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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
}

header {
    background: #2c3e50;
    color: white;
    padding: 30px;
    text-align: center;
}

header h1 {
    margin-bottom: 10px;
    font-size: 2.2em;
}

header p {
    opacity: 0.8;
    font-size: 1.1em;
}

.connection-panel {
    padding: 25px;
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

.status {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: 600;
}

.status.connected {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.status.disconnected {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

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

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: #007bff;
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: #0056b3;
    transform: translateY(-2px);
}

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

.btn-secondary:hover:not(:disabled) {
    background: #545b62;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.btn-small {
    padding: 8px 16px;
    font-size: 12px;
}

.select {
    padding: 12px;
    border: 1px solid #ced4da;
    border-radius: 6px;
    background: white;
    font-size: 14px;
}

.terminal-container {
    margin: 0 25px 25px;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    overflow: hidden;
    min-height: 500px;
}

.terminal-header {
    background: #495057;
    color: white;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
}

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

.terminal-header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.terminal {
    height: 500px;
    background: #1a1a1a;
    color: #87ceeb;
    padding: 25px;
    font-family: 'Courier New', monospace;
    font-size: 15px;
    line-height: 1.6;
    overflow-y: auto;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.terminal-line {
    display: block;
    min-height: 1.6em;
    white-space: pre;
    font-family: 'Courier New', monospace;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    font-size: 15px;
    color: #87ceeb;
}

.terminal pre {
    margin: 0;
    padding: 0;
    font-family: 'Courier New', monospace;
    white-space: pre;
    display: block;
    line-height: 1.6;
    color: #87ceeb;
}

.input-container {
    display: flex;
    gap: 15px;
    padding: 0 25px 25px;
    align-items: stretch;
}

#commandInput {
    flex: 1;
    padding: 15px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 16px;
    font-family: 'Courier New', monospace;
    transition: border-color 0.3s ease;
    min-height: 50px;
    resize: vertical;
}

#commandInput:focus {
    outline: none;
    border-color: #007bff;
}

#commandInput:disabled {
    background: #f8f9fa;
    cursor: not-allowed;
}

.help-section {
    padding: 0 25px 25px;
}

details {
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 15px;
    background: #f8f9fa;
}

summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 16px;
}

details ol {
    margin: 15px 0 0 20px;
}

details li {
    margin-bottom: 8px;
    line-height: 1.5;
}

.terminal::-webkit-scrollbar {
    width: 12px;
}

.terminal::-webkit-scrollbar-track {
    background: #2d2d2d;
}

.terminal::-webkit-scrollbar-thumb {
    background: #555;
    border-radius: 6px;
    border: 2px solid #2d2d2d;
}

.terminal::-webkit-scrollbar-thumb:hover {
    background: #777;
}

.terminal::-webkit-scrollbar:horizontal {
    height: 12px;
}

@media (min-width: 1400px) {
    .container {
        max-width: 1400px;
    }
    
    .terminal {
        height: 600px;
        font-size: 16px;
        padding: 30px;
    }
}

@media (max-width: 768px) {
    .container {
        margin: 10px;
        border-radius: 10px;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .input-container {
        flex-direction: column;
    }
    
    .terminal-header {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .terminal-header-left, 
    .terminal-header-right {
        width: 100%;
        justify-content: space-between;
    }
    
    .terminal {
        height: 400px;
        font-size: 14px;
        padding: 15px;
    }
    
    #commandInput {
        min-height: 60px;
    }
}

.terminal {
    scroll-behavior: smooth;
}

.btn:focus, #commandInput:focus, .select:focus {
    outline: 2px solid #007bff;
    outline-offset: 2px;
}

.footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 20px;
    font-size: 14px;
    border-top: 3px solid rgba(255, 255, 255, 0.2);
    margin-top: 20px;
}

.footer a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}

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

/* Estilos para el campo de baudrate personalizado */
#customBaudrate {
    transition: border-color 0.3s ease;
}

#customBaudrate:focus {
    outline: none;
    border-color: #007bff;
}

.baudrate-container {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

/* Responsive para baudrates */
@media (max-width: 768px) {
    .baudrate-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    #baudrate, #customBaudrate {
        width: 100%;
    }
}

/* Mensajes de validación */
.validation-success {
    border-color: #51cf66 !important;
}

.validation-warning {
    border-color: #ffa500 !important;
}

.validation-error {
    border-color: #ff6b6b !important;
}