/* ===== CSS VARIABLES ===== */
:root {
    --primary: #E31837;
    --primary-dark: #B8132C;
    --primary-light: #FF2D4D;
    --primary-glow: rgba(227, 24, 55, 0.4);
    --black: #0A0A0A;
    --black-light: #111111;
    --black-card: #161616;
    --gray-dark: #222222;
    --gray: #333333;
    --gray-light: #666666;
    --white: #FFFFFF;
    --white-muted: #B0B0B0;
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Montserrat', sans-serif;
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --shadow-glow: 0 0 60px rgba(227, 24, 55, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

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

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

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

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

@keyframes slideUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 var(--primary-glow); }
    50% { transform: scale(1.05); box-shadow: 0 0 30px 10px var(--primary-glow); }
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
}

@keyframes craneSwing {
    0%, 100% { transform: rotate(-8deg); }
    50% { transform: rotate(8deg); }
}

@keyframes hookMove {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(30px); }
}

@keyframes buildUp {
    0% { transform: scaleY(0) translateY(20px); opacity: 0; }
    50% { transform: scaleY(1) translateY(0); opacity: 1; }
    100% { transform: scaleY(0) translateY(-20px); opacity: 0; }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes scrollDown {
    0% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(10px); opacity: 0.3; }
    100% { transform: translateY(0); opacity: 1; }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 20px var(--primary-glow); }
    50% { box-shadow: 0 0 40px var(--primary-glow), 0 0 60px var(--primary-glow); }
}

@keyframes borderGlow {
    0%, 100% { border-color: rgba(227, 24, 55, 0.3); }
    50% { border-color: rgba(227, 24, 55, 0.8); }
}

@keyframes textGlow {
    0%, 100% { text-shadow: 0 0 20px var(--primary-glow); }
    50% { text-shadow: 0 0 40px var(--primary-glow), 0 0 60px var(--primary-glow); }
}

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

.animate-slide-up {
    animation: slideUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.2s; opacity: 0; }
.delay-2 { animation-delay: 0.4s; opacity: 0; }
.delay-3 { animation-delay: 0.6s; opacity: 0; }

.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* ===== NAVBAR ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(227, 24, 55, 0.1);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.98);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(227, 24, 55, 0.1);
    border-bottom: 1px solid rgba(227, 24, 55, 0.2);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 12px 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo img {
    height: 65px;
    width: auto;
    transition: var(--transition);
    filter: drop-shadow(0 0 10px rgba(227, 24, 55, 0.3));
}

.logo:hover img {
    transform: scale(1.05);
    filter: drop-shadow(0 0 20px rgba(227, 24, 55, 0.5));
}

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

.nav-link {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--white);
    position: relative;
    padding: 8px 0;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    transition: var(--transition);
    transform: translateX(-50%);
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    text-shadow: 0 0 20px var(--primary-glow);
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 14px 28px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    transition: var(--transition);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.nav-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
}

.nav-cta:hover::before {
    left: 100%;
}

.nav-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(227, 24, 55, 0.4);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 28px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
    background: var(--primary);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
    background: var(--primary);
}

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

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.4);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(227, 24, 55, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(227, 24, 55, 0.1) 0%, transparent 40%),
        linear-gradient(180deg, rgba(10, 10, 10, 0.7) 0%, rgba(10, 10, 10, 0.4) 50%, rgba(10, 10, 10, 0.9) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 1000px;
    padding: 0 20px;
}

.hero-badge {
    display: inline-block;
    background: rgba(227, 24, 55, 0.15);
    border: 1px solid rgba(227, 24, 55, 0.5);
    color: var(--primary);
    padding: 12px 30px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 35px;
    animation: borderGlow 3s ease-in-out infinite;
}

.hero-title {
    margin-bottom: 30px;
}

.brand-name {
    display: block;
    font-size: clamp(3.5rem, 10vw, 7rem);
    font-weight: 700;
    color: var(--white);
    text-shadow: 0 0 60px rgba(227, 24, 55, 0.3);
    letter-spacing: -2px;
    line-height: 1;
}

.brand-location {
    display: block;
    font-size: clamp(1.8rem, 5vw, 3rem);
    font-weight: 400;
    color: var(--primary);
    letter-spacing: 20px;
    margin-top: 15px;
    animation: textGlow 4s ease-in-out infinite;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--white-muted);
    max-width: 650px;
    margin: 0 auto 45px;
    line-height: 1.9;
    font-weight: 300;
}

.hero-buttons {
    display: flex;
    gap: 25px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.scroll-indicator {
    width: 30px;
    height: 55px;
    border: 2px solid rgba(227, 24, 55, 0.4);
    border-radius: 25px;
    position: relative;
    animation: borderGlow 3s ease-in-out infinite;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 12px;
    background: var(--primary);
    border-radius: 2px;
    animation: scrollDown 1.5s infinite;
    box-shadow: 0 0 10px var(--primary-glow);
}

/* Construction Animation Elements */
.construction-elements {
    position: absolute;
    inset: 0;
    z-index: 3;
    pointer-events: none;
    overflow: hidden;
}

.crane {
    position: absolute;
    right: 8%;
    top: 15%;
    width: 180px;
    height: 250px;
}

.crane-arm {
    position: absolute;
    width: 140px;
    height: 6px;
    background: linear-gradient(90deg, var(--primary), var(--primary-dark));
    top: 0;
    right: 0;
    transform-origin: right center;
    animation: craneSwing 5s ease-in-out infinite;
    box-shadow: 0 0 30px var(--primary-glow);
    border-radius: 3px;
}

.crane-hook {
    position: absolute;
    width: 3px;
    height: 80px;
    background: linear-gradient(180deg, var(--gray-light), var(--gray));
    top: 6px;
    left: 25px;
    animation: hookMove 4s ease-in-out infinite;
}

.crane-hook::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -10px;
    width: 24px;
    height: 24px;
    border: 3px solid var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 15px var(--primary-glow);
}

.building-blocks {
    position: absolute;
    left: 5%;
    bottom: 20%;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.block {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    opacity: 0.7;
    transform-origin: bottom;
    box-shadow: 0 0 20px var(--primary-glow);
}

.block-1 {
    width: 70px;
    height: 35px;
    animation: buildUp 3s ease-out infinite;
    animation-delay: 0s;
}

.block-2 {
    width: 55px;
    height: 28px;
    animation: buildUp 3s ease-out infinite;
    animation-delay: 0.7s;
}

.block-3 {
    width: 42px;
    height: 22px;
    animation: buildUp 3s ease-out infinite;
    animation-delay: 1.4s;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 40px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border: 1px solid var(--primary);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.6s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 50px rgba(227, 24, 55, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(227, 24, 55, 0.5);
}

.btn-secondary:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: translateY(-4px);
    box-shadow: 0 20px 50px rgba(227, 24, 55, 0.4);
}

/* ===== SECTION STYLES ===== */
.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-tag {
    display: inline-block;
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 4px;
    margin-bottom: 18px;
    text-shadow: 0 0 20px var(--primary-glow);
}

.section-title {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    color: var(--white);
    margin-bottom: 25px;
}

.section-line {
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    margin: 0 auto;
    box-shadow: 0 0 20px var(--primary-glow);
}

.section-line.left {
    margin: 25px 0;
    background: linear-gradient(90deg, var(--primary), transparent);
}

/* ===== SERVICES PREVIEW ===== */
.services-preview {
    padding: 140px 0;
    background: var(--black);
    position: relative;
}

.services-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.3;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.service-card {
    background: linear-gradient(135deg, var(--black-card) 0%, var(--black-light) 100%);
    border: 1px solid rgba(227, 24, 55, 0.1);
    padding: 45px 35px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(227, 24, 55, 0.05) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition);
}

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

.service-card:hover::after {
    opacity: 1;
}

.service-card:hover {
    border-color: rgba(227, 24, 55, 0.3);
    transform: translateY(-15px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4), 0 0 40px rgba(227, 24, 55, 0.1);
}

.service-icon {
    width: 90px;
    height: 90px;
    background: rgba(227, 24, 55, 0.08);
    border: 2px solid rgba(227, 24, 55, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    font-size: 36px;
    color: var(--primary);
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.service-card:hover .service-icon {
    background: var(--primary);
    color: var(--white);
    transform: rotateY(180deg) scale(1.1);
    box-shadow: 0 0 30px var(--primary-glow);
}

.service-card h3 {
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 18px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    position: relative;
    z-index: 1;
}

.service-card p {
    color: var(--white-muted);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 25px;
    position: relative;
    z-index: 1;
}

.service-link {
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    position: relative;
    z-index: 1;
}

.service-link:hover {
    gap: 18px;
    text-shadow: 0 0 20px var(--primary-glow);
}

/* ===== STATS SECTION ===== */
.stats-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    position: relative;
    overflow: hidden;
}

.stats-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    position: relative;
    z-index: 1;
}

.stat-item {
    text-align: center;
    padding: 20px;
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 5rem;
    font-weight: 700;
    color: var(--white);
    line-height: 1;
    margin-bottom: 15px;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.3);
}

.stat-number::after {
    content: '+';
}

.stat-label {
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 3px;
    font-weight: 600;
}

/* ===== WHY US SECTION ===== */
.why-us {
    padding: 140px 0;
    background: var(--black-light);
    position: relative;
}

.why-us::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
    opacity: 0.3;
}

.why-us-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: center;
}

.why-us-content {
    padding-right: 40px;
}

.why-us-text {
    color: var(--white-muted);
    font-size: 17px;
    line-height: 1.9;
    margin-bottom: 35px;
}

.why-us-list {
    list-style: none;
    margin-bottom: 45px;
}

.why-us-list li {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 15px 0;
    color: var(--white);
    font-size: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.why-us-list li:hover {
    padding-left: 10px;
    border-bottom-color: rgba(227, 24, 55, 0.3);
}

.why-us-list li i {
    color: var(--primary);
    font-size: 20px;
    text-shadow: 0 0 15px var(--primary-glow);
}

.why-us-image {
    position: relative;
}

.why-us-image img {
    width: 100%;
    height: auto;
    display: block;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
}

.image-accent {
    position: absolute;
    bottom: -25px;
    right: -25px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--primary);
    z-index: -1;
    box-shadow: 0 0 30px var(--primary-glow);
}

/* ===== CTA SECTION ===== */
.cta-section {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--black) 0%, var(--black-light) 100%);
    border-top: 1px solid rgba(227, 24, 55, 0.1);
    border-bottom: 1px solid rgba(227, 24, 55, 0.1);
    position: relative;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(227, 24, 55, 0.05) 0%, transparent 60%);
}

.cta-content {
    text-align: center;
    max-width: 750px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--white);
    margin-bottom: 25px;
}

.cta-content p {
    color: var(--white-muted);
    font-size: 17px;
    margin-bottom: 45px;
    line-height: 1.8;
}

.cta-buttons {
    display: flex;
    gap: 25px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--black-card);
    padding: 100px 0 40px;
    border-top: 1px solid rgba(227, 24, 55, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-brand img {
    height: 80px;
    margin-bottom: 25px;
    filter: drop-shadow(0 0 20px rgba(227, 24, 55, 0.3));
}

.footer-brand p {
    color: var(--white-muted);
    font-size: 15px;
    line-height: 1.9;
}

.footer h4 {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 700;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 30px;
    position: relative;
    padding-bottom: 18px;
}

.footer h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), transparent);
    box-shadow: 0 0 15px var(--primary-glow);
}

.footer ul {
    list-style: none;
}

.footer-links li,
.footer-services li,
.footer-contact li {
    padding: 10px 0;
}

.footer-links a,
.footer-contact a {
    color: var(--white-muted);
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover,
.footer-contact a:hover {
    color: var(--primary);
    padding-left: 8px;
    text-shadow: 0 0 15px var(--primary-glow);
}

.footer-services li {
    color: var(--white-muted);
    font-size: 14px;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 15px;
}

.footer-contact i {
    color: var(--primary);
    font-size: 18px;
    text-shadow: 0 0 15px var(--primary-glow);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom p {
    color: var(--white-muted);
    font-size: 13px;
    letter-spacing: 1px;
}

/* ===== WHATSAPP BUTTON ===== */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 65px;
    height: 65px;
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 35px;
    color: var(--white);
    z-index: 999;
    box-shadow: 0 10px 40px rgba(37, 211, 102, 0.4);
    animation: pulse 2s infinite;
    transition: var(--transition);
}

.whatsapp-btn:hover {
    transform: scale(1.15);
    box-shadow: 0 15px 50px rgba(37, 211, 102, 0.6);
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: 110px;
    right: 30px;
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--white);
    cursor: pointer;
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: 0 10px 30px rgba(227, 24, 55, 0.3);
}

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

.back-to-top:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(227, 24, 55, 0.5);
}

/* ===== PAGE HEADER ===== */
.page-header {
    padding: 200px 0 120px;
    background: linear-gradient(135deg, var(--black) 0%, var(--black-light) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 30% 20%, rgba(227, 24, 55, 0.1) 0%, transparent 50%),
        url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23E31837' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E");
}

.page-header h1 {
    font-size: clamp(2.8rem, 7vw, 4.5rem);
    color: var(--white);
    margin-bottom: 25px;
    position: relative;
}

.page-header p {
    color: var(--white-muted);
    font-size: 18px;
    max-width: 650px;
    margin: 0 auto;
    position: relative;
    line-height: 1.8;
}

/* ===== ABOUT PAGE ===== */
.about-section {
    padding: 140px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 100px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
}

.about-image-accent {
    position: absolute;
    top: -25px;
    left: -25px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--primary);
    z-index: -1;
    box-shadow: 0 0 30px var(--primary-glow);
}

.about-content h2 {
    font-size: 2.8rem;
    color: var(--white);
    margin-bottom: 25px;
}

.about-content p {
    color: var(--white-muted);
    font-size: 16px;
    line-height: 1.9;
    margin-bottom: 22px;
}

/* ===== SERVICES PAGE ===== */
.services-full {
    padding: 140px 0;
    background: var(--black);
}

.services-full-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.service-full-card {
    background: linear-gradient(135deg, var(--black-card) 0%, var(--black-light) 100%);
    border: 1px solid rgba(227, 24, 55, 0.1);
    padding: 55px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-full-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: linear-gradient(180deg, var(--primary), transparent);
    transition: var(--transition);
}

.service-full-card:hover::before {
    height: 100%;
}

.service-full-card:hover {
    border-color: rgba(227, 24, 55, 0.3);
    transform: translateY(-8px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4), 0 0 40px rgba(227, 24, 55, 0.1);
}

.service-full-card .service-icon {
    margin: 0 0 30px 0;
}

.service-full-card h3 {
    font-size: 26px;
    color: var(--white);
    margin-bottom: 18px;
}

.service-full-card p {
    color: var(--white-muted);
    line-height: 1.9;
    margin-bottom: 25px;
}

.service-features {
    list-style: none;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    color: var(--white);
    font-size: 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.service-features li i {
    color: var(--primary);
    text-shadow: 0 0 10px var(--primary-glow);
}

/* ===== PORTFOLIO PAGE ===== */
.portfolio-section {
    padding: 140px 0;
    background: var(--black);
}

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

.portfolio-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.portfolio-item img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10, 10, 10, 0.98) 0%, rgba(10, 10, 10, 0.5) 50%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 35px;
    opacity: 0;
    transition: var(--transition);
}

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

.portfolio-item:hover img {
    transform: scale(1.15);
}

.portfolio-overlay h3 {
    color: var(--white);
    font-size: 22px;
    margin-bottom: 8px;
}

.portfolio-overlay span {
    color: var(--primary);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 3px;
    text-shadow: 0 0 15px var(--primary-glow);
}

/* ===== FAQ PAGE ===== */
.faq-section {
    padding: 140px 0;
    background: var(--black);
}

.faq-container {
    max-width: 850px;
    margin: 0 auto;
}

.faq-item {
    background: linear-gradient(135deg, var(--black-card) 0%, var(--black-light) 100%);
    border: 1px solid rgba(227, 24, 55, 0.1);
    margin-bottom: 20px;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(227, 24, 55, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 28px 35px;
    cursor: pointer;
}

.faq-question h3 {
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
    padding-right: 20px;
}

.faq-question i {
    color: var(--primary);
    font-size: 22px;
    transition: var(--transition);
    text-shadow: 0 0 15px var(--primary-glow);
}

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

.faq-item.active .faq-question h3 {
    color: var(--primary);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 35px 30px;
    color: var(--white-muted);
    line-height: 1.9;
}

/* ===== CONTACT PAGE ===== */
.contact-section {
    padding: 140px 0;
    background: var(--black);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 100px;
}

.contact-info h2 {
    font-size: 2.2rem;
    color: var(--white);
    margin-bottom: 40px;
}

.contact-info-item {
    display: flex;
    gap: 25px;
    margin-bottom: 35px;
    transition: var(--transition);
}

.contact-info-item:hover {
    transform: translateX(10px);
}

.contact-info-item .icon {
    width: 65px;
    height: 65px;
    background: rgba(227, 24, 55, 0.08);
    border: 2px solid rgba(227, 24, 55, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: var(--primary);
    flex-shrink: 0;
    transition: var(--transition);
}

.contact-info-item:hover .icon {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 0 30px var(--primary-glow);
}

.contact-info-item h4 {
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--white);
    margin-bottom: 8px;
}

.contact-info-item p,
.contact-info-item a {
    color: var(--white-muted);
    font-size: 15px;
}

.contact-info-item a:hover {
    color: var(--primary);
    text-shadow: 0 0 15px var(--primary-glow);
}

.contact-form {
    background: linear-gradient(135deg, var(--black-card) 0%, var(--black-light) 100%);
    border: 1px solid rgba(227, 24, 55, 0.1);
    padding: 55px;
}

.contact-form h3 {
    font-size: 1.8rem;
    color: var(--white);
    margin-bottom: 35px;
}

.form-group {
    margin-bottom: 28px;
}

.form-group label {
    display: block;
    color: var(--white);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 18px 22px;
    background: var(--black);
    border: 1px solid rgba(227, 24, 55, 0.15);
    color: var(--white);
    font-family: var(--font-body);
    font-size: 15px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(227, 24, 55, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-light);
}

.form-group textarea {
    min-height: 160px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }
}

@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 89px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 10, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 30px;
        gap: 0;
        transform: translateY(-150%);
        transition: var(--transition);
        border-bottom: 1px solid rgba(227, 24, 55, 0.2);
    }
    
    .nav-menu.active {
        transform: translateY(0);
    }
    
    .nav-menu li {
        padding: 18px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .nav-cta {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .why-us-grid,
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .why-us-content {
        padding-right: 0;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-full-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 35px;
    }
    
    .stat-number {
        font-size: 4rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .footer h4::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-item img {
        height: 320px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .construction-elements {
        display: none;
    }
    
    .contact-form {
        padding: 40px 30px;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 12px 20px;
    }
    
    .logo img {
        height: 50px;
    }
    
    .btn {
        padding: 16px 30px;
        font-size: 12px;
    }
    
    .service-card,
    .service-full-card {
        padding: 35px 25px;
    }
    
    .whatsapp-btn {
        width: 55px;
        height: 55px;
        font-size: 28px;
        bottom: 20px;
        right: 20px;
    }
    
    .back-to-top {
        width: 48px;
        height: 48px;
        bottom: 85px;
        right: 20px;
    }
    
    .page-header {
        padding: 160px 0 80px;
    }
}