/* ==========================================================================
   Design System & Global Variables - СмартРесурс Premium B2B
   ========================================================================== */
:root {
    /* Rich, Deep Forest Green / Matte Emerald Palette */
    --bg-dark: #05120F;
    --bg-dark-alt: #091F1A;
    --bg-card: rgba(14, 27, 25, 0.55);
    --bg-glass: rgba(255, 255, 255, 0.01);
    --border-glass: rgba(255, 255, 255, 0.04);
    --border-glass-active: rgba(16, 194, 149, 0.25);
    
    /* Clean, Noble Accents (Instead of screaming neon) */
    --accent-teal: #10c295;
    --accent-teal-glow: rgba(16, 194, 149, 0.15);
    --accent-mint: #d1f3e7;
    --accent-slate: #1c2e2a;
    
    /* Text Colors (High Contrast & Soft) */
    --text-primary: #f2f6f5;
    --text-secondary: #90a5a1;
    --text-muted: #536b66;
    
    /* Premium Fonts (Lora Serif for Classic Authority) */
    --font-primary: 'Inter', sans-serif;
    --font-heading: 'Lora', serif;
    
    /* Layout */
    --container-width: 1200px;
    --transition-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-dark);
}

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    background-color: var(--bg-dark);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    letter-spacing: -0.1px;
}

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

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

li {
    list-style: none;
}

/* Custom Premium Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: var(--accent-slate);
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-teal);
}

/* ==========================================================================
   Section Layouts & Block Separation
   ========================================================================== */
section {
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid rgba(16, 194, 149, 0.06);
}

.hero-section, 
.services-section, 
.stack-section {
    background-color: var(--bg-dark);
}

.calculator-section, 
.cases-section, 
.contact-section {
    background-color: var(--bg-dark-alt);
}

/* ==========================================================================
   Thin Geometry Background Circles (Consistent technical blueprint style)
   ========================================================================== */
.circle-line {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.03);
    pointer-events: none;
    z-index: -1;
    transition: var(--transition-smooth);
}

.circle-one {
    width: 800px;
    height: 800px;
    top: -250px;
    left: -250px;
    border-color: rgba(16, 194, 149, 0.03);
    animation: rotateCircle 180s linear infinite;
}

.circle-two {
    width: 600px;
    height: 600px;
    top: 20%;
    right: -150px;
    border-color: rgba(255, 255, 255, 0.02);
    animation: rotateCircle 120s linear infinite reverse;
}

.circle-three {
    width: 750px;
    height: 750px;
    top: -200px;
    right: 15%;
    border-color: rgba(16, 194, 149, 0.02);
}

.circle-four {
    width: 500px;
    height: 500px;
    bottom: -150px;
    left: -100px;
    border-color: rgba(255, 255, 255, 0.015);
}

.circle-five {
    width: 900px;
    height: 900px;
    top: -300px;
    left: -200px;
    border-color: rgba(255, 255, 255, 0.015);
    animation: rotateCircle 240s linear infinite;
}

.circle-six {
    width: 550px;
    height: 550px;
    bottom: 10%;
    right: -100px;
    border-color: rgba(16, 194, 149, 0.03);
}

.circle-seven {
    width: 650px;
    height: 650px;
    top: 15%;
    left: -150px;
    border-color: rgba(16, 194, 149, 0.02);
}

.circle-eight {
    width: 800px;
    height: 800px;
    bottom: -250px;
    right: -100px;
    border-color: rgba(255, 255, 255, 0.015);
    animation: rotateCircle 200s linear infinite reverse;
}

.circle-nine {
    width: 500px;
    height: 500px;
    top: -100px;
    right: 20%;
    border-color: rgba(255, 255, 255, 0.02);
}

.circle-ten {
    width: 700px;
    height: 700px;
    bottom: -200px;
    left: -150px;
    border-color: rgba(16, 194, 149, 0.025);
    animation: rotateCircle 160s linear infinite;
}

.circle-eleven {
    width: 850px;
    height: 850px;
    top: -250px;
    left: -150px;
    border-color: rgba(16, 194, 149, 0.02);
}

.circle-twelve {
    width: 600px;
    height: 600px;
    bottom: -150px;
    right: -100px;
    border-color: rgba(255, 255, 255, 0.02);
    animation: rotateCircle 220s linear infinite reverse;
}

/* Decorative Glowing Teal Nodes (Matches the reference screenshot exactly) */
.circle-line::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background-color: var(--accent-teal);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--accent-teal);
    opacity: 0.85;
    z-index: 1;
    display: none; /* Hidden by default */
    animation: pulseDot 4s infinite ease-in-out;
}

/* Enable, position and animate dots on specific circles (Staggered pulsing) */
.circle-one::after {
    display: block;
    bottom: 15%;
    right: 15%;
    animation-delay: 0.5s;
    animation-duration: 3.5s;
}

.circle-two::after {
    display: block;
    top: 62%;
    left: 4.5%;
    width: 14px;
    height: 14px;
    box-shadow: 0 0 18px var(--accent-teal);
    animation-delay: 1.2s;
    animation-duration: 4.5s;
}

.circle-three::after {
    display: block;
    top: 25%;
    left: 25%;
    animation-delay: 2s;
    animation-duration: 5s;
}

.circle-five::after {
    display: block;
    bottom: 30%;
    right: 30%;
    animation-delay: 0.8s;
    animation-duration: 3.8s;
}

.circle-six::after {
    display: block;
    top: 45%;
    left: -5px;
    animation-delay: 1.5s;
    animation-duration: 4.2s;
}

.circle-eight::after {
    display: block;
    top: 35%;
    left: 35%;
    animation-delay: 2.3s;
    animation-duration: 4.8s;
}

.circle-ten::after {
    display: block;
    bottom: 40%;
    right: -5px;
    animation-delay: 0.2s;
    animation-duration: 3.6s;
}

.circle-eleven::after {
    display: block;
    top: 50%;
    right: 20%;
    animation-delay: 1.7s;
    animation-duration: 4.4s;
}

.circle-twelve::after {
    display: block;
    bottom: 60%;
    left: -5px;
    animation-delay: 2.5s;
    animation-duration: 5.2s;
}

/* ==========================================================================
   Reusable UI Components & Typography
   ========================================================================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* Subtle, Elegant Gradient Text */
.text-gradient {
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-teal) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.text-gradient-green {
    background: linear-gradient(135deg, var(--accent-teal) 0%, #0c9e75 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 5px 14px;
    border-radius: 4px;
    background: rgba(16, 194, 149, 0.06);
    border: 1px solid rgba(16, 194, 149, 0.15);
    color: var(--accent-teal);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 24px;
    font-family: var(--font-primary);
}

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

/* Buttons (Classic luxury minimal style) */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-primary);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 13px 26px;
    border-radius: 8px;
    cursor: pointer;
    border: none;
    transition: var(--transition-smooth);
    letter-spacing: -0.1px;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.85rem;
    border-radius: 6px;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-dark);
}

.btn-primary:hover {
    transform: translateY(-2px);
    background: #ffffff;
    box-shadow: 0 10px 25px rgba(255, 255, 255, 0.08);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-glass-active);
}

.btn-outline:hover {
    background: rgba(16, 194, 149, 0.05);
    border-color: var(--accent-teal);
}

.btn-block {
    display: flex;
    width: 100%;
}

/* Section Header Styles (Classic, Large, Serif) */
.section-header {
    margin-bottom: 70px;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: 2.6rem;
    font-weight: 400; /* Classy look uses lighter weight serifs */
    line-height: 1.25;
    margin-bottom: 20px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    font-weight: 300;
}

/* ==========================================================================
   Navigation Header
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    transition: var(--transition-smooth);
    border-bottom: 1px solid transparent;
}

.header.sticky {
    background: rgba(6, 20, 17, 0.85);
    border-bottom: 1px solid var(--border-glass);
    backdrop-filter: blur(16px);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 24px;
    transition: var(--transition-smooth);
}

.header.sticky .header-container {
    padding: 16px 24px;
}

/* Logo */
.logo {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.4rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.logo-light {
    font-weight: 400;
    opacity: 0.8;
}

/* Menu */
.nav-list {
    display: flex;
    gap: 36px;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--text-secondary);
    position: relative;
    padding: 6px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-teal);
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--text-primary);
}

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

.nav-link.active {
    color: var(--text-primary);
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Header Contacts - Desktop & Minimalist styling */
.header-contacts-minimal {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-right: 8px;
}

.header-phone {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: var(--transition-smooth);
    letter-spacing: -0.2px;
}

.header-phone:hover {
    color: var(--accent-teal);
}

.header-messengers {
    display: flex;
    gap: 8px;
    align-items: center;
}

.header-messenger-link {
    font-size: 0.75rem;
    font-weight: 600;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.header-messenger-link.wa {
    background: rgba(37, 211, 102, 0.05);
    color: rgba(37, 211, 102, 0.85);
    border-color: rgba(37, 211, 102, 0.15);
}

.header-messenger-link.wa:hover {
    background: #25d366;
    color: #05120F;
    border-color: #25d366;
    box-shadow: 0 0 10px rgba(37, 211, 102, 0.3);
}

.header-messenger-link.tg {
    background: rgba(16, 194, 149, 0.05);
    color: rgba(16, 194, 149, 0.85);
    border-color: rgba(16, 194, 149, 0.15);
}

.header-messenger-link.tg:hover {
    background: var(--accent-teal);
    color: #05120F;
    border-color: var(--accent-teal);
    box-shadow: 0 0 10px rgba(16, 194, 149, 0.3);
}

/* Nav Mobile Contacts - Hidden on desktop */
.nav-mobile-contacts {
    display: none;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 20px;
    height: 14px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.mobile-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-smooth);
}

/* ==========================================================================
   Hero Section (Matching screenshot exactly)
   ========================================================================== */
.hero-section {
    padding: 180px 0 120px;
    position: relative;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 50px;
    align-items: center;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 400; /* Elegant light-medium serif weight */
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.4rem;
    font-family: var(--font-primary);
    color: var(--text-primary);
    margin-bottom: 24px;
    font-weight: 300;
}

.hero-description {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.6;
    max-width: 580px;
    font-weight: 300;
}

.hero-actions-group {
    display: flex;
    gap: 16px;
}

/* Premium Animated Vector Workflow Layout */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.workflow-container {
    width: 100%;
    max-width: 460px;
    border-radius: 16px;
    overflow: hidden;
    background: rgba(14, 27, 25, 0.45);
    border: 1px solid var(--border-glass);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
    transition: var(--transition-smooth);
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
}

.workflow-container:hover {
    transform: translateY(-5px);
    border-color: var(--border-glass-active);
    box-shadow: 0 40px 80px rgba(16, 194, 149, 0.15);
}

.workflow-svg {
    width: 100%;
    height: auto;
    display: block;
}

/* Webflow Nodes Interaction */
.workflow-node {
    cursor: pointer;
}

.workflow-node circle {
    transition: var(--transition-smooth);
}

.workflow-node:hover circle:first-of-type {
    stroke: var(--accent-teal);
    fill: rgba(16, 194, 149, 0.08);
}

.workflow-node text {
    transition: var(--transition-smooth);
}

.workflow-node:hover text {
    fill: #ffffff;
}

/* ==========================================================================
   Interactive ROI Calculator Section
   ========================================================================== */
.calculator-section {
    padding: 120px 0;
    position: relative;
}

.calculator-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.calc-box {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 40px;
    backdrop-filter: blur(12px);
    transition: var(--transition-smooth);
}

.inputs-box:hover {
    border-color: rgba(255, 255, 255, 0.08);
}

.calc-visual-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-glass);
}

.radar-scanner-wrapper {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 1px solid rgba(16, 194, 149, 0.2);
    background: rgba(14, 27, 25, 0.65);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    padding: 2px;
}

.calc-box:hover .radar-scanner-wrapper {
    border-color: var(--accent-teal);
    box-shadow: 0 0 16px rgba(16, 194, 149, 0.3);
}

.radar-scanner-svg {
    width: 100%;
    height: 100%;
    display: block;
}

.radar-sweep {
    transform-origin: 50px 50px;
    animation: radarSweep 4s linear infinite;
}

.radar-blip {
    animation: blipFade 2s infinite ease-in-out;
}

.radar-blip.blip-1 {
    animation-delay: 0.4s;
}

.radar-blip.blip-2 {
    animation-delay: 1.4s;
}

.visual-header-text h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.visual-header-text p {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
    font-weight: 300;
}

.calc-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 30px;
    border-left: 2px solid var(--accent-teal);
    padding-left: 14px;
    line-height: 1;
}

.input-group {
    margin-bottom: 32px;
}

.input-group:last-child {
    margin-bottom: 0;
}

.input-labels {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.input-labels label {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.range-val {
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--accent-teal);
    background: rgba(16, 194, 149, 0.06);
    padding: 4px 10px;
    border-radius: 4px;
    border: 1px solid rgba(16, 194, 149, 0.15);
}

.input-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 8px;
    line-height: 1.4;
}

/* Elegant Sliders */
.range-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    outline: none;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--text-primary);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
    transition: transform 0.1s;
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: var(--accent-teal);
}

/* Results Box */
.results-box {
    border-color: var(--border-glass-active);
}

.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.result-card {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 24px;
}

.result-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
}

.result-value {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 400;
    margin-bottom: 4px;
}

.result-value.text-accent {
    color: var(--accent-teal);
}

.result-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.total-savings-card {
    background: rgba(16, 194, 149, 0.03);
    border: 1px solid rgba(16, 194, 149, 0.15);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 30px;
}

.total-label {
    font-size: 0.9rem;
    color: var(--accent-teal);
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
}

.total-value {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 400;
    color: #fff;
    margin-bottom: 12px;
}

/* Progress bar inside total card */
.progress-bar-container {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    margin-bottom: 12px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--accent-teal);
    border-radius: 10px;
    transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.total-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ==========================================================================
   Services Section
   ========================================================================== */
.services-section {
    padding: 100px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 40px;
    backdrop-filter: blur(12px);
    transition: var(--transition-smooth);
}

.service-card.visual-card {
    display: flex;
    gap: 30px;
    align-items: center;
    background: linear-gradient(135deg, rgba(14, 27, 25, 0.7) 0%, rgba(5, 18, 15, 0.4) 100%);
    border: 1px solid var(--border-glass-active);
}

.visual-card-image-wrapper {
    flex-shrink: 0;
    width: 140px;
    height: 140px;
    border-radius: 12px;
    overflow: hidden;
    background: rgba(5, 18, 15, 0.65);
    border: 1px solid rgba(16, 194, 149, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    transition: var(--transition-smooth);
}

.service-card.visual-card:hover .visual-card-image-wrapper {
    border-color: var(--accent-teal);
    box-shadow: 0 0 16px rgba(16, 194, 149, 0.25);
}

.service-net-svg {
    width: 100%;
    height: 100%;
    display: block;
}

.net-node {
    transform-origin: center;
    transform-box: fill-box;
    transition: var(--transition-smooth);
}

.node-center {
    animation: centerPulse 3s infinite ease-in-out;
}

.node-up {
    animation: upPulse 4s infinite ease-in-out;
}

.node-down {
    animation: downPulse 4s infinite ease-in-out;
}

.node-left {
    animation: leftPulse 3.5s infinite ease-in-out;
}

.node-right {
    animation: rightPulse 3.5s infinite ease-in-out;
}

.visual-card-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.visual-card-content h3 {
    margin-bottom: 12px;
}

.visual-card-content p {
    margin-bottom: 0;
}

.service-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-glass-active);
}

.service-icon-wrapper {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    background: rgba(16, 194, 149, 0.04);
    border: 1px solid rgba(16, 194, 149, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-teal);
    margin-bottom: 24px;
    transition: var(--transition-smooth);
}

.service-card:hover .service-icon-wrapper {
    background: var(--accent-teal);
    color: var(--bg-dark);
}

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

.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 400;
    margin-bottom: 16px;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 24px;
    line-height: 1.6;
    font-weight: 300;
}

.service-bullets {
    display: flex;
    flex-direction: column;
    gap: 12px;
    border-top: 1px solid var(--border-glass);
    padding-top: 20px;
}

.service-bullets li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--text-primary);
    font-weight: 400;
}

.service-bullets li::before {
    content: '•';
    color: var(--accent-teal);
    font-weight: 900;
}

/* ==========================================================================
   Case Studies Section
   ========================================================================== */
.cases-section {
    padding: 100px 0;
}

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

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    overflow: hidden;
    backdrop-filter: blur(12px);
    transition: var(--transition-smooth);
}

.case-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.1);
}

.case-header-img {
    height: 120px;
    background: linear-gradient(130deg, rgba(16, 194, 149, 0.08) 0%, rgba(5, 20, 17, 0) 100%);
    padding: 24px;
    display: flex;
    align-items: flex-end;
    border-bottom: 1px solid var(--border-glass);
}

.case-header-img.case-bg-2 {
    background: linear-gradient(130deg, rgba(255, 255, 255, 0.03) 0%, rgba(5, 20, 17, 0) 100%);
}

.case-header-img.case-bg-3 {
    background: linear-gradient(130deg, rgba(16, 194, 149, 0.12) 0%, rgba(5, 20, 17, 0) 100%);
}

.case-badge {
    background: rgba(5, 20, 17, 0.8);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.case-body {
    padding: 30px;
}

.case-body h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 12px;
}

.case-text {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 24px;
    line-height: 1.5;
    font-weight: 300;
}

.case-results {
    border-top: 1px solid var(--border-glass);
    padding-top: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.case-stat {
    display: flex;
    flex-direction: column;
}

.stat-num {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 400;
    color: var(--accent-teal);
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-top: 2px;
    line-height: 1.3;
}

/* ==========================================================================
   Tools Section (Renamed from Stack as requested)
   ========================================================================== */
.stack-section {
    padding: 100px 0;
}

.stack-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.stack-item {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 24px 16px;
    text-align: center;
    backdrop-filter: blur(8px);
    transition: var(--transition-smooth);
}

.stack-item:hover {
    background: rgba(16, 194, 149, 0.02);
    border-color: var(--border-glass-active);
    transform: translateY(-3px);
}

.stack-icon-placeholder {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 400;
    display: block;
    margin-bottom: 12px;
}

.stack-item h4 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
}

.stack-item p {
    font-size: 0.7rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* ==========================================================================
   Contact / Lead Capture Section
   ========================================================================== */
.contact-section {
    padding: 100px 0 140px;
    position: relative;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 60px;
    align-items: start;
}

.contact-info h2 {
    font-family: var(--font-heading);
    font-size: 2.6rem;
    font-weight: 400;
    line-height: 1.25;
    margin-bottom: 20px;
}

.contact-desc {
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-weight: 300;
}

.contact-benefits-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.item-icon {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: rgba(16, 194, 149, 0.06);
    border: 1px solid rgba(16, 194, 149, 0.15);
    color: var(--accent-teal);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
    margin-top: 2px;
    font-size: 0.85rem;
}

.benefit-item div {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    font-weight: 300;
}

.benefit-item strong {
    color: var(--text-primary);
    font-weight: 500;
}

/* Social Buttons */
.social-links-container {
    border-top: 1px solid var(--border-glass);
    padding-top: 30px;
}

.social-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 16px;
}

.social-buttons {
    display: flex;
    gap: 16px;
}

.social-btn {
    padding: 11px 22px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
}

.wa-btn {
    background: rgba(37, 211, 102, 0.05);
    color: #25d366;
    border: 1px solid rgba(37, 211, 102, 0.15);
}

.wa-btn:hover {
    background: #25d366;
    color: #05120F;
    border-color: #25d366;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.15);
}

.tg-btn {
    background: rgba(16, 194, 149, 0.06);
    color: var(--accent-teal);
    border: 1px solid rgba(16, 194, 149, 0.15);
}

.tg-btn:hover {
    background: var(--accent-teal);
    color: var(--bg-dark);
    transform: translateY(-1px);
}

/* Contact Form Card */
.contact-form-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 40px;
    backdrop-filter: blur(12px);
    position: relative;
    box-shadow: 0 30px 60px rgba(0,0,0,0.4);
}

.form-title {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 400;
    margin-bottom: 24px;
}

.lead-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input, 
.form-group select, 
.form-group textarea {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--border-glass);
    border-radius: 6px;
    padding: 11px 14px;
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-smooth);
}

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

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    border-color: var(--accent-teal);
    background: rgba(255, 255, 255, 0.02);
}

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

.btn-submit {
    margin-top: 8px;
}

.form-privacy {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-align: center;
}

/* Spinner for submit button loading */
.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-top: 2px solid var(--bg-dark);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Background concentric circles slow rotation */
@keyframes rotateCircle {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Background dots subtle organic pulse */
@keyframes pulseDot {
    0%, 100% { 
        transform: scale(1); 
        box-shadow: 0 0 10px var(--accent-teal); 
        opacity: 0.8; 
    }
    50% { 
        transform: scale(1.3); 
        box-shadow: 0 0 22px var(--accent-teal), 0 0 35px rgba(16, 194, 149, 0.5); 
        opacity: 1; 
    }
}

/* Radar scope scanning sweep */
@keyframes radarSweep {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Radar scan blip dots fade-in-out effect */
@keyframes blipFade {
    0%, 100% { opacity: 0.15; transform: scale(0.85); }
    50% { opacity: 1; transform: scale(1.15); }
}

/* Neural node breathing pulses */
@keyframes centerPulse {
    0%, 100% { transform: scale(1); filter: drop-shadow(0 0 2px var(--accent-teal)); }
    50% { transform: scale(1.25); filter: drop-shadow(0 0 8px var(--accent-teal)); }
}

@keyframes upPulse {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-4px) scale(1.1); }
}

@keyframes downPulse {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(4px) scale(1.1); }
}

@keyframes leftPulse {
    0%, 100% { transform: translateX(0) scale(1); }
    50% { transform: translateX(-4px) scale(1.1); }
}

@keyframes rightPulse {
    0%, 100% { transform: translateX(0) scale(1); }
    50% { transform: translateX(4px) scale(1.1); }
}

.hidden {
    display: none !important;
}

/* Success Card */
.form-success-card {
    text-align: center;
    padding: 20px 0;
}

.success-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(16, 194, 149, 0.04);
    border: 1px solid rgba(16, 194, 149, 0.15);
    color: var(--accent-teal);
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.form-success-card h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 400;
    margin-bottom: 12px;
}

.form-success-card p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 30px;
    line-height: 1.5;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    border-top: 1px solid rgba(16, 194, 149, 0.08);
    padding: 60px 0;
    background: var(--bg-dark);
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.footer-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1.1fr;
    gap: 60px;
}

.footer-brand .logo {
    display: inline-block;
    margin-bottom: 16px;
}

.footer-desc {
    line-height: 1.5;
    font-weight: 300;
}

.footer-links h4,
.footer-contacts h4 {
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-weight: 400;
    font-size: 1rem;
    margin-bottom: 20px;
}

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

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

.footer-contacts p {
    margin-bottom: 12px;
    font-weight: 300;
}

.footer-copyright {
    border-top: 1px solid rgba(255,255,255,0.02);
    padding-top: 20px;
    margin-top: 20px;
    color: var(--text-muted);
}

/* ==========================================================================
   Responsive Adaptation
   ========================================================================== */

/* 1024px Screen */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions-group {
        justify-content: center;
    }
    
    .calculator-container {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .stack-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .footer-container {
        grid-template-columns: 1fr 1fr;
    }
}

/* 768px Tablet & Mobile Menu Toggle */
@media (max-width: 768px) {
    .section-header h2, .contact-info h2 {
        font-size: 2.1rem;
    }
    
    .hero-title {
        font-size: 2.6rem;
    }
    
    /* Navigation toggle */
    .mobile-toggle {
        display: flex;
    }
    
    .header-contacts-minimal {
        display: none !important;
    }

    .nav {
        position: fixed;
        top: -100%;
        left: 0;
        width: 100%;
        background: rgba(6, 20, 17, 0.98);
        backdrop-filter: blur(20px);
        padding: 40px 24px;
        border-bottom: 1px solid var(--border-glass);
        transition: var(--transition-smooth);
        z-index: 99;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    
    .nav.active {
        top: 68px;
    }
    
    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 24px;
    }
    
    .header-actions .btn-outline {
        display: none;
    }

    .nav-mobile-contacts {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 16px;
        margin-top: 40px;
        padding-top: 30px;
        border-top: 1px solid var(--border-glass);
        width: 100%;
        max-width: 280px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .mobile-phone {
        font-family: var(--font-heading);
        font-size: 1.25rem;
        font-weight: 500;
        color: var(--text-primary);
        transition: var(--transition-smooth);
    }
    
    .mobile-phone:hover {
        color: var(--accent-teal);
    }
    
    .mobile-messengers {
        display: flex;
        gap: 12px;
        width: 100%;
        justify-content: center;
    }
    
    .mobile-messenger-link {
        flex: 1;
        max-width: 120px;
        padding: 10px 14px;
        font-size: 0.85rem;
        font-weight: 500;
        border-radius: 6px;
        text-align: center;
        transition: var(--transition-smooth);
        border: 1px solid transparent;
    }
    
    .mobile-messenger-link.wa {
        background: rgba(37, 211, 102, 0.05);
        color: #25d366;
        border-color: rgba(37, 211, 102, 0.15);
    }
    
    .mobile-messenger-link.wa:hover {
        background: #25d366;
        color: #05120F;
        border-color: #25d366;
    }
    
    .mobile-messenger-link.tg {
        background: rgba(16, 194, 149, 0.05);
        color: var(--accent-teal);
        border-color: rgba(16, 194, 149, 0.15);
    }
    
    .mobile-messenger-link.tg:hover {
        background: var(--accent-teal);
        color: #05120F;
        border-color: var(--accent-teal);
    }
    
    .services-grid, .cases-grid, .stack-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card.visual-card {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .visual-card-image-wrapper {
        margin: 0 auto;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.1rem;
    }
    
    .calc-box, .contact-form-card {
        padding: 24px;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .total-value {
        font-size: 1.8rem;
    }
    
    .social-buttons {
        flex-direction: column;
    }
}