/* ===== Supplement Advisor ===== */
:root {
    --sa-primary: #2d6a4f;
    --sa-primary-light: #40916c;
    --sa-primary-pale: #d8f3dc;
    --sa-accent: #d4a373;
    --sa-accent-light: #e9c89b;
    --sa-bg: #fefaf6;
    --sa-card: #ffffff;
    --sa-text: #1b1b1b;
    --sa-text-secondary: #6b6b6b;
    --sa-border: #e8e0d8;
    --sa-shadow: 0 2px 12px rgba(0,0,0,0.06);
    --sa-radius: 14px;
    --sa-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#sa-app {
    max-width: 720px;
    margin: 40px auto;
    padding: 0 16px;
    font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;
    color: var(--sa-text);
    line-height: 1.7;
}

/* ---- Steps ---- */
.sa-step { display: none; animation: saFadeIn 0.4s ease; }
.sa-step.sa-active { display: block; }

@keyframes saFadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---- Header ---- */
.sa-header {
    text-align: center;
    margin-bottom: 32px;
}
.sa-header-icon {
    font-size: 48px;
    margin-bottom: 8px;
}
.sa-header h2 {
    font-size: 22px;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--sa-primary);
}
.sa-subtitle {
    font-size: 14px;
    color: var(--sa-text-secondary);
    margin: 0;
}

/* ---- Concern Cards ---- */
.sa-concerns-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 28px;
}

.sa-concern-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 18px;
    background: var(--sa-card);
    border: 2px solid var(--sa-border);
    border-radius: var(--sa-radius);
    cursor: pointer;
    transition: var(--sa-transition);
    user-select: none;
}
.sa-concern-card:hover {
    border-color: var(--sa-primary-light);
    box-shadow: var(--sa-shadow);
}
.sa-concern-card.sa-selected {
    border-color: var(--sa-primary);
    background: var(--sa-primary-pale);
}
.sa-concern-card .sa-icon {
    font-size: 28px;
    flex-shrink: 0;
}
.sa-concern-card .sa-label {
    font-size: 14px;
    font-weight: 600;
}

/* ---- Question Section ---- */
.sa-question-group {
    background: var(--sa-card);
    border-radius: var(--sa-radius);
    padding: 24px;
    margin-bottom: 16px;
    box-shadow: var(--sa-shadow);
}
.sa-question-group h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--sa-primary);
    margin: 0 0 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.sa-question-group h3 .sa-icon { font-size: 22px; }

.sa-checkbox-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid var(--sa-border);
    cursor: pointer;
    transition: var(--sa-transition);
}
.sa-checkbox-row:last-child { border-bottom: none; }
.sa-checkbox-row:hover { color: var(--sa-primary); }

.sa-checkbox-row input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--sa-primary);
    cursor: pointer;
    flex-shrink: 0;
}
.sa-checkbox-row label {
    font-size: 14px;
    cursor: pointer;
    flex: 1;
}

/* ---- Buttons ---- */
.sa-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 14px 32px;
    border: none;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--sa-transition);
    font-family: inherit;
}
.sa-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
.sa-btn-primary {
    background: var(--sa-primary);
    color: #fff;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
    display: flex;
}
.sa-btn-primary:hover:not(:disabled) {
    background: var(--sa-primary-light);
    transform: translateY(-1px);
}
.sa-btn-secondary {
    background: transparent;
    color: var(--sa-text-secondary);
    border: 2px solid var(--sa-border);
}
.sa-btn-secondary:hover {
    border-color: var(--sa-primary);
    color: var(--sa-primary);
}

.sa-btn-group {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 24px;
    flex-wrap: wrap;
}

/* ---- Results ---- */
.sa-result-section {
    background: var(--sa-card);
    border-radius: var(--sa-radius);
    padding: 28px;
    margin-bottom: 20px;
    box-shadow: var(--sa-shadow);
}
.sa-result-section h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--sa-primary);
    margin: 0 0 18px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--sa-primary-pale);
}

.sa-product-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.sa-product-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    margin-bottom: 8px;
    background: var(--sa-bg);
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--sa-transition);
}
.sa-product-item:hover {
    background: var(--sa-primary-pale);
}
.sa-product-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    flex-shrink: 0;
}
.sa-badge-main {
    background: var(--sa-primary);
    color: #fff;
}
.sa-badge-addon {
    background: var(--sa-accent);
    color: #fff;
}
.sa-badge-fasting {
    background: #7b68ee;
    color: #fff;
}

/* ---- Fasting Section ---- */
.sa-fasting-section {
    margin-top: 24px;
}
.sa-fasting-card {
    background: linear-gradient(135deg, #f0e6ff 0%, #e8f4f8 100%);
    border-radius: var(--sa-radius);
    padding: 28px;
    box-shadow: var(--sa-shadow);
}
.sa-fasting-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: #5b3ea8;
    margin: 0 0 8px;
}
.sa-fasting-card .sa-fasting-sub {
    font-size: 13px;
    color: var(--sa-text-secondary);
    margin: 0 0 18px;
}

.sa-plan-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
}
.sa-plan-chip {
    padding: 6px 16px;
    border-radius: 20px;
    background: #fff;
    font-size: 13px;
    font-weight: 600;
    color: #5b3ea8;
    border: 1px solid #c9b6f0;
}

/* ---- Matched Concerns Tags ---- */
.sa-matched-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 12px;
}
.sa-tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    background: var(--sa-primary-pale);
    color: var(--sa-primary);
}

/* ---- Progress Indicator ---- */
.sa-progress {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 28px;
}
.sa-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--sa-border);
    transition: var(--sa-transition);
}
.sa-dot.sa-dot-active {
    background: var(--sa-primary);
    transform: scale(1.2);
}

/* ---- Count Badge ---- */
.sa-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--sa-primary);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    margin-left: 6px;
}

/* ---- Responsive ---- */
@media (max-width: 540px) {
    #sa-app { margin: 20px auto; }
    .sa-concerns-grid { grid-template-columns: 1fr; }
    .sa-header h2 { font-size: 19px; }
    .sa-concern-card { padding: 14px 14px; }
    .sa-result-section { padding: 20px; }
    .sa-btn { padding: 12px 24px; font-size: 14px; }
}