/* NetPulse Looking Glass Styles */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --success-color: #16a34a;
    --warning-color: #d97706;
    --error-color: #dc2626;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --code-bg: #1e293b;
    --code-text: #e2e8f0;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

header .subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.nav-tabs .tab {
    padding: 0.75rem 1.25rem;
    color: var(--text-muted);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.nav-tabs .tab:hover {
    color: var(--primary-color);
}

.nav-tabs .tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Tab Content */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Card */
.card {
    background: var(--card-bg);
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card h2 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.form-group .help-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.form-input,
.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    transition: border-color 0.15s, box-shadow 0.15s;
    background: var(--card-bg);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* Test type buttons */
.test-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 0.75rem;
}

.test-btn {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 0.5rem;
    background: var(--card-bg);
    cursor: pointer;
    transition: all 0.15s;
    text-align: center;
}

.test-btn:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.test-btn.active {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
}

.test-btn input {
    display: none;
}

.test-btn .test-name {
    font-weight: 600;
    font-size: 0.9rem;
    display: block;
}

.test-btn .test-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Submit button */
.btn-submit {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    background: var(--primary-color);
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background 0.15s;
}

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

.btn-submit:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
}

/* CAPTCHA */
.captcha-container {
    display: flex;
    justify-content: center;
    margin: 1.5rem 0;
}

/* Results */
.results {
    display: none;
}

.results.show,
.results:not(.hidden) {
    display: block;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.result-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.result-meta span {
    margin-left: 1rem;
}

.result-output {
    background: var(--code-bg);
    color: var(--code-text);
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
    font-size: 0.85rem;
    padding: 1.25rem;
    border-radius: 0.5rem;
    overflow-x: auto;
}

.result-output pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    line-height: 1.5;
    margin: 0;
}

.result-command {
    color: var(--success-color);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Error/Alert messages */
.error-message,
.alert-error {
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.alert-success {
    background: rgba(22, 163, 74, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.alert-warning {
    background: rgba(217, 119, 6, 0.1);
    border: 1px solid var(--warning-color);
    color: var(--warning-color);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

/* Loading spinner */
.loading {
    display: none;
    text-align: center;
    padding: 2rem;
}

.loading.show,
.loading:not(.hidden) {
    display: block;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

/* Network Status */
.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.status-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
}

.status-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.status-header h3 {
    margin: 0;
    font-size: 1rem;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

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

.status-down {
    background: var(--error-color);
}

.status-details p {
    font-size: 0.85rem;
    margin: 0.25rem 0;
}

.status-connections {
    margin-top: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.status-connections h4 {
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.status-connections ul {
    list-style: none;
    font-size: 0.85rem;
}

.status-connections li {
    padding: 0.25rem 0;
}

.conn-type {
    font-size: 0.7rem;
    padding: 0.15rem 0.4rem;
    border-radius: 0.25rem;
    margin-right: 0.5rem;
}

.conn-transit { background: #dbeafe; color: #1e40af; }
.conn-ix { background: #dcfce7; color: #166534; }
.conn-pni { background: #fef3c7; color: #92400e; }

.conn-asn {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 0.5rem;
}

/* API Documentation */
.endpoint {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: 0.5rem;
}

.endpoint h4 {
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.endpoint .method {
    background: var(--success-color);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    margin-right: 0.5rem;
}

.endpoint pre {
    background: var(--code-bg);
    color: var(--code-text);
    padding: 0.75rem;
    border-radius: 0.25rem;
    overflow-x: auto;
    font-size: 0.85rem;
}

.endpoint code {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
}

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

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

/* Utilities */
.hidden {
    display: none !important;
}

code {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
    background: var(--bg-color);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-size: 0.9em;
}

/* Responsive */
@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }

    .test-buttons {
        grid-template-columns: 1fr 1fr;
    }

    .nav-tabs {
        flex-wrap: wrap;
    }

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

    .result-meta span {
        margin-left: 0;
        margin-right: 1rem;
    }
}

/* Math CAPTCHA styles */
.math-captcha {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.captcha-question {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
}

.captcha-input {
    width: 100px !important;
    text-align: center;
    font-size: 1.1rem;
}