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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-size: var(--font-size-md);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-2xl); }
h2 { font-size: var(--font-size-xl); }
h3 { font-size: var(--font-size-lg); }
h4 { font-size: var(--font-size-md); }
h5, h6 { font-size: var(--font-size-sm); }

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* App Container */
.app-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    grid-template-rows: auto 1fr;
    min-height: 100vh;
    gap: var(--spacing-md);
}

/* Header */
.app-header {
    grid-column: 1 / -1;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md);
    box-shadow: var(--card-shadow);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
}

.app-logo {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
    white-space: nowrap;
}

.header-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.api-key-section {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.api-key-input {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    min-width: 200px;
}

.header-right {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* Sidebar */
.sidebar {
    grid-row: 2;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: var(--spacing-md);
    overflow-y: auto;
    max-height: calc(100vh - 80px);
    position: sticky;
    top: 80px;
}

.nav-menu {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.nav-link {
    display: block;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-link.active {
    background-color: var(--primary-color);
    color: white;
    border-left-color: var(--accent-color);
}

/* Main Content */
.main-content {
    grid-row: 2;
    grid-column: 2;
    padding: var(--spacing-lg);
    overflow-y: auto;
    max-height: calc(100vh - 80px);
}

.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn var(--transition-fast);
}

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

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    gap: var(--spacing-lg);
}

.page-controls {
    display: flex;
    gap: var(--spacing-sm);
}

/* Cards */
.card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--card-shadow);
    margin-bottom: var(--spacing-lg);
}

.card h3 {
    margin-bottom: var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--gradient-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(25, 118, 210, 0.3);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--text-primary);
}

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

.btn-danger:hover:not(:disabled) {
    background: var(--gradient-danger);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
}

.btn-icon {
    padding: var(--spacing-sm);
    min-width: 40px;
    height: 40px;
}

.btn-full-width {
    width: 100%;
}

.btn.full-width {
    width: 100%;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

label {
    display: block;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

input,
textarea,
select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-family: inherit;
    transition: border-color var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
    border-color: var(--primary-color);
    outline: none;
}

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

.checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    margin-bottom: var(--spacing-sm);
}

.checkbox input[type="checkbox"] {
    width: auto;
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.data-table thead {
    background-color: var(--bg-secondary);
    border-bottom: 2px solid var(--border-color);
}

.data-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.data-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.data-table tbody tr:hover {
    background-color: var(--bg-secondary);
}

.data-table .empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: var(--spacing-lg);
}

/* Status Indicators */
.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: var(--spacing-sm);
    animation: pulse 2s infinite;
}

.status-connected {
    background-color: var(--color-success);
}

.status-disconnected {
    background-color: var(--color-danger);
    animation: none;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    animation: fadeIn var(--transition-normal);
}

.modal-content {
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.modal-body {
    padding: var(--spacing-lg);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.close-btn {
    background: none;
    border: none;
    font-size: var(--font-size-lg);
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* Notifications */
.notification-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: calc(var(--z-modal) + 1);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.notification {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    color: white;
    min-width: 300px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: slideIn var(--transition-normal);
}

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

.notification.error {
    background-color: var(--color-danger);
}

.notification.warning {
    background-color: var(--color-warning);
}

.notification.info {
    background-color: var(--color-info);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Loading States */
.loading {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-secondary);
}

.loading::after {
    content: "";
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

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

/* Utility Classes */
.info-text {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.text-success {
    color: var(--color-success);
}

.text-danger {
    color: var(--color-danger);
}

.text-warning {
    color: var(--color-warning);
}

.text-muted {
    color: var(--text-secondary);
}

.highlight {
    background-color: var(--primary-color);
    color: white;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-container {
        grid-template-columns: 1fr;
    }

    .sidebar {
        grid-column: 1 / -1;
        grid-row: 1;
        display: flex;
        overflow-x: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: var(--spacing-md) 0;
        max-height: none;
    }

    .nav-menu {
        flex-direction: row;
        overflow-x: auto;
        padding: 0 var(--spacing-md);
    }

    .nav-link {
        white-space: nowrap;
    }

    .main-content {
        grid-row: 2;
        grid-column: 1;
        padding: var(--spacing-md);
        max-height: none;
    }

    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .api-key-section {
        flex-direction: column;
        width: 100%;
    }

    .api-key-input {
        min-width: 100%;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .page-controls {
        width: 100%;
    }

    .modal-content {
        width: 95%;
    }

    .notification-container {
        top: auto;
        bottom: var(--spacing-lg);
        right: var(--spacing-sm);
        left: var(--spacing-sm);
    }

    .notification {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }

    .page-header {
        margin-bottom: var(--spacing-lg);
    }

    .data-table {
        font-size: var(--font-size-xs);
    }

    .data-table th,
    .data-table td {
        padding: var(--spacing-sm);
    }

    .btn {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .card {
        padding: var(--spacing-md);
    }
}