/**
 * SIIEA.ai Two-Tone Theme
 * A sleek, modern theme with a simple two-tone color scheme
 */

:root {
    /* Primary Colors */
    --dark-blue: #0a192f;  /* Dark navy background */
    --light-blue: #3a86ff; /* Main accent color */
    
    /* Variations of the blues for depth */
    --dark-blue-lighter: #162b4d;
    --dark-blue-lightest: #213864;
    --light-blue-darker: #2667cc;
    --light-blue-lightest: #73a7ff;
    
    /* Text colors */
    --text-primary: #ffffff;
    --text-secondary: #ccd6f6;
    --text-tertiary: #8892b0;
    
    /* Additional helpers */
    --transparent-dark: rgba(10, 25, 47, 0.7);
    --transparent-light: rgba(58, 134, 255, 0.2);
}

/* Core body styles */
body {
    background-color: var(--dark-blue);
    color: var(--text-primary);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
}

h1, h2 {
    background: linear-gradient(90deg, var(--light-blue), var(--light-blue-lightest));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.highlight {
    color: var(--light-blue);
}

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

/* Hero subtitle styling */
.hero-subtitle {
    color: var(--text-primary);
    font-size: 1.8rem;
    font-weight: 300;
    letter-spacing: 1px;
    margin-bottom: 40px;
    position: relative;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.4;
    padding-bottom: 15px;
}

.hero-subtitle::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--light-blue), transparent);
}

/* Links */
a {
    color: var(--light-blue);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--light-blue-lightest);
}

/* Buttons */
.btn-primary {
    background: var(--light-blue);
    color: var(--text-primary);
    border: none;
}

.btn-primary:hover {
    background: var(--light-blue-darker);
}

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

.btn-secondary:hover {
    background: var(--transparent-light);
}

/* Logo styling */
.logo {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(90deg, var(--light-blue), var(--light-blue-lightest));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.logo::after {
    content: '.ai';
    font-weight: 400;
    color: var(--light-blue);
    background: none;
    -webkit-background-clip: initial;
    background-clip: initial;
}

/* Navigation */
.navbar {
    background-color: var(--transparent-dark);
    border-bottom: 1px solid var(--transparent-light);
}

.navbar.scrolled {
    background-color: var(--transparent-dark);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--light-blue);
}

.nav-menu a {
    color: var(--text-primary);
}

.nav-menu a:hover, 
.nav-menu a:focus {
    color: var(--light-blue);
}

/* Feature Buttons */
.feature-button {
    background: var(--transparent-dark);
    border: 1px solid var(--light-blue);
    color: var(--text-primary);
    border-radius: 30px;
    padding: 12px 25px;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    text-decoration: none;
}

.feature-button:hover {
    background: var(--transparent-light);
    border-color: var(--light-blue-lightest);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(58, 134, 255, 0.3);
}

.feature-button i {
    color: var(--light-blue);
    margin-right: 10px;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.feature-button:hover i {
    transform: scale(1.2);
}

/* Cards and Sections */
.card, 
.about-vision-block, 
.about-approach-block, 
.about-impact-block {
    background: var(--dark-blue-lighter);
    border: 1px solid var(--transparent-light);
}

.card:hover, 
.about-vision-block:hover, 
.about-approach-block:hover, 
.about-impact-block:hover {
    background: var(--dark-blue-lightest);
    border: 1px solid var(--light-blue);
}

/* Section headers */
.section-header h2 {
    color: var(--text-primary);
}

.separator {
    background: var(--light-blue);
}

/* Animations */
.glowing-circle {
    background: var(--light-blue);
}

.node {
    background: var(--light-blue);
    box-shadow: 0 0 10px var(--light-blue);
}

.connection {
    background: linear-gradient(90deg, var(--light-blue), transparent);
}

/* Impact blocks */
.impact-circle {
    background: linear-gradient(135deg, var(--light-blue), var(--light-blue-darker));
    box-shadow: 0 10px 30px rgba(58, 134, 255, 0.3);
}

.impact-ripple {
    border: 2px solid var(--light-blue);
}

/* Orbit animation */
.orbit-circle {
    background: linear-gradient(135deg, var(--light-blue), var(--light-blue-darker));
    box-shadow: 0 0 30px var(--light-blue);
}

.orbit-ring {
    border: 1px solid var(--light-blue);
}

.orbit-dot {
    background: var(--light-blue);
    box-shadow: 0 0 10px var(--light-blue);
}

/* About section icons */
.vision-icon, 
.approach-icon, 
.impact-icon {
    color: var(--light-blue);
}

.about-vision-block:hover .vision-icon,
.about-approach-block:hover .approach-icon,
.about-impact-block:hover .impact-icon {
    color: var(--light-blue-lightest);
    transform: scale(1.2) rotate(10deg);
}

.about-subtitle::after {
    background: var(--light-blue);
}

/* Neural background */
.neural-background {
    opacity: 0.4;
}

.connection-line {
    background: linear-gradient(90deg, var(--light-blue), transparent);
}

.node-particle {
    background-color: var(--light-blue);
    box-shadow: 0 0 10px var(--light-blue);
}

.node-particle::after {
    background: linear-gradient(90deg, var(--light-blue), transparent);
}

/* Footer */
footer {
    background-color: var(--dark-blue-lighter);
}

.footer-logo {
    color: var(--light-blue);
}

/* Contact form */
.contact-form-container {
    background: var(--dark-blue-lighter);
    border: 1px solid var(--transparent-light);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--light-blue);
    background: var(--transparent-light);
}

.info-item i {
    color: var(--light-blue);
}

.social-links a:hover {
    background: var(--light-blue);
}