/* ============================================================
   THE PRIME-SYSTEM MASTER STYLESHEET
   Muonekano wa Himaya Isiyo na Mipaka
   ============================================================ */

/* 1. Usafishaji wa Msingi (Global Reset) */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-gold: #D4AF37; /* Dhahabu halisi */
    --dark-empire: #001F3F;  /* Bluu ya Mamlaka */
    --body-bg: #f4f7f6;      /* Rangi ya background tulivu */
    --text-color: #333333;
    --white: #ffffff;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    background-color: var(--body-bg);
    color: var(--text-color);
}

/* 2. Navigation & Header */
header {
    background-color: var(--dark-empire);
    border-bottom: 4px solid var(--primary-gold);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

nav {
    max-width: 1100px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    color: var(--primary-gold);
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 2px;
    text-transform: uppercase;
}

nav a {
    color: var(--white);
    text-decoration: none;
    margin-left: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    transition: var(--transition);
}

nav a:hover {
    color: var(--primary-gold);
}

/* 3. Typography & Buttons */
h1, h2, h3 {
    color: var(--dark-empire);
    margin-bottom: 1rem;
}

.btn-primary {
    background-color: var(--primary-gold);
    color: var(--dark-empire);
    padding: 12px 25px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    display: inline-block;
    transition: var(--transition);
    border: 2px solid var(--primary-gold);
}

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

/* 4. Grid System kwa ajili ya Simu na Computer */
.grid-container {
    display: grid;
    gap: 20px;
}

/* Responsive: Simu kwanza */
@media (max-width: 768px) {
    .grid-container {
        grid-template-columns: 1fr;
    }
    nav {
        flex-direction: column;
        gap: 15px;
    }
    nav a {
        margin: 5px 0;
    }
}

/* Laptop/Desktop */
@media (min-width: 769px) {
    .grid-container {
        grid-template-columns: 1fr 1fr;
    }
}

/* 5. Sehemu ya Funguo (Keys Card Style) */
.key-card {
    background: var(--white);
    padding: 20px;
    border-left: 6px solid var(--primary-gold);
    border-radius: 4px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.key-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

/* 6. Footer Styles */
footer hr {
    border: 0;
    border-top: 1px solid rgba(212, 175, 55, 0.2);
    margin: 20px 0;
}

/* 7. Image Handling */
.hero-image {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}