/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4a90e2;
    --primary-hover: #357abd;
    --secondary-color: #6c757d;
    --secondary-hover: #5a6268;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --background: #f5f7fa;
    --surface: #ffffff;
    --border: #e1e4e8;
    --text-primary: #24292e;
    --text-secondary: #586069;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--primary-color), #357abd);
    color: white;
    padding: 1.5rem 2rem;
    box-shadow: var(--shadow);
}

header h1 {
    font-size: 1.75rem;
    font-weight: 600;
}

/* Main Content */
main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Controls */
#controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

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

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

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

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

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
}

.icon {
    font-size: 1rem;
}

/* Tables */
table {
    width: 100%;
    background: var(--surface);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    border-collapse: collapse;
}

thead {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
}

th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

tr:last-child td {
    border-bottom: none;
}

tbody tr {
    transition: background-color 0.15s ease;
}

tbody tr:hover {
    background-color: #f8f9fa;
}

.action-buttons {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.copy-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.copy-text {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Loading Spinner */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 2rem;
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Modal */
.modal {
    display: none; /* Hidden by default */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

.modal.show {
    display: flex; /* Show when 'show' class is added */
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--surface);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 90%;
    animation: slideIn 0.3s ease;
    position: relative;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: var(--text-primary);
}

#modal-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

#modal-message {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

#modal-input-container {
    margin-bottom: 1.5rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.input-field {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

#modal-input {
    margin-bottom: 0;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

/* Toast Notifications */
#toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.toast {
    background: var(--surface);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: slideInRight 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

.toast.success {
    border-left-color: var(--success-color);
}

.toast.error {
    border-left-color: var(--danger-color);
}

.toast.warning {
    border-left-color: var(--warning-color);
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast-icon {
    font-size: 1.5rem;
}

.toast-message {
    flex: 1;
    color: var(--text-primary);
}

.toast-close {
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1.25rem;
    line-height: 1;
}

.toast-close:hover {
    color: var(--text-primary);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.empty-state-message {
    font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    main {
        padding: 1rem;
    }

    table {
        font-size: 0.9rem;
    }

    th, td {
        padding: 0.75rem 0.5rem;
    }

    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    #toast-container {
        right: 1rem;
        left: 1rem;
        bottom: 1rem;
    }

    .toast {
        min-width: auto;
    }

    .action-buttons {
        flex-direction: column;
    }
}

/* Code/UUID Display */
.code-text {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    background: #f6f8fa;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    color: #0366d6;
}

/* Link Styles */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

/* Form Styles */
.form-container {
    background: var(--surface);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: var(--shadow);
    max-width: 900px;
    margin: 0 auto;
}

.form-container h2 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-size: 1.5rem;
}

.form-section {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-help {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.input-field {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

.textarea-field {
    min-height: 100px;
    resize: vertical;
    font-family: 'Courier New', monospace;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.radio-group {
    display: flex;
    gap: 1rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding: 0.5rem 1rem;
    border: 2px solid var(--border);
    border-radius: 6px;
    transition: all 0.2s ease;
}

.radio-label:hover {
    border-color: var(--primary-color);
    background-color: rgba(74, 144, 226, 0.05);
}

.radio-label input[type="radio"] {
    cursor: pointer;
}

.radio-label input[type="radio"]:checked + span {
    font-weight: 600;
    color: var(--primary-color);
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

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

.btn-success:hover {
    background-color: #218838;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #c82333;
}

/* URL Set Form Specific Styles */
.url-group,
.param-group {
    background: #f8f9fa;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.url-header,
.param-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.url-header strong,
.param-header strong {
    font-size: 1.1rem;
    color: var(--text-primary);
}

.url-param-group {
    background: white;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
}

.url-param-group .form-row {
    align-items: center;
    margin-bottom: 0;
}

.url-param-group button {
    align-self: flex-end;
    margin-bottom: 0;
}