/* --- Studio UI System Variables --- */
:root {
    --studio-primary: #1a73e8;
    --studio-primary-hover: #1765cc;
    --studio-surface: #ffffff;
    --studio-bg: #f8f9fa;
    --studio-border: #dadce0;
    --studio-text-main: #202124;
    --studio-text-muted: #5f6368;
    --studio-error-bg: #fce8e6;
    --studio-error-text: #c5221f;
    --studio-success-bg: #e6f4ea;
    --studio-success-text: #188038;
    --studio-radius: 8px;
    --studio-radius-sm: 4px;
    --studio-shadow: 0 1px 2px 0 rgba(60,64,67,0.3), 0 1px 3px 1px rgba(60,64,67,0.15);
}

/* --- Base Container (Card) --- */
.studio-card {
    font-family: 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background: var(--studio-surface);
    border: 1px solid var(--studio-border);
    border-radius: var(--studio-radius);
    padding: 24px;
    box-shadow: var(--studio-shadow);
    color: var(--studio-text-main);
    margin-bottom: 20px;
}

.studio-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    font-size: 16px;
    font-weight: 500;
    color: var(--studio-text-main);
}

.studio-card-header svg {
    fill: var(--studio-text-muted);
    margin-right: 8px;
    vertical-align: text-bottom;
}

/* --- Typography --- */
.studio-label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--studio-text-muted);
    margin-bottom: 8px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.studio-text-small {
    font-size: 12px;
    color: var(--studio-text-muted);
    margin-top: 4px;
}

/* --- Buttons --- */
.studio-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--studio-radius-sm);
    cursor: pointer;
    transition: background-color 0.2s, box-shadow 0.2s;
    border: 1px solid transparent;
    text-decoration: none;
    gap: 8px;
    line-height: 1.25rem;
}

/* Primary Button (Blue) */
.studio-btn-primary {
    background-color: var(--studio-primary);
    color: #fff;
    box-shadow: 0 1px 2px rgba(60,64,67,0.3);
}
.studio-btn-primary:hover {
    background-color: var(--studio-primary-hover);
    box-shadow: 0 1px 3px 1px rgba(60,64,67,0.15);
    text-decoration: none;
    color: #fff;
}

/* Secondary Button (Outline) */
.studio-btn-secondary {
    background-color: #fff;
    border-color: var(--studio-border);
    color: var(--studio-primary);
}
.studio-btn-secondary:hover {
    background-color: #f1f3f4;
    border-color: var(--studio-border);
    text-decoration: none;
    color: var(--studio-primary-hover);
}

/* Danger Button */
.studio-btn-danger {
    background-color: #fff;
    border-color: var(--studio-border);
    color: var(--studio-error-text);
}
.studio-btn-danger:hover {
    background-color: var(--studio-error-bg);
}

/* --- Inputs & Form Elements --- */
.studio-input {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    border: 1px solid var(--studio-border);
    border-radius: var(--studio-radius-sm);
    background-color: #fff;
    color: var(--studio-text-main);
    transition: border 0.2s;
    box-sizing: border-box; /* レイアウト崩れ防止 */
}

.studio-input:focus {
    outline: none;
    border-color: var(--studio-primary);
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
}

/* Pimcore Relation Wrapper (既存のウィジェット用) */
.studio-relation-wrapper {
    border: 1px solid var(--studio-border);
    border-radius: var(--studio-radius-sm);
    padding: 4px;
    background: #f8f9fa;
}

/* --- Status Indicators (Alerts/Badges) --- */
.studio-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    padding: 8px 12px;
    border-radius: 6px;
    margin-top: 10px;
}

.studio-status.success {
    background-color: var(--studio-success-bg);
    color: var(--studio-success-text);
}

.studio-status.error {
    background-color: var(--studio-error-bg);
    color: var(--studio-error-text);
}

.studio-status.info {
    background-color: #e8f0fe;
    color: #1967d2;
}