/* ==========================================================================
   1. VARIABLES & RESET
   ========================================================================== */
:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --text-muted: #666666;
    --primary: #0b127d;
    /* Modern Blue */
    --primary-hover: #1d4ed8;
    --secondary: #cecece;
    /* Light Gray */
    --secondary-hover: #e5e7eb;
    --accent: #eff6ff;
    --border-radius: 8px;
    --transition: all 0.2s ease-in-out;
}

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

html {
    scroll-behavior: smooth;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.5;
}

/* ==========================================================================
   2. REUSABLE UTILITIES
   ========================================================================== */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-nav {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

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

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

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

/* ==========================================================================
   3. HEADER & NAVIGATION
   ========================================================================== */
header {
    border-bottom: 1px solid var(--secondary);
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--primary);
}

nav ul {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-nav {
    padding: 0.5rem 1rem;
    background-color: var(--accent);
    color: var(--primary);
}

.btn-nav:hover {
    background-color: var(--primary);
    color: #ffffff;
}

/* ==========================================================================
   4. HERO SECTION
   ========================================================================== */
.hero {
    display: grid;
    grid-template-areas: "hero-content hero-image";
    gap: 4rem;
    padding: 0rem 2rem;
    padding-top: 4rem;
    align-items: center;

}

.hero-content {
    grid-area: hero-content;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 1.5rem;
}

.hero-content .highlight {
    color: var(--primary);
}

.hero-content p {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.hero-btns {
    display: flex;
    gap: 1rem;
}

.hero-image-container {
    grid-area: hero-image;
    grid-template-areas: 
    "otter VU"
    "otter BVTS"
    ;
    display: grid;
    flex-wrap:wrap;
    justify-content: center;;
    gap:0rem;
    place-items: center;
}

.hero-image {
    border-radius: var(--border-radius);
    grid-area: otter;
    height: 200px;
    padding: 0rem 0rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.VU-image{
    border-radius: var(--border-radius);
    height: 110px;
    grid-area: VU;
    padding:  1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    /* background-color: #080d57; */
}

.BVTS-image{
    border-radius: var(--border-radius);
    height: 90px;
    grid-area: BVTS;
    padding:  1rem 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    /* background-color: #080d57; */
}

/* ==========================================================================
   5. FEATURES SECTION
   ========================================================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding: 4rem 2rem;
}

.feature-card {
    display: flex;
    flex-direction: column;
    justify-self: center;
    text-decoration: none;
    color: var(--primary);
    background-color: var(--bg-color);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--secondary);
    transition: var(--transition);
}

.feature-card-plbd {
    grid-column: span 3;
    display: grid;
    grid-template-areas: "title image" "description image";
}

.feature-card:hover {
    color: var(--primary-hover);
    transform: translateY(-4px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.10);
}

.feature-card h3 {
    grid-area: title;
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.feature-card p {
    grid-area: description;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.feature-card img {
    grid-area: image;
    height: 10rem;
}

.feature-card-plbd img {
    height: 5rem;

}



/* ==========================================================================
   7. FOOTER
   ========================================================================== */
footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--secondary);
}





@media (max-width: 900px) {
    .hero {
        display: grid;
        grid-template-areas: "hero-content" "hero-image";
        gap: 0;
        padding: 0;
        padding-top: 1rem;
    }

    .hero-container {
        padding: 0;
    }

    .hero-image {
        height: 10em;
    }

    .hero-content {
        display: grid;
        place-items: center;
    }

    /* Cleaned up and removed the duplicate block */
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 1rem 2rem;
    }

    .feature-card{
        padding: 1rem;
        width: 100%;
        align-items: center;
    }

    .feature-card-plbd {
        grid-column: span 1;
        display: grid;
        grid-template-areas: "title" "image" "description";
        gap: 1rem;
        place-items: center;
    }
}