* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    padding: 24px;
    font-family: var(--font-body);
    color: var(--text);
    background: var(--bg);
}

.settings-shell {
    min-height: calc(100vh - 48px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.settings-card {
    width: min(820px, 100%);
    padding: 36px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-md);
}

.settings-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 28px;
}

.eyebrow {
    margin-bottom: 8px;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--honey-deep);
}

.settings-header h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3vw, 2.8rem);
    line-height: 1.05;
    color: var(--text);
}

.subtitle {
    max-width: 540px;
    margin-top: 12px;
    color: var(--muted);
    line-height: 1.6;
}

.header-actions,
.form-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.settings-content {
    display: grid;
    gap: 18px;
}

.setting-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--surface-2);
}

.setting-panel--stacked {
    flex-direction: column;
    align-items: stretch;
}

.setting-panel--quiet {
    background: transparent;
    border-color: var(--line);
}

.setting-copy h2 {
    margin-bottom: 8px;
    font-family: var(--font-display);
    font-size: 1.4rem;
    color: var(--text);
}

.setting-panel--quiet .setting-copy h2 {
    font-size: 1.1rem;
    color: var(--text-dim);
}

.setting-copy p {
    color: var(--muted);
    line-height: 1.6;
}

.toggle-row {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    font-weight: 700;
    color: var(--text);
}

.toggle-switch {
    position: relative;
    width: 54px;
    height: 30px;
    display: inline-block;
}

.toggle-switch input {
    width: 0;
    height: 0;
    opacity: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-pill);
    background: var(--surface-3);
    transition: background-color 0.2s ease;
}

.toggle-slider::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 4px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease;
}

.toggle-switch input:checked + .toggle-slider {
    background: linear-gradient(135deg, var(--honey-bright), var(--honey));
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(24px);
}

#buddyNameInput {
    min-width: 200px;
    padding: 10px 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface);
    color: var(--text);
    font: inherit;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

#buddyNameInput:focus {
    border-color: var(--peri);
    box-shadow: 0 0 0 3px rgba(87, 99, 203, 0.15);
}

#buddyNameInput:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

.language-fields {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.language-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1 1 180px;
}

.lang-select {
    padding: 10px 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--surface);
    color: var(--text);
    font: inherit;
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.lang-select:focus {
    border-color: var(--peri);
    box-shadow: 0 0 0 3px rgba(87, 99, 203, 0.15);
}

.lang-select:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

.field-error {
    color: var(--danger);
    font-size: 0.9rem;
}

.advanced {
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 4px 20px;
    background: transparent;
}

.advanced summary {
    padding: 16px 0;
    cursor: pointer;
    font-weight: 700;
    color: var(--muted);
    list-style: none;
}

.advanced summary::-webkit-details-marker {
    display: none;
}

.advanced summary::before {
    content: '\25B8';
    display: inline-block;
    margin-right: 8px;
    transition: transform 0.2s ease;
}

.advanced[open] summary::before {
    transform: rotate(90deg);
}

.advanced-content {
    display: grid;
    gap: 14px;
    padding-bottom: 18px;
}

.status-message {
    min-height: 1.4em;
    color: var(--muted);
}

.status-message.error {
    color: var(--danger);
}

.primary-button,
.secondary-button {
    border: 1px solid transparent;
    border-radius: var(--radius-pill);
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, color 0.2s ease, opacity 0.2s ease;
}

.primary-button {
    padding: 14px 22px;
    background: linear-gradient(135deg, var(--honey-bright), var(--honey));
    color: #ffffff;
    box-shadow: var(--shadow-sm);
}

.primary-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.secondary-button {
    padding: 12px 18px;
    background: var(--surface-2);
    border-color: var(--line);
    color: var(--text);
}

.secondary-button:hover:not(:disabled) {
    transform: translateY(-1px);
    background: var(--surface-3);
    border-color: var(--honey);
}

button:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

@media (max-width: 768px) {
    body {
        padding: 14px;
    }

    .settings-shell {
        min-height: calc(100vh - 28px);
    }

    .settings-card {
        padding: 24px 18px;
        border-radius: 24px;
    }

    .settings-header,
    .setting-panel,
    .header-actions,
    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .toggle-row {
        justify-content: space-between;
    }

    .primary-button,
    .secondary-button {
        width: 100%;
        justify-content: center;
    }
}