/* ==========================================================================
   EnerThai Premium E-Commerce Website - Page-Specific Styles
   ========================================================================== */

/* 1. Animations & Keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    opacity: 0;
}
.animate-fade-in.visible {
    animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* 2. Home Page Hero Section */
.hero-section {
    min-height: calc(100vh - var(--header-height));
    padding-top: var(--header-height);
    display: flex;
    align-items: center;
    background-color: var(--bg-primary);
    position: relative;
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
    gap: 60px;
    width: 100%;
}

@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 60px 0;
    }
}

.hero-subtitle {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 44px;
    }
}

.hero-description {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 540px;
}

@media (max-width: 992px) {
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
}

.hero-cta {
    display: flex;
    gap: 16px;
}

@media (max-width: 992px) {
    .hero-cta {
        justify-content: center;
    }
}

.hero-visual {
    position: relative;
    height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 992px) {
    .hero-visual {
        height: 350px;
        order: -1;
    }
}

/* Premium Visual Gel Packet Placeholder */
.gel-placeholder {
    width: 180px;
    height: 340px;
    border-radius: 20px;
    position: relative;
    box-shadow: 0 30px 60px rgba(0,0,0,0.12);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 24px;
    color: #FFFFFF;
    transition: var(--transition-smooth);
}

.gel-placeholder:hover {
    transform: translateY(-10px) rotate(3deg);
}

.hero-gel-image {
    height: 400px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 25px 50px rgba(0, 0, 0, 0.15));
    transition: var(--transition-smooth);
}
.hero-gel-image:hover {
    transform: translateY(-12px) rotate(3deg) scale(1.02);
}

.journey-gel-image {
    height: 380px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.12));
    transition: var(--transition-smooth);
}
.journey-gel-image:hover {
    transform: translateY(-8px) rotate(-2deg) scale(1.02);
}

.product-card-image {
    height: 220px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.08));
    transition: var(--transition-smooth);
}
.product-card:hover .product-card-image {
    transform: translateY(-8px) scale(1.04);
}

.product-detail-image {
    height: 440px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 30px 60px rgba(0, 0, 0, 0.12));
    transition: var(--transition-smooth);
}
.product-detail-image:hover {
    transform: translateY(-10px) rotate(2deg) scale(1.02);
}

.gel-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 16px;
    background-color: rgba(255,255,255,0.25);
    border-radius: 0 0 12px 12px;
}

.gel-placeholder-brand {
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.gel-placeholder-logo {
    margin-top: 40px;
    font-size: 32px;
    font-weight: 800;
    text-align: center;
    line-height: 1;
}

.gel-placeholder-name {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.01em;
    text-transform: uppercase;
}

.gel-placeholder-info {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    opacity: 0.9;
}

/* Gradients for products */
.sunrise-grad {
    background: radial-gradient(circle at top left, #FFE29A, #FFA34F, #E9C46A);
}
.strike-grad {
    background: linear-gradient(135deg, #FF6B6B, #E76F51, #D32F2F);
}
.sunset-grad {
    background: linear-gradient(135deg, #7C3AED, #8B5CF6, #4F46E5);
}

.hero-visual-bg {
    position: absolute;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(233,196,106,0.1) 0%, rgba(250,249,246,0) 70%);
    border-radius: 50%;
    z-index: -1;
}

/* 3. Product Journey Section */
.journey-switcher {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 60px;
}

.journey-tab {
    padding: 24px;
    text-align: center;
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition-smooth);
    border-bottom: 4px solid transparent;
    margin-bottom: -2px;
}

.journey-tab:hover {
    color: var(--text-primary);
}

.journey-tab.active[data-phase="sunrise"] {
    color: var(--text-primary);
    border-color: var(--color-sunrise);
}

.journey-tab.active[data-phase="strike"] {
    color: var(--text-primary);
    border-color: var(--color-strike);
}

.journey-tab.active[data-phase="sunset"] {
    color: var(--text-primary);
    border-color: var(--color-sunset);
}

.journey-content-panel {
    display: none;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 80px;
    align-items: center;
}

.journey-content-panel.active {
    display: grid;
}

@media (max-width: 992px) {
    .journey-content-panel {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

.journey-details h3 {
    font-size: 36px;
    margin-bottom: 8px;
}

.journey-phase-tag {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 20px;
    display: inline-block;
}

.journey-description {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.journey-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 40px;
}

.journey-meta-item h4 {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.journey-meta-item p {
    font-size: 15px;
    font-weight: 600;
}

/* 4. Products Catalog Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

@media (max-width: 992px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
}

.product-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 32px;
    display: flex;
    flex-direction: column;
    transition: var(--transition-smooth);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.04);
}

.product-card-image-wrapper {
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-primary);
    border-radius: 16px;
    margin-bottom: 24px;
    overflow: hidden;
    position: relative;
}

.product-card-title {
    font-size: 22px;
    font-weight: 800;
    margin-bottom: 4px;
}

.product-card-purpose {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.product-card-desc {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 24px;
    flex-grow: 1;
}

.product-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.product-card-price {
    font-size: 20px;
    font-weight: 700;
}

/* 5. Product Detail Layout */
.product-detail-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 80px;
    align-items: start;
}

@media (max-width: 992px) {
    .product-detail-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

.product-gallery {
    position: sticky;
    top: 120px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

@media (max-width: 992px) {
    .product-gallery {
        position: static;
    }
}

.gallery-main {
    height: 500px;
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 576px) {
    .gallery-main {
        height: 350px;
    }
}

.product-info-panel h1 {
    font-size: 48px;
    margin-bottom: 4px;
}

.product-info-panel .product-purpose-tag {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
    display: inline-block;
}

.product-price-large {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 24px;
    font-family: var(--font-heading);
}

.product-desc-large {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.product-buy-row {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
    align-items: center;
}

.product-detail-section {
    border-top: 1px solid var(--border-color);
    padding: 32px 0;
}

.product-detail-section h3 {
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* Styled Nutrition Label */
.nutrition-panel {
    border: 1px solid #111111;
    padding: 20px;
    background-color: #FFFFFF;
    font-family: 'Inter', sans-serif;
    color: #111111;
    max-width: 350px;
    border-radius: 0; /* Traditional look */
}

.nutrition-panel h4 {
    font-size: 28px;
    font-weight: 900;
    border-bottom: 6px solid #111111;
    padding-bottom: 4px;
    margin-bottom: 8px;
}

.nutrition-panel-serving {
    font-size: 12px;
    border-bottom: 3px solid #111111;
    padding-bottom: 8px;
    margin-bottom: 8px;
}

.nutrition-calories-row {
    display: flex;
    justify-content: space-between;
    font-weight: 900;
    font-size: 20px;
    border-bottom: 5px solid #111111;
    padding: 4px 0;
    margin-bottom: 8px;
}

.nutrition-dv-header {
    text-align: right;
    font-size: 10px;
    font-weight: 700;
    border-bottom: 1px solid #111111;
    padding-bottom: 4px;
    margin-bottom: 6px;
}

.nutrition-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    border-bottom: 1px solid #CCCCCC;
    padding: 6px 0;
}

.nutrition-row.indent {
    padding-left: 16px;
}

.nutrition-row.bold {
    font-weight: 700;
}

.nutrition-row.thick-bottom {
    border-bottom: 4px solid #111111;
}

.nutrition-disclaimer {
    font-size: 10px;
    margin-top: 10px;
    color: #666666;
    line-height: 1.3;
}

/* 6. Fueling Calculator */
.calc-layout {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 48px;
    align-items: start;
}

@media (max-width: 992px) {
    .calc-layout {
        grid-template-columns: 1fr;
    }
}

.calc-sidebar {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 32px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 10px;
}

.preset-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 12px;
}

.preset-btn {
    border: 1px solid var(--border-color);
    padding: 10px 4px;
    text-align: center;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    background-color: #FFFFFF;
}

.preset-btn.active, .preset-btn:hover {
    border-color: var(--text-primary);
    background-color: var(--text-primary);
    color: #FFFFFF;
}

.input-with-unit {
    position: relative;
    display: flex;
}

.input-with-unit input {
    width: 100%;
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
}

.input-with-unit .unit {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
}

.select-custom {
    width: 100%;
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 600;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23666666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 16px;
    background-color: #FFFFFF;
}

/* Results Panel */
.calc-results {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px;
    min-height: 500px;
}

.calc-welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    color: var(--text-muted);
    padding-top: 100px;
}

.calc-welcome svg {
    margin-bottom: 24px;
    opacity: 0.4;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

@media (max-width: 768px) {
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.result-stat {
    background-color: var(--bg-primary);
    padding: 20px;
    border-radius: 16px;
    text-align: center;
}

.result-stat-val {
    font-size: 28px;
    font-weight: 800;
    font-family: var(--font-heading);
    margin-bottom: 4px;
}

.result-stat-lbl {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.timeline-container {
    margin-top: 40px;
    border-top: 1px solid var(--border-color);
    padding-top: 40px;
}

.timeline {
    position: relative;
    padding-left: 32px;
    border-left: 2px solid var(--border-color);
    margin-left: 16px;
}

.timeline-item {
    position: relative;
    margin-bottom: 32px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -42px;
    top: 4px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background-color: var(--border-color);
    border: 4px solid var(--bg-card);
}

.timeline-dot.sunrise { background-color: var(--color-sunrise); }
.timeline-dot.strike { background-color: var(--color-strike); }
.timeline-dot.sunset { background-color: var(--color-sunset); }

.timeline-time {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.timeline-content {
    background-color: var(--bg-primary);
    padding: 16px 20px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    gap: 16px;
}

.timeline-product-tag {
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 700;
    border-radius: 4px;
    color: #FFFFFF;
}

.timeline-product-tag.sunrise { background-color: var(--color-sunrise); color: var(--text-primary); }
.timeline-product-tag.strike { background-color: var(--color-strike); }
.timeline-product-tag.sunset { background-color: var(--color-sunset); }

/* 7. Science Page Graphics */
.science-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: center;
}

@media (max-width: 992px) {
    .science-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

.science-chart-wrapper {
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.02);
}

.chart-bar-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 30px;
}

.chart-bar-row {
    display: grid;
    grid-template-columns: 100px 1fr 50px;
    align-items: center;
    gap: 16px;
}

.chart-bar-label {
    font-size: 13px;
    font-weight: 700;
}

.chart-bar-track {
    height: 12px;
    background-color: var(--bg-primary);
    border-radius: 6px;
    overflow: hidden;
}

.chart-bar-fill {
    height: 100%;
    border-radius: 6px;
    width: 0;
    transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.chart-bar-val {
    font-size: 13px;
    font-weight: 700;
    text-align: right;
}

/* 8. FAQ Accordion */
.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.faq-question {
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 700;
    font-family: var(--font-heading);
    font-size: 18px;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s ease;
    padding: 0 24px;
    color: var(--text-muted);
    font-size: 15px;
}

.faq-item.active {
    border-color: var(--text-primary);
}

.faq-item.active .faq-answer {
    padding: 0 24px 24px;
    max-height: 200px; /* Safe upper bound */
}

.faq-icon {
    font-size: 20px;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

/* 9. Contact Page */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
}

@media (max-width: 992px) {
    .contact-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }
}

.contact-info h3 {
    font-size: 32px;
    margin-bottom: 16px;
}

.contact-info p {
    color: var(--text-muted);
    margin-bottom: 40px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 40px;
}

.contact-detail-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-detail-icon {
    background-color: var(--bg-card);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
}

.contact-detail-text h4 {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.contact-detail-text p {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 0;
}

.contact-form-card {
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px;
}

.contact-form-group {
    margin-bottom: 24px;
}

.contact-form-group label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.contact-input {
    width: 100%;
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
}

.contact-input:focus {
    border-color: var(--text-primary);
}

.contact-textarea {
    width: 100%;
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    height: 120px;
    resize: vertical;
}

.contact-textarea:focus {
    border-color: var(--text-primary);
}

/* 10. Print Styles for Fueling Calculator */
@media print {
    body {
        background: #FFFFFF !important;
        color: #000000 !important;
        font-size: 12pt;
    }
    
    .site-header,
    .site-footer,
    .calc-sidebar,
    .calc-welcome,
    .recommended-products-box,
    .notes-box,
    #btnCopyPlan,
    #btnPrintPlan,
    #cartOverlay,
    #cartDrawer,
    #checkoutOverlay,
    .mobile-menu,
    #mobileMenu {
        display: none !important;
    }
    
    .calc-layout {
        display: block !important;
    }
    
    .calc-results {
        border: none !important;
        background: transparent !important;
        padding: 0 !important;
        margin: 0 !important;
        width: 100% !important;
    }
    
    .results-header h3 {
        font-size: 24pt !important;
        margin-top: 0;
    }
    
    .results-grid {
        grid-template-columns: repeat(4, 1fr) !important;
        gap: 10px !important;
        margin-bottom: 30px !important;
    }
    
    .result-stat {
        background: #F4F4F4 !important;
        border: 1px solid #DDDDDD !important;
        padding: 10px !important;
        border-radius: 8px !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    
    .result-stat-val {
        font-size: 18pt !important;
    }
    
    .timeline {
        border-left: 2px solid #000000 !important;
        margin-left: 10px !important;
        padding-left: 20px !important;
    }
    
    .timeline-dot {
        border-color: #FFFFFF !important;
        print-color-adjust: exact;
        -webkit-print-color-adjust: exact;
    }
    
    .timeline-dot.sunrise { background-color: #FFA34F !important; }
    .timeline-dot.strike { background-color: #E76F51 !important; }
    .timeline-dot.sunset { background-color: #8B5CF6 !important; }
    
    .timeline-content {
        background: #F9F9F9 !important;
        border: 1px solid #EEEEEE !important;
        padding: 10px 15px !important;
        display: block !important;
        print-color-adjust: exact;
        -webkit-print-color-adjust: exact;
    }
    
    .timeline-product-tag {
        display: inline-block !important;
        margin-bottom: 5px !important;
        border: 1px solid #000000 !important;
        padding: 2px 6px !important;
    }
    
    .timeline-product-tag.sunrise { background: #FFE29A !important; color: #000000 !important; }
    .timeline-product-tag.strike { background: #FF6B6B !important; color: #FFFFFF !important; }
    .timeline-product-tag.sunset { background: #7C3AED !important; color: #FFFFFF !important; }
}