/* Base Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: #1a1a1a;
    background-color: #fafafa;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Container */
.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 30px;
}

/* Header Navigation */
.header {
    background-color: #fff;
    border-bottom: 1px solid #eaeaea;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    position: relative;
    z-index: 100;
}

.logo img {
    height: 45px;
    width: auto;
    display: block;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-list a {
    font-size: 14px;
    font-weight: 500;
    color: #2c3e50;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

.nav-list a:hover {
    color: #c9a227;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.hamburger-line {
    width: 100%;
    height: 3px;
    background-color: #2c3e50;
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    z-index: 999;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.3s ease;
    opacity: 0;
}

.mobile-menu.active {
    max-height: 400px;
    opacity: 1;
}

.mobile-nav-list {
    list-style: none;
    padding: 20px 30px;
}

.mobile-nav-list li {
    border-bottom: 1px solid #eee;
}

.mobile-nav-list li:last-child {
    border-bottom: none;
}

.mobile-nav-list a {
    display: block;
    padding: 18px 0;
    font-size: 16px;
    font-weight: 500;
    color: #2c3e50;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s ease, padding-left 0.3s ease;
}

.mobile-nav-list a:hover {
    color: #c9a227;
    padding-left: 10px;
}

/* Section Base */
.section {
    padding: 100px 0;
}

.section-main-title {
    font-size: 36px;
    font-weight: 300;
    color: #222;
    margin-bottom: 60px;
    letter-spacing: 2px;
    text-align: center;
}

/* Style 1: Product Overview - Warm Beige Gradient */
.section-overview {
    background: linear-gradient(135deg, #faf8f5 0%, #f5f0e8 50%, #efe8dc 100%);
}

.text-block-style-1 {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.overview-text {
    font-size: 18px;
    color: #4a5568;
    line-height: 1.9;
    margin-bottom: 40px;
}

.model-types {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
}

.model-type-tag {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 12px 24px;
    border-radius: 30px;
    font-size: 14px;
    font-weight: 600;
    color: #2c3e50;
    border: 2px solid #c9a227;
    transition: all 0.3s ease;
}

.model-type-tag:hover {
    background-color: #c9a227;
    color: #fff;
}

/* Style 2: Medium Duty Models - Soft Blue Gradient */
.section-medium {
    background: linear-gradient(135deg, #f0f7ff 0%, #e8f4f8 50%, #e0f0f5 100%);
}

.text-block-style-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.model-card-large {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 40px;
    border-radius: 8px;
    border-left: 4px solid #3498db;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.model-card-large:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

/* Hot Sale Badge */
.hot-badge {
    position: absolute;
    top: 20px;
    right: -35px;
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a5a 50%, #d63031 100%);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 8px 40px;
    transform: rotate(45deg);
    box-shadow: 0 3px 10px rgba(214, 48, 49, 0.3);
    z-index: 10;
}

/* Hot Sale Card Special Style */
.model-card-hot {
    background: linear-gradient(135deg, #fff9f0 0%, #fff5e6 50%, #ffecd2 100%);
    border: 2px solid #ff9f43;
    border-left: 4px solid #ff6b6b;
    box-shadow: 0 5px 20px rgba(255, 159, 67, 0.15);
}

.model-card-hot:hover {
    box-shadow: 0 15px 40px rgba(255, 159, 67, 0.25);
}

.model-card-hot .model-category {
    color: #e17055;
}

.model-card-hot .model-name {
    background: linear-gradient(135deg, #d63031 0%, #e17055 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.model-header {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 2px solid #eee;
}

.model-category {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: #3498db;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.model-name {
    font-size: 28px;
    font-weight: 600;
    color: #222;
}

.model-desc {
    font-size: 16px;
    color: #5a6c7d;
    margin-bottom: 25px;
    line-height: 1.7;
}

.spec-table {
    width: 100%;
    border-collapse: collapse;
}

.spec-table tr {
    border-bottom: 1px solid #eee;
}

.spec-table tr:last-child {
    border-bottom: none;
}

.spec-table td {
    padding: 14px 0;
    font-size: 15px;
}

.spec-table td:first-child {
    color: #5a6c7d;
    width: 55%;
}

.spec-table td:last-child {
    color: #1a1a1a;
    font-weight: 600;
    text-align: right;
}

.excavator-info {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 2px solid #eee;
}

.excavator-label {
    font-size: 13px;
    color: #5a6c7d;
    margin-bottom: 8px;
}

.excavator-value {
    font-size: 15px;
    color: #1a1a1a;
    font-weight: 500;
}

/* Style 3: Heavy Duty Models - Soft Sage Green Gradient */
.section-heavy {
    background: linear-gradient(135deg, #f5f8f5 0%, #eef3ee 50%, #e6ede6 100%);
}

.text-block-style-3 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.model-card-heavy {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 35px;
    border-radius: 8px;
    border-top: 4px solid #27ae60;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.model-card-heavy:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.model-card-heavy .model-category {
    color: #27ae60;
}

.model-card-heavy .model-name {
    font-size: 24px;
}

/* Hot Sale Card for Heavy Duty */
.model-card-heavy-hot {
    background: linear-gradient(135deg, #fff9f0 0%, #fff5e6 50%, #ffecd2 100%);
    border: 2px solid #ff9f43;
    border-top: 4px solid #ff6b6b;
    box-shadow: 0 5px 20px rgba(255, 159, 67, 0.15);
}

.model-card-heavy-hot:hover {
    box-shadow: 0 15px 40px rgba(255, 159, 67, 0.25);
}

.model-card-heavy-hot .model-category {
    color: #e17055;
}

.model-card-heavy-hot .model-name {
    background: linear-gradient(135deg, #d63031 0%, #e17055 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Style 4: Super Heavy Duty - Soft Lavender Gradient */
.section-super {
    background: linear-gradient(135deg, #f8f6fb 0%, #f3f0f7 50%, #ede9f3 100%);
}

.text-block-style-4 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 50px;
}

.model-card-super {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 45px;
    border-radius: 8px;
    border: 2px solid #9b59b6;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.model-card-super:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
}

.model-card-super .model-category {
    color: #9b59b6;
    font-size: 13px;
}

.model-card-super .model-name {
    font-size: 32px;
}

.model-card-super .model-desc {
    font-size: 17px;
}

.model-card-super .spec-table td {
    font-size: 16px;
    padding: 16px 0;
}

/* Style 5: Applications - Soft Peach/Coral Gradient */
.section-applications {
    background: linear-gradient(135deg, #fdf8f5 0%, #f9f2ec 50%, #f5ebe3 100%);
}

.text-block-style-5 {
    max-width: 1000px;
    margin: 0 auto;
}

.app-intro {
    text-align: center;
    margin-bottom: 50px;
}

.app-intro p {
    font-size: 17px;
    color: #4a5568;
    line-height: 1.9;
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.app-card {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 35px 30px;
    text-align: center;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.app-icon {
    width: 60px;
    height: 60px;
    background-color: #e67e22;
    color: #fff;
    font-size: 24px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    border-radius: 50%;
}

.app-card h4 {
    font-size: 18px;
    font-weight: 600;
    color: #222;
    margin-bottom: 12px;
}

.app-card p {
    font-size: 15px;
    color: #5a6c7d;
    line-height: 1.7;
}

/* Style 6: Features - Soft Mint Gradient */
.section-features {
    background: linear-gradient(135deg, #f5faf8 0%, #eef6f2 50%, #e6f2ec 100%);
}

.text-block-style-6 {
    max-width: 900px;
    margin: 0 auto;
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.feature-item {
    background-color: rgba(255, 255, 255, 0.9);
    padding: 30px 40px;
    border-radius: 8px;
    border-left: 4px solid #1abc9c;
    display: flex;
    align-items: flex-start;
    gap: 25px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateX(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.feature-number {
    font-size: 36px;
    font-weight: 200;
    color: #1abc9c;
    line-height: 1;
    min-width: 50px;
}

.feature-content h4 {
    font-size: 18px;
    font-weight: 600;
    color: #222;
    margin-bottom: 8px;
}

.feature-content p {
    font-size: 15px;
    color: #5a6c7d;
    line-height: 1.7;
}

/* Style 7: Contact - Soft Gray-Blue Gradient */
.section-contact {
    background: linear-gradient(135deg, #f5f7fa 0%, #e8ecf1 50%, #e0e6ed 100%);
}

.text-block-style-7 {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-text {
    margin-bottom: 40px;
}

.contact-text h2 {
    font-size: 32px;
    font-weight: 300;
    color: #222;
    margin-bottom: 20px;
}

.contact-text p {
    font-size: 17px;
    color: #4a5568;
    line-height: 1.8;
}

.contact-info-box {
    background-color: rgba(255, 255, 255, 0.95);
    padding: 50px;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.contact-row {
    margin-bottom: 30px;
}

.contact-row:last-child {
    margin-bottom: 0;
}

.contact-type {
    font-size: 13px;
    color: #5a6c7d;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.contact-value {
    font-size: 20px;
    color: #1a1a1a;
    font-weight: 600;
}

.contact-value a {
    color: #c9a227;
    transition: color 0.3s ease;
}

.contact-value a:hover {
    color: #a88420;
}

/* Footer - Blue Gradient Background */
.footer {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 50%, #90caf9 100%);
    color: #000;
    padding: 60px 0 30px;
}

.footer-content {
    text-align: center;
}

.footer-content p {
    font-size: 16px;
    color: #000;
    margin-bottom: 15px;
}

.footer-content p:last-child {
    margin-bottom: 0;
    font-size: 14px;
    color: #1565c0;
}

/* Responsive - Tablet */
@media screen and (max-width: 1024px) {
    .text-block-style-2,
    .text-block-style-3,
    .text-block-style-4 {
        grid-template-columns: 1fr;
    }
    
    .app-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Responsive - Mobile */
@media screen and (max-width: 768px) {
    .header-container {
        flex-direction: row;
        height: 70px;
        padding: 0 20px;
    }
    
    .nav {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-main-title {
        font-size: 26px;
        margin-bottom: 40px;
    }
    
    .overview-text {
        font-size: 16px;
    }
    
    .model-types {
        gap: 10px;
    }
    
    .model-type-tag {
        padding: 10px 18px;
        font-size: 13px;
    }
    
    .model-card-large,
    .model-card-heavy,
    .model-card-super {
        padding: 30px;
    }
    
    .model-name {
        font-size: 22px;
    }
    
    .model-card-super .model-name {
        font-size: 26px;
    }
    
    .spec-table td {
        font-size: 14px;
        padding: 12px 0;
    }
    
    .app-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-item {
        flex-direction: column;
        gap: 15px;
        padding: 25px;
    }
    
    .contact-info-box {
        padding: 30px;
    }
    
    .contact-value {
        font-size: 18px;
    }
}

/* Responsive - Small Mobile */
@media screen and (max-width: 480px) {
    .container {
        padding: 0 20px;
    }
    
    .section-main-title {
        font-size: 24px;
    }
    
    .model-card-large,
    .model-card-heavy,
    .model-card-super {
        padding: 25px;
    }
    
    .model-name {
        font-size: 20px;
    }
}