/* ==========================================
   Energetika Ltd - Main Stylesheet
   Energy Engineering Solutions
   ========================================== */

/* CSS Custom Properties */
:root {
    /* Engineering/technical colour palette - not greenwash */
    --color-primary: #2563eb;        /* Technical blue */
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-secondary: #64748b;      /* Slate grey */
    --color-secondary-dark: #475569;
    --color-accent: #ff4500;         /* Intense fire orange */
    --color-orange: #ff4500;         /* Fire orange alias */
    --color-orange-dark: #e03e00;
    --color-orange-light: #ff6b2b;
    --color-orange-glow: rgba(255, 69, 0, 0.25);
    --color-orange-glow-strong: rgba(255, 69, 0, 0.45);
    --color-dark: #0f172a;           /* Deep slate */
    --color-dark-secondary: #1e293b;
    --color-darker: #020617;
    --color-light: #f8fafc;
    --color-text: #cbd5e1;           /* Light slate text */
    --color-text-secondary: #94a3b8;
    --color-text-bright: #f1f5f9;
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-light: rgba(255, 255, 255, 0.1);
    --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-primary));
    --gradient-hero: radial-gradient(ellipse at 30% 20%, rgba(255, 69, 0, 0.12) 0%, transparent 50%),
                     radial-gradient(ellipse at 70% 80%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
                     radial-gradient(ellipse at 50% 50%, rgba(255, 107, 43, 0.05) 0%, transparent 60%);
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Inter', var(--font-primary);
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 30px var(--color-orange-glow);
    --shadow-glow-strong: 0 0 50px var(--color-orange-glow-strong);
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-full: 9999px;
    --transition: all 0.2s ease;
}

/* Reset & Base Styles */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--color-dark);
    color: var(--color-text);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-tag {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(255, 69, 0, 0.12);
    border: 1px solid rgba(255, 69, 0, 0.3);
    border-radius: var(--border-radius-sm);
    color: var(--color-orange-light);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    margin-bottom: 16px;
    font-family: var(--font-mono);
}

.section-tag.light {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: var(--border-radius-sm);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-bright);
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.section-title.light {
    color: var(--color-text-bright);
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    max-width: 650px;
    line-height: 1.7;
    margin-bottom: 40px;
}

.section-subtitle.light {
    color: rgba(255, 255, 255, 0.7);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: var(--border-radius-full);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px var(--color-orange-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--color-orange-glow-strong);
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

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

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

.btn-large {
    padding: 18px 36px;
    font-size: 1.05rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ==========================================
   Navigation
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(10, 15, 28, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: 12px 0;
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    color: white;
    text-decoration: none;
}

.wordmark-nav {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 700;
    font-size: 22px;
    letter-spacing: 4px;
    fill: #ffffff;
}

.wordmark-footer {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-weight: 700;
    font-size: 28px;
    letter-spacing: 4px;
    fill: #ffffff;
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
}

.logo-text {
    font-family: var(--font-heading);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 4px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
    border-radius: 1px;
}

.nav-link:hover {
    color: white;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-cta {
    padding: 10px 24px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
    color: white;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: white;
    border-radius: 2px;
    transition: var(--transition);
}

/* ==========================================
   Hero Section
   ========================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 30%, rgba(255, 69, 0, 0.18) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(255, 107, 43, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(37, 99, 235, 0.06) 0%, transparent 60%),
        var(--color-dark);
}

.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--color-orange-light);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 8s ease-in-out infinite;
    box-shadow: 0 0 6px rgba(255, 69, 0, 0.3);
}

.gradient-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, var(--color-dark) 100%);
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 900px;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255, 69, 0, 0.1);
    border: 1px solid rgba(255, 69, 0, 0.25);
    border-radius: var(--border-radius-full);
    color: var(--color-orange-light);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    color: white;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
    animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    padding: 40px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    backdrop-filter: blur(10px);
    animation: fadeInUp 0.8s ease-out 0.8s backwards;
}

.stat {
    text-align: center;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
}

.stat-suffix {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 60px;
    background: var(--color-border);
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    animation: bounce 2s ease-in-out infinite;
}

.scroll-indicator i {
    font-size: 1.2rem;
}

/* ==========================================
   Services Section
   ========================================== */
.services {
    padding: 120px 0;
    background: var(--color-darker);
}

.services .section-header {
    text-align: center;
    margin-bottom: 64px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 24px;
}

.service-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 36px;
    transition: var(--transition);
    position: relative;
}

.service-card:hover {
    border-color: rgba(255, 69, 0, 0.4);
    box-shadow: var(--shadow-glow);
}

.service-card > * {
    position: relative;
    z-index: 1;
}

.service-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 69, 0, 0.08);
    border: 1px solid rgba(255, 69, 0, 0.2);
    border-radius: var(--border-radius-sm);
    color: var(--color-orange-light);
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-bright);
    margin-bottom: 10px;
}

.service-card > p {
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
    font-size: 0.95rem;
}

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

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    color: var(--color-text);
    font-size: 0.9rem;
}

.service-features li i {
    color: var(--color-primary-light);
    font-size: 0.75rem;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary-light);
    font-weight: 600;
    font-size: 0.9rem;
}

.service-link:hover {
    gap: 12px;
}

/* ==========================================
   Solutions Banner
   ========================================== */
.solutions-banner {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}

.solutions-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-dark-secondary) 0%, var(--color-darker) 100%);
}

.solutions-content {
    position: relative;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin: 48px 0;
}

.solution-item {
    text-align: center;
    padding: 28px 20px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    transition: var(--transition);
}

.solution-item:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 69, 0, 0.4);
    transform: translateY(-2px);
}

.solution-item i {
    font-size: 1.8rem;
    color: var(--color-primary-light);
    margin-bottom: 14px;
}

.solution-item h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-bright);
    margin-bottom: 6px;
}

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

/* ==========================================
   Why Us Section
   ========================================== */
.why-us {
    padding: 120px 0;
    background: var(--color-dark);
}

.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-top: 40px;
}

.benefit {
    display: flex;
    gap: 16px;
}

.benefit-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 69, 0, 0.1);
    border: 1px solid rgba(255, 69, 0, 0.2);
    border-radius: var(--border-radius-sm);
    color: var(--color-primary-light);
    font-size: 1rem;
}

.benefit h4 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-text-bright);
    margin-bottom: 4px;
}

.benefit p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.visual-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.card-header {
    padding: 24px 32px;
    border-bottom: 1px solid var(--color-border);
}

.card-header h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: white;
}

.results-chart {
    padding: 32px;
}

.chart-row {
    margin-bottom: 24px;
}

.chart-row span:first-child {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.chart-bar {
    position: relative;
    height: 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 8px;
}

.bar-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 6px;
    transition: width 1.5s ease-out;
}

.bar-after {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: rgba(255, 69, 0, 0.4);
}

.chart-label {
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 600;
}

.results-cta {
    padding: 24px 32px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.results-cta p {
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    font-size: 0.95rem;
}

/* ==========================================
   Testimonials
   ========================================== */
.testimonials {
    padding: 120px 0;
    background: var(--color-darker);
}

.testimonials .section-header {
    text-align: center;
    margin-bottom: 64px;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 32px;
    transition: var(--transition);
}

.testimonial-card:hover {
    border-color: rgba(255, 69, 0, 0.3);
    transform: translateY(-2px);
}

.testimonial-stars {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
}

.testimonial-stars i {
    color: var(--color-primary-light);
    font-size: 0.85rem;
}

.testimonial-text {
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: 20px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 14px;
}

.author-avatar {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-sm);
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
}

.author-info h5 {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-bright);
    margin-bottom: 2px;
}

.author-info span {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

/* ==========================================
   CTA Section
   ========================================== */
.cta-section {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-dark-secondary) 0%, var(--color-dark) 100%);
}

.cta-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 69, 0, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.cta-content {
    position: relative;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-form {
    margin-top: 48px;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.form-grid input,
.form-grid select,
.form-grid textarea {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: 14px 16px;
    color: var(--color-text-bright);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    transition: var(--transition);
}

.form-grid input::placeholder,
.form-grid textarea::placeholder {
    color: var(--color-text-secondary);
}

.form-grid input:focus,
.form-grid select:focus,
.form-grid textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-orange-glow);
}

.form-grid select {
    color: var(--color-text-secondary);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
}

.form-grid select option {
    background: var(--color-dark-secondary);
    color: var(--color-text-bright);
}

.form-grid textarea {
    grid-column: span 2;
    resize: vertical;
    min-height: 100px;
}

/* ==========================================
   MCS Compliance Section
   ========================================== */
.mcs-compliance {
    padding: 100px 0;
    background: var(--color-darker);
}

.mcs-compliance .section-header {
    text-align: center;
    margin-bottom: 64px;
}

.compliance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

.compliance-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 28px;
    transition: var(--transition);
}

.compliance-card:hover {
    border-color: rgba(255, 69, 0, 0.3);
}

.compliance-card h4 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-text-bright);
    margin-bottom: 12px;
}

.compliance-card p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.compliance-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-primary-light);
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 8px;
}

.compliance-link:hover {
    gap: 10px;
}

/* ==========================================
   MCS/TrustMark Banner
   ========================================== */
.mcs-banner {
    background: rgba(255, 69, 0, 0.05);
    border: 1px solid rgba(255, 69, 0, 0.2);
    border-radius: var(--border-radius-md);
    padding: 20px 24px;
    margin: 40px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.mcs-banner-text h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--color-text-bright);
    margin-bottom: 4px;
}

.mcs-banner-text p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.mcs-badges {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.mcs-badge {
    padding: 8px 16px;
    background: rgba(255, 69, 0, 0.1);
    border: 1px solid rgba(255, 69, 0, 0.3);
    border-radius: var(--border-radius-sm);
    color: var(--color-orange-light);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.mcs-badge:hover {
    background: rgba(255, 69, 0, 0.2);
}

/* ==========================================
   Calculator Tiles
   ========================================== */
.calc-tiles {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 60px;
}

.calc-tile {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 32px 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    text-decoration: none;
    color: inherit;
    display: block;
}

.calc-tile:hover {
    border-color: rgba(255, 69, 0, 0.4);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.tile-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 69, 0, 0.1);
    border: 1px solid rgba(255, 69, 0, 0.2);
    border-radius: var(--border-radius-md);
    color: var(--color-primary-light);
    font-size: 1.5rem;
    margin: 0 auto 20px;
}

.calc-tile h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-bright);
    margin-bottom: 10px;
}

.calc-tile p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.tile-action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-primary-light);
    font-size: 0.85rem;
    font-weight: 500;
}

.calc-tile:hover .tile-action {
    gap: 10px;
}

/* ==========================================
   Calculator Modal Overlay
   ========================================== */
.calc-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(2, 6, 23, 0.9);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.calc-modal-overlay.active {
    display: flex;
}

.calc-modal {
    background: var(--color-dark-secondary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 1100px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.calc-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.2rem;
    z-index: 10;
}

.calc-modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.calc-modal-body {
    padding: 48px;
}

/* ==========================================
   Chat Widget
   ========================================== */
.chat-widget {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1500;
}

.chat-button {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 20px var(--color-orange-glow-strong);
    transition: var(--transition);
}

.chat-button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px var(--shadow-glow-strong);
}

.chat-tooltip {
    position: absolute;
    bottom: 70px;
    right: 0;
    background: var(--color-dark-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 12px 16px;
    white-space: nowrap;
    box-shadow: var(--shadow-md);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.chat-widget:hover .chat-tooltip {
    opacity: 1;
}

.chat-tooltip p {
    color: var(--color-text-bright);
    font-size: 0.85rem;
    margin: 0;
}

.chat-tooltip span {
    color: var(--color-text-secondary);
    font-size: 0.75rem;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    padding: 80px 0 40px;
    background: var(--color-darker);
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 60px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.footer-social {
    display: flex;
    gap: 12px;
}

.footer-social a {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.footer-links h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: white;
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links li a,
.footer-links li span {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    transition: var(--transition);
}

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

.footer-links li i {
    font-size: 0.85rem;
    width: 16px;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
}

.footer-legal {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-legal p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.footer-legal a {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.footer-legal a:hover {
    color: var(--color-primary);
}

/* ==========================================
   Animations
   ========================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0.3;
    }
    25% {
        transform: translateY(-20px) translateX(10px);
        opacity: 0.5;
    }
    50% {
        transform: translateY(-10px) translateX(-10px);
        opacity: 0.3;
    }
    75% {
        transform: translateY(-30px) translateX(5px);
        opacity: 0.4;
    }
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   Mobile Responsive
   ========================================== */
@media (max-width: 1024px) {
    .split-layout {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--color-dark-secondary);
        flex-direction: column;
        justify-content: center;
        gap: 24px;
        padding: 40px;
        transition: var(--transition);
        border-left: 1px solid var(--color-border);
    }

    .nav-links.active {
        right: 0;
    }

    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }

    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }

    .stat-divider {
        width: 60px;
        height: 1px;
    }

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

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

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

    .form-grid textarea {
        grid-column: span 1;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-legal {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .hero-cta .btn {
        width: 100%;
        justify-content: center;
    }

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

/* ==========================================
   Accessibility
   ========================================== */
.skip-link {
    position: absolute;
    top: -48px;
    left: 16px;
    z-index: 2000;
    padding: 10px 18px;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    transition: top 0.2s ease;
}
.skip-link:focus {
    top: 12px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid var(--color-primary-light);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .particle { display: none; }
}