25px; }
.spl-range { width: 100%; accent-color: var(--spl-accent); cursor: pointer; }
.spl-range-meta { display: flex; justify-content: space-between; margin-top: 5px; color: var(--spl-muted); font-size: 10px; }

.spl-option-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-top: 20px;
    padding-top: 17px;
    border-top: 1px solid var(--spl-line);
}
.spl-option-row strong { display: block; color: var(--spl-soft); font-size: 13px; }
.spl-option-row span { display: block; margin-top: 3px; color: var(--spl-muted); font-size: 11px; }

.spl-switch { position: relative; flex: 0 0 auto; width: 46px; height: 26px; cursor: pointer; }
.spl-switch input { position: absolute; opacity: 0; pointer-events: none; }
.spl-switch-track {
    display: block;
    width: 46px;
    height: 26px;
    border-radius: 999px;
    background: #303540;
    transition: background .18s ease;
}
.spl-switch-track::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    top: 3px;
    left: 3px;
    border-radius: 50%;
    background: #fff;
    transition: transform .18s ease;
}
.spl-switch input:checked + .spl-switch-track { background: var(--spl-accent); }
.spl-switch input:checked + .spl-switch-track::after { transform: translateX(20px); background: #11150c; }

.spl-bits { text-align: right; }
.spl-bits strong { display: block; color: var(--spl-accent); font-size: 27px; line-height: 1; font-variant-numeric: tabular-nums; }
.spl-bits span { color: var(--spl-muted); font-size: 10px; text-transform: uppercase; letter-spacing: .11em; }

.spl-meter {
    height: 7px;
    margin-top: 27px;
    overflow: hidden;
    border-radius: 999px;
    background: #262b34;
}
.spl-meter > span {
    display: block;
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--spl-danger), var(--spl-accent));
    transition: width .25s ease;
}
.spl-strength-copy { margin: 13px 0 0; color: var(--spl-soft); font-size: 12px; line-height: 1.5; }
.spl-formula { margin: 7px 0 0; color: var(--spl-muted); font: 11px/1.5 "SFMono-Regular", Consolas, monospace; }

.spl-qr-panel {
    display: grid;
    grid-template-columns: minmax(0,1fr) auto;
    align-items: center;
    gap: 34px;
    margin-top: 14px;
    transition: opacity .18s ease, transform .18s ease;
}
.spl-qr-panel[hidden] { display: none; }
.spl-qr-copy p { max-width: 530px; margin: 10px 0 0; color: var(--spl-muted); font-size: 13px; line-height: 1.55; }
.spl-qr-copy .spl-warning { color: var(--spl-danger); }
.spl-qr-frame {
    width: 210px;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    padding: 12px;
    border-radius: 16px;
    background: #fff;
    overflow: hidden;
}
.spl-qr-frame svg { display: block; width: 100%; height: 100%; shape-rendering: crispEdges; }

.spl-footer {
    margin-top: 16px;
    color: var(--spl-muted);
    font-size: 10px;
    line-height: 1.55;
    text-align: center;
}
.spl-footer code { color: var(--spl-soft); background: transparent; padding: 0; }

@media (max-width: 720px) {
    .spl-shell { border-radius: 20px; }
    .spl-header { display: block; }
    .spl-local-badge { margin-top: 16px; }
    .spl-grid { grid-template-columns: 1fr; }
    .spl-qr-panel { grid-template-columns: 1fr; }
    .spl-qr-frame { width: min(240px, 100%); justify-self: center; }
}

@media (max-width: 430px) {
    .spl-shell { padding: 17px; }
    .spl-output-card, .spl-panel { border-radius: 16px; }
    .spl-password-row { align-items: flex-start; }
    .spl-icon-button { min-width: 48px; }
    .spl-action-row .spl-button { flex: 1 1 auto; }
}

@media (prefers-reduced-motion: reduce) {
    .spl-app *, .spl-app *::before, .spl-app *::after { transition: none !important; }
}