:root {
    --primary-color: #25D366; /* WhatsApp Green */
    --secondary-color: #075e54;
    --dark-color: #128c7e;
    --light-bg: #f4f7f6;
    --text-color: #333;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    margin: 0;
    padding: 0;
    background-color: var(--light-bg);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background: linear-gradient(135deg, var(--secondary-color), var(--dark-color));
    color: #fff;
    padding: 3rem 1rem;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 2.8rem;
    font-weight: 700;
}

header p {
    font-size: 1.2rem;
    margin-top: 10px;
    opacity: 0.9;
}

nav {
    background: #111;
    display: flex;
    justify-content: center;
    padding: 10px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    flex-wrap: wrap;
}

nav a {
    color: #fff;
    text-decoration: none;
    padding: 10px 18px;
    margin: 2px 5px;
    border-radius: 20px;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

nav a:hover, nav a.active {
    background: var(--primary-color);
    color: #fff;
}

.container {
    max-width: 900px;
    margin: 40px auto;
    padding: 35px;
    background: #fff;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    border-radius: 12px;
    flex: 1;
    width: 90%;
}

h2 {
    color: var(--secondary-color);
    border-bottom: 2px solid #eaeeef;
    padding-bottom: 12px;
    margin-bottom: 25px;
}

/* Call to action button */
.cta-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 14px 28px;
    font-size: 1.1rem;
    font-weight: bold;
    text-decoration: none;
    border-radius: 30px;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    transition: transform 0.2s, background-color 0.2s;
    margin-top: 15px;
}

.cta-btn:hover {
    background-color: #1eb956;
    transform: translateY(-2px);
}

.feature-box {
    background: #eef9f5;
    border-left: 4px solid var(--primary-color);
    padding: 25px;
    border-radius: 8px;
    text-align: center;
    margin: 30px 0;
}

.contact-info {
    background: #f8f9fa;
    padding: 20px;
    border-left: 5px solid var(--secondary-color);
    border-radius: 8px;
    margin-top: 20px;
}

.contact-info a {
    color: var(--dark-color);
    text-decoration: none;
    font-weight: 600;
}

footer {
    text-align: center;
    padding: 20px 0;
    background: #111;
    color: #aaa;
    margin-top: auto;
    font-size: 0.9rem;
}

@media (max-width: 600px) {
    nav { flex-direction: column; align-items: center; }
    nav a { width: 80%; text-align: center; margin: 3px 0; }
}
/* Bot Photo / Logo Styling */
.bot-logo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #ffffff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    margin-bottom: 10px;
}

.bot-feature-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
    border: 3px solid #25D366;
}