:root {
    --accent: #FFED00;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-theme="dark"] {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-card: #111111;
    --bg-card-hover: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #222222;
    --navbar-bg: rgba(0, 0, 0, 0.95);
    --shadow-color: rgba(255, 237, 0, 0.08);
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-card: #ffffff;
    --bg-card-hover: #f9f9f9;
    --text-primary: #000000;
    --text-secondary: #555555;
    --border-color: #e0e0e0;
    --navbar-bg: rgba(255, 255, 255, 0.95);
    --shadow-color: rgba(0, 0, 0, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color var(--transition), color var(--transition);
    overflow-x: hidden;
}

/* ===== SCROLLBAR ===== */
/*::-webkit-scrollbar { width: 8px; }*/
/*::-webkit-scrollbar-track { background: var(--bg-secondary); }*/
/*::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 4px; }*/

/* ===== NAVBAR ===== */
.navbar-custom {
    background: rgb(255 237 0);
    backdrop-filter: blur(20px);
    padding: 0.8rem 0;
    transition: all var(--transition);
    z-index: 1050;
}

.navbar-custom.scrolled {
    padding: 0.5rem 0;
    box-shadow: 0 4px 30px var(--shadow-color);
}

.navbar-brand {
    font-weight: 900;
    font-size: 1.5rem;
    color: var(--text-primary) !important;
    letter-spacing: -0.5px;
}

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

.nav-link {
    color: #444 !important;
    font-weight: 600;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.5rem 1rem !important;
    position: relative;
    transition: color var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: #000;
    transition: width var(--transition);
}

.nav-link:hover {
    color: #000 !important;
}

.nav-link:hover::after {
    width: 60%;
}

.theme-toggle {
    background: none;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
    font-size: 1.1rem;
}

.theme-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: rotate(180deg);
}

/* ===== HERO ===== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--bg-primary);
    padding-top: 120px;
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.03;
    background-image:
            radial-gradient(circle at 25% 25%, var(--accent) 1px, transparent 1px),
            radial-gradient(circle at 75% 75%, var(--accent) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.15;
    background: var(--accent);
    top: 50%;
    right: -10%;
    transform: translateY(-50%);
    animation: glowPulse 4s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.1; transform: translateY(-50%) scale(1); }
    50% { opacity: 0.2; transform: translateY(-50%) scale(1.1); }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 3rem);
    font-weight: 900;
    line-height: 1.05;
    margin-bottom: 1.5rem;
    font-family: "Roboto Condensed", sans-serif;
    text-transform: uppercase;
}

.hero-title .highlight {
    color: #555555;
    position: relative;
    display: inline-block;
    font-size: 37px;
    font-family: Open Sans, Helvetica, Arial, sans-serif;
}

.hero-title .highlight::after {
    content: '';
    display: none;
    position: absolute;
    bottom: 5px;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--accent);
    opacity: 0.3;
    border-radius: 3px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.7;
    margin-bottom: 2.5rem;
    font-family: "Roboto", sans-serif;
}

.btn-accent {
    background: var(--accent);
    color: #000;
    font-weight: 700;
    padding: 14px 36px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-accent::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

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

.btn-accent:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(255, 237, 0, 0.3);
    color: #000;
}

.btn-outline-accent {
    background: transparent;
    color: var(--text-primary);
    font-weight: 700;
    padding: 14px 36px;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--transition);
}

.btn-outline-accent:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-3px);
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.stat-item h3 {
    font-size: 3.5rem;
    font-weight: 900;
    color: #0074d9;
    line-height: 1;
    font-family: "Montserrat", sans-serif;
}

.stat-item p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.3rem;
}

.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.gas-cylinder-icon {
    font-size: 18rem;
    color: var(--accent);
    opacity: 0.08;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(3deg); }
}

.floating-badge {
    position: absolute;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    box-shadow: 0 10px 40px var(--shadow-color);
    animation: floatBadge 5s ease-in-out infinite;
}

.floating-badge:nth-child(2) { animation-delay: -1.5s; }
.floating-badge:nth-child(3) { animation-delay: -3s; }

@keyframes floatBadge {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.floating-badge .badge-icon {
    width: 44px;
    height: 44px;
    background: var(--accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    font-size: 1.1rem;
}

.floating-badge .badge-text {
    font-weight: 700;
    font-size: 1rem;
}

.floating-badge .badge-sub {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.badge-pos-1 { top: 15%; right: 5%; }
.badge-pos-2 { bottom: 25%; right: 0; }
.badge-pos-3 { bottom: 10%; left: 10%; }

/* ===== SECTION STYLES ===== */
section {
    padding: 100px 0;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--accent);
    margin-bottom: 1rem;
}

.section-label::before {

}

.section-title {
    font-size: clamp(2rem, 4vw, 2.2rem);
    font-weight: 600;
    margin-bottom: 1rem;
    line-height: 1.15;
    font-family: "Roboto", sans-serif;
}

.section-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.7;
}

.section-desc.centered {
    margin: 0 auto;
}

/* ===== ABOUT ===== */
.about-section {
    background: var(--bg-secondary);
}

.about-feature {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.about-feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--accent);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    font-size: 1.1rem;
}

.about-feature h5 {
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 0.2rem;
}

.about-feature p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.about-image-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-image-wrapper .big-icon {
    font-size: 8rem;
    color: var(--accent);
    opacity: 0.15;
}

.about-image-wrapper::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent);
}

/* ===== SERVICES / GASES ===== */
.gas-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    height: 100%;
}

.gas-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent);
    transform: scaleX(0);
    transition: transform var(--transition);
}

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

.gas-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent);
    box-shadow: 0 20px 60px var(--shadow-color);
    background: rgba(255, 237, 0, 0.05);
}

.gas-icon {
    width: 150px;
    margin: 0 auto 1.5rem;
    background: var(--bg-secondary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--accent);
    transition: all var(--transition);
}
.gas-icon:hover {

}
.gas-card:hover .gas-icon {
    background: var(--accent);
    color: #000;
    /*transform: scale(1.1) rotate(5deg);*/
}

.gas-card h4 {
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.gas-card .gas-formula {
    font-size: 1.3rem;
    color: #30b935;
    font-weight: 600;
    margin-bottom: 0.8rem;
}

.gas-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

/* ===== ADVANTAGES ===== */
.advantages-section {
    background: var(--bg-secondary);
}

.advantage-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    transition: all var(--transition);
    height: 100%;
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px var(--shadow-color);
}

.advantage-num {
    font-size: 3rem;
    font-weight: 900;
    color: #0074d9;
    opacity: 0.5;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.advantage-card h5 {
    font-weight: 700;
    font-size: 1.35rem;
    margin-bottom: 0.5rem;
}

.advantage-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

/* ===== PARTNERS ===== */
.partner-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    transition: all var(--transition);
    height: 100%;
}

.partner-card:hover {
    border-color: var(--accent);
    transform: translateY(-5px);
}

.partner-logo-placeholder {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    background: var(--bg-secondary);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--text-secondary);
    transition: all var(--transition);
}

.partner-card:hover .partner-logo-placeholder {
    color: var(--accent);
    background: rgba(255, 237, 0, 0.1);
}

.partner-card h5 {
    font-weight: 700;
    margin-bottom: 0.3rem;
}

.partner-card p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 0;
}

/* ===== CONTACTS ===== */
.contacts-section {
    background: var(--bg-secondary);
}

.contact-info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    align-items: flex-start;
    gap: 1.2rem;
    transition: all var(--transition);
    height: 100%;
}

.contact-info-card:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
}

.contact-icon {
    flex-shrink: 0;
    width: 52px;
    height: 52px;
    background: var(--accent);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    font-size: 1.2rem;
}

.contact-info-card h5 {
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 0.3rem;
}

.contact-info-card p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin: 0;
    line-height: 1.6;
}

.contact-info-card a {
    color: #0074d9;
    text-decoration: none;
    font-weight: 600;
    transition: opacity var(--transition);
}

.contact-info-card a:hover {
    opacity: 0.8;
}

.contact-form-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
}

.form-control-custom {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px 18px;
    color: var(--text-primary);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.95rem;
    transition: all var(--transition);
}

.form-control-custom:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(255, 237, 0, 0.15);
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.form-control-custom::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

/* ===== MAP ===== */
.map-wrapper {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    aspect-ratio: 16/9;
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-wrapper iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.map-placeholder {
    text-align: center;
    color: var(--text-secondary);
}

.map-placeholder i {
    font-size: 3rem;
    color: var(--accent);
    opacity: 0.3;
    margin-bottom: 1rem;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 2rem;
}

.footer-brand {
    font-weight: 900;
    font-size: 1.3rem;
    color: var(--text-primary);
}

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

.footer p {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    margin-top: 2rem;
}

/* ===== ANIMATIONS ===== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }
.delay-7 { transition-delay: 0.7s; }

/* ===== CTA BANNER ===== */
.cta-banner {
    background: var(--accent);
    border-radius: 24px;
    padding: 4rem 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
    animation: ctaGlow 5s ease-in-out infinite;
}

@keyframes ctaGlow {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(10%, 10%); }
}

.cta-banner h2 {
    color: #000;
    font-weight: 900;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    position: relative;
    z-index: 1;
}

.cta-banner p {
    color: rgba(0,0,0,0.7);
    font-size: 1.1rem;
    position: relative;
    z-index: 1;
}

.btn-dark {
    background: #000;
    color: var(--accent);
    font-weight: 700;
    padding: 14px 36px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--transition);
    position: relative;
    z-index: 1;
}

.btn-dark:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    color: var(--accent);
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--accent);
    color: #000;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition);
    z-index: 1000;
    box-shadow: 0 5px 20px rgba(255, 237, 0, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

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

/* ===== PARTICLES ===== */
.particles-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat linear infinite;
}

@keyframes particleFloat {
    0% { opacity: 0; transform: translateY(100vh) scale(0); }
    10% { opacity: 0.6; }
    90% { opacity: 0.6; }
    100% { opacity: 0; transform: translateY(-10vh) scale(1); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 991px) {
    .hero-stats { gap: 2rem; }
    .hero-visual { display: none; }
    .floating-badge { display: none; }
}

@media (max-width: 767px) {
    section { padding: 70px 0; }
    .hero-stats { flex-wrap: wrap; gap: 1.5rem; }
    .stat-item h3 { font-size: 2rem; }
    .cta-banner { padding: 3rem 1.5rem; }
}

/* ===== PRELOADER ===== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s, visibility 0.5s;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== COUNTER ANIMATION ===== */
.counter { display: inline-block; }