/* === General Page Styling === */
body { 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
    background: linear-gradient(to right, #f8f9fa, #e9ecef);
    margin: 0; 
    padding: 0; 
    color: #333;
}

.container { 
    max-width: 1200px; 
    margin: 40px auto; 
    padding: 25px; 
    background: #ffffff; 
    border-radius: 12px; 
    box-shadow: 0 8px 24px rgba(0,0,0,0.1); 
}

h2 { 
    text-align: center; 
    color: #2e7d32; 
    margin-bottom: 20px; 
    font-size: 28px;
}

/* === Login Form === */
#loginForm, #attendanceSection { 
    max-width: 500px; 
    margin: 0 auto; 
}

#loginForm input { 
    width: 100%; 
    padding: 12px; 
    margin: 10px 0; 
    border-radius: 8px; 
    border: 1px solid #ccc; 
    font-size: 16px; 
    transition: border 0.3s;
}

#loginForm input:focus {
    outline: none;
    border: 1px solid #2e7d32;
    box-shadow: 0 0 6px rgba(46,125,50,0.3);
}

#loginForm button { 
    width: 100%; 
    padding: 12px; 
    border: none; 
    border-radius: 8px; 
    background: #2e7d32; 
    color: #fff; 
    font-weight: bold; 
    font-size: 16px;
    cursor: pointer; 
    transition: background 0.3s, transform 0.2s;
}

#loginForm button:hover { 
    background: #1b5e20; 
    transform: translateY(-2px);
}

/* === Search Bar === */
#search { 
    width: 100%; 
    padding: 10px 14px; 
    margin: 15px 0; 
    border-radius: 8px; 
    border: 1px solid #ccc; 
    font-size: 16px; 
    transition: border 0.3s;
}

#search:focus {
    outline: none;
    border: 1px solid #2e7d32;
    box-shadow: 0 0 6px rgba(46,125,50,0.3);
}

/* === Table Styling === */
table { 
    width: 100%; 
    border-collapse: collapse; 
    margin-top: 10px; 
    font-size: 15px;
}

th, td { 
    border: 1px solid #ddd; 
    padding: 12px; 
    text-align: center; 
}

th { 
    background: #2e7d32; 
    color: white; 
    font-size: 16px;
}

tr:nth-child(even) { background: #f9f9f9; }

/* === Buttons === */
button { 
    cursor: pointer; 
    border: none; 
    border-radius: 6px; 
    padding: 8px 14px; 
    margin: 2px; 
    font-weight: bold; 
    font-size: 14px;
    transition: transform 0.15s, background 0.3s;
}

button:hover { transform: scale(1.05); }

.present-btn { background: #388e3c; color: #fff; }
.present-btn:hover { background: #2e7d32; }

.absent-btn { background: #d32f2f; color: #fff; }
.absent-btn:hover { background: #b71c1c; }

.view-btn { background: #1976d2; color: #fff; }
.view-btn:hover { background: #0d47a1; }

.logout-btn { background:#d32f2f; color:#fff; padding:8px 14px; }
.logout-btn:hover {background:#b71c1c;}

/* === Status Styling === */
.status.present { 
    background: linear-gradient(135deg, #81c784, #388e3c); 
    color: #fff; 
    font-weight: bold; 
    border-radius: 6px; 
    padding: 4px 8px;
}

.status.absent { 
    background: linear-gradient(135deg, #e57373, #d32f2f); 
    color: #fff; 
    font-weight: bold; 
    border-radius: 6px; 
    padding: 4px 8px;
}

.status.holiday { 
    background: linear-gradient(135deg, #ffb74d, #f57c00); 
    color: #fff; 
    font-weight: bold; 
    border-radius: 6px; 
    padding: 4px 8px;
}

/* === Calendar Styling === */
.calendar { 
    display: grid; 
    grid-template-columns: repeat(7, 1fr); 
    gap: 5px; 
    margin-top: 15px; 
}

.day { 
    border-radius: 6px; 
    min-height: 70px; 
    font-size: 14px; 
    font-weight: bold; 
    color: #fff; 
    position: relative; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    flex-direction: column; 
    transition: transform 0.2s, box-shadow 0.2s; 
}

.day.present { background: linear-gradient(135deg, #81c784, #388e3c); }
.day.absent { background: linear-gradient(135deg, #e57373, #d32f2f); }
.day.holiday { background: linear-gradient(135deg, #ffb74d, #f57c00); }
.day.empty { background: #f1f1f1; color: #000; font-weight: normal; }
.day.today { border: 2px solid #ff9800; }

.day:hover { 
    transform: translateY(-3px); 
    box-shadow: 0 4px 12px rgba(0,0,0,0.2); 
    cursor: pointer; 
}

.day:hover::after { 
    content: attr(data-date); 
    position: absolute; 
    top: -25px; 
    left: 50%; 
    transform: translateX(-50%); 
    background: rgba(0,0,0,0.75); 
    color: #fff; 
    font-size: 12px; 
    padding: 2px 6px; 
    border-radius: 4px; 
    white-space: nowrap; 
}

/* === Calendar Navigation === */
.month-nav { 
    margin: 12px 0; 
    display: flex; 
    justify-content: space-between; 
}

.month-nav button {
    background: #2e7d32;
    color: #fff;
    border-radius: 6px;
    padding: 6px 12px;
}
.month-nav button:hover {
    background: #1b5e20;
}

/* === Student Detail Section === */
#studentDetail { 
    text-align: left; 
    margin-top: 30px; 
    opacity: 0; 
    transition: opacity 0.5s; 
}

#studentDetail.active { opacity: 1; }

/* === Responsive Design === */
@media (max-width: 768px) {
    table, thead, tbody, th, td, tr {
        display: block;
    }
    th { display: none; }
    td {
        text-align: right;
        padding-left: 50%;
        position: relative;
    }
    td::before {
        position: absolute;
        top: 12px;
        left: 12px;
        white-space: nowrap;
        font-weight: bold;
        color: #555;
    }
    td:nth-of-type(1)::before { content: "Student"; }
    td:nth-of-type(2)::before { content: "Status"; }
    td:nth-of-type(3)::before { content: "Action"; }
    td:nth-of-type(4)::before { content: "View"; }
    td:nth-of-type(5)::before { content: "Total Present"; }
    td:nth-of-type(6)::before { content: "Total Absent"; }
}