:root {
    --primary-color: #0A0F1F;
    --secondary-color: #141B34;
    --accent-color: #F43F5E;
    --accent-glow: #FB7185;
    --highlight: #22D3EE;
    --success: #4ADE80;
    --text-main: #F9FAFB;
    --text-muted: #9CA3AF;
    --border-color: #1F2A44;
    --font-heading: 'Inter', sans-serif;
    --font-body: 'Roboto', sans-serif;
    --container-width: 1280px;
    --header-height: 80px;
    --transition-fast: 0.3s ease;
    --transition-smooth: 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* ================= RESET & BASICS ================= */

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

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

body {
    background-color: var(--primary-color);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--text-main);
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -1px;
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
}

h3 {
    font-size: 1.75rem;
    font-weight: 600;
}

p {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
}

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

ul {
    list-style: none;
}

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

/* ================= UTILITIES ================= */

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
}

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

.section-padding {
    padding: 100px 0;
}

.bg-dark {
    background-color: var(--secondary-color);
}

.text-gradient {
    background: linear-gradient(135deg, var(--accent-color), var(--highlight));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    z-index: 1;
    border: none;
    transition: var(--transition-fast);
}

.btn-primary {
    background: linear-gradient(90deg, var(--accent-color), var(--highlight));
    color: white;
    box-shadow: 0 10px 20px -10px rgba(59, 130, 246, 0.5);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px -10px rgba(59, 130, 246, 0.7);
}

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

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

/* ================= HEADER ================= */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    transition: var(--transition-fast);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo-container img {
    height: 45px;
    filter: invert(1);
    width: auto;
}

.main-nav ul {
    display: flex;
    gap: 40px;
}

.main-nav a {
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--accent-color);
    transition: width 0.3s;
}

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

.header-cta {
    display: flex;
    gap: 15px;
}

.mobile-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* ================= HERO SECTION ================= */

.hero-section {
    position: relative;
    padding-top: calc(var(--header-height) + 80px);
    padding-bottom: 100px;
    overflow: hidden;
}

.hero-bg-anim {
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.2) 0%, rgba(15, 23, 42, 0) 70%);
    filter: blur(60px);
    z-index: -1;
    animation: pulseGlow 8s infinite alternate;
}

.hero-bg-anim-2 {
    position: absolute;
    bottom: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.2) 0%, rgba(15, 23, 42, 0) 70%);
    filter: blur(60px);
    z-index: -1;
    animation: pulseGlow 10s infinite alternate-reverse;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-text h1 span {
    display: block;
    color: var(--accent-color);
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.stat-item h4 {
    font-size: 2rem;
    margin-bottom: 0.2rem;
    color: var(--text-main);
}

.stat-item span {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-visual {
    position: relative;
}

.hero-card {
    background: rgba(30, 41, 59, 0.7);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px;
    backdrop-filter: blur(10px);
    position: relative;
    transform: perspective(1000px) rotateY(-10deg) rotateX(5deg);
    transition: transform 0.5s ease;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.hero-card:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

/* ================= SERVICES SECTION ================= */

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.service-card {
    background: var(--secondary-color);
    padding: 40px 30px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
    cursor: default;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-color), var(--highlight));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px -20px rgba(0, 0, 0, 0.5);
    border-color: var(--accent-color);
}

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

.service-icon {
    width: 60px;
    height: 60px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    color: var(--accent-color);
}

.service-card svg {
    width: 30px;
    height: 30px;
}

.service-features {
    margin-top: 20px;
}

.service-features li {
    margin-bottom: 8px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
}

.service-features li::before {
    content: '✓';
    color: var(--success);
    font-weight: bold;
}

/* ================= ROI CALCULATOR (Interactive) ================= */

.calculator-wrapper {
    background: var(--secondary-color);
    border-radius: 20px;
    padding: 50px;
    border: 1px solid var(--border-color);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-top: 50px;
}

.calc-inputs label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: var(--text-main);
}

.input-group {
    margin-bottom: 25px;
}

.input-group input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--primary-color);
    border-radius: 5px;
    outline: none;
    -webkit-appearance: none;
}

.input-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

.val-display {
    float: right;
    color: var(--accent-color);
    font-weight: bold;
}

.calc-results {
    background: var(--primary-color);
    border-radius: 15px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    border: 1px solid var(--border-color);
}

.result-box h4 {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 5px;
}

.result-box .big-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--success);
    margin-bottom: 20px;
}

.chart-placeholder {
    width: 100%;
    height: 10px;
    background: #334155;
    border-radius: 5px;
    margin-top: 10px;
    overflow: hidden;
}

.chart-fill {
    height: 100%;
    background: var(--success);
    width: 0%;
    /* JS will animate */
    transition: width 1s ease;
}

/* ================= TESTIMONIALS ================= */

.testimonial-track {
    display: flex;
    overflow-x: auto;
    gap: 30px;
    padding-bottom: 40px;
    scrollbar-width: none;
}

.testimonial-track::-webkit-scrollbar {
    display: none;
}

.testimonial-card {
    min-width: 350px;
    background: rgba(255, 255, 255, 0.03);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.client-info {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
}

.client-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--highlight);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.quote-icon {
    font-size: 2rem;
    color: var(--border-color);
    line-height: 1;
}

/* ================= CONTACT PAGE ================= */

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    margin-top: 50px;
}

.contact-info-box {
    background: var(--secondary-color);
    padding: 40px;
    border-radius: 20px;
}

.info-item {
    margin-bottom: 30px;
    display: flex;
    gap: 20px;
}

.info-icon {
    width: 40px;
    height: 40px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.contact-form .full-width {
    grid-column: span 2;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-main);
    font-family: var(--font-body);
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    background: rgba(59, 130, 246, 0.05);
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ================= LEGAL PAGES ================= */

.legal-content {
    background: var(--secondary-color);
    padding: 60px;
    border-radius: 20px;
    margin-top: 40px;
}

.legal-content h3 {
    margin-top: 30px;
    color: var(--accent-color);
}

.legal-content ul {
    list-style: disc;
    padding-left: 20px;
    margin-bottom: 20px;
    color: var(--text-muted);
}

/* ================= FOOTER ================= */

.site-footer {
    background: #020617;
    border-top: 1px solid var(--border-color);
    padding: 80px 0 30px;
    margin-top: 100px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand p {
    margin-top: 20px;
    font-size: 0.9rem;
}

.footer-col h4 {
    color: var(--text-main);
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-muted);
    font-size: 0.95rem;
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
}

/* ================= ANIMATIONS ================= */

@keyframes pulseGlow {
    0% {
        opacity: 0.5;
        transform: scale(1);
    }

    100% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }

    100% {
        transform: translateY(0px);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

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

@media (max-width: 1024px) {
    h1 {
        font-size: 2.5rem;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-card {
        margin-top: 40px;
        transform: none;
    }

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

@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: var(--secondary-color);
        padding: 20px;
        transform: translateY(-150%);
        transition: transform 0.3s ease;
        border-bottom: 1px solid var(--border-color);
    }

    .main-nav.active {
        transform: translateY(0);
    }

    .main-nav ul {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }

    .mobile-toggle {
        display: block;
        color: var(--text-main);
    }

    .header-cta {
        display: none;
    }

    .contact-layout {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
}