:root {
    --primary: #1A1A1A;
    --primary-dark: #000000;
    --primary-light: #E8E8E8;
    --accent: #333333;
    --green-accent: #555555;
    --green-light: #EEEEEE;
    --secondary: #111111;
    --gray-100: #F5F5F5;
    --gray-200: #E0E0E0;
    --gray-300: #CCCCCC;
    --gray-600: #666666;
    --gray-800: #222222;
    --white: #FFFFFF;
    --black: #000000;
    --shadow-sm: 0 4px 12px rgba(0,0,0,0.05);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 35px rgba(0,0,0,0.1);
    --radius-sm: 12px;
    --radius-md: 20px;
    --radius-lg: 28px;
}

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

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background: var(--white);
    color: var(--secondary);
    line-height: 1.5;
    overflow-x: hidden;
}

/* ===== PRELOADER ===== */
.preloader {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--green-accent) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    z-index: 10000;
    transition: opacity 0.5s ease;
}

.preloader-ring {
    width: 60px;
    height: 60px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    animation: preloaderSpin 1s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

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

.preloader-text {
    color: white;
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 3px;
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid var(--gray-300);
    transition: all 0.3s;
}

.navbar-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 32px;
    gap: 32px;
    min-height: 74px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    line-height: 0;
    flex-shrink: 0;
}

.brand-logo {
    height: 70px;
    width: auto;
    transition: height 0.3s ease;
}

.brand-name {
    font-size: 28px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--green-accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
}

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

.nav-link {
    text-decoration: none;
    font-weight: 500;
    color: var(--gray-600);
    transition: color 0.2s;
    font-size: 15px;
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--primary);
}

.contact-phone {
    font-weight: 700;
    color: var(--white);
    padding: 8px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--green-accent) 100%);
    border-radius: 40px;
    transition: all 0.2s;
    font-size: 15px;
    flex-shrink: 0;
    white-space: nowrap;
}

.contact-phone:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

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

.mobile-toggle span {
    width: 25px;
    height: 2px;
    background: var(--secondary);
    transition: 0.3s;
}

/* Responsive Navigation */
@media (max-width: 1200px) {
    .brand-logo { height: 60px; }
    .brand-name { font-size: 24px; }
    .nav-menu { gap: 30px; }
    .nav-link { font-size: 14px; }
    .contact-phone { font-size: 14px; padding: 7px 20px; }
    .navbar-container { padding: 10px 28px; gap: 28px; }
}

@media (max-width: 1000px) {
    .brand-logo { height: 52px; }
    .brand-name { font-size: 22px; }
    .nav-menu { gap: 25px; }
    .nav-link { font-size: 13px; }
    .contact-phone { font-size: 13px; padding: 6px 18px; }
    .navbar-container { padding: 10px 24px; gap: 24px; }
}

@media (max-width: 900px) {
    .brand-logo { height: 48px; }
    .brand-name { font-size: 20px; }
    .nav-menu { gap: 20px; }
    .nav-link { font-size: 12.5px; }
    .contact-phone { font-size: 12.5px; padding: 6px 16px; }
    .navbar-container { padding: 8px 20px; gap: 20px; }
}

@media (max-width: 800px) {
    .brand-logo { height: 44px; }
    .brand-name { font-size: 19px; }
    .nav-menu { gap: 16px; }
    .nav-link { font-size: 12px; }
    .contact-phone { font-size: 12px; padding: 5px 14px; }
    .navbar-container { padding: 8px 18px; gap: 18px; }
}

@media (max-width: 700px) {
    .brand-logo { height: 42px; }
    .brand-name { font-size: 18px; }
    .nav-menu { flex: 1; justify-content: flex-end; gap: 20px; }
    .nav-link { font-size: 13px; }
    .contact-phone { display: none; }
    .navbar-container { padding: 8px 16px; gap: 20px; }
}

@media (max-width: 699px) {
    .nav-menu { display: none !important; }
    .contact-phone { display: none !important; }
    .navbar-container { padding: 20px 20px; justify-content: center; }
    .brand { width: 100%; justify-content: center; gap: 20px; transform: scale(1.2); }
    .brand-logo { height: 70px; }
    .brand-name { font-size: 48px; }
    .navbar { border-radius: 0 0 20px 20px; box-shadow: 0 4px 10px rgba(0,0,0,0.1); border-bottom: none; }
}

@media (max-width: 480px) {
    .navbar-container { padding: 15px 15px; }
    .brand { transform: scale(1); gap: 12px; }
    .brand-logo { height: 55px; }
    .brand-name { font-size: 36px; }
}

@media (max-width: 360px) {
    .brand-logo { height: 48px; }
    .brand-name { font-size: 32px; }
}

/* ===== HERO SECTION ===== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(120deg, #F8F8F8 0%, #EEEEEE 100%);
    overflow: hidden;
    padding: 120px 32px 80px;
}

.hero-bg-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(0,0,0,0.03) 0%, transparent 70%);
}

.hero-container {
    position: relative;
    z-index: 10;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.hero-title {
    font-size: clamp(44px, 8vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 24px;
}

.hero-description {
    font-size: clamp(16px, 2vw, 18px);
    color: var(--gray-600);
    max-width: 600px;
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    padding: 12px 34px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    color: var(--primary);
    cursor: pointer;
    transition: all 0.3s;
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.hero-stats {
    display: flex;
    gap: 48px;
    flex-wrap: wrap;
}

.stat-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 14px;
    color: var(--gray-600);
}

@media (max-width: 699px) {
    .hero-section { padding-top: 130px; }
}

@media (max-width: 480px) {
    .hero-section { padding-top: 110px; }
}

@media (max-width: 360px) {
    .hero-section { padding-top: 100px; }
}

/* ===== SECTIONS COMMON ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
}

.section-title {
    font-size: clamp(32px, 5vw, 44px);
    font-weight: 700;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.2;
    margin-bottom: 48px;
}

.section-title.center {
    text-align: center;
}

/* ===== ABOUT ===== */
.section-about {
    padding: 80px 0;
    background: var(--white);
}

.about-wrapper {
    max-width: 1200px;
    margin: 0 auto;
}

.about-content {
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}

.about-text p {
    color: var(--gray-600);
    margin-bottom: 20px;
    line-height: 1.7;
    font-size: 16px;
}

/* ===== PRODUCTS ===== */
.section-products {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--white) 100%);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 32px;
}

.product-card {
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--green-accent));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.product-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.product-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--secondary);
}

.product-card p {
    color: var(--gray-600);
    line-height: 1.6;
}

/* ===== BENEFITS ===== */
.section-benefits {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--green-light) 100%);
}

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

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.benefit-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-md);
    position: relative;
    transition: all 0.3s;
    border: 1px solid rgba(0,0,0,0.05);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.benefit-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--green-accent);
}

.benefit-number {
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--green-accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
    margin-bottom: 20px;
}

.benefit-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--secondary);
}

.benefit-card p {
    color: var(--gray-600);
    font-size: 15px;
}

/* ===== CONTACT ===== */
.section-contact {
    padding: 80px 0;
    background: var(--white);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--white) 100%);
    border-radius: var(--radius-lg);
    padding: 48px;
    max-width: 1100px;
    margin: 0 auto;
    border: 1px solid rgba(0,0,0,0.05);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.contact-wrapper.visible {
    opacity: 1;
    transform: translateY(0);
}

.contact-info-block {
    text-align: center;
}

.contact-info-block .section-title {
    margin-bottom: 20px;
}

.contact-desc {
    color: var(--gray-600);
    margin-bottom: 32px;
    line-height: 1.6;
}

.contact-details-row {
    display: flex;
    flex-direction: row;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.contact-detail {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--white);
    padding: 20px 28px;
    border-radius: var(--radius-sm);
    width: 100%;
    max-width: 320px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-300);
    transition: all 0.3s;
    flex: 1;
    min-width: 260px;
}

.contact-detail:hover {
    border-color: var(--green-accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.detail-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--gray-600);
    margin-bottom: 4px;
    text-align: left;
}

.detail-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    text-align: left;
    margin-bottom: 8px;
}

.detail-copy {
    background: linear-gradient(135deg, var(--primary) 0%, var(--green-accent) 100%);
    border: none;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
    color: white;
    font-weight: 500;
    margin-top: 8px;
    display: inline-block;
}

.detail-copy:hover {
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.detail-copy:active {
    transform: scale(0.98);
}

.contact-address-block {
    margin-top: 16px;
    text-align: center;
}

.address-card {
    background: var(--white);
    padding: 20px 28px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-300);
    display: inline-flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 500px;
    margin: 0 auto;
}

.address-icon {
    font-size: 24px;
}

.address-text {
    font-weight: 500;
    color: var(--secondary);
}

/* ===== FOOTER ===== */
.footer {
    background: linear-gradient(135deg, var(--secondary) 0%, #0A0A0A 100%);
    color: white;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 16px;
    background: linear-gradient(135deg, white 0%, var(--green-accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
    line-height: 1.6;
}

.footer-contacts h4 {
    margin-bottom: 20px;
    font-size: 18px;
    color: var(--green-accent);
}

.footer-contacts span,
.footer-address p {
    display: block;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.2s;
    font-size: 14px;
}

.footer-contacts a:hover {
    color: var(--green-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.5);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .products-grid { grid-template-columns: 1fr; }
    .benefits-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .contact-wrapper { padding: 32px 20px; }
}

@media (max-width: 768px) {
    .contact-detail .detail-value,
    .address-card .address-text {
        color: #000000 !important;
    }
}