:root {
    --primary-color: #00ff41;
    --secondary-color: #0f0;
    --bg-color: #0a0e27;
    --panel-bg: #111827;
    --text-color: #e0e0e0;
    --border-color: #1e3a5f;
    --glow: 0 0 10px rgba(0, 255, 65, 0.5);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.5);
}

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

@font-face {
    font-family: 'Terminal';
    src: local('Courier New'), local('Consolas'), monospace;
}

body {
    font-family: 'Terminal', 'Courier New', monospace;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

.scanline {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(255, 255, 255, 0) 50%,
        rgba(0, 0, 0, 0.1) 50%
    );
    background-size: 100% 4px;
    pointer-events: none;
    z-index: 9999;
    animation: scanline 8s linear infinite;
}

@keyframes scanline {
    0% { transform: translateY(0); }
    100% { transform: translateY(4px); }
}

.crt-effect {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
    pointer-events: none;
    z-index: 9998;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: var(--panel-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

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

.wave-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(90deg, 
        var(--primary-color) 0%, 
        var(--secondary-color) 50%, 
        var(--primary-color) 100%);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
    box-shadow: var(--glow);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.logo h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-shadow: var(--glow);
    letter-spacing: 4px;
}

.status-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(0, 255, 65, 0.1);
    border: 1px solid var(--primary-color);
    border-radius: 4px;
}

.status-indicator {
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: blink 1s infinite;
    box-shadow: var(--glow);
}

@keyframes blink {
    0%, 50%, 100% { opacity: 1; }
    25%, 75% { opacity: 0.3; }
}

.status-text {
    color: var(--primary-color);
    font-weight: bold;
    letter-spacing: 2px;
}

.main-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.panel {
    background: var(--panel-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.panel:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 255, 65, 0.3);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

.panel-header h2 {
    color: var(--primary-color);
    font-size: 1.2rem;
    letter-spacing: 3px;
}

.panel-lights {
    display: flex;
    gap: 8px;
}

.light {
    width: 10px;
    height: 10px;
    background: var(--primary-color);
    border-radius: 50%;
    box-shadow: var(--glow);
    animation: light-flicker 3s infinite;
}

.light:nth-child(2) {
    animation-delay: 1s;
}

.light:nth-child(3) {
    animation-delay: 2s;
}

@keyframes light-flicker {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-size: 0.9rem;
    letter-spacing: 2px;
}

textarea {
    width: 100%;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    padding: 12px;
    color: var(--text-color);
    font-family: 'Terminal', monospace;
    font-size: 1rem;
    resize: vertical;
    transition: all 0.3s ease;
}

textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: var(--glow);
}

textarea::placeholder {
    color: rgba(224, 224, 224, 0.3);
}

.morse-display, .text-display {
    min-height: 80px;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    padding: 12px;
    color: var(--primary-color);
    font-size: 1.1rem;
    letter-spacing: 2px;
    word-break: break-all;
    line-height: 1.8;
}

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

.control-panel {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.btn {
    flex: 1;
    min-width: 120px;
    padding: 12px 24px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    background: transparent;
    color: var(--text-color);
    font-family: 'Terminal', monospace;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 65, 0.3), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

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

.btn-primary:hover {
    background: rgba(0, 255, 65, 0.2);
    box-shadow: var(--glow);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn:active {
    transform: scale(0.95);
}

.btn-mini {
    padding: 6px 12px;
    font-size: 0.75rem;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.btn-mini:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

#signalCanvas {
    width: 100%;
    height: 200px;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    display: block;
}

.led-indicator {
    width: 60px;
    height: 60px;
    background: #333;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    margin: 20px auto 0;
    transition: all 0.1s ease;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
}

.led-indicator.active {
    background: var(--primary-color);
    box-shadow: var(--glow), inset 0 0 20px rgba(255, 255, 255, 0.8);
}

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

.setting-group label {
    display: block;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-size: 0.9rem;
    letter-spacing: 2px;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--glow);
}

input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--glow);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.checkbox-group label {
    margin: 0;
    cursor: pointer;
}

.history-list {
    max-height: 400px;
    overflow-y: auto;
    padding: 10px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 4px;
}

.history-item {
    padding: 12px;
    margin-bottom: 10px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.history-item:hover {
    border-color: var(--primary-color);
    background: rgba(0, 255, 65, 0.05);
}

.history-time {
    color: var(--primary-color);
    font-size: 0.75rem;
    margin-bottom: 5px;
}

.history-text {
    color: var(--text-color);
    margin-bottom: 5px;
    font-size: 0.9rem;
}

.history-morse {
    color: var(--secondary-color);
    font-size: 0.85rem;
    word-break: break-all;
}

.telegraph-controls {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 20px;
}

.telegraph-btn {
    padding: 30px 20px;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--primary-color);
    font-family: 'Terminal', monospace;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.telegraph-btn:hover {
    border-color: var(--primary-color);
    background: rgba(0, 255, 65, 0.1);
}

.telegraph-btn:active {
    transform: scale(0.95);
    background: rgba(0, 255, 65, 0.3);
    box-shadow: var(--glow);
}

.morse-symbol {
    font-size: 3rem;
    font-weight: bold;
}

.key-hint {
    font-size: 0.8rem;
    letter-spacing: 2px;
}

.manual-output {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

.morse-table {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 4px;
    max-height: 400px;
    overflow-y: auto;
}

.morse-item {
    padding: 10px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-align: center;
    transition: all 0.3s ease;
}

.morse-item:hover {
    border-color: var(--primary-color);
    background: rgba(0, 255, 65, 0.05);
}

.morse-char {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-color);
    display: block;
    margin-bottom: 5px;
}

.morse-code {
    font-size: 1rem;
    color: var(--primary-color);
    letter-spacing: 2px;
}

.footer {
    text-align: center;
    padding: 20px;
    background: var(--panel-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    margin-top: 20px;
    color: var(--text-color);
}

.footer p {
    font-size: 0.9rem;
    letter-spacing: 2px;
}

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.5);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

@media (max-width: 768px) {
    .main-grid {
        grid-template-columns: 1fr;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .telegraph-controls {
        grid-template-columns: 1fr;
    }
    
    .morse-table {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
}