/* page */
body{
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #0f172a, #111827);
    margin: 0;
    padding: 0;
    color: white;
}

/* navbar */
.navbar{
    background: rgba(15, 23, 42, 0.95);
    color: white;
    padding: 25px;
    text-align: center;
    font-size: 28px;
    font-weight: bold;
    letter-spacing: 1px;
    border-bottom: 2px solid #2563eb;
    box-shadow: 0px 4px 12px rgba(0,0,0,0.4);
}

/* container */
.container{
    width: 1200px;
    max-width: 95%;
    margin: 40px auto;
    background: rgba(31, 41, 55, 0.92);
    padding: 40px;
    border-radius: 18px;
    box-shadow: 0px 8px 25px rgba(0,0,0,0.45);
    backdrop-filter: blur(8px);
}

/* headings */
h1,
h2{
    text-align: center;
    color: #f8fafc;
    margin-bottom: 25px;
}

/* form fields */
input,
select,
textarea{
    width: 100%;
    padding: 14px;
    margin-top: 10px;
    margin-bottom: 20px;
    border: 1px solid #374151;
    border-radius: 10px;
    box-sizing: border-box;
    font-size: 15px;
    background-color: #111827;
    color: white;
}

/* placeholders */
input::placeholder,
textarea::placeholder{
    color: #9ca3af;
}

/* buttons */
button{
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 15px;
    font-weight: bold;
    transition: 0.3s;
}

/* button hover */
button:hover{
    background: linear-gradient(135deg, #1d4ed8, #1e40af);
    transform: translateY(-2px);
}

/* success message */
.success{
    color: #4ade80;
    text-align: center;
    font-weight: bold;
}

/* error message */
.error{
    color: #f87171;
    text-align: center;
    font-weight: bold;
}

/* table */
table{
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    overflow: hidden;
    border-radius: 10px;
}

/* table cells */
th,
td{
    border: 1px solid #374151;
    padding: 14px;
    text-align: center;
    color: white;
}

/* table headings */
th{
    background-color: #2563eb;
    color: white;
}

/* table rows */
tr{
    background-color: rgba(17, 24, 39, 0.9);
}

/* images */
img{
    width: 120px;
    height: auto;
    border-radius: 10px;
}

/* links */
a{
    text-decoration: none;
    color: #60a5fa;
}

/* links hover */
a:hover{
    color: #93c5fd;
}