/* ========================================
   GLOBAL STYLES & RESET
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a5490;
    --secondary-color: #2c7cc1;
    --accent-color: #ff6b35;
    --dark-color: #1a1a1a;
    --darker-color: #0f0f0f;
    --light-color: #e8ecf1;
    --lighter-color: #f0f3f7;
    --text-color: #2d3748;
    --text-light: #718096;
    --border-color: #d1d9e3;
    --card-bg: #ffffff;
    --shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 5px 25px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--light-color);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

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

ul {
    list-style: none;
}

/* ========================================
   NAVIGATION
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(26, 26, 26, 0.98);
    box-shadow: 0 2px 25px rgba(0, 0, 0, 0.4);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #ffffff;
}

.logo span {
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

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

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

.nav-link:hover,
.nav-link.active {
    color: #ffffff;
}

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

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

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('img/pvc1.jpg') center/cover no-repeat;
    opacity: 0.7;
    animation: zoomIn 20s infinite alternate;
}

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

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 84, 144, 0.35) 0%, rgba(44, 124, 193, 0.25) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    padding: 2rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero-title .highlight {
    color: var(--accent-color);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.scroll-indicator i {
    font-size: 2rem;
    color: white;
}

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

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: #ff5722;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 107, 53, 0.3);
}

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

.btn-secondary:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* ========================================
   SECTION HEADERS
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.section-divider {
    width: 80px;
    height: 4px;
    background: var(--accent-color);
    margin: 0 auto 1.5rem;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
}

/* ========================================
   ABOUT SECTION
   ======================================== */
.about {
    padding: 6rem 0;
    background: var(--light-color);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.feature-item i {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-top: 0.2rem;
}

.feature-item h4 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.feature-item p {
    font-size: 1rem;
    color: var(--text-light);
    margin: 0;
}

.about-image {
    position: relative;
}

.about-image img {
    border-radius: 15px;
    box-shadow: var(--shadow-hover);
}

.about-stats {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: linear-gradient(135deg, rgba(26, 84, 144, 0.65), rgba(44, 124, 193, 0.65));
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow-hover);
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem 2rem;
    min-width: 320px;
    backdrop-filter: blur(5px);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.7);
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 0.3rem;
    line-height: 1.3;
}

/* ========================================
   SERVICES SECTION
   ======================================== */
.services {
    padding: 6rem 0;
    background: var(--lighter-color);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--card-bg);
    border: 2px solid transparent;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.service-icon i {
    font-size: 2rem;
    color: white;
}

.service-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.service-card > p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.service-features {
    text-align: left;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 2px solid var(--border-color);
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
    color: var(--text-color);
}

.service-features i {
    color: var(--accent-color);
}

/* ========================================
   PRODUCTS SECTION
   ======================================== */
.products {
    padding: 6rem 0;
    background: var(--light-color);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.product-card {
    background: var(--card-bg);
    border: 2px solid transparent;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

.product-image {
    position: relative;
    overflow: hidden;
    height: 300px;
}

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

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

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 84, 144, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.btn-view {
    padding: 0.8rem 2rem;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-view:hover {
    background: #ff5722;
    transform: scale(1.05);
}

.product-info {
    padding: 1.5rem;
}

.product-info h3 {
    font-size: 1.3rem;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
}

.product-info p {
    color: var(--text-light);
}

/* ========================================
   GALLERY SECTION
   ======================================== */
.gallery {
    padding: 6rem 0;
    background: var(--lighter-color);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 15px;
    cursor: pointer;
    height: 300px;
}

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

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

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 2rem 1.5rem 1.5rem;
    transform: translateY(100%);
    transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
    transform: translateY(0);
}

.gallery-overlay h4 {
    color: white;
    font-size: 1.2rem;
}

.gallery-more-container {
    display: none;
    text-align: center;
    margin-top: 2rem;
}

.gallery-more-btn {
    padding: 1rem 2.5rem;
}

/* ========================================
   CALCULATOR SECTION
   ======================================== */
.calculator {
    padding: 6rem 0;
    background: var(--light-color);
}

.calculator-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.calculator-form {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.form-control {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
    background: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.btn-calculate {
    width: 100%;
    padding: 1.2rem;
    font-size: 1.1rem;
    margin-top: 1rem;
}

.btn-calculate i {
    margin-right: 0.5rem;
}

.calculator-result {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow-hover);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 400px;
}

.result-placeholder {
    text-align: center;
    opacity: 0.8;
}

.result-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.6;
}

.result-placeholder p {
    font-size: 1.2rem;
    margin: 0;
}

.price-breakdown {
    width: 100%;
}

.price-breakdown h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 1.1rem;
}

.breakdown-item:last-child {
    border-bottom: none;
    font-size: 1.3rem;
    font-weight: 700;
    padding-top: 1.5rem;
    margin-top: 1rem;
    border-top: 2px solid rgba(255, 255, 255, 0.3);
}

.breakdown-item strong {
    font-weight: 600;
}

.price-total {
    font-size: 2.5rem !important;
    color: var(--accent-color);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.calculator-note {
    background: rgba(255, 107, 53, 0.1);
    border-left: 4px solid var(--accent-color);
    padding: 1.5rem;
    border-radius: 10px;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.calculator-note i {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-top: 0.2rem;
}

.calculator-note p {
    margin: 0;
    color: var(--text-color);
    line-height: 1.6;
}

/* ========================================
   FAQ SECTION
   ======================================== */
.faq {
    padding: 6rem 0;
    background: var(--lighter-color);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--card-bg);
    margin-bottom: 1.5rem;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-hover);
}

.faq-question {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--light-color);
}

.faq-question h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin: 0;
    flex: 1;
}

.faq-question i {
    font-size: 1.2rem;
    color: var(--accent-color);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 2rem;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 0 2rem 1.5rem 2rem;
}

.faq-answer p {
    color: var(--text-light);
    line-height: 1.8;
    margin: 0;
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.contact {
    padding: 6rem 0;
    background: var(--light-color);
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.contact-item i {
    font-size: 2rem;
    color: var(--accent-color);
    margin-top: 0.5rem;
}

.contact-item h4 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--text-light);
    margin: 0.3rem 0;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.footer-section h3 span {
    color: var(--accent-color);
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.footer-section p {
    color: #aaa;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: #aaa;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.footer-section ul li i {
    color: var(--accent-color);
    margin-right: 0.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--accent-color);
    transform: translateY(-5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #aaa;
}

/* ========================================
   MODAL
   ======================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--lighter-color);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    border-radius: 15px;
    position: relative;
    padding: 3rem;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--accent-color);
    transform: rotate(90deg);
}

/* ========================================
   BACK TO TOP BUTTON
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-color);
    transform: translateY(-5px);
}

/* ========================================
   VIBER FLOATING BUTTON
   ======================================== */
.viber-float {
    position: fixed;
    bottom: 180px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #7360F2;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 20px rgba(115, 96, 242, 0.4);
    z-index: 998;
    transition: var(--transition);
    animation: pulseViber 2s infinite;
}

.viber-float:hover {
    background: #5a4bbf;
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(115, 96, 242, 0.6);
}

@keyframes pulseViber {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(115, 96, 242, 0.4);
    }
    50% {
        box-shadow: 0 4px 30px rgba(115, 96, 242, 0.7);
    }
}

/* ========================================
   WHATSAPP FLOATING BUTTON
   ======================================== */
.whatsapp-float {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: #25D366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 998;
    transition: var(--transition);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    background: #128C7E;
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    }
    50% {
        box-shadow: 0 4px 30px rgba(37, 211, 102, 0.7);
    }
}

/* ========================================
   LIGHTBOX
   ======================================== */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 3000;
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 90%;
    max-height: 90%;
    position: relative;
    animation: lightboxZoom 0.3s ease;
}

@keyframes lightboxZoom {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
    border-radius: 10px;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
    text-align: center;
    color: white;
    font-size: 1.2rem;
    margin-top: 1rem;
    padding: 0.5rem;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 40px;
    font-size: 3rem;
    color: white;
    cursor: pointer;
    z-index: 3001;
    transition: var(--transition);
    user-select: none;
}

.lightbox-close:hover {
    color: var(--accent-color);
    transform: rotate(90deg);
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: none;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    z-index: 3001;
}

.lightbox-prev {
    left: 40px;
}

.lightbox-next {
    right: 40px;
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background: var(--accent-color);
    transform: translateY(-50%) scale(1.1);
}

/* ========================================
   LOADING SCREEN
   ======================================== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    text-align: center;
    color: white;
}

.loader-circle {
    width: 80px;
    height: 80px;
    border: 5px solid rgba(255, 255, 255, 0.2);
    border-top: 5px solid var(--accent-color);
    border-radius: 50%;
    margin: 0 auto 2rem;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loader h2 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.loader h2 span {
    color: var(--accent-color);
}

.loader p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* ========================================
   SCROLL PROGRESS BAR
   ======================================== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--accent-color);
    width: 0%;
    z-index: 9998;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px var(--accent-color);
}

/* ========================================
   STICKY CTA BUTTON
   ======================================== */
.sticky-cta {
    position: fixed;
    left: 30px;
    bottom: 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    box-shadow: 0 4px 20px rgba(26, 84, 144, 0.4);
    z-index: 997;
    transition: var(--transition);
    font-weight: 600;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.sticky-cta.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.sticky-cta:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 30px rgba(26, 84, 144, 0.6);
}

.sticky-cta i {
    font-size: 1.3rem;
}

.sticky-cta span {
    font-size: 1rem;
}

/* ========================================
   PHONE LINK STYLING
   ======================================== */
.phone-link {
    color: inherit;
    transition: var(--transition);
}

.phone-link:hover {
    color: var(--accent-color);
}

/* ========================================
   EMAIL LINK STYLING
   ======================================== */
.email-link {
    color: inherit;
    transition: var(--transition);
}

.email-link:hover {
    color: var(--accent-color);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Tablet and Mobile Optimization */
@media (max-width: 1024px) {
    .container {
        padding: 0 15px;
    }

    .section-title {
        font-size: 2.2rem;
    }
}

@media (max-width: 768px) {
    /* Better touch targets for mobile */
    .btn {
        min-height: 44px;
        min-width: 44px;
    }

    .nav-link {
        padding: 1rem 0;
        font-size: 1.1rem;
    }

    .hamburger {
        display: flex;
        padding: 10px;
        min-width: 44px;
        min-height: 44px;
        justify-content: center;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: rgba(26, 26, 26, 0.98);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow);
        transition: var(--transition);
        gap: 0.5rem;
        max-height: calc(100vh - 70px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .about-stats {
        position: static;
        margin-top: 2rem;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .services-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }

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

    .gallery-item-hidden {
        display: none;
    }

    .gallery-more-container {
        display: block;
    }

    .calculator-wrapper {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .sticky-cta {
        left: 50%;
        transform: translateX(-50%) translateY(20px);
        bottom: 100px;
    }

    .sticky-cta.visible {
        transform: translateX(-50%) translateY(0);
    }

    .sticky-cta:hover {
        transform: translateX(-50%) translateY(-5px);
    }

    .section-title {
        font-size: 2rem;
    }

    .modal-content {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .about-text h3 {
        font-size: 1.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    /* Mobile-specific improvements */
    .viber-float {
        width: 55px;
        height: 55px;
        font-size: 1.8rem;
        bottom: 160px;
        right: 20px;
    }

    .whatsapp-float {
        width: 55px;
        height: 55px;
        font-size: 1.8rem;
        bottom: 90px;
        right: 20px;
    }

    .back-to-top {
        width: 45px;
        height: 45px;
        right: 20px;
        bottom: 20px;
    }

    /* Improve form controls on mobile */
    .form-control {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 1rem 1.2rem;
    }

    select.form-control {
        font-size: 16px;
    }

    /* Better spacing for mobile */
    section {
        padding: 4rem 0 !important;
    }

    /* Optimize images for mobile */
    img {
        max-width: 100%;
        height: auto;
    }

    /* Better modal experience on mobile */
    .modal-content {
        max-height: 90vh;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    /* Lightbox mobile optimization */
    .lightbox-prev,
    .lightbox-next {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }

    .lightbox-prev {
        left: 10px;
    }

    .lightbox-next {
        right: 10px;
    }

    .lightbox-close {
        right: 20px;
        font-size: 2.5rem;
    }

    /* FAQ mobile optimization */
    .faq-question {
        padding: 1.2rem 1.5rem;
    }

    .faq-question h3 {
        font-size: 1.05rem;
        line-height: 1.4;
    }

    /* Contact items stack on mobile */
    .contact-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 1rem;
    }

    /* Calculator mobile improvements */
    .calculator-result {
        min-height: 300px;
    }

    .price-breakdown h3 {
        font-size: 1.5rem;
    }

    .breakdown-item {
        font-size: 1rem;
        flex-wrap: wrap;
    }

    .price-total {
        font-size: 2rem !important;
    }

    /* Product and service cards */
    .service-card,
    .product-card {
        margin-bottom: 1rem;
    }

    /* Gallery optimization */
    .gallery-item {
        height: 250px;
    }
}

/* Small mobile devices */
@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .about-text h3 {
        font-size: 1.5rem;
    }

    /* Sticky CTA mobile */
    .sticky-cta span {
        font-size: 0.9rem;
    }

    .sticky-cta i {
        font-size: 1.1rem;
    }

    /* Better readability on small screens */
    body {
        font-size: 15px;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    /* Reduce padding on very small screens */
    section {
        padding: 3rem 0 !important;
    }

    .calculator-form,
    .service-card,
    .product-card {
        padding: 1.5rem;
    }

    /* Optimize stats display */
    .about-stats {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
        padding: 1.5rem;
        min-width: auto;
        width: 100%;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .stat-label {
        font-size: 0.8rem;
    }
}

/* Landscape mobile optimization */
@media (max-width: 900px) and (orientation: landscape) {
    .hero {
        height: auto;
        min-height: 100vh;
        padding: 100px 0 50px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .about-stats {
        position: static;
        margin-top: 2rem;
    }
}

/* High DPI displays optimization */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    /* Sharper borders and shadows on retina displays */
    .btn,
    .form-control,
    .service-card,
    .product-card {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* Prevent text size adjust on device orientation change */
@media screen and (orientation: portrait) {
    html {
        -webkit-text-size-adjust: 100%;
        text-size-adjust: 100%;
    }
}

@media screen and (orientation: landscape) {
    html {
        -webkit-text-size-adjust: 100%;
        text-size-adjust: 100%;
    }
}