* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: #f9fbfd;
    color: #333;
}

/* Header & Top Bar */
.top-bar {
    background: #004d4d; /* Deep Teal */
    color: white;
    padding: 10px 10%;
    display: flex;
    justify-content: space-between;
    font-size: 13px;
}

header {
    background: #fff;
    padding: 20px 10%;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 22px;
    font-weight: 800;
    color: #004d4d;
}

.logo span {
    color: #00a8a8;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 25px;
}

nav ul li a {
    text-decoration: none;
    color: #444;
    font-weight: 600;
    transition: 0.3s;
}

nav ul li a:hover {
    color: #00a8a8;
}

/* Hero Section */
.hero {
    height: 500px;
    background: linear-gradient(rgba(0, 77, 77, 0.8), rgba(0, 77, 77, 0.6)), 
                url('https://images.unsplash.com/photo-1579165466511-703483011993?q=80&w=1500&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 15px;
}

.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background: #00a8a8;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    margin: 10px;
    font-weight: bold;
}

.btn-secondary {
    display: inline-block;
    padding: 12px 30px;
    border: 2px solid white;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    margin: 10px;
}

/* Main Layout */
.container {
    display: flex;
    width: 85%;
    margin: 40px auto;
    gap: 40px;
}

.welcome-text {
    flex: 3;
}

.welcome-text h2 {
    color: #004d4d;
    margin-bottom: 10px;
}

.notice-board {
    flex: 1;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 20px;
    height: fit-content;
}

.notice-board h3 {
    background: #004d4d;
    color: white;
    padding: 10px;
    margin: -20px -20px 20px -20px;
    border-radius: 8px 8px 0 0;
    text-align: center;
}

.features {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.feat-card {
    background: #e0f2f2;
    padding: 15px;
    flex: 1;
    text-align: center;
    border-radius: 5px;
    font-weight: bold;
    color: #004d4d;
}

footer {
    background: #222;
    color: #bbb;
    text-align: center;
    padding: 30px;
    margin-top: 50px;
}