/* Global Styles */
:root {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

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

nav ul li {
    margin-right: 20px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: var(--light-color);
}

/* Button Styles */
.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    text-decoration: none;
    font-size: 1rem;
    transition: background-color 0.3s;
}

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

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

.btn-secondary:hover {
    background-color: #1a252f;
}

/* Form Styles */
.auth-form, .leave-form {
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 30px auto;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.note {
    font-size: 0.9rem;
    color: #666;
    margin-top: 10px;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 50px 0;
}

.hero h2 {
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: #555;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* Features Section */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 50px 0;
}

.feature {
    background-color: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.feature h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* Footer Styles */
footer {
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: 50px;
}

/* Dashboard Styles */
.dashboard {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 30px;
}

.sidebar {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
}

.sidebar ul {
    list-style: none;
}

.sidebar ul li {
    margin-bottom: 15px;
}

.sidebar ul li a {
    color: var(--dark-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.sidebar ul li a:hover {
    color: var(--primary-color);
}

.main-content {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 30px;
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

table th, table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

table th {
    background-color: var(--primary-color);
    color: white;
}

table tr:hover {
    background-color: #f5f5f5;
}

.status-pending {
    color: var(--warning-color);
    font-weight: 500;
}

.status-approved {
    color: var(--success-color);
    font-weight: 500;
}

.status-rejected {
    color: var(--danger-color);
    font-weight: 500;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    nav ul {
        flex-direction: column;
    }
    
    nav ul li {
        margin-bottom: 10px;
        margin-right: 0;
    }
}