:root {
    --navy-blue: #0A2342;
    --dark-orange: #FF8C00;
    --white: #FFFFFF;
    --light-gray: #f4f4f4;
    --text-color: #333;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--light-gray);
    color: var(--text-color);
    position: relative; /* For watermark positioning */
}

body::before {
    content: "FuelCo";
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-45deg);
    font-size: 12rem;
    font-weight: 900;
    color: rgba(10, 35, 66, 0.07); /* Navy blue with low opacity */
    pointer-events: none;
    z-index: 0;
    white-space: nowrap;
}

.container {
    max-width: 1200px;
    margin: 2rem auto; /* Added top/bottom margin */
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    position: relative; /* Ensure container is above watermark */
    z-index: 1;
}

header {
    background-color: var(--navy-blue);
    color: var(--white);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
}

.logo h1 {
    margin: 0;
    font-size: 1.8rem;
}

.logo a {
    color: var(--white);
    text-decoration: none;
}

nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

nav li {
    display: inline-block;
    margin-left: 1.5rem;
}

nav a {
    color: var(--white);
    text-decoration: none;
    font-weight: 700;
    transition: color 0.3s;
    padding-bottom: 5px;
}

nav a:hover, nav a.active {
    color: var(--dark-orange);
    border-bottom: 2px solid var(--dark-orange);
}

section {
    padding: 4rem 2rem;
    border-bottom: 1px solid #eee;
}

section:nth-of-type(even) {
    background-color: rgba(248, 249, 250, 0.8);
}

section:last-of-type {
    border-bottom: none;
}

#hero {
    text-align: center;
    padding: 8rem 2rem;
    background-image: url('https://images.pexels.com/photos/38280/pexels-photo-38280.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=2');
    background-size: cover;
    background-position: center;
    color: var(--white);
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    border-radius: 10px 10px 0 0; /* Rounded top corners */
}

#hero h1 {
    font-size: 3.5rem;
    color: var(--white);
}

#about .about-content {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.about-text {
    flex-grow: 1;
}

.sidebar {
    flex-basis: 300px;
    flex-shrink: 0;
    background-color: rgba(255, 255, 255, 0.7);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #ddd;
}

.sidebar h3 {
    color: var(--navy-blue);
    border-bottom: 2px solid var(--dark-orange);
    padding-bottom: 0.5rem;
    margin-top: 0;
}

.did-you-know-item {
    margin-bottom: 1.5rem;
}

.did-you-know-item p {
    margin: 0.5rem 0 0;
    font-size: 0.9rem;
}

h1, h2 {
    color: var(--navy-blue);
}

#gallery .gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.gallery-item img:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 15px rgba(0,0,0,0.2);
}

#contact ul {
    list-style: none;
    padding: 0;
}

#contact li {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

#contact a {
    color: var(--dark-orange);
    text-decoration: none;
}

.account-form .form-group {
    margin-bottom: 1.5rem;
}

.account-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--navy-blue);
}

.account-form input[type="text"],
.account-form input[type="email"],
.account-form input[type="tel"],
.account-form input[type="file"] {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

.account-form small {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: #666;
}

.btn {
    background-color: var(--dark-orange);
    color: var(--white);
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #E57C00; /* A slightly darker orange */
}

footer {
    text-align: center;
    padding: 2rem 1rem;
    background-color: var(--navy-blue);
    color: var(--white);
    border-radius: 0 0 10px 10px; /* Rounded bottom corners */
}