:root {
    --primary-color: #00d2ff;
    --secondary-color: #3a7bd5;
    --accent-color: #25d366; /* WhatsApp Green */
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

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

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

/* Header */
.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.brand {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    background: var(--gradient);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    font-weight: 800;
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 210, 255, 0.3);
}

.brand h1 {
    font-size: 1.2rem;
    font-weight: 700;
}

.brand p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.mini-cta {
    background: var(--gradient);
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.mini-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 210, 255, 0.4);
}

/* Progress Box */
.progress-box {
    margin: 30px 0;
    background: var(--bg-card);
    padding: 20px;
    border-radius: 15px;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.progress {
    height: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    overflow: hidden;
}

.progress span {
    display: block;
    height: 100%;
    width: 79%;
    background: var(--gradient);
    border-radius: 5px;
    animation: progress-anim 2s ease-out;
}

@keyframes progress-anim {
    from { width: 0; }
    to { width: 79%; }
}

/* Hero Section */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    padding: 80px 0;
    align-items: center;
}

.eyebrow {
    color: var(--primary-color);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.8rem;
    display: block;
    margin-bottom: 15px;
}

.hero h2 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 25px;
    background: linear-gradient(to right, #fff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 35px;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

.glow-btn {
    background: var(--gradient);
    color: white;
    text-decoration: none;
    padding: 15px 35px;
    border-radius: 10px;
    font-weight: 700;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-block;
    text-align: center;
}

.glow-btn:hover {
    box-shadow: 0 0 25px rgba(0, 210, 255, 0.5);
    transform: scale(1.05);
}

.outline-btn {
    border: 2px solid var(--secondary-color);
    color: white;
    text-decoration: none;
    padding: 13px 33px;
    border-radius: 10px;
    font-weight: 700;
    transition: var(--transition);
}

.outline-btn:hover {
    background: rgba(58, 123, 213, 0.1);
}

/* Device Showcase */
.device-showcase {
    position: relative;
    height: 400px;
}

.tv {
    width: 100%;
    height: 250px;
    background: #333;
    border-radius: 10px;
    border: 8px solid #222;
    position: relative;
    overflow: hidden;
}

.tv-screen {
    width: 100%;
    height: 100%;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.screen-glow {
    text-align: center;
    animation: pulse 3s infinite;
}

@keyframes pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

.screen-glow strong {
    font-size: 2.5rem;
    display: block;
    color: var(--primary-color);
}

/* Benefits */
.benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 50px 0;
}

.benefits article {
    background: var(--bg-card);
    padding: 20px;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
    font-weight: 500;
}

/* Plans */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h3 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.plan-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 80px;
}

.plan {
    background: var(--bg-card);
    border: 2px solid transparent;
    padding: 40px 30px;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    color: white;
}

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

.plan.active {
    border-color: var(--primary-color);
    background: linear-gradient(rgba(30, 41, 59, 0.8), rgba(30, 41, 59, 0.8)), var(--gradient);
}

.plan span {
    display: block;
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--text-muted);
}

.plan strong {
    display: block;
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.plan small {
    color: var(--primary-color);
    font-weight: 600;
}

/* Business Card */
.business-card {
    background: linear-gradient(90deg, #128c7e, #25d366);
    padding: 40px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 80px;
}

.business-icon {
    font-size: 3rem;
}

.business-button {
    background: white;
    color: #128c7e;
    text-decoration: none;
    padding: 15px 30px;
    border-radius: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
    transition: var(--transition);
}

.business-button:hover {
    transform: scale(1.05);
}

/* Signup Form */
.signup {
    max-width: 600px;
    margin: 0 auto 100px;
}

.form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form input {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 10px;
    color: white;
    font-size: 1rem;
}

.form input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.message {
    text-align: center;
    margin-top: 15px;
    font-weight: 600;
    color: var(--primary-color);
}

/* Testimonials */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 80px;
}

.testimonial-grid article {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 15px;
}

.stars {
    color: #fbbf24;
    margin-bottom: 15px;
}

/* Footer */
footer {
    text-align: center;
    padding: 50px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

footer small {
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 40px 0;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .device-showcase {
        display: none;
    }
    
    .business-card {
        flex-direction: column;
        text-align: center;
    }
    
    .business-button {
        margin: 0 auto;
    }
    
    .hero h2 {
        font-size: 2.2rem;
    }
}