/* ====================================
   CAT® 333 - 333.cat Website Styles
   Excavadora Hidràulica Caterpillar
   ==================================== */

/* CSS Variables */
:root {
    /* CAT Colors */
    --cat-yellow: #FFCD11;
    --cat-black: #1a1a1a;
    --cat-dark-gray: #2d2d2d;
    --cat-gray: #444444;
    --cat-light-gray: #f5f5f5;
    --white: #ffffff;
    
    /* Accent Colors */
    --accent-orange: #FF6600;
    --accent-blue: #0066CC;
    --success-green: #28a745;
    
    /* Gradients */
    --gradient-hero: linear-gradient(135deg, rgba(26, 26, 26, 0.95) 0%, rgba(45, 45, 45, 0.85) 100%);
    --gradient-dark: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    --gradient-yellow: linear-gradient(135deg, #FFCD11 0%, #FFB700 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.25);
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Spacing */
    --container-max: 1200px;
    --section-padding: 80px 0;
}

/* ====================================
   Global Reset & Base Styles
   ==================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    color: var(--cat-dark-gray);
    background: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

/* ====================================
   Navigation
   ==================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.navbar.scrolled {
    padding: 10px 0;
    box-shadow: var(--shadow-lg);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--cat-yellow);
    letter-spacing: -0.5px;
}

.nav-brand sup {
    font-size: 0.7em;
    font-weight: 600;
}

.nav-menu {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-link {
    color: var(--white);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 5px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--cat-yellow);
    transition: var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--cat-yellow);
    transition: var(--transition-normal);
    border-radius: 3px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

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

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

/* ====================================
   Hero Section
   ==================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    animation: zoomIn 20s ease-out infinite alternate;
}

@keyframes zoomIn {
    0% { transform: scale(1); }
    100% { transform: scale(1.1); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-hero);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    margin-bottom: 20px;
    line-height: 1.1;
    letter-spacing: -2px;
}

.cat-logo {
    color: var(--cat-yellow);
    text-shadow: 0 4px 20px rgba(255, 205, 17, 0.5);
}

.cat-logo sup {
    font-size: 0.4em;
    font-weight: 700;
}

.hero-subtitle {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--cat-yellow);
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    max-width: 700px;
    margin: 0 auto 40px;
    font-weight: 400;
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.hero-scroll a {
    color: var(--cat-yellow);
    font-size: 2rem;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ====================================
   Buttons
   ==================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition-normal);
    cursor: pointer;
}

.btn-primary {
    background: var(--gradient-yellow);
    color: var(--cat-black);
    box-shadow: 0 4px 15px rgba(255, 205, 17, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 205, 17, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--cat-black);
    transform: translateY(-2px);
}

/* ====================================
   Section Styles
   ==================================== */
section {
    padding: var(--section-padding);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--cat-yellow);
    color: var(--cat-black);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-badge.light {
    background: var(--white);
    color: var(--cat-black);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
    color: var(--cat-black);
}

.section-title.light {
    color: var(--white);
}

.section-description {
    font-size: 1.125rem;
    color: var(--cat-gray);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

.section-description.light {
    color: rgba(255, 255, 255, 0.9);
}

/* ====================================
   Intro Section
   ==================================== */
.intro {
    background: var(--cat-light-gray);
}

.intro-content {
    max-width: 900px;
    margin: 0 auto;
}

.intro-text p {
    font-size: 1.125rem;
    margin-bottom: 20px;
    line-height: 1.8;
}

.intro-text .lead {
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--cat-black);
}

/* ====================================
   Stats Section
   ==================================== */
.stats {
    background: var(--gradient-dark);
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.stat-card {
    text-align: center;
    padding: 40px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: var(--shadow-xl);
}

.stat-icon {
    font-size: 3rem;
    color: var(--cat-yellow);
    margin-bottom: 20px;
}

.stat-number {
    font-size: 4rem;
    font-weight: 900;
    color: var(--cat-yellow);
    line-height: 1;
    margin-bottom: 5px;
}

.stat-unit {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: 500;
}

/* ====================================
   Features Section
   ==================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--cat-yellow);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-yellow);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--cat-black);
    margin-bottom: 20px;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--cat-black);
}

.feature-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--cat-gray);
    margin-bottom: 20px;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--cat-dark-gray);
}

.feature-list i {
    color: var(--success-green);
    font-size: 1rem;
}

/* ====================================
   Specifications Section
   ==================================== */
.specs {
    background: var(--cat-light-gray);
}

.specs-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.spec-section {
    background: var(--white);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.spec-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 3px solid var(--cat-yellow);
}

.spec-header i {
    font-size: 2rem;
    color: var(--cat-yellow);
}

.spec-header h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--cat-black);
}

.spec-note {
    font-size: 0.9rem;
    color: var(--cat-gray);
    font-style: italic;
    margin: 0;
}

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

.spec-table tr {
    border-bottom: 1px solid #e0e0e0;
}

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

.spec-table tr:nth-child(even) {
    background: rgba(255, 205, 17, 0.05);
}

.spec-table td {
    padding: 15px 20px;
}

.spec-label {
    font-weight: 600;
    color: var(--cat-dark-gray);
    width: 50%;
}

.spec-value {
    color: var(--cat-gray);
    font-weight: 500;
}

.spec-value strong {
    color: var(--cat-black);
    font-weight: 700;
}

/* ====================================
   Technology Section
   ==================================== */
.technology {
    background: var(--gradient-dark);
    color: var(--white);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.tech-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    transition: var(--transition-normal);
}

.tech-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.tech-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-yellow);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--cat-black);
    margin-bottom: 20px;
}

.tech-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--cat-yellow);
}

.tech-description {
    font-size: 1rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
}

.tech-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tech-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.85);
}

.tech-features i {
    color: var(--cat-yellow);
    font-size: 1rem;
}

/* ====================================
   Applications Section
   ==================================== */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.application-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.application-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.application-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

.application-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.application-card:hover .application-image img {
    transform: scale(1.1);
}

.application-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--cat-yellow);
}

.application-content {
    padding: 30px;
}

.application-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--cat-black);
}

.application-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--cat-gray);
    margin-bottom: 20px;
}

.application-uses {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.application-uses li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--cat-dark-gray);
}

.application-uses i {
    color: var(--cat-yellow);
}

/* ====================================
   Configuration Section
   ==================================== */
.configuration {
    background: var(--cat-light-gray);
}

.config-sections {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.config-section {
    background: var(--white);
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.config-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 3px solid var(--cat-yellow);
}

.config-header i {
    font-size: 2rem;
    color: var(--cat-yellow);
}

.config-header h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--cat-black);
}

.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.config-grid.two-col {
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
}

.config-grid.three-col {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.config-option {
    padding: 25px;
    background: var(--cat-light-gray);
    border-radius: 15px;
    border: 2px solid transparent;
    transition: var(--transition-normal);
}

.config-option:hover {
    border-color: var(--cat-yellow);
    background: var(--white);
}

.config-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-yellow);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--cat-black);
    margin-bottom: 15px;
}

.config-option h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--cat-black);
}

.config-spec {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--cat-yellow);
    margin-bottom: 10px;
}

.config-option p {
    font-size: 0.95rem;
    color: var(--cat-gray);
    line-height: 1.6;
}

/* ====================================
   Video Section
   ==================================== */
.video-section {
    background: var(--cat-light-gray);
}

.video-container {
    max-width: 1000px;
    margin: 0 auto;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    height: 0;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* ====================================
   Gallery Section
   ==================================== */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    height: 300px;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 26, 26, 0.7);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay i {
    font-size: 3rem;
    color: var(--cat-yellow);
    margin-bottom: 10px;
}

.gallery-overlay p {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
}

/* Gallery Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    animation: fadeIn var(--transition-normal);
}

.modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 90%;
    animation: zoomIn var(--transition-normal);
}

.modal-close {
    position: absolute;
    top: 30px;
    right: 50px;
    color: var(--white);
    font-size: 50px;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal-close:hover {
    color: var(--cat-yellow);
}

.modal-caption {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 700px;
    text-align: center;
    color: var(--white);
    padding: 20px 0;
    font-size: 1.2rem;
}

/* ====================================
   Comparison Section
   ==================================== */
.comparison {
    background: var(--cat-light-gray);
}

.comparison-table-wrapper {
    overflow-x: auto;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.comparison-table {
    width: 100%;
    background: var(--white);
    border-collapse: collapse;
    min-width: 800px;
}

.comparison-table thead {
    background: var(--gradient-dark);
}

.comparison-table th {
    padding: 20px;
    text-align: left;
    color: var(--white);
    font-weight: 700;
    font-size: 1.1rem;
}

.comparison-table th.highlight {
    background: var(--cat-yellow);
    color: var(--cat-black);
}

.comparison-table tbody tr {
    border-bottom: 1px solid #e0e0e0;
}

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

.comparison-table tbody tr:hover {
    background: rgba(255, 205, 17, 0.05);
}

.comparison-table td {
    padding: 20px;
}

.comparison-table td.highlight {
    background: rgba(255, 205, 17, 0.1);
    font-weight: 600;
}

.comparison-table td.feature-name {
    font-weight: 600;
    color: var(--cat-black);
}

.comparison-table td.feature-name i {
    color: var(--cat-yellow);
    margin-right: 8px;
}

.brand-badge {
    padding: 6px 15px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 700;
    display: inline-block;
}

.brand-badge.cat {
    background: var(--cat-black);
    color: var(--cat-yellow);
}

.tech-badge {
    display: inline-block;
    padding: 4px 12px;
    background: var(--cat-yellow);
    color: var(--cat-black);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin: 2px;
}

.comparison-summary {
    margin-top: 40px;
}

.summary-card {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.summary-card.advantage {
    border: 3px solid var(--cat-yellow);
}

.summary-card i {
    font-size: 3rem;
    color: var(--cat-yellow);
    margin-bottom: 20px;
}

.summary-card h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--cat-black);
}

.summary-card ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.summary-card li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.05rem;
}

.summary-card li i {
    font-size: 1.2rem;
    color: var(--success-green);
    margin: 0;
}

/* ====================================
   Maintenance Section
   ==================================== */
.maintenance {
    background: var(--gradient-dark);
    color: var(--white);
}

.maintenance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.maintenance-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
    transition: var(--transition-normal);
}

.maintenance-card:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-5px);
}

.maintenance-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-yellow);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--cat-black);
    margin-bottom: 20px;
}

.maintenance-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--cat-yellow);
}

.maintenance-description {
    font-size: 1rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 20px;
}

.maintenance-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.maintenance-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.85);
}

.maintenance-list i {
    color: var(--cat-yellow);
    font-size: 1rem;
}

/* ====================================
   Contact Section
   ==================================== */
.contact-content {
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.info-card {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.info-card i {
    font-size: 3rem;
    color: var(--cat-yellow);
    margin-bottom: 20px;
}

.info-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--cat-black);
}

.info-card p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--cat-gray);
    margin-bottom: 20px;
}

.info-card ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.info-card li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    color: var(--cat-dark-gray);
}

.info-card li i {
    font-size: 1rem;
    margin: 0;
}

.contact-disclaimer {
    margin-top: 40px;
}

.disclaimer-box {
    background: rgba(255, 205, 17, 0.1);
    border-left: 4px solid var(--cat-yellow);
    padding: 30px;
    border-radius: 10px;
}

.disclaimer-box i {
    font-size: 2rem;
    color: var(--cat-yellow);
    float: left;
    margin-right: 20px;
}

.disclaimer-box p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--cat-gray);
}

.disclaimer-box a {
    color: var(--accent-blue);
    font-weight: 600;
}

.disclaimer-box a:hover {
    text-decoration: underline;
}

/* ====================================
   Footer
   ==================================== */
.footer {
    background: var(--cat-black);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 2rem;
    font-weight: 900;
    color: var(--cat-yellow);
    margin-bottom: 10px;
}

.footer-brand sup {
    font-size: 0.6em;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

.footer-links h4,
.footer-info h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--cat-yellow);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--cat-yellow);
    padding-left: 5px;
}

.footer-info p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    margin-bottom: 10px;
}

.footer-info i {
    color: var(--cat-yellow);
    margin-right: 8px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 10px;
}

.footer-note {
    font-size: 0.8rem !important;
    color: rgba(255, 255, 255, 0.5) !important;
    max-width: 900px;
    margin: 20px auto 0 !important;
}

/* ====================================
   Scroll to Top Button
   ==================================== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-yellow);
    color: var(--cat-black);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* ====================================
   Animations
   ==================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.animate-fade-in {
    animation: fadeIn 1s ease-out;
}

.animate-fade-in.delay-1 {
    animation-delay: 0.2s;
    animation-fill-mode: backwards;
}

.animate-fade-in.delay-2 {
    animation-delay: 0.4s;
    animation-fill-mode: backwards;
}

.animate-fade-in.delay-3 {
    animation-delay: 0.6s;
    animation-fill-mode: backwards;
}

/* Scroll Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-on-scroll.delay-1 {
    transition-delay: 0.1s;
}

.animate-on-scroll.delay-2 {
    transition-delay: 0.2s;
}

.animate-on-scroll.delay-3 {
    transition-delay: 0.3s;
}

.animate-on-scroll.delay-4 {
    transition-delay: 0.4s;
}

.animate-on-scroll.delay-5 {
    transition-delay: 0.5s;
}

/* ====================================
   Responsive Design
   ==================================== */
@media (max-width: 1024px) {
    .features-grid,
    .tech-grid,
    .applications-grid,
    .maintenance-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    /* Navigation */
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: rgba(26, 26, 26, 0.98);
        width: 100%;
        padding: 30px;
        gap: 20px;
        transition: var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    /* Hero */
    .hero {
        min-height: 600px;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn {
        justify-content: center;
    }
    
    /* Grids */
    .features-grid,
    .tech-grid,
    .applications-grid,
    .maintenance-grid,
    .config-grid,
    .config-grid.two-col,
    .config-grid.three-col,
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .comparison-table-wrapper {
        overflow-x: scroll;
    }
    
    /* Sections */
    section {
        padding: 60px 0;
    }
    
    .section-header {
        margin-bottom: 40px;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 3rem;
    }
    
    .modal-close {
        top: 15px;
        right: 20px;
        font-size: 35px;
    }
    
    .scroll-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .hero-scroll,
    .scroll-top,
    .hamburger {
        display: none;
    }
    
    .hero {
        height: auto;
        min-height: 0;
    }
    
    section {
        break-inside: avoid;
    }
}