:root {
    --bg-primary: #0f1428;
    --bg-secondary: #1a1f3a;
    --bg-tertiary: #252b48;
    --bg-hover: #2d3454;

    --accent-primary: #00d4ff;
    --accent-secondary: #7c3aed;
    --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);

    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --border-color: #2d3548;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);

    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;

    --transition: all 0.2s ease;
}

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

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

.app-container {
    max-width: 1920px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 24px 32px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo-icon {
    width: 52px;
    height: 52px;
    color: var(--accent-primary);
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5));
}

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-actions {
    display: flex;
    gap: 12px;
}

/* Buttons */
.btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    text-transform: none;
}

.btn svg {
    width: 18px;
    height: 18px;
}

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

.btn-secondary {
    background: var(--bg-tertiary);
}

/* Warning */
.warning {
    background: rgba(245, 158, 11, 0.1);
    border: 2px solid var(--warning);
    padding: 16px 24px;
    margin: 0 0 24px 0;
    border-radius: 12px;
}

.warning p {
    color: var(--warning);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Form Section */
.form-section {
    max-width: 1600px;
    margin: 0 auto;
}

.form-card {
    background: var(--bg-secondary);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 32px;
    box-shadow: var(--shadow-lg);
}

.form-section-header {
    margin-top: 32px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border-color);
}

.form-section-header:first-child {
    margin-top: 0;
}

.section-header-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.section-toggle {
    width: 36px;
    height: 28px;
    padding: 0;
    border-radius: 999px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    justify-content: center;
}

.section-toggle:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.section-toggle.is-collapsed {
    animation: collapsed-blink 1.4s ease-in-out infinite;
}

.chevron {
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--text-secondary);
    border-bottom: 2px solid var(--text-secondary);
    transform: rotate(45deg);
    transition: var(--transition);
}

.section-toggle:hover .chevron {
    border-color: var(--text-primary);
}

.section-toggle[aria-expanded="true"] .chevron {
    transform: rotate(-135deg);
}

.section-toggle.is-collapsed[aria-expanded="true"] {
    animation: none;
}

@keyframes collapsed-blink {
    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(0, 212, 255, 0);
        border-color: var(--border-color);
    }
    50% {
        box-shadow: 0 0 0 6px rgba(0, 212, 255, 0.12);
        border-color: var(--accent-primary);
    }
}

.collapsible-content {
    display: block;
}

.collapsible-content.collapsed {
    display: none;
}

.form-section-header h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 28px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.form-group input,
.form-group select {
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-primary);
    transition: var(--transition);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: var(--bg-secondary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.15);
}

/* Hide number input spinners */
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] {
    -moz-appearance: textfield;
}

.form-group small {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 6px;
}

/* Port Tabs */
.port-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.port-tab {
    flex: 1;
    padding: 12px 24px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.port-tab:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.port-tab.active {
    background: var(--accent-gradient);
    border: 0;
    color: white;
    background-clip: padding-box;
}

.port-tab-content {
    display: none;
}

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

.range-info {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: -10px;
    margin-bottom: 16px;
}

/* Buttons */
.button-group {
    display: flex;
    gap: 12px;
    margin-top: 28px;
    flex-wrap: wrap;
}

button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.5px;
}

button.primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 16px rgba(0, 212, 255, 0.4);
}

button.primary:hover:not(:disabled) {
    filter: brightness(1.15);
    box-shadow: 0 6px 24px rgba(0, 212, 255, 0.6);
    transform: translateY(-2px);
}

button.secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

button.secondary:hover:not(:disabled) {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
}

button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none !important;
}

/* Progress Section */
.progress-section {
    padding: 24px 32px;
    background: rgba(21, 25, 52, 0.6);
    border-top: 1px solid var(--border-color);
    display: none;
}

.progress-section.active {
    display: block;
}

.progress-bar {
    width: 100%;
    height: 32px;
    background: var(--bg-tertiary);
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    border: 1px solid var(--border-color);
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    width: 0%;
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 13px;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.progress-info {
    margin-top: 12px;
    font-size: 13px;
    color: var(--text-secondary);
    text-align: center;
}

/* Results Section */
.results-section {
    padding: 32px;
    display: none;
    max-width: 1600px;
    margin: 0 auto;
}

.results-section.active {
    display: block;
}

.results-card {
    background: var(--bg-secondary);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 32px;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.results-header h2 {
    font-size: 20px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.results-stats {
    font-size: 13px;
    color: var(--text-secondary);
    background: rgba(0, 212, 255, 0.1);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid rgba(0, 212, 255, 0.3);
    font-weight: 600;
}

#resultsContainer {
    overflow-x: auto;
}

#resultsContainer::-webkit-scrollbar {
    height: 10px;
}

#resultsContainer::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

#resultsContainer::-webkit-scrollbar-thumb {
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 5px;
}

/* Table */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

table thead {
    background: var(--bg-primary);
}

table th {
    padding: 16px 20px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-size: 11px;
    border-bottom: 2px solid var(--border-color);
}

table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

table tbody tr.row-hover td,
table tbody td.group-hover {
    background: rgba(0, 212, 255, 0.05);
}

table td {
    padding: 16px 20px;
    color: var(--text-primary);
}

/* Status Badge */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-readable {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.4);
}

.status-cors {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.4);
}

.status-unreachable {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.4);
}

.status-not-nmos {
    background: rgba(59, 130, 246, 0.15);
    color: var(--info);
    border: 1px solid rgba(59, 130, 246, 0.4);
}

/* Probability */
.probability-high {
    color: var(--success);
    font-weight: 700;
}

.probability-medium {
    color: var(--warning);
    font-weight: 700;
}

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

/* Links */
.links {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.link-btn {
    padding: 6px 14px;
    font-size: 11px;
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-primary);
    text-decoration: none;
    border-radius: 6px;
    border: 1px solid rgba(0, 212, 255, 0.3);
    transition: var(--transition);
    font-weight: 600;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.link-btn:hover {
    background: rgba(0, 212, 255, 0.2);
    border-color: var(--accent-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
}

/* Empty State */
.no-results {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-muted);
}

.no-results p {
    font-size: 15px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 16px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.3s ease-out;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-large {
    max-width: 800px;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 32px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 20px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 32px;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: var(--transition);
}

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

/* Settings */
#settingsModal .modal-content {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    height: 75vh;
}

#settingsModal .modal-header {
    flex-shrink: 0;
}

.settings-modal-body {
    display: flex;
    min-height: 0;
    flex: 1;
    overflow: hidden;
}

.settings-sidebar {
    width: 130px;
    flex-shrink: 0;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 8px 0;
    gap: 2px;
    overflow-y: auto;
}

.settings-tab {
    width: 100%;
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-right: 3px solid transparent;
    border-radius: 0;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 500;
    transition: var(--transition);
    text-align: left;
    white-space: normal;
    line-height: 1.3;
}

.settings-tab svg {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    opacity: 0.7;
}

.settings-tab:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.settings-tab:hover svg {
    opacity: 1;
}

.settings-tab.active {
    color: var(--accent-primary);
    border-right-color: var(--accent-primary);
    background: var(--bg-tertiary);
    font-weight: 600;
}

.settings-tab.active svg {
    opacity: 1;
}

.settings-panel {
    flex: 1;
    overflow-y: auto;
    min-width: 0;
}

.settings-panel::-webkit-scrollbar {
    width: 6px;
}

.settings-panel::-webkit-scrollbar-track {
    background: transparent;
}

.settings-panel::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.settings-panel::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

.settings-tab-content {
    display: none;
    padding: 24px;
}

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

.modal-body h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 16px 0;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-body h4 {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 20px 0 12px 0;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.modal-body p {
    margin: 12px 0;
    line-height: 1.6;
    color: var(--text-secondary);
}

.modal-body ul {
    margin: 12px 0;
    padding-left: 20px;
}

.modal-body ol {
    margin: 12px 0;
    padding-left: 20px;
}

.modal-body li {
    margin: 8px 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

.modal-footer-note {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    color: var(--warning);
    font-size: 13px;
}

/* Info and Warning Boxes */
.info-box {
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--info);
    padding: 16px;
    margin: 16px 0;
    border-radius: 8px;
}

.info-box strong {
    display: block;
    color: var(--info);
    font-size: 14px;
    margin-bottom: 8px;
}

.info-box p {
    margin: 0;
    color: var(--text-secondary);
}

.warning-box {
    background: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--warning);
    padding: 16px;
    margin: 16px 0;
    border-radius: 8px;
}

.warning-box strong {
    display: block;
    color: var(--warning);
    font-size: 14px;
    margin-bottom: 8px;
}

.warning-box p {
    margin: 0;
    color: var(--text-secondary);
}

/* Status List */
.status-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 16px 0;
}

.status-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.status-item p {
    margin: 0;
    font-size: 13px;
}

/* About Sections */
.about-section {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
}

.about-section h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.about-section h4 {
    font-size: 16px;
    font-weight: 600;
    margin-top: 24px;
    margin-bottom: 12px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.about-section p {
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.6;
}

/* How It Works list styles inside about-section card */
.about-section ul {
    list-style: none;
    padding: 0;
    margin: 0 0 16px 0;
}

.about-section ul li {
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.6;
    padding-left: 16px;
    position: relative;
}

.about-section ul li::before {
    content: '›';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: 700;
}

.howto-steps {
    padding-left: 20px;
    margin: 0 0 16px 0;
}

.howto-steps li {
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.6;
}

/* Version Tag */
.version-tag {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
    margin-left: 8px;
}

/* About Links */
.about-section .about-links li::before {
    content: none;
}

.about-links {
    list-style: none;
    padding: 0;
    margin: 0 0 16px 0;
}

.about-links li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.about-links li:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    transform: translateX(4px);
}

.about-section a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color 0.2s ease;
    display: inline-flex;
    align-items: center;
}

.about-links li a + a {
    font-size: 12px;
    opacity: 0.7;
    margin-left: auto;
}

.about-links li a + a .external-icon {
    width: 12px;
    height: 12px;
}

.about-section a:hover {
    color: var(--accent-secondary);
}

.about-section a:hover .external-icon {
    opacity: 1;
}

.link-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    opacity: 0.8;
}

.github-icon {
    color: var(--accent-primary);
}

.user-icon {
    color: var(--accent-secondary);
}

.globe-icon {
    color: #00e5ff;
}

.external-icon {
    width: 14px;
    height: 14px;
    margin-left: 4px;
    opacity: 0.6;
    vertical-align: middle;
    transition: opacity 0.2s ease;
}

/* Privacy Content */
.privacy-content {
    padding-top: 8px;
}

.privacy-content h5 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 20px;
    margin-bottom: 8px;
}

.privacy-content p {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.6;
    margin-bottom: 12px;
}

.privacy-content ul {
    list-style: disc;
    padding-left: 24px;
    margin-bottom: 12px;
}

.privacy-content ul li {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.6;
    margin-bottom: 6px;
}

.privacy-content a {
    color: var(--accent-primary);
    text-decoration: underline;
}

.privacy-updated {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-style: italic;
}

/* Support Section */
.support-section {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.install-btn {
    margin-bottom: 24px;
}

.support-text {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 16px;
    font-style: italic;
}

.support-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: linear-gradient(135deg, #0070ba, #1ab7ea);
    color: white;
    text-decoration: none;
    border-radius: 24px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 112, 186, 0.3);
}

.support-link:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 112, 186, 0.5);
    background: linear-gradient(135deg, #005ea6, #1ab7ea);
}

.paypal-icon {
    width: 20px;
    height: 20px;
    color: white;
}

/* Accordion */
.accordion {
    margin: 24px 0;
}

.accordion-item {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.accordion-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.accordion-header:hover {
    background: rgba(0, 212, 255, 0.05);
}

.accordion-header span {
    flex: 1;
}

.accordion-icon {
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.accordion-header.active .accordion-icon {
    transform: rotate(180deg);
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.accordion-content.active {
    max-height: 1000px;
    padding: 0 20px 20px 20px;
}

.accordion-content p {
    margin: 12px 0;
    font-size: 13px;
    line-height: 1.6;
}

.accordion-content ul {
    margin: 12px 0;
    padding-left: 20px;
}

.accordion-content li {
    margin: 8px 0;
    font-size: 13px;
}

.settings-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.modal-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 13px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.modal-btn svg {
    flex-shrink: 0;
}

.modal-btn.secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.modal-btn.secondary:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    transform: translateY(-1px);
}

/* About tab accordion overrides */
#aboutTab .accordion-item {
    background: var(--bg-secondary);
    margin-top: 16px;
    margin-bottom: 0;
}

#aboutTab .accordion-item:hover {
    border-color: var(--accent-primary);
}

#aboutTab .accordion-header {
    gap: 12px;
    padding: 14px 16px;
    font-size: 15px;
    font-weight: 600;
    justify-content: flex-start;
}

#aboutTab .accordion-header:hover {
    background: var(--bg-tertiary);
}

#aboutTab .accordion-icon {
    width: 20px;
    height: 20px;
    color: var(--accent-primary);
    transform: rotate(0deg);
}

#aboutTab .accordion-header.active .accordion-icon {
    transform: rotate(90deg);
}

#aboutTab .accordion-content > * {
    padding: 0 16px 16px 16px;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        padding: 16px 20px;
        flex-direction: column;
        gap: 16px;
    }

    .header-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .form-section,
    .results-section {
        padding: 20px;
    }

    .form-card {
        padding: 24px;
    }

    .form-grid,
    .form-row {
        grid-template-columns: 1fr;
    }

    .form-section-header {
        margin-top: 24px;
    }

    .button-group {
        flex-direction: column;
    }

    button {
        width: 100%;
        justify-content: center;
    }

    .port-tabs {
        flex-direction: column;
    }

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

    .modal-tab {
        font-size: 11px;
        padding: 12px 16px;
    }

    .modal-content {
        max-width: 95%;
        max-height: 90vh;
    }

    .modal-body {
        padding: 20px;
    }

    .settings-actions {
        flex-direction: column;
    }

    .modal-btn {
        width: 100%;
        justify-content: center;
    }

    table {
        font-size: 11px;
    }

    table th,
    table td {
        padding: 12px 10px;
    }

    .results-header {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
        padding: 20px;
    }

    .warning {
        margin: 16px 20px;
        padding: 12px 16px;
    }

    .progress-section {
        padding: 20px;
    }
}

/* Cookie Consent Banner */
.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    backdrop-filter: blur(10px);
    border-top: 2px solid var(--accent-primary);
    padding: 20px;
    z-index: 10000;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.4s ease-out;
}

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

.cookie-consent.hidden {
    display: none;
}

.cookie-consent-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.cookie-icon {
    width: 48px;
    height: 48px;
    color: var(--accent-primary);
    flex-shrink: 0;
}

.cookie-text {
    flex: 1;
    min-width: 300px;
}

.cookie-text p {
    color: var(--text-primary);
    margin: 0 0 8px 0;
    font-size: 14px;
    line-height: 1.5;
}

.cookie-learn-more {
    color: var(--accent-primary);
    text-decoration: underline;
    font-size: 13px;
    cursor: pointer;
    transition: color 0.2s ease;
}

.cookie-learn-more:hover {
    color: var(--accent-secondary);
}

.cookie-buttons {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

.btn-cookie {
    padding: 10px 24px;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-cookie-decline {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-cookie-decline:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.btn-cookie-accept {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 2px 8px rgba(0, 229, 255, 0.3);
}

.btn-cookie-accept:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 229, 255, 0.5);
}

@media (max-width: 768px) {
    .cookie-consent-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-buttons {
        width: 100%;
        justify-content: center;
    }

    .btn-cookie {
        flex: 1;
    }
}

/* Install Tab */
.install-status-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-top: 20px;
}

.install-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.install-status-badge svg {
    width: 16px;
    height: 16px;
}

.install-status-badge.installed {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.install-status-badge.installable {
    background: rgba(0, 212, 255, 0.15);
    color: var(--accent-primary);
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.install-status-badge.unavailable {
    background: rgba(100, 116, 139, 0.15);
    color: var(--text-muted);
    border: 1px solid rgba(100, 116, 139, 0.3);
}