:root {
    --primary-blue: #01a0e8;
    --primary-blue-dark: #3a5bbd;
    --light-gray: #f8f9fa;
    --white: #ffffff;
    --dark-text: #212529;
    --light-text: #6c757d;
    --border-color: #dee2e6;
    --success-green: #198754;
}

.diagnosis-tool-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 0;
    background-color: var(--light-gray);
}

.diagnosis-tool-container #app {
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    width: 95%;
    max-width: 640px;
    padding: 40px;
    box-sizing: border-box;
    border: 1px solid #e9ecef;
}

.diagnosis-tool-container .hidden {
    display: none;
}

/* --- Intro Page --- */
.diagnosis-tool-container #intro-page h1 {
    color: var(--primary-blue);
    font-weight: 800;
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
}

.diagnosis-tool-container #intro-page p {
    text-align: center;
    color: var(--light-text);
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

/* --- Buttons --- */
.diagnosis-tool-container button {
    background-color: var(--primary-blue);
    color: var(--white);
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 700;
    transition: all 0.3s ease;
    display: block;
    margin: 20px auto 0 auto;
}

.diagnosis-tool-container button:hover {
    background-color: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(74, 113, 224, 0.4);
}

.diagnosis-tool-container #back-btn {
    background-color: var(--light-text);
}

.diagnosis-tool-container #back-btn:hover {
    background-color: #5a6268;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* --- Questions Page --- */
.diagnosis-tool-container #progress-bar-container {
    width: 100%;
    background-color: #e9ecef;
    border-radius: 8px;
    margin-bottom: 30px;
    height: 12px;
    overflow: hidden;
}

.diagnosis-tool-container #progress-bar {
    width: 0%;
    height: 100%;
    background-color: var(--primary-blue);
    border-radius: 8px;
    transition: width 0.4s ease;
}

.diagnosis-tool-container .question p {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-align: center;
}

.diagnosis-tool-container .options {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.diagnosis-tool-container .options label {
    flex-grow: 1;
    flex-basis: calc(50% - 10px);
    display: block;
    position: relative;
}

.diagnosis-tool-container .options input[type="radio"] {
    position: absolute;
    opacity: 0;
}

.diagnosis-tool-container .options span {
    display: block;
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 1.1rem;
}

.diagnosis-tool-container .options input[type="radio"]:hover + span {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.diagnosis-tool-container .options input[type="radio"]:checked + span {
    background-color: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
    font-weight: 700;
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(74, 113, 224, 0.3);
}

.diagnosis-tool-container .question[data-id="P2"] .options label {
    flex-basis: 100%;
}

.diagnosis-tool-container #navigation-container {
    margin-top: 30px;
    display: flex;
    justify-content: center;
}

/* --- Results Page --- */
.diagnosis-tool-container #results-page h2 {
    text-align: center;
    color: var(--primary-blue);
    font-weight: 800;
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.diagnosis-tool-container #results-page h3 {
    text-align: center;
    font-size: 2rem;
    color: var(--dark-text);
    font-weight: 700;
    margin-bottom: 5px;
}

.diagnosis-tool-container #phase-display {
    font-weight: 800;
    color: var(--primary-blue);
    font-size: 2rem;
}

.diagnosis-tool-container .chart-container {
    position: relative;
    width: 100%;
    max-width: 550px;
    margin: 20px auto;
    aspect-ratio: 1 / 1;
}

.diagnosis-tool-container #actions-container {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.diagnosis-tool-container #actions-container .action {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    transition: all 0.3s ease;
}

.diagnosis-tool-container #actions-container .action:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    border-color: var(--primary-blue);
}

.diagnosis-tool-container #actions-container .action h4 {
    margin-top: 0;
    color: var(--primary-blue);
    font-weight: 700;
    font-size: 1.9rem;
}

.diagnosis-tool-container #actions-container .action .checklist {
    list-style-type: none;
    padding-left: 0;
    margin: 15px 0;
}

.diagnosis-tool-container #actions-container .action .checklist li {
    padding-left: 30px;
    margin-bottom: 10px;
    position: relative;
    font-size: 1.6rem;
}

.diagnosis-tool-container #actions-container .action .checklist li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-green);
    font-weight: bold;
    font-size: 1.2rem;
}

.diagnosis-tool-container #actions-container .action .cta a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 700;
}

.diagnosis-tool-container .result-section:last-child {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.diagnosis-tool-container #results-page .action p {
    font-size: 1.6rem; /* ← この数値を1.8remなどに変更してください */
    line-height: 1.6;
    margin-bottom: 1rem;
}

.diagnosis-tool-container #results-page .action p.cta {
    margin-top: 1.5rem;
}