/* Base Styles */
:root {
    --primary-color: #4a6fa5;
    --secondary-color: #166088;
    --accent-color: #4fc3f7;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --text-color: #333;
    --text-light: #f8f9fa;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #f5f7fa;
    color: var(--text-color);
    line-height: 1.6;
}

/* Header Styles */
header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--text-light);
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--box-shadow);
    position: relative;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* Main Content */
main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

/* Activation Messages */
.activation-message {
    background-color: var(--light-color);
    border-left: 4px solid var(--accent-color);
    padding: 1rem;
    margin-bottom: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.activation-message p {
    margin-bottom: 0.5rem;
}

/* Action Buttons */
.actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.action-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
    flex: 1 1 auto;
    min-width: 150px;
}

.action-button:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

/* Filter Section */
.filter-section {
    background-color: white;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 1.5rem;
    display: inline-block;
    float: right;
}

.filter-section label {
    font-weight: 600;
    margin-right: 0.5rem;
}

.filter-section select {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    background-color: var(--light-color);
    cursor: pointer;
    transition: var(--transition);
}

.filter-section select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(79, 195, 247, 0.25);
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background-color: white;
    box-shadow: var(--box-shadow);
    border-radius: var(--border-radius);
    overflow: hidden;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
}

tr:hover {
    background-color: rgba(79, 195, 247, 0.1);
}

/* Button Styles */
.book-btn {
    background-color: var(--success-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.book-btn:hover {
    background-color: #218838;
    transform: translateY(-1px);
}

.booked-btn {
    background-color: var(--warning-color);
    color: var(--dark-color);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: not-allowed;
    font-weight: 600;
}

.not-allowed {
    cursor: not-allowed;
    opacity: 0.7;
}

/* Toast Notification */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--warning-color);
    color: var(--dark-color);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transform: translateX(150%);
    transition: transform 0.3s ease;
}

.toast.show {
    transform: translateX(0);
}

.toast-close {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: inherit;
}

/* Responsive Styles */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.5rem;
    }
    
    table {
        display: block;
        overflow-x: auto;
    }
    
    th, td {
        padding: 0.75rem;
        font-size: 0.9rem;
    }
    
    .filter-section {
        float: none;
        width: 100%;
        margin-bottom: 1rem;
    }
    
    .action-button {
        padding: 0.5rem 1rem;
    }
}

@media (max-width: 480px) {
    header {
        padding: 1rem;
    }
    
    .actions {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    th, td {
        padding: 0.5rem;
        font-size: 0.8rem;
    }
    
    .book-btn, .booked-btn {
        padding: 0.3rem 0.6rem;
        font-size: 0.8rem;
    }
}

/* Clear floats */
.clearfix::after {
    content: "";
    display: table;
    clear: both;
}

/* Login Prompt */
.login-prompt {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.login-prompt.show {
    opacity: 1;
    visibility: visible;
}

.login-prompt-content {
    background-color: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    max-width: 400px;
    width: 90%;
    text-align: center;
}

.login-prompt h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.login-prompt-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.login-prompt-btn {
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.login-prompt-btn.login {
    background-color: var(--success-color);
    color: white;
}

.login-prompt-btn.cancel {
    background-color: var(--light-color);
    color: var(--dark-color);
}

.login-prompt-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}