:root {
    --primary-color: #1a73e8; /* Google Blue */
    --secondary-color: #1557b0;
    --accent-color: #fbbc04;
    --text-color: #202124;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --font-main: 'Cairo', sans-serif;
}

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

body {
    font-family: var(--font-main);
    color: var(--text-color);
    background-color: var(--white);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header */
.site-header {
    background-color: var(--white);
    padding: 15px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #e8f0fe 0%, #ffffff 100%);
    padding: 60px 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    color: #5f6368;
    max-width: 700px;
    margin: 0 auto 30px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s;
    font-size: 1.1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--secondary-color);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background-color: #e8f0fe;
}

/* Features */
.features {
    padding: 60px 0;
    background-color: var(--white);
}

.features .container {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
}

.feature-card {
    background: var(--light-bg);
    padding: 30px;
    border-radius: 8px;
    flex: 1 1 300px;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.12);
}

.feature-card h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* CTA Section */
.cta-section {
    background-color: var(--primary-color);
    color: var(--white);
    text-align: center;
    padding: 50px 0;
}

.cta-section h2 {
    margin-bottom: 15px;
}

.cta-section p {
    margin-bottom: 25px;
    opacity: 0.9;
}

.cta-section .btn-secondary {
    background-color: var(--white);
    color: var(--primary-color);
    border: none;
}

/* Footer */
footer {
    background-color: #202124;
    color: #bdc1c6;
    text-align: center;
    padding: 20px 0;
    font-size: 0.9rem;
    margin-bottom: 60px; /* Space for sticky bar */
}

/* Sticky Bar (Mobile Only) */
.sticky-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.15);
    padding: 10px;
    z-index: 1000;
    display: none; /* Hidden on desktop by default */
}

.sticky-btn {
    display: block;
    width: 100%;
    background-color: #34a853; /* Green for calls */
    color: var(--white);
    text-align: center;
    padding: 12px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.2rem;
    animation: pulse 2s infinite;
}

/* Media Queries */
@media (max-width: 768px) {
    .sticky-bar {
        display: block;
    }

    .hero h1 {
        font-size: 2rem;
    }
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(52, 168, 83, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(52, 168, 83, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(52, 168, 83, 0);
    }
}