/* ==========================================================================
   OnePercent Design System & Stylesheet
   Color Palette: #C6FF3B (Electric Lime), #050505 (Dark BG), #0E121A (Surface Cards)
   Typography: Poppins (Headings), Inter (Body), Fira Code (Code)
   ========================================================================== */

:root {
    /* Brand Colors */
    --color-primary: #C6FF3B;
    --color-primary-hover: #B0E630;
    --color-primary-glow: rgba(198, 255, 59, 0.25);
    --color-primary-glow-strong: rgba(198, 255, 59, 0.45);
    
    /* Dark Surface Gradients & Solid Colors */
    --color-bg: #050505;
    --color-bg-alt: #080C14;
    --color-surface: #0E121A;
    --color-surface-hover: #141A26;
    --color-surface-border: #1E2536;
    --color-surface-border-glow: rgba(198, 255, 59, 0.5);

    /* Text Colors */
    --color-text-main: #FFFFFF;
    --color-text-body: #A0A0A0;
    --color-text-muted: #666666;

    /* Typography */
    --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-code: 'Fira Code', monospace;

    /* Layout & Utilities */
    --container-max: 1200px;
    --border-radius-sm: 8px;
    --border-radius-md: 14px;
    --border-radius-lg: 20px;
    --border-radius-pill: 9999px;
    --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Header Height */
    --header-height: 80px;
}

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

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

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

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text-main);
    font-weight: 600;
    line-height: 1.25;
}

p {
    color: var(--color-text-body);
}

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

ul {
    list-style: none;
}

/* Global Helpers */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.text-accent {
    color: var(--color-primary);
}

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

.section-padding {
    padding: 6rem 0;
}

/* Section Header Styles */
.section-header {
    max-width: 720px;
    margin: 0 auto 3.5rem auto;
}

.section-header.text-between {
    max-width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    text-align: left;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 1rem;
    background: rgba(198, 255, 59, 0.08);
    border: 1px solid rgba(198, 255, 59, 0.25);
    color: var(--color-primary);
    border-radius: var(--border-radius-pill);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.1rem;
    color: var(--color-text-body);
}

/* Buttons System */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    border: none;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-lg {
    padding: 0.95rem 2rem;
    font-size: 1.05rem;
    border-radius: var(--border-radius-md);
}

.btn-primary {
    background-color: var(--color-primary);
    color: #000000;
    box-shadow: 0 4px 20px var(--color-primary-glow);
}

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

.btn-secondary {
    background-color: var(--color-surface);
    color: var(--color-text-main);
    border: 1px solid var(--color-surface-border);
}

.btn-secondary:hover {
    background-color: var(--color-surface-hover);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-text-main);
    border: 1px solid var(--color-surface-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: 0 0 15px var(--color-primary-glow);
}

.btn-block {
    width: 100%;
}

/* Header & Sticky Navigation */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    background: rgba(5, 5, 5, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

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

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 36px;
    width: 36px;
    object-fit: contain;
    border-radius: 6px;
    box-shadow: 0 0 12px rgba(198, 255, 59, 0.25);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-text-main);
    letter-spacing: -0.02em;
}

/* Mobile & Tablet Breadcrumb Bar */
.breadcrumb-bar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: rgba(14, 18, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-surface-border);
    padding: 0.5rem 0;
    z-index: 990;
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.breadcrumb-list a {
    color: var(--color-text-body);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.breadcrumb-list a:hover {
    color: var(--color-primary);
}

.breadcrumb-list .separator {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.breadcrumb-list .active-crumb {
    color: var(--color-primary);
    font-weight: 600;
}

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

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

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

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text-main);
    font-size: 2rem;
    cursor: pointer;
}

/* Hero Section */
.hero-section {
    padding-top: calc(var(--header-height) + 4rem);
    padding-bottom: 6rem;
    background: radial-gradient(circle at 70% 30%, rgba(198, 255, 59, 0.06) 0%, transparent 60%),
                radial-gradient(circle at 10% 80%, rgba(30, 37, 54, 0.5) 0%, transparent 50%);
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(198, 255, 59, 0.1);
    border: 1px solid rgba(198, 255, 59, 0.3);
    color: var(--color-primary);
    padding: 0.35rem 0.9rem;
    border-radius: var(--border-radius-pill);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.badge-pill.light {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    color: #FFFFFF;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-primary);
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.3); }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: 1.15rem;
    line-height: 1.7;
    margin-bottom: 2.5rem;
    color: var(--color-text-body);
}

.hero-subtitle strong {
    color: var(--color-text-main);
}

.hero-cta-group {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 3.5rem;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-surface-border);
    flex-wrap: wrap;
}

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

.stat-value {
    display: inline-flex;
    align-items: baseline;
    white-space: nowrap;
    line-height: 1;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--color-text-main);
    line-height: 1;
    display: inline;
    white-space: nowrap;
}

.stat-plus {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-primary);
    display: inline;
    white-space: nowrap;
    margin-left: 2px;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-body);
    margin-top: 0.25rem;
}

/* Hero BTP Interactive Visualizer */
.hero-visual {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.btp-node-card {
    position: relative;
    width: 440px;
    height: 440px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(14, 18, 26, 0.9) 0%, rgba(5, 5, 5, 0.95) 70%);
    border: 1px solid var(--color-surface-border);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.8);
}

.core-node {
    width: 130px;
    height: 130px;
    background: var(--color-surface);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    color: var(--color-primary);
    font-weight: 700;
    font-size: 0.85rem;
    box-shadow: 0 0 30px var(--color-primary-glow-strong);
    z-index: 5;
    text-align: center;
    padding: 0.5rem;
}

.core-node i {
    font-size: 2.2rem;
}

.pulse-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 1px dashed rgba(198, 255, 59, 0.2);
    animation: rotate-ring 35s linear infinite;
}

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

.sat-node {
    position: absolute;
    padding: 0.55rem 1rem;
    background: rgba(14, 18, 26, 0.98);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--border-radius-pill);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-main);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.7);
    white-space: nowrap;
    z-index: 6;
}

.sat-node i {
    color: var(--color-primary);
    font-size: 1.15rem;
}

.sat-node:hover {
    border-color: var(--color-primary);
    transform: scale(1.08);
    box-shadow: 0 0 25px var(--color-primary-glow-strong);
}

.sat-1 { top: -18px; left: 50%; transform: translateX(-50%); }
.sat-2 { top: 22%; right: -50px; }
.sat-3 { bottom: 8%; right: -30px; }
.sat-4 { bottom: 8%; left: -30px; }
.sat-5 { top: 22%; left: -50px; }

.node-tooltip {
    margin-top: 2rem;
    padding: 0.75rem 1.25rem;
    background: var(--color-surface);
    border: 1px solid var(--color-primary);
    border-radius: var(--border-radius-md);
    color: var(--color-primary);
    font-size: 0.85rem;
    font-weight: 500;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
    max-width: 320px;
}

/* Card Grids System */
.card-grid {
    display: grid;
    gap: 2rem;
}

.card-grid.col-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* Feature Cards */
.feature-card {
    background: var(--color-surface);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--border-radius-lg);
    padding: 2.25rem;
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
}

.feature-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px var(--color-primary-glow);
}

.feature-card.highlighted-card {
    border-color: rgba(198, 255, 59, 0.4);
    background: linear-gradient(180deg, rgba(198, 255, 59, 0.05) 0%, var(--color-surface) 100%);
}

.card-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--color-primary);
    color: #000000;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: var(--border-radius-pill);
    text-transform: uppercase;
}

.card-icon {
    width: 54px;
    height: 54px;
    background: rgba(198, 255, 59, 0.08);
    border: 1px solid rgba(198, 255, 59, 0.2);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.card-text {
    font-size: 0.95rem;
    color: var(--color-text-body);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.card-features {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    border-top: 1px solid var(--color-surface-border);
    padding-top: 1.25rem;
}

.card-features li {
    font-size: 0.85rem;
    color: var(--color-text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-features li i {
    color: var(--color-primary);
    font-size: 1rem;
}

/* Service Boxes */
.services-section {
    background-color: var(--color-bg-alt);
    border-top: 1px solid var(--color-surface-border);
    border-bottom: 1px solid var(--color-surface-border);
}

.service-box {
    background: var(--color-surface);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--border-radius-lg);
    padding: 2.5rem;
    position: relative;
    transition: var(--transition);
}

.service-box:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
}

.service-num {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    color: rgba(198, 255, 59, 0.2);
    margin-bottom: 1rem;
    line-height: 1;
}

.service-box h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.service-box p {
    font-size: 0.95rem;
    margin-bottom: 1.75rem;
}

.link-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.link-btn:hover {
    gap: 0.7rem;
}

/* Open Source Section */
.filter-tabs {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.25rem;
    background: var(--color-surface);
    border: 1px solid var(--color-surface-border);
    color: var(--color-text-body);
    border-radius: var(--border-radius-pill);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
    background: rgba(198, 255, 59, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.repo-card {
    background: var(--color-surface);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.repo-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.repo-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.repo-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.repo-tag {
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-surface-border);
    padding: 0.2rem 0.6rem;
    border-radius: var(--border-radius-pill);
    color: var(--color-text-body);
}

.repo-title {
    font-family: var(--font-code);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    word-break: break-word;
}

.repo-desc {
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.repo-meta {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 1.25rem;
}

.repo-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.lang-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.lang-dot.groovy { background: #4298B8; }
.lang-dot.ts { background: #3178C6; }
.lang-dot.js { background: #F7DF1E; }
.lang-dot.cds { background: #C6FF3B; }
.lang-dot.json { background: #FF6C37; }
.lang-dot.abap { background: #0088CE; }

.repo-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-main);
    padding-top: 1rem;
    border-top: 1px solid var(--color-surface-border);
}

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

/* Learnings Banner Section */
.learnings-section {
    background: radial-gradient(circle at 90% 10%, rgba(198, 255, 59, 0.08) 0%, transparent 50%);
}

.learnings-banner {
    background: linear-gradient(135deg, rgba(14, 18, 26, 0.9) 0%, rgba(8, 12, 20, 0.95) 100%);
    border: 1px solid rgba(198, 255, 59, 0.3);
    border-radius: var(--border-radius-lg);
    padding: 3.5rem;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: center;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.6);
}

.banner-content h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.4rem);
    font-weight: 700;
    margin: 1rem 0;
}

.banner-content p {
    font-size: 1.05rem;
    margin-bottom: 2rem;
}

.banner-highlights {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2.25rem;
}

.bh-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.95rem;
    color: var(--color-text-main);
}

.bh-item i {
    color: var(--color-primary);
    font-size: 1.2rem;
}

.banner-cta {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
}

.portal-link-sub {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.graphic-card {
    background: #05070A;
    border: 1px solid var(--color-surface-border);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
}

.gc-header {
    background: #0E121A;
    padding: 0.6rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    border-bottom: 1px solid var(--color-surface-border);
}

.gc-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.gc-dot.red { background: #FF5F56; }
.gc-dot.yellow { background: #FFBD2E; }
.gc-dot.green { background: #27C93F; }

.gc-title {
    font-size: 0.75rem;
    font-family: var(--font-code);
    color: var(--color-text-muted);
    margin-left: 0.5rem;
}

.gc-code {
    padding: 1.25rem;
    font-family: var(--font-code);
    font-size: 0.825rem;
    color: var(--color-primary);
    overflow-x: auto;
    line-height: 1.5;
}

/* CTA Box */
.cta-box {
    background: var(--color-surface);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--border-radius-lg);
    padding: 4rem 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.cta-box h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    margin-bottom: 1rem;
}

.cta-box p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
.site-footer {
    background-color: var(--color-bg-alt);
    border-top: 1px solid var(--color-surface-border);
    padding-top: 4rem;
    padding-bottom: 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3.5rem;
}

.footer-desc {
    font-size: 0.9rem;
    margin: 1rem 0 1.5rem 0;
    max-width: 300px;
}

.footer-socials {
    display: flex;
    gap: 0.75rem;
}

.footer-socials a {
    width: 38px;
    height: 38px;
    background: var(--color-surface);
    border: 1px solid var(--color-surface-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-main);
    font-size: 1.2rem;
}

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

.footer-col h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--color-text-main);
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-col ul li, .footer-col ul li a {
    font-size: 0.875rem;
    color: var(--color-text-body);
}

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

.footer-col ul li i {
    color: var(--color-primary);
    margin-right: 0.4rem;
}

.footer-bottom {
    border-top: 1px solid var(--color-surface-border);
    padding-top: 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

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

/* Modal Dialog */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-card {
    background: var(--color-surface);
    border: 1px solid var(--color-primary);
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 520px;
    padding: 2.5rem;
    position: relative;
    box-shadow: 0 0 50px var(--color-primary-glow-strong);
    transform: translateY(20px);
    transition: var(--transition);
}

.modal-overlay.active .modal-card {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: none;
    border: none;
    color: var(--color-text-body);
    font-size: 1.8rem;
    cursor: pointer;
}

.modal-close:hover {
    color: var(--color-primary);
}

.modal-header {
    margin-bottom: 1.75rem;
}

.modal-header h3 {
    font-size: 1.6rem;
    margin-bottom: 0.5rem;
}

.modal-header p {
    font-size: 0.9rem;
}

.modal-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.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: var(--color-bg);
    border: 1px solid var(--color-surface-border);
    border-radius: var(--border-radius-md);
    padding: 0.75rem 1rem;
    color: var(--color-text-main);
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}

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

.form-success {
    text-align: center;
    padding: 2rem 0;
}

.success-icon {
    font-size: 3.5rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.form-success h4 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

/* Global Overflow Protection */
html, body {
    overflow-x: hidden;
    width: 100%;
    position: relative;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .section-padding {
        padding: 4.5rem 0;
    }

    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero-visual {
        margin-top: 1.5rem;
        width: 100%;
    }

    .card-grid.col-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .section-header.text-between {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }

    .learnings-banner {
        grid-template-columns: 1fr;
        padding: 2.5rem;
        gap: 2rem;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .container {
        padding: 0 1.25rem;
    }

    .section-padding {
        padding: 3.5rem 0;
    }

    .hero-section {
        padding-top: calc(var(--header-height) + 2rem);
        padding-bottom: 4rem;
    }

    .hero-title {
        font-size: clamp(2rem, 6.5vw, 2.75rem);
    }

    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 2rem;
    }

    .hero-cta-group {
        flex-direction: column;
        width: 100%;
        gap: 0.85rem;
    }

    .hero-cta-group .btn {
        width: 100%;
    }

    .hero-stats {
        gap: 1.5rem;
        padding-top: 1.5rem;
        justify-content: space-between;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .stat-plus {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.78rem;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: #080C14;
        flex-direction: column;
        justify-content: flex-start;
        padding: 3rem 2rem;
        transition: var(--transition);
        z-index: 1001;
        box-shadow: 0 20px 40px rgba(0,0,0,0.9);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 1.75rem;
        width: 100%;
        text-align: center;
    }

    .nav-link {
        font-size: 1.2rem;
        font-weight: 600;
    }

    .mobile-toggle {
        display: block;
    }

    .header-actions .btn-primary {
        display: none;
    }

    /* Node Card: keep circular shape on mobile, just scale it down */
    .btp-node-card {
        width: 280px;
        height: 280px;
        border-radius: 50%;
        padding: 0;
        gap: 0;
        flex-direction: row;
    }

    .pulse-ring {
        width: 320px;
        height: 320px;
    }

    .core-node {
        width: 90px;
        height: 90px;
        font-size: 0.75rem;
    }

    .core-node i {
        font-size: 1.5rem;
    }

    .sat-node {
        font-size: 0.7rem;
        padding: 0.35rem 0.7rem;
        white-space: nowrap;
    }

    .sat-1 { top: -20px; left: 50%; transform: translateX(-50%); }
    .sat-2 { top: 18%; right: -55px; }
    .sat-3 { bottom: 5%; right: -40px; }
    .sat-4 { bottom: 5%; left: -40px; }
    .sat-5 { top: 18%; left: -55px; }

    .sat-node i {
        font-size: 0.9rem;
    }

    .node-tooltip {
        max-width: 100%;
        font-size: 0.825rem;
        margin-top: 1.25rem;
    }

    .card-grid.col-3 {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }

    .feature-card, .service-box, .repo-card {
        padding: 1.5rem;
    }

    .learnings-banner {
        padding: 1.75rem;
        border-radius: var(--border-radius-md);
    }

    .banner-graphic {
        overflow-x: auto;
    }

    .gc-code {
        font-size: 0.75rem;
        padding: 1rem;
    }

    .cta-box {
        padding: 2.5rem 1.25rem;
    }

    /* Mobile Footer Layout */
    .site-footer {
        padding-top: 3rem;
        padding-bottom: 2rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
        margin-bottom: 2rem;
    }

    .footer-brand {
        background: var(--color-surface);
        border: 1px solid var(--color-surface-border);
        padding: 1.5rem;
        border-radius: var(--border-radius-md);
    }

    .footer-desc {
        font-size: 0.9rem;
        margin: 0.75rem 0 1.25rem 0;
        max-width: 100%;
    }

    .footer-col {
        background: var(--color-surface);
        border: 1px solid var(--color-surface-border);
        padding: 1.25rem 1.5rem;
        border-radius: var(--border-radius-md);
    }

    .footer-col h4 {
        font-size: 1.05rem;
        font-weight: 700;
        margin-bottom: 0.85rem;
        color: var(--color-primary);
        border-bottom: 1px dashed rgba(198, 255, 59, 0.2);
        padding-bottom: 0.5rem;
    }

    .footer-col ul {
        display: flex;
        flex-direction: column;
        gap: 0.65rem;
    }

    .footer-col ul li a, .footer-col ul li {
        font-size: 0.9rem;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        margin-top: 1rem;
        padding-top: 1.5rem;
        border-top: 1px solid var(--color-surface-border);
    }

    .footer-legal {
        justify-content: center;
        gap: 1.5rem;
    }

    .modal-card {
        padding: 1.75rem;
        margin: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
        text-align: center;
    }

    .stat-item {
        align-items: center;
    }

    .filter-tabs {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.4rem 0.9rem;
        font-size: 0.78rem;
    }
}
@media (max-width: 480px) {
    .btp-node-card {
        width: 220px;
        height: 220px;
    }
    .pulse-ring {
        width: 260px;
        height: 260px;
    }
    .core-node {
        width: 75px;
        height: 75px;
        font-size: 0.7rem;
    }
    .sat-node {
        font-size: 0.6rem;
        padding: 0.28rem 0.55rem;
    }
    .sat-2 { right: -58px; }
    .sat-3 { right: -45px; }
    .sat-4 { left: -45px; }
    .sat-5 { left: -58px; }
}