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

:root {
    --primary-color: #3b82f6;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-dark: #1e293b;
    --bg-light: #f8fafc;
    --text-dark: #0f172a;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --terminal-bg: #0f172a;
    --terminal-text: #e2e8f0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
}

.container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 5px;
}

@media (min-width: 480px) {
    .container {
        padding: 8px;
    }
}

@media (min-width: 768px) {
    .container {
        padding: 15px;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 20px;
    }
}

@media (min-width: 1400px) {
    .container {
        padding: 30px 40px;
        max-width: 90%;
    }
}

/* Header */
.header {
    background: white;
    padding: 10px 12px;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

@media (min-width: 480px) {
    .header {
        padding: 12px 15px;
        margin-bottom: 12px;
    }
}

@media (min-width: 768px) {
    .header {
        padding: 15px 25px;
        margin-bottom: 20px;
    }
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-image {
    height: 32px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    display: inline-block;
}

.subtitle {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.indicator {
    font-size: 1.2rem;
    line-height: 1;
}

.indicator.online {
    color: var(--success-color);
}

.indicator.offline {
    color: var(--danger-color);
}

/* Main Content Layout */
.main-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    align-items: start;
}

@media (min-width: 480px) {
    .main-content {
        gap: 10px;
    }
}

/* Small tablets and above: side-by-side with narrow node panel */
@media (min-width: 768px) {
    .main-content {
        grid-template-columns: 280px 1fr;
        gap: 15px;
    }
}

/* Tablets and small desktops: balanced layout */
@media (min-width: 1024px) {
    .main-content {
        grid-template-columns: 350px 1fr;
        gap: 20px;
    }
}

/* Medium desktops: more comfortable layout */
@media (min-width: 1280px) {
    .main-content {
        grid-template-columns: 420px 1fr;
        gap: 25px;
    }
}

/* Large desktops: full width */
@media (min-width: 1600px) {
    .main-content {
        grid-template-columns: 480px 1fr;
        gap: 30px;
    }
}

/* Agent Panel */
.agent-panel {
    background: white;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    height: fit-content;
    max-height: calc(100vh - 140px);
    display: flex;
    flex-direction: column;
}

@media (min-width: 1200px) {
    .agent-panel {
        max-height: calc(100vh - 160px);
    }
}

.agent-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 6px;
    padding: 10px 10px 8px 10px;
    border-bottom: 2px solid var(--border-color);
    flex-shrink: 0;
    flex-wrap: wrap;
}

@media (min-width: 480px) {
    .agent-panel-header {
        padding: 12px 12px 10px 12px;
        gap: 8px;
    }
}

@media (min-width: 768px) {
    .agent-panel-header {
        padding: 15px 15px 12px 15px;
        gap: 10px;
    }
}

@media (min-width: 1024px) {
    .agent-panel-header {
        padding: 20px 20px 12px 20px;
        gap: 12px;
    }
}

@media (min-width: 1280px) {
    .agent-panel-header {
        padding: 25px 25px 15px 25px;
        gap: 15px;
    }
}

.agent-panel h2 {
    font-size: 1rem;
    margin: 0;
    color: var(--text-dark);
}

@media (min-width: 768px) {
    .agent-panel h2 {
        font-size: 1.1rem;
    }
}

@media (min-width: 1024px) {
    .agent-panel h2 {
        font-size: 1.2rem;
    }
}

@media (min-width: 1280px) {
    .agent-panel h2 {
        font-size: 1.3rem;
    }
}

.provider-filter {
    display: flex;
    align-items: center;
    gap: 8px;
}

.provider-filter label {
    font-size: 0.75rem;
    color: var(--text-light);
    white-space: nowrap;
    display: none;
}

@media (min-width: 768px) {
    .provider-filter label {
        display: inline;
        font-size: 0.8rem;
    }
}

@media (min-width: 1024px) {
    .provider-filter label {
        font-size: 0.85rem;
    }
}

.provider-filter select {
    padding: 4px 8px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.75rem;
    background: white;
    cursor: pointer;
    transition: border-color 0.2s;
}

@media (min-width: 768px) {
    .provider-filter select {
        padding: 5px 9px;
        font-size: 0.8rem;
    }
}

@media (min-width: 1024px) {
    .provider-filter select {
        padding: 6px 10px;
        font-size: 0.85rem;
    }
}

.provider-filter select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.agent-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 8px 10px 10px 10px;
    overflow-y: auto;
    flex: 1;
}

@media (min-width: 480px) {
    .agent-list {
        padding: 10px 12px 12px 12px;
    }
}

@media (min-width: 768px) {
    .agent-list {
        padding: 12px 15px 15px 15px;
    }
}

@media (min-width: 1024px) {
    .agent-list {
        gap: 10px;
        padding: 15px 20px 20px 20px;
    }
}

@media (min-width: 1280px) {
    .agent-list {
        padding: 15px 25px 25px 25px;
    }
}

.agent-list-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.agent-list-section:not(:last-child) {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.agent-list-section-title {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

@media (min-width: 768px) {
    .agent-list-section-title {
        font-size: 0.75rem;
        letter-spacing: 0.4px;
    }
}

@media (min-width: 1024px) {
    .agent-list-section-title {
        font-size: 0.8rem;
        margin-bottom: 5px;
        letter-spacing: 0.5px;
    }
}

@media (min-width: 1280px) {
    .agent-list-section-title {
        font-size: 0.85rem;
    }
}

.agent-item {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.2s;
    overflow: hidden;
}

.agent-item:hover {
    border-color: var(--primary-color);
    background: #f0f9ff;
}

.agent-item.selected {
    border-color: var(--primary-color);
    background: #dbeafe;
}

.agent-item.offline {
    opacity: 0.5;
}

.agent-item.offline .agent-header {
    cursor: not-allowed;
}

.agent-header {
    padding: 8px 10px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

@media (min-width: 768px) {
    .agent-header {
        padding: 10px 12px;
        gap: 5px;
    }
}

@media (min-width: 1024px) {
    .agent-header {
        padding: 12px 15px;
        gap: 6px;
    }
}

.agent-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 6px;
}

@media (min-width: 768px) {
    .agent-header-row {
        gap: 8px;
    }
}

@media (min-width: 1024px) {
    .agent-header-row {
        gap: 10px;
    }
}

.agent-name {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.85rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@media (min-width: 768px) {
    .agent-name {
        font-size: 0.9rem;
    }
}

@media (min-width: 1024px) {
    .agent-name {
        font-size: 0.95rem;
    }
}

@media (min-width: 1280px) {
    .agent-name {
        font-size: 1rem;
    }
}

.agent-info-compact {
    font-size: 0.65rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}

@media (min-width: 768px) {
    .agent-info-compact {
        font-size: 0.7rem;
        gap: 6px;
    }
}

@media (min-width: 1024px) {
    .agent-info-compact {
        font-size: 0.75rem;
        gap: 8px;
    }
}

.agent-info-compact span:not(:last-child)::after {
    content: "•";
    margin-left: 4px;
    color: var(--border-color);
}

@media (min-width: 768px) {
    .agent-info-compact span:not(:last-child)::after {
        margin-left: 6px;
    }
}

@media (min-width: 1024px) {
    .agent-info-compact span:not(:last-child)::after {
        margin-left: 8px;
    }
}

.agent-ip-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

@media (min-width: 768px) {
    .agent-ip-row {
        gap: 10px;
    }
}

@media (min-width: 1024px) {
    .agent-ip-row {
        gap: 12px;
    }
}

.agent-ip {
    font-size: 0.65rem;
    color: var(--text-light);
    font-family: 'Courier New', monospace;
}

@media (min-width: 768px) {
    .agent-ip {
        font-size: 0.7rem;
    }
}

@media (min-width: 1024px) {
    .agent-ip {
        font-size: 0.75rem;
    }
}

.agent-status {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    white-space: nowrap;
}

.agent-description {
    background: #f8fafc;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
    font-size: 0.8rem;
    color: var(--text-light);
    border-top: 0;
}

.agent-description.expanded {
    padding: 12px 15px;
    max-height: 200px;
    border-top: 1px solid var(--border-color);
}

.agent-expand-arrow {
    font-size: 0.7rem;
    color: var(--text-light);
    transition: transform 0.2s;
    min-width: 12px;
}

.agent-item.expanded .agent-expand-arrow {
    transform: rotate(180deg);
}

.agent-status.online {
    background: #d1fae5;
    color: #065f46;
}

.agent-status.offline {
    background: #fee2e2;
    color: #991b1b;
}

.loading {
    text-align: center;
    padding: 20px;
    color: var(--text-light);
}

/* Command Panel */
.command-panel {
    background: white;
    padding: 10px;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

@media (min-width: 480px) {
    .command-panel {
        padding: 12px;
    }
}

@media (min-width: 768px) {
    .command-panel {
        padding: 15px;
    }
}

@media (min-width: 1024px) {
    .command-panel {
        padding: 18px;
    }
}

@media (min-width: 1280px) {
    .command-panel {
        padding: 20px;
    }
}

@media (min-width: 1600px) {
    .command-panel {
        padding: 25px;
    }
}

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

.form-row {
    display: flex;
    gap: 15px;
    align-items: flex-end;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 150px;
}

.form-group-grow {
    flex: 1;
}

.form-group label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.85rem;
}

.form-group select,
.form-group input {
    padding: 10px 12px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.95rem;
    transition: border-color 0.2s;
    font-family: inherit;
}

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

.form-group select:disabled,
.form-group input:disabled {
    background: #f1f5f9;
    cursor: not-allowed;
}

.form-actions-inline {
    display: flex;
    gap: 8px;
    align-items: flex-end;
    padding-bottom: 2px;
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    white-space: nowrap;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

#execute-btn:hover:not(:disabled) {
    background: #2563eb;
}

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

#cancel-btn:hover {
    background: #dc2626;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.85rem;
    background: var(--text-light);
    color: white;
}

.btn-small:hover {
    background: #475569;
}

/* Selected Node Info */
.selected-node-info {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-left: 4px solid var(--primary-color);
    padding: 10px 14px;
    margin: 15px 0;
    border-radius: 6px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.selected-node-info .info-label {
    color: var(--text-light);
    font-weight: 600;
    font-size: 0.75rem;
}

.selected-node-info .node-text {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 0.8rem;
    padding: 2px 8px;
    background: white;
    border-radius: 4px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

/* Output Section */
.output-section {
    margin-bottom: 20px;
}

.output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.output-header h3 {
    font-size: 1rem;
    color: var(--text-dark);
    font-weight: 600;
    margin: 0;
}

.terminal-wrapper {
    height: 500px;
}

.terminal {
    background: var(--terminal-bg);
    color: var(--terminal-text);
    padding: 10px;
    border-radius: 8px;
    font-family: 'Courier New', 'Consolas', monospace;
    font-size: 0.75rem;
    overflow-y: auto;
    line-height: 1.4;
    height: 100%;
}

@media (min-width: 768px) {
    .terminal {
        padding: 12px;
        font-size: 0.8rem;
    }
}

@media (min-width: 1024px) {
    .terminal {
        padding: 13px;
        font-size: 0.85rem;
        line-height: 1.5;
    }
}

@media (min-width: 1280px) {
    .terminal {
        padding: 15px;
        font-size: 0.9rem;
    }
}

.terminal-prompt {
    color: #6ee7b7;
}

.terminal-output {
    white-space: pre-wrap;
    word-wrap: break-word;
}

.terminal-error {
    color: #fca5a5;
}

.terminal-success {
    color: #6ee7b7;
}

/* History Section */
.history-section {
    border-top: 2px solid var(--border-color);
    padding-top: 20px;
}

.history-section h3 {
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 600;
}

.history-list {
    /* No max-height - let history expand naturally */
}

.history-item {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-bottom: 10px;
    overflow: hidden;
}

.history-header {
    padding: 10px 15px;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.history-header:hover {
    background: #f8fafc;
}

.history-status-icon {
    font-size: 1rem;
    min-width: 20px;
    text-align: center;
}

.history-tool-badge {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.history-tool-badge.ping {
    background: #dbeafe;
    color: #1e40af;
}

.history-tool-badge.mtr {
    background: #fce7f3;
    color: #9f1239;
}

.history-tool-badge.nexttrace {
    background: #dcfce7;
    color: #15803d;
}

.history-target {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: var(--text-dark);
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.history-time {
    font-size: 0.75rem;
    color: var(--text-light);
    white-space: nowrap;
}

.history-output {
    background: var(--terminal-bg);
    color: var(--terminal-text);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease-out;
}

.history-output:not(.collapsed) {
    padding: 15px;
    max-height: none;
    overflow: visible;
}

.history-output.collapsed {
    max-height: 0;
    padding: 0;
    overflow: hidden;
}

.history-output pre {
    margin: 0;
    font-family: 'Courier New', 'Consolas', monospace;
    font-size: 0.85rem;
    white-space: pre-wrap;
    word-wrap: break-word;
    line-height: 1.5;
}

.no-history {
    text-align: center;
    color: var(--text-light);
    padding: 20px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .agent-panel {
        max-height: 400px;
        overflow-y: auto;
    }

    .form-row {
        flex-wrap: wrap;
    }

    .form-group {
        flex: 1 1 200px;
    }

    .form-actions-inline {
        flex: 1 1 100%;
        justify-content: flex-start;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .header {
        padding: 12px 15px;
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .header-left {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    .logo {
        font-size: 1.3rem;
    }

    .subtitle {
        font-size: 0.85rem;
    }

    .connection-status {
        align-self: flex-end;
    }

    .agent-item {
        padding: 12px;
    }

    .command-panel {
        padding: 15px;
    }

    .terminal-wrapper {
        height: 400px;
    }

    .terminal {
        font-size: 0.85rem;
        padding: 12px;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.2rem;
    }

    .subtitle {
        font-size: 0.8rem;
    }

    .form-group label {
        font-size: 0.8rem;
    }

    .form-group select,
    .form-group input {
        padding: 8px 10px;
        font-size: 0.9rem;
    }

    button {
        padding: 8px 16px;
        font-size: 0.9rem;
    }

    .terminal-wrapper {
        height: 350px;
    }

    .terminal {
        font-size: 0.8rem;
        padding: 10px;
    }

    .history-time {
        font-size: 0.75rem;
    }

    .history-command {
        font-size: 0.85rem;
    }

    .history-output pre {
        font-size: 0.8rem;
    }

    .history-header {
        gap: 8px;
        padding: 10px 12px;
    }

    .history-time,
    .history-command {
        flex-basis: 100%;
    }

    .history-arrow {
        flex-basis: auto;
    }
}

/* Scrollbar Styling */
.terminal::-webkit-scrollbar,
.history-content::-webkit-scrollbar,
.agent-list::-webkit-scrollbar {
    width: 8px;
}

.terminal::-webkit-scrollbar-track {
    background: #1e293b;
}

.terminal::-webkit-scrollbar-thumb {
    background: #475569;
    border-radius: 4px;
}

.history-content::-webkit-scrollbar-track {
    background: #f1f5f9;
}

.history-content::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

.agent-list::-webkit-scrollbar-track {
    background: #f8fafc;
}

.agent-list::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

.agent-list::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Footer */
.page-footer {
    margin-top: 30px;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-content {
    font-size: 0.85rem;
    color: var(--text-light);
    line-height: 1.6;
}

.footer-content a {
    color: var(--primary-color);
    text-decoration: none;
}

.footer-content a:hover {
    text-decoration: underline;
}

/* Footer responsive */
@media (max-width: 768px) {
    .page-footer {
        margin-top: 20px;
        padding: 15px 0;
    }

    .footer-content {
        font-size: 0.8rem;
    }
}