.breathing-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    color: #374151;
    text-align: center;
    padding: 0 1rem;
}

.breathing-circle-container {
    position: relative;
    width: 260px;
    height: 260px;
    margin: 1.5rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Base circle for the gradient background */
.breathing-circle {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    /* Contrast Gradient: Deep Purple to Vibrant Pink/Orange */
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #ff758c 100%);
    box-shadow: 0 10px 30px rgba(118, 75, 162, 0.4);
    transform: scale(0.6);
    z-index: 1;
    transition: transform 0.3s ease;
}

/* Outer glow effect */
.breathing-circle-glow {
    position: absolute;
    top: -10%;
    left: -10%;
    width: 120%;
    height: 120%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.2) 0%, transparent 70%);
    z-index: 0;
    transform: scale(0.6);
}

.circle-content {
    position: absolute;
    z-index: 10;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    width: 100%;
    height: 100%;
}

.breathing-instruction {
    font-size: 2.2rem;
    font-weight: 700;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.breathing-timer {
    font-size: 3.5rem;
    font-weight: 300;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    font-variant-numeric: tabular-nums;
}

.controls {
    display: flex;
    gap: 0.8rem;
    margin-top: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    z-index: 20;
}

.technique-selector {
    background: #f3f4f6;
    border: 2px solid #e5e7eb;
    color: #1f2937;
    padding: 0.8rem 1.5rem;
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    cursor: pointer;
    min-width: 220px;
    transition: border-color 0.2s;
}

.technique-selector:focus {
    border-color: #764ba2;
    outline: none;
}

.btn-start {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    padding: 0.8rem 2.5rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
    transition: transform 0.2s, box-shadow 0.2s, filter 0.2s;
}

.btn-start:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
    box-shadow: 0 6px 15px rgba(16, 185, 129, 0.4);
}

.btn-start:active {
    transform: scale(0.98);
}

.btn-start.active {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* Animation Classes */
/* We will use CSS variables or JS to control duration, but let's keep base animations */

.inhale .breathing-circle,
.inhale .breathing-circle-glow {
    animation-name: grow;
    animation-timing-function: ease-in-out;
    animation-fill-mode: forwards;
    animation-duration: var(--duration, 4s);
}

.hold .breathing-circle {
    animation-name: pulse-hold;
    animation-timing-function: ease-in-out;
    animation-iteration-count: infinite;
    animation-duration: var(--duration, 4s);
}

.hold .breathing-circle-glow {
    animation-name: grow;
    /* Keep expanded */
    animation-fill-mode: forwards;
    animation-duration: 0s;
    /* Instant */
}


.exhale .breathing-circle,
.exhale .breathing-circle-glow {
    animation-name: shrink;
    animation-timing-function: ease-in-out;
    animation-fill-mode: forwards;
    animation-duration: var(--duration, 4s);
}

@keyframes grow {
    from {
        transform: scale(0.6);
    }

    to {
        transform: scale(1.1);
    }
}

@keyframes shrink {
    from {
        transform: scale(1.1);
    }

    to {
        transform: scale(0.6);
    }
}

@keyframes pulse-hold {
    0% {
        transform: scale(1.1);
        box-shadow: 0 10px 30px rgba(118, 75, 162, 0.4);
    }

    50% {
        transform: scale(1.05);
        box-shadow: 0 10px 50px rgba(118, 75, 162, 0.6);
    }

    100% {
        transform: scale(1.1);
        box-shadow: 0 10px 30px rgba(118, 75, 162, 0.4);
    }
}