.settings-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    box-sizing: border-box;
}

.settings-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
    transition: background-color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
    width: 100%;
    box-sizing: border-box;
}

.settings-card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.settings-card-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--accent-soft);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.settings-card-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 0.25rem;
}

.settings-card-subtitle {
    font-size: 0.875rem;
    color: var(--muted);
}

.settings-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ink-soft);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--ink);
    font-size: 0.95rem;
    box-sizing: border-box;
    transition: border-color 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out);
}

@media (max-width: 600px) {
    .settings-card {
        padding: 1.25rem 1rem;
    }
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-hint {
    font-size: 0.775rem;
    color: var(--muted);
}

.settings-form-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.5rem;
}

.settings-msg {
    font-size: 0.875rem;
    font-weight: 500;
}

.settings-msg.success {
    color: #10B981;
}

.settings-msg.error {
    color: var(--danger);
}

/* Theme Selection Group */
.theme-selection-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

@media (max-width: 600px) {
    .theme-selection-group {
        grid-template-columns: 1fr;
    }
}

.theme-option {
    position: relative;
    cursor: pointer;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1.25rem 1rem;
    background: var(--bg);
    transition: border-color 0.2s var(--ease-out), background-color 0.2s var(--ease-out), transform 0.15s var(--ease-out);
    display: block;
}

.theme-option:hover {
    border-color: var(--muted);
    transform: translateY(-2px);
}

.theme-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.theme-option.active {
    border-color: var(--accent);
    background: var(--accent-soft);
}

.theme-option-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.5rem;
    color: var(--ink-soft);
}

.theme-option.active .theme-option-content {
    color: var(--accent);
}

.theme-option-content svg, .theme-option-content i {
    width: 24px;
    height: 24px;
}

.theme-label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--ink);
}

.theme-desc {
    font-size: 0.775rem;
    color: var(--muted);
}

/* Button & Alignment Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    line-height: 1;
    cursor: pointer;
    transition: background-color 0.2s var(--ease-out), transform 0.15s var(--ease-out);
    border: none;
    outline: none;
}

.btn i, .btn svg {
    width: 18px;
    height: 18px;
    display: inline-block;
    vertical-align: middle;
    flex-shrink: 0;
}

.btn span {
    display: inline-flex;
    align-items: center;
    line-height: 1;
}

.btn-primary {
    background-color: var(--accent);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.btn-danger {
    background-color: var(--danger, #EF4444);
    color: #FFFFFF !important;
    border: 1px solid var(--danger, #EF4444);
    box-shadow: 0 1px 3px rgba(239, 68, 68, 0.2);
    transition: all 0.2s var(--ease-out);
}

.btn-danger:hover:not(:disabled) {
    background-color: #DC2626 !important;
    border-color: #B91C1C !important;
    color: #FFFFFF !important;
    box-shadow: 0 4px 14px rgba(220, 38, 38, 0.35);
    transform: translateY(-1px);
}

.btn-danger:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(220, 38, 38, 0.25);
}

.btn-danger:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.btn-outline {
    background-color: transparent;
    color: var(--ink);
    border: 1px solid var(--border);
    transition: all 0.2s var(--ease-out);
}

.btn-outline:hover:not(:disabled) {
    background-color: var(--bg);
    border-color: var(--ink-soft);
    color: var(--ink);
}

/* Danger Zone / Account Deletion Card */
.danger-zone-card {
    border-color: rgba(239, 68, 68, 0.25);
    background: var(--surface);
    transition: border-color 0.2s var(--ease-out);
}

.danger-icon {
    background: rgba(239, 68, 68, 0.1) !important;
    color: var(--danger, #EF4444) !important;
}

.text-danger {
    color: var(--danger, #EF4444) !important;
}

.delete-account-body {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.delete-account-warning {
    font-size: 0.875rem;
    color: var(--ink-soft);
    line-height: 1.5;
    padding: 0.85rem 1rem;
    background: rgba(239, 68, 68, 0.06);
    border-left: 3px solid var(--danger, #EF4444);
    border-radius: var(--radius-sm);
}

.delete-account-form-box {
    animation: fadeIn 0.25s var(--ease-out) forwards;
}

.delete-account-form-box.hidden,
.delete-account-initial.hidden {
    display: none !important;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.delete-summary-list {
    list-style: none;
    padding: 0;
    margin: 0.75rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.delete-summary-list li {
    font-size: 0.85rem;
    color: var(--ink-soft);
    display: flex;
    align-items: center;
    gap: 8px;
}

.delete-summary-list li i {
    width: 16px;
    height: 16px;
    color: var(--danger, #EF4444);
}

.delete-confirm-prompt {
    font-size: 0.875rem;
    color: var(--ink);
    margin-top: 0.5rem;
}