/* --- General Setup & Theming --- */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

:root {
    --dark-bg: #0d1117;
    --primary-card-bg: #161b22;
    --primary-accent: #3b82f6; /* A trustworthy blue */
    --secondary-accent: #ca8a04; /* A warm, reliable gold */
    --text-primary: #f0f0f0;
    --text-secondary: #a0a0b0;
    --border-color: rgba(255, 255, 255, 0.1);
    --glow-color: rgba(59, 130, 246, 0.5);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-primary);
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
}

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

h1, h2, h3 {
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

h2 .gradient-text {
    background: linear-gradient(90deg, var(--primary-accent), var(--text-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}


p {
    line-height: 1.8;
    color: var(--text-secondary);
}

.section-subtitle {
    text-align:center; 
    max-width:800px; 
    margin:-2rem auto 3rem auto;
    color: var(--text-secondary);
}

section {
    padding: 6rem 0;
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

.gradient-text {
     background: linear-gradient(90deg, var(--primary-accent), var(--secondary-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--primary-accent);
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    border-radius: 50px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
    box-shadow: 0 5px 20px rgba(0,0,0,0.3);
    border: 1px solid var(--primary-accent);
}

.cta-button:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--glow-color);
    background-color: #4b8ef7;
}

/* --- Navigation Bar --- */
nav {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    padding: 1.5rem 2rem;
    z-index: 1000;
    background: rgba(13, 17, 23, 0.7);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: background 0.3s ease;
}

.nav-container {
     max-width: 1200px;
     margin: 0 auto;
     display: flex;
     justify-content: space-between;
     align-items: center;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.nav-logo {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
}

.logo-image {
    height: 80px;
    width: auto;
    filter: brightness(0) invert(1);
    transition: filter 0.3s ease;
}

.logo-image:hover {
    filter: brightness(0) invert(0.8);
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 600;
}

.nav-links a:hover {
    color: var(--primary-accent);
}

.language-switcher {
    margin-left: 1rem;
    position: relative;
}

.lang-dropdown {
    position: relative;
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.3rem 0.8rem;
    margin: 0;
    cursor: pointer;
    font-family: 'Poppins', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    transition: color 0.3s ease;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    min-width: 50px;
    height: 100%;
}

.lang-btn:hover {
    color: var(--primary-accent);
}

.dropdown-arrow {
    font-size: 0.7rem;
    transition: transform 0.3s ease;
}

.lang-dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}

.lang-dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--primary-card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.3);
    min-width: 140px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    margin-top: 0.5rem;
}

.lang-dropdown.active .lang-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
    border-radius: 4px;
    margin: 0.2rem;
}

.lang-option:hover {
    background-color: rgba(59, 130, 246, 0.1);
}

.lang-option.active {
    background-color: rgba(59, 130, 246, 0.2);
    color: var(--primary-accent);
}

.lang-flag {
    font-size: 1.2rem;
}

.lang-name {
    font-size: 0.9rem;
    font-weight: 500;
}

/* RTL Support for content only (navbar stays LTR) */
.main-content[dir="rtl"] {
    direction: rtl;
    text-align: right;
}

.main-content[dir="rtl"] .section-subtitle {
    text-align: center;
}

.main-content[dir="rtl"] h2 {
    text-align: center;
}

.main-content[dir="rtl"] .hero-content {
    text-align: center;
}

.main-content[dir="rtl"] .use-case-features li {
    padding-left: 0;
    padding-right: 25px;
}

.main-content[dir="rtl"] .use-case-features li::before {
    left: auto;
    right: 0;
}


/* --- Hero Section --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px; /* Add padding to account for fixed navbar */
}

#hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero .subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 2.5rem;
}

/* --- Services Section --- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--primary-card-bg);
    padding: 2.5rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, border-color 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-accent);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-accent);
    display: inline-block;
    background: rgba(59, 130, 246, 0.1);
    padding: 1rem;
    border-radius: 12px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* --- Use Cases Section --- */
.use-cases-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
}
.use-case-card {
    background-color: var(--primary-card-bg);
    border-radius: 15px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding: 2rem;
    align-items: center;
}
.use-case-card.flagship {
    border-left: 5px solid var(--secondary-accent);
}

.use-case-icon {
    font-size: 4rem;
    flex-shrink: 0;
}

.use-case-content h3 {
    color: var(--secondary-accent);
    margin-bottom: 0.5rem;
}

.use-case-features {
    list-style: none;
    padding-left: 0;
    margin-top: 1rem;
}
.use-case-features li {
    position: relative;
    padding-left: 25px;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}
.use-case-features li::before {
    content: '✓';
    color: var(--primary-accent);
    position: absolute;
    left: 0;
    font-weight: 700;
}


/* --- D3 Flow Section --- */
#process-flow-container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

#d3-flow {
     width: 100%;
     height: 600px;
}

.d3-tooltip {
    position: absolute;
    text-align: center;
    width: auto;
    max-width: 250px;
    padding: 12px;
    background: var(--primary-card-bg);
    border: 1px solid var(--primary-accent);
    color: var(--text-primary);
    border-radius: 8px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    font-size: 0.9rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.4);
}

.node-group {
     cursor: pointer;
}

.node-circle {
    transition: transform 0.3s ease, fill 0.3s ease, r 0.3s ease;
    stroke: var(--primary-accent);
    stroke-width: 2px;
}

.node-label {
    fill: var(--text-secondary);
    font-size: 14px;
    pointer-events: none;
    text-anchor: middle;
    font-weight: 600;
    transition: fill 0.3s ease;
}
.link-path {
    fill: none;
    stroke: var(--border-color);
    stroke-width: 2px;
    stroke-dasharray: 6 6;
}

/* --- Security Section --- */
.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}
.security-feature {
    text-align: center;
}
 .security-feature .feature-icon {
    font-size: 3rem;
    color: var(--secondary-accent);
    margin-bottom: 1rem;
}
 .security-feature h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

/* --- About Us Section --- */
#about {
    background-color: var(--primary-card-bg);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}
.about-content {
    display: flex;
    align-items: center;
    gap: 3rem;
    flex-direction: column;
}
 .about-image {
    font-size: 8rem; /* Placeholder for an image or large icon */
    flex-shrink: 0;
    opacity: 0.5;
}

/* --- Contact Section --- */
.contact-form {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 1rem;
    background: var(--primary-card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-accent);
    box-shadow: 0 0 15px var(--glow-color);
}

.contact-form textarea {
    min-height: 150px;
    resize: vertical;
}

.contact-form button {
    width: auto;
    border: none;
    cursor: pointer;
    align-self: center;
}
/* --- Contact Info Section --- */
.contact-info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; max-width: 700px; margin: 2rem auto 0; }
.contact-card { background-color: var(--primary-card-bg); padding: 2rem; border-radius: 15px; border: 1px solid var(--border-color); text-align: center; text-decoration: none; transition: all 0.3s ease; }
.contact-card:hover { transform: translateY(-10px); border-color: var(--primary-accent); box-shadow: 0 10px 30px var(--glow-color); }
.contact-icon { font-size: 3rem; margin-bottom: 1rem; }
.contact-card h3 { color: var(--text-primary); margin-bottom: 0.5rem; }
.contact-card p { color: var(--primary-accent); font-weight: 600; }
/* --- Footer --- */
footer {
    padding: 3rem 0;
    text-align: center;
    background-color: var(--dark-bg);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

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

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.8rem; }
    h2 { font-size: 2.2rem; }
    .nav-links { display: none; } /* Simplified for demo */
    .hero { 
        text-align: center; 
        padding: 4rem 1rem 4rem 1rem; 
        min-height: auto;
        margin-top: 120px; /* Increased margin for more space below navbar */
    }
    section { padding: 4rem 0; }
    #d3-flow { height: 500px; }
    .use-case-card { flex-direction: column; text-align: center; }
    .about-content { flex-direction: column; text-align: center; }
}