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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.chat-container {
    width: 100%;
    max-width: 800px;
    height: 90vh;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.chat-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px;
}

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

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

.chat-header h1 {
    font-size: 28px;
    margin-bottom: 5px;
}

.chat-header p {
    font-size: 14px;
    opacity: 0.9;
}

.logout-button {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 14px;
    transition: background 0.3s;
    white-space: nowrap;
}

.logout-button:hover {
    background: rgba(255, 255, 255, 0.3);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background: #f5f5f5;
}

.message {
    margin-bottom: 15px;
    display: flex;
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.user-message {
    justify-content: flex-end;
}

.bot-message {
    justify-content: flex-start;
}

.message-content {
    max-width: 70%;
    padding: 12px 18px;
    border-radius: 18px;
    word-wrap: break-word;
    line-height: 1.5;
}

.user-message .message-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-bottom-right-radius: 4px;
}

.bot-message .message-content {
    background: white;
    color: #333;
    border-bottom-left-radius: 4px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.chat-input-container {
    padding: 20px;
    background: white;
    border-top: 1px solid #e0e0e0;
}

#chatForm {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: nowrap;
}

#userInput {
    flex: 1;
    min-width: 0;
    padding: 14px 18px;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    font-size: 15px;
    outline: none;
    transition: border-color 0.3s;
}

#userInput:focus {
    border-color: #667eea;
}

#sendButton {
    width: 50px;
    height: 50px;
    min-width: 50px;
    min-height: 50px;
    max-width: 50px;
    max-height: 50px;
    border: none;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, box-shadow 0.2s;
    flex-shrink: 0;
    padding: 0;
}

#sendButton svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

#sendButton:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

#sendButton:active {
    transform: scale(0.95);
}

#sendButton:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Botón de grabación */
.record-button {
    width: 50px;
    height: 50px;
    min-width: 50px;
    min-height: 50px;
    max-width: 50px;
    max-height: 50px;
    border: none;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s, box-shadow 0.2s;
    flex-shrink: 0;
    padding: 0;
}

.record-button svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.record-button:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(245, 87, 108, 0.4);
}

.record-button:active {
    transform: scale(0.95);
}

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

/* Estado de grabación */
.recording-status {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 10px;
    padding: 10px;
    background: #fff3cd;
    border-radius: 10px;
    color: #856404;
    font-size: 14px;
}

.recording-dot {
    width: 12px;
    height: 12px;
    background: #dc3545;
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.stop-recording-button {
    margin-left: auto;
    padding: 6px 12px;
    background: #dc3545;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 12px;
    transition: background 0.2s;
}

.stop-recording-button:hover {
    background: #c82333;
}

/* Contenedor de audio en mensajes */
.audio-container {
    margin-top: 10px;
    padding: 8px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 8px;
}

.audio-container audio {
    width: 100%;
    outline: none;
}

.user-message .audio-container {
    background: rgba(255, 255, 255, 0.2);
}

.bot-message .audio-container {
    background: rgba(0, 0, 0, 0.05);
}

/* Botón para detener audio */
.audio-controls {
    display: flex;
    align-items: center;
    gap: 8px;
}

.stop-audio-button {
    width: 28px;
    height: 28px;
    border: none;
    background: #dc3545;
    color: white;
    border-radius: 50%;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: bold;
    transition: background 0.2s, transform 0.2s;
    padding: 0;
    line-height: 1;
}

.stop-audio-button:hover {
    background: #c82333;
    transform: scale(1.1);
}

.stop-audio-button:active {
    transform: scale(0.95);
}

/* Indicador de escritura */
.typing-indicator .typing-dots {
    display: flex;
    gap: 4px;
}

.typing-dots span {
    width: 8px;
    height: 8px;
    background: #999;
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

.typing-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.7;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

/* Cargador en mensajes */
.message-loader {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #666;
    font-size: 14px;
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid #e0e0e0;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Scrollbar personalizada */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* Responsive */
@media (max-width: 600px) {
    .chat-container {
        height: 100vh;
        max-width: 100%;
        border-radius: 0;
    }
    
    .chat-header h1 {
        font-size: 22px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 10px;
    }
    
    .logout-button {
        font-size: 12px;
        padding: 6px 12px;
    }
    
    .message-content {
        max-width: 85%;
    }
    
    /* Mantener mismo tamaño para ambos botones en mobile */
    .record-button,
    #sendButton {
        width: 48px;
        height: 48px;
        min-width: 48px;
        min-height: 48px;
        max-width: 48px;
        max-height: 48px;
    }
    
    .record-button svg,
    #sendButton svg {
        width: 22px;
        height: 22px;
    }
    
    .recording-status {
        font-size: 12px;
        padding: 8px;
    }
    
    #chatForm {
        gap: 8px;
    }
    
    #userInput {
        padding: 12px 16px;
        font-size: 14px;
    }
}