/* --- Global Variables & Reset --- */
:root { 
    --primary: #00b4d8;       /* Brand Color */
    --primary-dark: #0096b4;  /* Hover State */
    --dark: #2c3e50;          /* Text Color */
    --light: #f4f9fc;         /* Background Tint */
    --white: #ffffff;         /* Card/Header BG */
    --shadow: 0 4px 15px rgba(0,180,216,0.15);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { 
    font-family: 'Segoe UI', system-ui, sans-serif; 
    color: var(--dark); 
    line-height: 1.6; 
    background: var(--light); 
}
a { text-decoration: none; color: inherit; transition: 0.3s; }

/* --- Layout Components --- */
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
header { background: var(--white); box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
nav { display: flex; justify-content: space-between; align-items: center; padding: 1rem 0; }
.logo { font-size: 1.6rem; font-weight: 800; color: var(--primary); letter-spacing: -0.5px; }
.nav-links a { margin-left: 2rem; font-weight: 600; color: #555; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }

/* --- Hero Section --- */
.hero { background: linear-gradient(135deg, #e0f7fa 0%, #ffffff 100%); padding: 6rem 0; text-align: center; }
.hero h1 { font-size: 3.2rem; margin-bottom: 1rem; color: var(--dark); line-height: 1.2; }
.hero p { font-size: 1.25rem; color: #666; max-width: 650px; margin: 0 auto 2.5rem; }
.btn { 
    display: inline-block; padding: 0.9rem 2.2rem; background: var(--primary); 
    color: white; border-radius: 50px; font-weight: bold; box-shadow: var(--shadow); 
}
.btn:hover { transform: translateY(-3px); background: var(--primary-dark); }

/* --- Features Grid (Reusable Component) --- */
.features { padding: 5rem 0; background: var(--white); margin-top: 2rem; }
.features h2 { text-align: center; font-size: 2.2rem; margin-bottom: 3rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.card { background: var(--light); padding: 2.5rem 2rem; border-radius: 12px; text-align: center; border: 1px solid #eef4f7; transition: transform 0.3s, box-shadow 0.3s; }
.card:hover { transform: translateY(-6px); box-shadow: 0 10px 25px rgba(0,0,0,0.08); border-color: var(--primary); }
.icon { font-size: 2.8rem; display: block; margin-bottom: 1rem; }
.card h3 { margin-bottom: 0.8rem; font-size: 1.4rem; }

/* --- Contact Page Specific Styles --- */
.page-header { background: linear-gradient(135deg, #e0f7fa 0%, #ffffff 100%); padding: 4rem 0; text-align: center; margin-bottom: 2rem; }
.contact-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; padding-bottom: 4rem; }
.info-box { background: var(--white); padding: 2.5rem; border-radius: 12px; box-shadow: 0 5px 20px rgba(0,0,0,0.05); height: fit-content; }
.info-item { display: flex; align-items: flex-start; margin-bottom: 2rem; }
.info-icon { font-size: 1.8rem; margin-right: 1rem; color: var(--primary); }

form input, form textarea { 
    width: 100%; padding: 1rem; margin-bottom: 1rem; border: 1px solid #ddd; 
    border-radius: 8px; font-family: inherit; font-size: 1rem; background: var(--white); transition: 0.3s; 
}
form input:focus, form textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,180,216,0.15); }
.btn-full { display: block; width: 100%; padding: 1rem; background: var(--primary); color: white; border: none; border-radius: 8px; font-weight: bold; cursor: pointer; font-size: 1.1rem; transition: 0.3s; }
.btn-full:hover { background: var(--primary-dark); transform: translateY(-2px); }

/* --- Footer --- */
footer { background: var(--dark); color: #ccc; text-align: center; padding: 2.5rem 0; margin-top: auto; }

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) { 
    .hero h1 { font-size: 2.4rem; } 
    .nav-links a { margin-left: 1rem; font-size: 0.95rem; } 
    .contact-wrapper { grid-template-columns: 1fr; }
}