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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

/* Header */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.header-text {
    flex: 1;
    text-align: center;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

header p {
    font-size: 1.1em;
    opacity: 0.9;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-actions .btn {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 8px 16px;
    font-size: 0.9em;
}

.header-actions .btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.language-selector {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.language-selector label {
    font-weight: 500;
}

.language-selector select,
.setting-group select {
    background: white;
    border: 1px solid #ddd;
    padding: 6px 10px;
    border-radius: 5px;
    font-size: 0.9em;
    cursor: pointer;
    color: #333;
    width: 100%;
    max-width: 200px;
}

.language-selector select:focus,
.setting-group select:focus {
    outline: 2px solid #667eea;
    border-color: #667eea;
}

/* Main Content */
main {
    padding: 30px;
}

section {
    margin-bottom: 30px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
}

h2 {
    color: #667eea;
    margin-bottom: 15px;
    font-size: 1.5em;
}

/* Room Input */
.room-input-group {
    margin-bottom: 15px;
}

.room-input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #667eea;
}

.room-input-group input[type="text"] {
    width: 100%;
    padding: 10px;
    font-size: 1em;
    border: 2px solid #667eea;
    border-radius: 5px;
    background: white;
    margin-bottom: 5px;
}

.room-input-group input[type="text"]:focus {
    outline: none;
    border-color: #764ba2;
}

.room-input-group .description {
    font-size: 0.85em;
    color: #666;
    margin: 0;
}

/* Room Info */
.room-info {
    background: #e7f3ff;
    border-left: 4px solid #667eea;
}

.room-info #roomName {
    font-weight: bold;
    color: #764ba2;
}
.room-info {
    background: #e7f3ff;
    border-left: 4px solid #667eea;
}

.room-info #roomName {
    font-weight: bold;
    color: #764ba2;
}

.status-container {
    display: flex;
    align-items: center;
    margin-top: 10px;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 8px;
    display: inline-block;
    background: #6c757d; /* Default gray: disconnected state */
    transition: background-color 0.3s ease;
}

.status-indicator.connecting {
    background: #ffc107;
    animation: pulse 1.5s infinite;
}

.status-indicator.connected {
    background: #28a745;
}

.status-indicator.error {
    background: #dc3545;
}

.status-indicator.warning {
    background: #fd7e14;
}

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

.room-info #connectionStatus {
    font-weight: bold;
}

/* Share URL Section */
.share-url-section {
    margin-bottom: 30px;
    padding: 20px;
    background: #f0f8ff;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.share-url-section p {
    margin-bottom: 10px;
    font-weight: 600;
    color: #667eea;
}

.share-url-input {
    width: 100%;
    padding: 10px;
    font-size: 0.95em;
    border: 2px solid #667eea;
    border-radius: 5px;
    background: white;
    margin-bottom: 10px;
    font-family: monospace;
}

.share-url-input:focus {
    outline: none;
    border-color: #764ba2;
}

/* Settings */
.setting-group {
    margin-bottom: 20px;
}

.setting-group label {
    display: flex;
    align-items: center;
    font-weight: 600;
    cursor: pointer;
    font-size: 1.1em;
}

.setting-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-right: 10px;
    cursor: pointer;
}

.description {
    margin-top: 5px;
    margin-left: 30px;
    color: #666;
    font-size: 0.9em;
}

/* MIDI Devices */
.device-group {
    margin-bottom: 15px;
}

.device-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

.device-group select {
    width: 100%;
    padding: 10px;
    font-size: 1em;
    border: 2px solid #ddd;
    border-radius: 5px;
    background: white;
    cursor: pointer;
}

.device-group select:focus {
    outline: none;
    border-color: #667eea;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    font-size: 1em;
    font-weight: 600;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-right: 10px;
    margin-bottom: 10px;
}

.btn:focus {
    outline: 2px solid #667eea;
    outline-offset: 2px;
}

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

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #6c757d;
    color: white;
    margin: 5px;
}

.btn-secondary:hover:not(:disabled) {
    background: #5a6268;
}

/* Advanced section */
.advanced {
    background: #f8f9fa;
    border-left: 4px solid #667eea;
    padding: 10px 20px;
    margin-bottom: 20px;
    border-radius: 5px;
}

.advanced summary {
    cursor: pointer;
    user-select: none;
    list-style: none;
    display: flex;
    align-items: center;
}

.advanced summary::-webkit-details-marker {
    display: none;
}

.advanced summary::before {
    content: '▶';
    display: inline-block;
    margin-right: 10px;
    transition: transform 0.2s;
    color: #667eea;
}

.advanced[open] summary::before {
    transform: rotate(90deg);
}

.advanced h2 {
    color: #667eea;
    margin: 10px 0;
    display: inline;
}

.advanced h3 {
    color: #667eea;
    margin-top: 20px;
    margin-bottom: 10px;
    font-size: 1.2em;
}

.advanced h3:first-child {
    margin-top: 0;
}

.advanced .advanced-content {
    padding-top: 15px;
}

.advanced .description {
    color: #666;
    font-size: 0.9em;
    margin-top: 10px;
}

.advanced label {
    display: block;
    margin: 10px 0;
    color: #333;
}

/* Messages section (now inside Advanced) */
#messageLog {
    background: white;
    padding: 15px;
    border-radius: 5px;
    border: 1px solid #ddd;
    min-height: 100px;
    max-height: 300px;
    overflow-y: auto;
    margin-top: 10px;
}

.message {
    padding: 8px;
    margin-bottom: 8px;
    border-radius: 4px;
    font-size: 0.95em;
}

.message.info {
    background: #d1ecf1;
    border-left: 3px solid #0c5460;
    color: #0c5460;
}

.message.success {
    background: #d4edda;
    border-left: 3px solid #155724;
    color: #155724;
}

.message.error {
    background: #f8d7da;
    border-left: 3px solid #721c24;
    color: #721c24;
}

.message.warning {
    background: #fff3cd;
    border-left: 3px solid #856404;
    color: #856404;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: #c82333;
}

/* Footer */
footer {
    background: #f8f9fa;
    padding: 20px;
    text-align: center;
    color: #666;
    border-top: 1px solid #ddd;
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* MIDI Activity Display */
#midiActivity:not(.sr-only) {
    position: static;
    width: auto;
    height: auto;
    padding: 12px 16px;
    margin: 20px 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
    background: #e8f5e9;
    border: 2px solid #4caf50;
    border-radius: 5px;
    font-size: 1.1em;
    font-weight: 600;
    color: #2e7d32;
    text-align: center;
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Responsive */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }

    header h1 {
        font-size: 1.8em;
    }

    main {
        padding: 15px;
    }

    section {
        padding: 15px;
    }
}

/* Help Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background: white;
    border-radius: 10px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.modal-header {
    padding: 20px 30px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 10px 10px 0 0;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5em;
}

.close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 2em;
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.2s;
}

.close-btn:hover {
    opacity: 0.7;
}

.modal-body {
    padding: 30px;
    overflow-y: auto;
    flex: 1;
}

.help-step {
    margin-bottom: 25px;
}

.help-step h3 {
    color: #667eea;
    margin-bottom: 10px;
    font-size: 1.1em;
}

.help-step p {
    color: #555;
    line-height: 1.6;
}

.help-tip {
    background: #f0f7ff;
    border-left: 4px solid #667eea;
    padding: 15px;
    border-radius: 5px;
    margin-top: 20px;
}

.help-tip strong {
    color: #667eea;
    display: block;
    margin-bottom: 8px;
}

.help-tip p {
    margin: 0;
    color: #555;
}

.modal-footer {
    padding: 15px 30px;
    border-top: 1px solid #eee;
    text-align: right;
}

.modal-footer .btn {
    min-width: 100px;
}

@media (max-width: 600px) {
    .modal-content {
        max-height: 95vh;
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 15px 20px;
    }
}

/* Help Page */
.help-page main {
    padding: 30px;
}

.help-navigation {
    margin-bottom: 30px;
}

.help-navigation button {
    min-width: 150px;
}

.help-content {
    max-width: 800px;
    margin: 0 auto;
}

.help-content h2 {
    color: #667eea;
    margin-top: 30px;
    margin-bottom: 15px;
    font-size: 1.5em;
}

.help-content h3 {
    color: #764ba2;
    margin-top: 20px;
    margin-bottom: 10px;
    font-size: 1.2em;
}

.help-content ul {
    margin: 15px 0;
    padding-left: 30px;
}

.help-content li {
    margin: 10px 0;
    line-height: 1.6;
}

.help-content p {
    line-height: 1.8;
    margin: 15px 0;
}

.help-content strong {
    color: #667eea;
}

footer {
    text-align: center;
    padding: 20px;
    background: #f5f5f5;
    margin-top: 30px;
}

footer a {
    color: #667eea;
    text-decoration: none;
}

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

/* Chat Section */
.chat-section {
    margin: 20px 0;
}

.chat-section summary {
    cursor: pointer;
    padding: 15px 20px;
    background: #f8f9fa;
    border-radius: 5px;
    transition: background 0.3s;
}

.chat-section summary:hover {
    background: #e9ecef;
}

.chat-section summary h2 {
    margin: 0;
    font-size: 1.3em;
    color: #667eea;
}

.chat-content {
    padding: 20px;
}

.chat-log {
    min-height: 200px;
    max-height: 400px;
    overflow-y: auto;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 10px;
    margin-bottom: 15px;
    background: #f8f9fa;
}

.chat-message {
    margin-bottom: 12px;
    padding: 8px 12px;
    border-radius: 8px;
    max-width: 80%;
    word-wrap: break-word;
}

.chat-message.sent {
    background: #667eea;
    color: white;
    margin-left: auto;
    text-align: right;
}

.chat-message.received {
    background: #e9ecef;
    color: #333;
    margin-right: auto;
    text-align: left;
}

.chat-message-sender {
    font-size: 0.8em;
    font-weight: bold;
    margin-bottom: 4px;
    opacity: 0.8;
}

.chat-message-text {
    font-size: 0.95em;
}

.chat-message-time {
    font-size: 0.75em;
    margin-top: 4px;
    opacity: 0.7;
}

.chat-input-group {
    display: flex;
    gap: 10px;
}

.chat-input-group input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1em;
}

.chat-input-group input:focus {
    outline: 2px solid #667eea;
    border-color: #667eea;
}

.chat-input-group input:disabled {
    background: #f5f5f5;
    cursor: not-allowed;
}

.chat-input-group button {
    padding: 10px 20px;
    white-space: nowrap;
}