/* Base Styles & Variables */
:root {
    --primary-color: #1a365d;      /* Deep Blue */
    --secondary-color: #2c7a7b;    /* Teal */
    --accent-color: #3182ce;       /* Lighter Blue */
    --text-color: #2d3748;         /* Dark Gray */
    --light-text: #f7fafc;         /* Off White */
    --light-bg: #f8fafc;           /* Light Gray Background */
    --border-color: #e2e8f0;       /* Border Gray */
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease-in-out;
}

/* Reset & Base Styles */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Roboto', sans-serif; line-height: 1.6; color: var(--text-color); }

/* Layout */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.section-padding { padding: 5rem 0; }

/* Typography */
h1, h2, h3, h4, h5, h6 { font-family: 'Roboto', sans-serif; font-weight: 700; }
h1 { font-size: 2.5rem; margin-bottom: 1.5rem; }
h2 { font-size: 2rem; margin-bottom: 1.5rem; text-align: center; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    padding: 0.5rem 0;
}

.logo img { height: 50px; }

.nav-links { display: flex; gap: 2rem; }
.nav-links a { color: var(--text-color); font-weight: 500; }
.nav-links a:hover { color: var(--accent-color); }

/* Hero Section */
.hero {
    padding: 10rem 0 5rem;
    background: linear-gradient(135deg, #f7fafc 0%, #ebf8ff 100%);
    position: relative;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.hero-content { flex: 1; }
.hero-image { flex: 1; text-align: center; }
.hero-image img { max-width: 100%; height: auto; }

/* Services Section */
.services { background-color: white; }
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: white;
    border-radius: 0.5rem;
    padding: 2rem;
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-color);
}

.service-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    background: rgba(49, 130, 206, 0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.75rem;
    color: var(--accent-color);
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-logo img { height: 50px; margin-bottom: 1rem; }
.footer h4 { color: white; margin-bottom: 1.5rem; }
.footer a { color: rgba(255, 255, 255, 0.7); }
.footer a:hover { color: white; }

/* WhatsApp Float Button */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 40px;
    right: 40px;
    background-color: #25d366;
    color: white;
    border-radius: 50%;
    text-align: center;
    font-size: 30px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    z-index: 100;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
}

.whatsapp-float:hover {
    background-color: #128c7e;
    transform: translateY(-5px);
}

/* Responsive Styles */
@media (max-width: 768px) {
    .hero .container { flex-direction: column; text-align: center; }
    .hero-content { margin-bottom: 2rem; }
    .nav-links { display: none; }
    .hamburger { display: flex; flex-direction: column; gap: 5px; cursor: pointer; }
    .hamburger span { width: 25px; height: 3px; background-color: var(--primary-color); }
}