/* PDCA Interactive Section Styles */
.pdca-section {
    margin: 60px 0;
    font-family: 'Inter', sans-serif;
}

.pdca-tabs {
    display: flex;
    justify-content: center;
    gap: 25px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.pdca-tab {
    padding: 12px 22px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.95rem;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 10px;
    border: 4px solid transparent;
}

.pdca-tab i {
    font-size: 1.2rem;
}

/* Tab Colors - Solid Inactive, Solid with Border Active */
.pdca-tab.plan {
    background: #0066ff;
    color: white;
    border: 3px solid transparent;
}
.pdca-tab.plan.active {
    background: #0066ff;
    color: white;
    transform: scale(1.1);
    outline: 3px solid #0066ff;
    outline-offset: 3px;
}

.pdca-tab.do {
    background: #ffcc00;
    color: white;
    border: 3px solid transparent;
}
.pdca-tab.do.active {
    background: #ffcc00;
    color: white;
    transform: scale(1.1);
    outline: 3px solid #ffcc00;
    outline-offset: 3px;
}

.pdca-tab.check {
    background: #00c853;
    color: white;
    border: 3px solid transparent;
}
.pdca-tab.check.active {
    background: #00c853;
    color: white;
    transform: scale(1.1);
    outline: 3px solid #00c853;
    outline-offset: 3px;
}

.pdca-tab.act {
    background: #ff1744;
    color: white;
    border: 3px solid transparent;
}
.pdca-tab.act.active {
    background: #ff1744;
    color: white;
    transform: scale(1.1);
    outline: 3px solid #ff1744;
    outline-offset: 3px;
}

.pdca-content-container {
    background: #ffffff;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.03);
    border: 4px solid #0066ff; /* Default to Plan color */
    min-height: 400px;
    position: relative;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.pdca-content-container.plan-active { border-color: #0066ff; }
.pdca-content-container.do-active { border-color: #ffcc00; }
.pdca-content-container.check-active { border-color: #00c853; }
.pdca-content-container.act-active { border-color: #ff1744; }

.pdca-content {
    display: none;
    animation: fadeInSlide 0.5s ease forwards;
}

.pdca-content.active {
    display: block;
}

@keyframes fadeInSlide {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pdca-feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
    margin-top: 10px;
}

.pdca-feature-item {
    padding: 25px;
    border-radius: 15px;
    background: #ffffff;
    border: 2px solid #dddddd;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}

.pdca-feature-item:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
    border-color: #cccccc;
}

.pdca-feature-item strong {
    display: block;
    color: #222;
    font-size: 1.1rem;
    line-height: 1.3;
}

.pdca-feature-item span {
    color: #555;
    font-size: 0.95rem;
    line-height: 1.6;
}

.pdca-footer-quote {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px dashed #eee;
    font-style: italic;
    color: #555;
    text-align: center;
    font-size: 1.1rem;
}

/* Force centering */
.pdca-header-desc, .pdca-header-desc * {
    text-align: center !important;
    margin-left: auto !important;
    margin-right: auto !important;
}

.pdca-header-desc {
    margin-bottom: 40px;
    max-width: 950px;
}

.pdca-header-desc h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
    color: #222;
}

.pdca-header-desc p {
    font-size: 1.15rem;
    color: #555;
    line-height: 1.6;
}