:root {
    --forest-green: #1b4332;
    --mint-accent: #2d6a4f;
    --cedar-brown: #a98467;
    --parchment-bg: #f4f1ea;
    --card-bg: #ffffff;
    --text-main: #212529;
    --text-muted: #5c6460;
    --border-color: #e2ddd3;
    --radius: 16px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--parchment-bg);
    color: var(--text-main);
    line-height: 1.6;
    padding: 30px 20px;
}

.app-header {
    text-align: center;
    margin-bottom: 25px;
}

.brand-logo-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.brand-logo-img {
    width: 65px;
    height: 65px;
    margin-bottom: 2px;
}

.logo-text {
    font-size: 2.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    line-height: 1;
}

.brand-plan {
    color: var(--forest-green);
}

.brand-kit {
    color: var(--cedar-brown);
}

.brand-sub {
    color: var(--text-main);
    font-weight: 700;
    font-size: 0.82rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 6px;
}

.hero-tagline-bar {
    margin-top: 18px;
    padding: 10px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    font-weight: 800;
    letter-spacing: 1.5px;
    color: var(--forest-green);
    font-size: 0.95rem;
    text-transform: uppercase;
}

.main-container {
    max-width: 680px;
    margin: 24px auto 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: 0 10px 25px -5px rgba(27, 67, 50, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border-color);
}

.card h2, .card h3 {
    color: var(--forest-green);
    font-size: 1.35rem;
    margin-bottom: 8px;
}

.card h3 {
    font-size: 1.2rem;
}

.card-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 8px;
    color: var(--text-main);
}

.info-btn {
    background: #e8f0eb;
    color: var(--forest-green);
    border: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.info-btn:hover {
    background: var(--forest-green);
    color: white;
}

input, select {
    width: 100%;
    padding: 14px 16px;
    border: 1.5px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    background: #ffffff;
    color: var(--text-main);
    transition: all 0.2s ease;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--mint-accent);
    box-shadow: 0 0 0 4px rgba(45, 106, 79, 0.12);
}

.primary-btn {
    width: 100%;
    background-color: var(--forest-green);
    color: white;
    border: none;
    padding: 16px;
    font-size: 1.05rem;
    font-weight: 700;
    border-radius: 10px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    margin-top: 10px;
    box-shadow: 0 4px 12px rgba(27, 67, 50, 0.2);
}

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

.primary-btn:active {
    transform: scale(0.98);
}

.secondary-btn {
    width: 100%;
    background-color: transparent;
    color: var(--forest-green);
    border: 2px solid var(--forest-green);
    padding: 14px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}

.secondary-btn:hover {
    background-color: var(--forest-green);
    color: white;
}

.hidden {
    display: none !important;
}

.advice-banner {
    background: #eef6f2;
    border-left: 4px solid var(--forest-green);
    padding: 14px 18px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: #1a3a2a;
}

.advice-banner strong {
    color: var(--forest-green);
}

.materials-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 20px 0;
}

.material-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--parchment-bg);
    border-radius: 8px;
    font-size: 0.95rem;
    border: 1px solid var(--border-color);
}

.material-name {
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.material-qty {
    font-weight: 700;
    color: var(--forest-green);
}

/* Dynamic Pro Site Guide Box */
.pro-guide-box {
    background: #fdfbf7;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 18px;
    margin: 20px 0;
}

.pro-guide-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--forest-green);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.pro-guide-body {
    font-size: 0.88rem;
    color: var(--text-main);
    line-height: 1.5;
}

.basket-section {
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
    margin-top: 24px;
}

.basket-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 14px;
}

.merchant-tabs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 16px;
}

.tab-btn {
    padding: 10px 4px;
    border: 1.5px solid var(--border-color);
    background: white;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.tab-btn.active {
    background: var(--forest-green);
    color: white;
    border-color: var(--forest-green);
}

.basket-action-box {
    background: #f0f7f4;
    border: 1.5px dashed var(--mint-accent);
    padding: 18px;
    border-radius: 10px;
    text-align: center;
}

.basket-link-btn {
    display: inline-block;
    background: var(--cedar-brown);
    color: white;
    text-decoration: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    margin-top: 10px;
    transition: background 0.2s, transform 0.1s;
    box-shadow: 0 4px 10px rgba(169, 132, 103, 0.25);
}

.basket-link-btn:hover {
    background: #8e6d53;
}

/* Modal Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

.modal-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 24px;
    max-width: 480px;
    width: 100%;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.15);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.modal-badge {
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--forest-green);
    background: #e8f0eb;
    padding: 4px 8px;
    border-radius: 6px;
    letter-spacing: 1px;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
}

.modal-text {
    font-size: 0.95rem;
    color: var(--text-main);
    line-height: 1.5;
}

.action-footer {
    margin-top: 24px;
}

.app-footer {
    text-align: center;
    margin-top: 40px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.app-footer a {
    color: var(--forest-green);
    text-decoration: none;
}

/* --- Clean Print / PDF Output Rules (Isolated to Print View) --- */
#printHeaderBanner {
    display: none;
}

@media print {
    header, 
    footer, 
    nav, 
    .app-header, 
    .hero-tagline-bar, 
    #inputFormCard, 
    .merchant-tabs, 
    .basket-section, 
    .basket-action-box, 
    #copyListBtn, 
    #nativeShareBtn, 
    #pdfBtn, 
    .info-btn, 
    .modal-overlay {
        display: none !important;
    }

    body {
        background: #ffffff !important;
        color: #000000 !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    #printHeaderBanner {
        display: block !important;
    }

    #resultsSection {
        display: block !important;
        visibility: visible !important;
        background: #ffffff !important;
        box-shadow: none !important;
        border: none !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    .material-item, 
    .pro-guide-body, 
    #printHeaderBanner {
        break-inside: avoid !important;
        page-break-inside: avoid !important;
    }
}