.card {
    background: var(--surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
}

.btn {
    appearance: none;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.9rem 1.15rem;
    cursor: pointer;
    transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease, border-color 160ms ease, opacity 160ms ease;
    font-weight: 700;
    letter-spacing: 0.01em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    white-space: nowrap;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    cursor: not-allowed;
    opacity: 0.6;
    transform: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 75%, #111827));
    color: var(--accent-foreground);
    box-shadow: 0 12px 28px color-mix(in srgb, var(--accent) 24%, transparent);
}

.btn-ghost {
    background: rgba(255, 255, 255, 0.6);
    color: var(--text);
    border-color: var(--border);
}

html[data-theme="dark"] .btn-ghost {
    background: rgba(255, 255, 255, 0.06);
}

.btn-small {
    padding: 0.7rem 0.95rem;
    font-weight: 600;
}

.btn-lg {
    min-width: 180px;
}

.eyebrow {
    margin: 0 0 0.6rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.78rem;
    font-weight: 700;
}

.field {
    display: grid;
    gap: 0.5rem;
    color: var(--muted);
}

.field > span {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--muted);
}

.field input[type="text"],
.field input[type="number"],
.field select,
.field textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.88);
    padding: 0.95rem 1rem;
    color: var(--text);
    outline: none;
    transition: border-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

html[data-theme="dark"] .field input[type="text"],
html[data-theme="dark"] .field input[type="number"],
html[data-theme="dark"] .field select,
html[data-theme="dark"] .field textarea,
html[data-theme="dark"] .output-row input,
html[data-theme="dark"] .result-password {
    background: rgba(2, 6, 23, 0.55);
}

.field input[type="text"]:focus,
.field input[type="number"]:focus,
.field select:focus,
.field textarea:focus {
    border-color: color-mix(in srgb, var(--accent) 40%, #60a5fa);
    box-shadow: 0 0 0 4px var(--ring);
}

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

.toggle-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.84rem 1rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.78);
    border: 1px solid var(--border);
    color: var(--text);
    cursor: pointer;
    user-select: none;
    transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

html[data-theme="dark"] .toggle-pill {
    background: rgba(255, 255, 255, 0.06);
}

.toggle-pill:hover {
    transform: translateY(-1px);
}

.toggle-pill input {
    accent-color: var(--accent);
}

.toggle-pill--inline {
    width: fit-content;
}

.empty-state {
    padding: 18px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.68);
    border: 1px dashed rgba(15, 23, 42, 0.12);
    color: var(--muted);
}

html[data-theme="dark"] .empty-state {
    background: rgba(255, 255, 255, 0.05);
}