:root {
    --primary-color: #ac6c6c;
    --secondary-color: #ff0000;
    --background-color: #1a202c;
    --text-color: #e2e8f0;
    --overlay-bg: rgba(0, 0, 0, 0.5);
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    width: 100vw;
    touch-action: manipulation;
}

#app-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

#video-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scaleX(-1);
}

#overlay-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

#timer-display {
    font-weight: 700;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.7);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    background-color: var(--overlay-bg);
    padding: 1rem 2rem;
    border-radius: 1rem;
    white-space: nowrap;
    text-align: center;
    font-size: 2.5rem; /* Tamaño base para móviles */
}

#status-message {
    position: absolute;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    font-weight: 600;
    color: #a0aec0;
    z-index: 10;
    background-color: var(--overlay-bg);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    text-align: center;
    width: 90%;
    max-width: 500px;
    font-size: 0.9rem;
}

#controls {
    position: absolute;
    bottom: 1rem;
    z-index: 10;
    display: flex;
    gap: 1rem;
    justify-content: center;
    width: 100%;
    padding: 0 1rem;
}

button {
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: 9999px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    background-image: linear-gradient(to right, #4CAF50, #8BC34A);
    color: white;
    border: none;
    flex-grow: 1;
    max-width: 200px;
    font-size: 0.9rem;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 8px rgba(0, 0, 0, 0.2);
    background-image: linear-gradient(to right, #8BC34A, #4CAF50);
}

button:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

#sensitivity-slider-container {
    position: absolute;
    bottom: 5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    background-color: var(--overlay-bg);
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-direction: column;
    width: 80%;
    max-width: 300px;
}

#sensitivity-slider {
    width: 100%;
    -webkit-appearance: none;
    height: 8px;
    border-radius: 5px;
    background: #ffffff;
    outline: none;
    opacity: 0.7;
    transition: opacity .2s;
}

#sensitivity-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--secondary-color);
    cursor: pointer;
}

#sensitivity-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--secondary-color);
    cursor: pointer;
}

.message-box {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 20px;
    border-radius: 10px;
    z-index: 1000;
    text-align: center;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.7);
    display: none;
    width: 80%;
    max-width: 400px;
}

.message-box button {
    margin-top: 15px;
    padding: 10px 20px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    width: auto;
}

#laps-container {
    position: absolute;
    top: 4rem;
    right: 0.5rem;
    z-index: 10;
    background-color: var(--overlay-bg);
    padding: 0.5rem;
    border-radius: 0.5rem;
    max-height: 40%;
    overflow-y: auto;
    color: var(--text-color);
    width: 130px;
    font-size: 0.8rem;
}

#laps-container h3 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-align: center;
}

#laps-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

#laps-list li {
    padding: 0.2rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.75rem;
    display: flex;
    justify-content: space-between;
}

#laps-list li:last-child {
    border-bottom: none;
}

.calibrating-line {
    stroke: yellow;
    animation: pulseYellow 1s infinite alternate;
}

@keyframes pulseYellow {
    from { stroke: rgba(255, 255, 0, 0.5); }
    to { stroke: rgba(255, 255, 0, 1); }
}

.detection-line-flash {
    animation: lineFlash 0.2s ease-out forwards;
}

@keyframes lineFlash {
    from { stroke: rgba(255, 0, 0, 0.7); }
    to { stroke: limegreen; }
}

/* Media queries para diferentes tamaños de pantalla */
@media (min-width: 640px) {
    #timer-display {
        font-size: 3rem;
        padding: 1rem 2rem;
    }
    
    #status-message {
        font-size: 1rem;
        width: auto;
    }
    
    #laps-container {
        width: 150px;
        padding: 0.75rem 1rem;
        right: 1rem;
        top: 6rem;
    }
    
    #laps-container h3 {
        font-size: 1rem;
    }
    
    #laps-list li {
        font-size: 0.8rem;
    }
    
    #sensitivity-slider-container {
        bottom: 6rem;
    }
    
    #controls {
        bottom: 2rem;
    }
}

@media (min-width: 768px) {
    #timer-display {
        font-size: 4rem;
    }
    
    #laps-container {
        width: 180px;
        top: 8rem;
    }
}

@media (max-height: 600px) {
    #timer-display {
        font-size: 2rem;
        padding: 0.5rem 1rem;
    }
    
    #status-message {
        top: 0.5rem;
        font-size: 0.8rem;
        padding: 0.3rem 0.8rem;
    }
    
    #sensitivity-slider-container {
        bottom: 4rem;
        padding: 0.5rem 1rem;
    }
    
    #controls {
        bottom: 0.5rem;
    }
    
    #laps-container {
        top: 3rem;
        max-height: 50%;
    }
}

/* Para orientación landscape en móviles */
@media (max-width: 768px) and (orientation: landscape) {
    #timer-display {
        font-size: 2rem;
        padding: 0.5rem 1rem;
    }
    
    #status-message {
        top: 0.5rem;
        font-size: 0.8rem;
        padding: 0.3rem 0.8rem;
    }
    
    #sensitivity-slider-container {
        bottom: 4rem;
        padding: 0.5rem 1rem;
        flex-direction: row;
        width: 70%;
    }
    
    #controls {
        bottom: 0.5rem;
    }
    
    #laps-container {
        top: 3rem;
        right: 0.5rem;
        max-height: 60%;
        width: 120px;
    }
}