/* CSS Variables & Theme Setup */
:root {
    --bg-dark: #070a13;
    --bg-card: rgba(17, 24, 39, 0.6);
    --bg-card-hover: rgba(26, 36, 57, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(139, 92, 246, 0.4);
    
    --color-primary: #8b5cf6; /* Indigo / Purple */
    --color-secondary: #06b6d4; /* Teal / Cyan */
    --color-text-main: #f3f4f6;
    --color-text-muted: #9ca3af;
    --color-success: #10b981;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --glow-primary: 0 0 20px rgba(139, 92, 246, 0.25);
    --glow-secondary: 0 0 20px rgba(6, 118, 212, 0.25);
}

/* Base resets & styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 600;
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header & Sticky Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(7, 10, 19, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 36px;
    width: 36px;
    border-radius: 8px;
    object-fit: cover;
    border: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.3);
}

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

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

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.nav-link:hover {
    color: #fff;
}

.nav-btn {
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    padding: 0.6rem 1.4rem;
    border-radius: 9999px;
    box-shadow: var(--glow-primary);
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(139, 92, 246, 0.45);
}

.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-family: var(--font-heading);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: #fff;
    box-shadow: var(--glow-primary);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 25px rgba(139, 92, 246, 0.45);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-main);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-block {
    width: 100%;
}

.btn-icon {
    margin-left: 8px;
    width: 18px;
    height: 18px;
}

/* Gradient Text */
.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 30%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 10rem 0 7rem 0;
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-glow-1 {
    position: absolute;
    top: 15%;
    left: 20%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, rgba(0,0,0,0) 70%);
    z-index: -1;
}

.hero-glow-2 {
    position: absolute;
    bottom: 15%;
    right: 20%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.12) 0%, rgba(0,0,0,0) 70%);
    z-index: -1;
}

.hero-content {
    max-width: 800px;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    color: #a78bfa;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 2rem;
    letter-spacing: 0.5px;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.15;
    letter-spacing: -1.5px;
    margin-bottom: 1.5rem;
    font-weight: 800;
}

.hero-lead {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: 3rem;
    font-weight: 400;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

/* Sections Core Layout */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem auto;
}

.section-header h2 {
    font-size: 2.5rem;
    letter-spacing: -0.5px;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

.services, .simulator, .contact {
    padding: 7rem 0;
    border-top: 1px solid var(--border-color);
}

/* Services Grid & Cards */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    transition: var(--transition-smooth);
}

.service-card:hover {
    transform: translateY(-5px);
    background: var(--bg-card-hover);
    border-color: var(--border-color-hover);
    box-shadow: var(--glow-primary);
}

.service-icon-wrapper {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 54px;
    height: 54px;
    background: rgba(139, 92, 246, 0.1);
    border-radius: 12px;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    border: 1px solid rgba(139, 92, 246, 0.15);
}

.service-card:hover .service-icon-wrapper {
    color: var(--color-secondary);
    background: rgba(6, 182, 212, 0.1);
    border-color: rgba(6, 182, 212, 0.15);
}

.service-icon {
    width: 24px;
    height: 24px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #fff;
}

.service-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 1.25rem;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--color-text-main);
}

.check-icon {
    width: 16px;
    height: 16px;
    color: var(--color-secondary);
}

/* Simulator Section */
.simulator {
    position: relative;
}

.simulator-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.08) 0%, rgba(0,0,0,0) 70%);
    z-index: -1;
}

.simulator-layout {
    display: grid;
    grid-template-columns: 1.8fr 1.2fr;
    gap: 3rem;
    align-items: start;
}

.simulator-config {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.simulator-group {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.group-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    color: #fff;
}

.services-selector {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1rem;
}

.selector-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
}

.selector-card i {
    width: 24px;
    height: 24px;
    color: var(--color-text-muted);
}

.selector-card span {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.selector-card:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.selector-card.active {
    background: rgba(139, 92, 246, 0.1);
    border-color: var(--color-primary);
    box-shadow: var(--glow-primary);
}

.selector-card.active i, .selector-card.active span {
    color: #fff;
}

.range-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.range-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem;
    text-align: left;
    cursor: pointer;
    transition: var(--transition-smooth);
    color: var(--color-text-muted);
}

.range-btn h4 {
    font-size: 1.1rem;
    margin-bottom: 0.4rem;
    color: #fff;
}

.range-btn p {
    font-size: 0.75rem;
    line-height: 1.4;
}

.range-btn:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.range-btn.active {
    background: rgba(6, 182, 212, 0.1);
    border-color: var(--color-secondary);
    box-shadow: var(--glow-secondary);
}

.range-btn.active h4 {
    color: #fff;
}

/* Simulator Summary Card */
.simulator-summary {
    background: linear-gradient(145deg, rgba(20, 27, 45, 0.8) 0%, rgba(10, 15, 28, 0.9) 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 100px;
}

.simulator-summary h3 {
    font-size: 1.4rem;
    margin-bottom: 1.5rem;
}

.summary-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.08);
    margin: 1.5rem 0;
}

.summary-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    min-height: 120px;
}

.empty-summary-text {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    text-align: center;
    margin: auto 0;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.total-row {
    margin-top: 1rem;
    margin-bottom: 2rem;
}

.total-row span:first-child {
    font-size: 1.1rem;
    font-weight: 600;
    color: #fff;
    align-self: center;
}

.price-val {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-secondary);
    font-family: var(--font-heading);
}

/* Contact Section & Form */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
}

.info-card i {
    color: var(--color-primary);
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.info-card h4 {
    margin-bottom: 0.25rem;
    font-size: 1.05rem;
}

.info-card p, .info-card a {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.info-card a:hover {
    color: #fff;
}

.contact-form-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-main);
}

.form-group input, .form-group select, .form-group textarea {
    background: rgba(7, 10, 19, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.8rem 1rem;
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition-smooth);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.2);
}

.form-group select option {
    background-color: var(--bg-dark);
    color: #fff;
}

.form-feedback {
    font-size: 0.9rem;
    border-radius: 6px;
    padding: 0.75rem;
    display: none;
    text-align: center;
}

.form-feedback.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.form-feedback.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Footer Section */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    background: #04060b;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.footer-links a:hover {
    color: #fff;
}

/* Mobile Responsive Adjustments */
@media (max-width: 968px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .simulator-layout, .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .simulator-summary {
        position: relative;
        top: 0;
    }
}

@media (max-width: 768px) {
    .navbar-container {
        padding: 1rem 1.5rem;
    }
    
    .mobile-nav-toggle {
        display: block;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(7, 10, 19, 0.95);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        display: none;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hero {
        padding-top: 8rem;
    }
    
    .hero h1 {
        font-size: 2.4rem;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: 1rem;
    }
    
    .range-selector {
        grid-template-columns: 1fr;
    }
}