/* ============================================
   GhostKey Website Styles
   Primary Color: #00D9FF (Electric Cyan)
   Secondary Color: #0099CC (Deep Blue)
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #2C3E50;
    background: #ffffff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3 {
    font-weight: 600;
    line-height: 1.2;
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    padding: 80px 20px;
    text-align: center;
}

.logo {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.hero h1 {
    font-size: 3.5rem;
    color: #ffffff;
    margin-bottom: 10px;
    letter-spacing: -1px;
}

.tagline {
    font-size: 1.5rem;
    color: #00D9FF;
    font-weight: 500;
    margin-bottom: 20px;
}

.subtitle {
    font-size: 1.1rem;
    color: #b0b0b0;
    max-width: 700px;
    margin: 0 auto 30px;
    line-height: 1.7;
}

.badge {
    display: inline-block;
    background: transparent;
    color: #00D9FF;
    border: 2px solid #00D9FF;
    padding: 8px 24px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    margin-bottom: 30px;
}

.cta-button {
    display: inline-block;
    background: #00D9FF;
    color: #0a0a0a;
    padding: 16px 40px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 217, 255, 0.4);
}

.cta-button:hover {
    background: #00B8E6;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 217, 255, 0.6);
}

/* ============================================
   Problem Section
   ============================================ */

.problem {
    background: #f8f9fa;
    padding: 80px 20px;
}

.problem h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 20px;
    color: #2C3E50;
}

.intro {
    text-align: center;
    font-size: 1.2rem;
    color: #5A6C7D;
    max-width: 800px;
    margin: 0 auto 50px;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.problem-item {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 3px solid #e0e0e0;
}

.problem-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 217, 255, 0.15);
    border-top-color: #00D9FF;
}

.problem-item .icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.problem-item h3 {
    color: #2C3E50;
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.problem-item p {
    color: #5A6C7D;
    line-height: 1.6;
}

/* ============================================
   Solution Section
   ============================================ */

.solution {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a2530 100%);
    padding: 80px 20px;
    color: white;
}

.solution h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 20px;
}

.intro-white {
    text-align: center;
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 50px;
    opacity: 0.95;
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.solution-item {
    text-align: center;
    padding: 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.solution-item:hover {
    background: rgba(0, 217, 255, 0.05);
    transform: translateY(-5px);
}

.icon-white {
    font-size: 3rem;
    margin-bottom: 20px;
    opacity: 0.9;
    filter: drop-shadow(0 0 10px rgba(0, 217, 255, 0.3));
}

.solution-item h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    font-weight: 600;
    color: #00D9FF;
}

.solution-item p {
    line-height: 1.7;
    opacity: 0.9;
}

.tagline-white {
    text-align: center;
    font-size: 1.3rem;
    font-style: italic;
    margin-top: 60px;
    font-weight: 300;
    letter-spacing: 0.5px;
    color: #00D9FF;
}

/* ============================================
   Advantage Section (if you add it)
   ============================================ */

.advantage {
    background: white;
    padding: 80px 20px;
}

.advantage h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 50px;
    color: #2C3E50;
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.advantage-item {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid #00D9FF;
    transition: all 0.3s ease;
}

.advantage-item:hover {
    background: white;
    box-shadow: 0 8px 20px rgba(0, 217, 255, 0.15);
    transform: translateX(5px);
}

.advantage-item h3 {
    color: #2C3E50;
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.advantage-item p {
    color: #5A6C7D;
    line-height: 1.6;
}

/* ============================================
   Use Cases Section
   ============================================ */

.use-cases {
    background: #f8f9fa;
    padding: 80px 20px;
}

.use-cases h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 50px;
    color: #2C3E50;
}

.use-case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.use-case-item {
    background: white;
    padding: 30px;
    border-radius: 8px;
    border-left: 4px solid #00D9FF;
    transition: all 0.3s ease;
}

.use-case-item:hover {
    background: white;
    box-shadow: 0 8px 20px rgba(0, 217, 255, 0.15);
    transform: translateX(5px);
}

.use-case-item h3 {
    color: #2C3E50;
    font-size: 1.2rem;
    margin-bottom: 12px;
}

.use-case-item p {
    color: #5A6C7D;
    line-height: 1.6;
}

/* ============================================
   Patent Section
   ============================================ */

.patent {
    background: white;
    padding: 80px 20px;
}

.patent-box {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    max-width: 800px;
    margin: 0 auto;
    padding: 50px;
    border-radius: 12px;
    border: 3px solid #00D9FF;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 217, 255, 0.3);
}

.patent-seal {
    font-size: 4rem;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 15px rgba(0, 217, 255, 0.5));
}

.patent-box h2 {
    font-size: 2.2rem;
    color: #ffffff;
    margin-bottom: 20px;
}

.patent-badge {
    display: inline-block;
    background: #00D9FF;
    color: #0a0a0a;
    padding: 12px 30px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 1px;
    margin-bottom: 15px;
}

.patent-filed {
    color: #b0b0b0;
    font-size: 1rem;
    margin-bottom: 30px;
}

.patent-box h3 {
    color: #00D9FF;
    font-size: 1.4rem;
    margin: 30px 0 20px;
}

.claims-list {
    list-style: none;
    text-align: left;
    max-width: 600px;
    margin: 0 auto 30px;
}

.claims-list li {
    padding: 10px 0 10px 30px;
    position: relative;
    color: #b0b0b0;
    line-height: 1.6;
}

.claims-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #00D9FF;
    font-weight: bold;
    font-size: 1.2rem;
}

.patent-notice {
    color: #b0b0b0;
    font-size: 0.95rem;
    line-height: 1.6;
    font-style: italic;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #2a2a2a;
}

/* ============================================
   Contact Section
   ============================================ */

.contact {
    background: #2C3E50;
    padding: 80px 20px;
    color: white;
}

.contact h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 20px;
}

.contact-intro {
    text-align: center;
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 50px;
    opacity: 0.9;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.contact-item {
    background: rgba(255, 255, 255, 0.08);
    padding: 25px;
    border-radius: 8px;
    border-left: 3px solid #00D9FF;
    transition: all 0.3s ease;
}

.contact-item:hover {
    background: rgba(0, 217, 255, 0.1);
    transform: translateY(-3px);
}

.contact-item h3 {
    color: #00D9FF;
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.contact-item p {
    opacity: 0.8;
    font-size: 0.95rem;
}

.contact-cta {
    text-align: center;
    background: rgba(0, 217, 255, 0.05);
    padding: 20px;
    border-radius: 12px;
    border: 2px solid rgba(0, 217, 255, 0.2);
}

.contact-cta h3 {
    font-size: 1.6rem;
    margin-bottom: 20px;
}

.email-button {
    display: inline-block;
    background: #00D9FF;
    color: #0a0a0a;
    padding: 16px 40px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 217, 255, 0.4);
}

.email-button:hover {
    background: #00B8E6;
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 217, 255, 0.6);
}

/* ============================================
   Footer
   ============================================ */

footer {
    background: #1a252f;
    padding: 30px 20px;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

footer p {
    font-size: 0.9rem;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .tagline {
        font-size: 1.2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    section h2 {
        font-size: 2rem;
    }
    
    .problem-grid,
    .solution-grid,
    .use-case-grid,
    .contact-grid,
    .advantage-grid {
        grid-template-columns: 1fr;
    }
    
    .patent-box {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero {
        padding: 60px 20px;
    }
    
    section {
        padding: 60px 20px;
    }
}
.email-display {
    display: inline-block;
    background: #00D9FF;
    color: #0a0a0a;
    padding: 16px 40px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    user-select: text;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 217, 255, 0.4);
}

.email-display:hover {
    background: #00B8E6;
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 217, 255, 0.6);
}

.email-display:active {
    transform: scale(0.98);
}

.email-instruction {
    margin-top: 12px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    font-style: italic;
}

.copy-message {
    display: block;
    margin-top: 15px;
    color: #00D9FF;
    font-weight: 600;
    font-size: 1rem;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    pointer-events: none;
}

.copy-message.show {
    opacity: 1;
    transform: translateY(0);
}