/* =========================================
   Button Base Styles
   ========================================= */
   .button {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: 1rem;
    padding: 1.25rem;
    height: 80px;
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 200px;
    max-width: 250px;
    box-shadow: var(--shadow-sm);
    font-size: 1rem;
    font-weight: 600;
}

/* Button Container */
.button-container {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 1.5rem auto;
    max-width: 900px;
}

/* =========================================
   Auth Specific Buttons
   ========================================= */
.auth-button {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-bounce);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-size: var(--text-base);
}

.auth-button-primary {
    background: var(--color-primary);
    color: white;
    border: none;
    box-shadow: var(--shadow-md);
}

.auth-button-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.auth-button-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-primary);
}

.auth-button-secondary:hover {
    background: var(--bg-primary);
    border-color: var(--color-primary);
}

/* Auth navigation buttons */
.auth-nav-button {
    padding: var(--space-sm) var(--space-md);
    color: var(--text-secondary);
    background: none;
    border: none;
    font-size: var(--text-sm);
    cursor: pointer;
    transition: var(--transition-base);
}

.auth-nav-button:hover {
    color: var(--text-primary);
}

/* =========================================
   Topic Button
   ========================================= */
.topic-button {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
}

.topic-button:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 20px -8px rgba(37, 99, 235, 0.2);
    border-color: var(--color-primary);
}

.topic-button.active {
    background: var(--bg-secondary);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

/* =========================================
   Start Button
   ========================================= */
.start-button {
    background: var(--color-primary);
    color: white;
    border: none;
}

.start-button:hover {
    background: var(--color-primary-dark);
    transform: translateY(-4px);
    box-shadow: 0 12px 20px -8px rgba(37, 99, 235, 0.4);
}

/* =========================================
   Record Button
   ========================================= */
.record-button {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-base);
    min-width: 150px;
    font-size: var(--text-sm);
}

.record-button:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

.record-button.recording {
    background: var(--color-danger);
    animation: pulse 1.5s infinite;
}

.record-button.disabled {
    background: var(--text-light);
    cursor: not-allowed;
    opacity: 0.7;
}

/* =========================================
   Collapse Button
   ========================================= */
.collapse-button {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    font-size: 1.25rem;
    transition: transform 0.3s ease;
}

.collapse-button:hover {
    color: var(--text-primary);
}

.collapse-button.collapsed {
    transform: rotate(-180deg);
}

/* =========================================
   Level Button
   ========================================= */
.level-button {
    background: var(--bg-primary);
    border: 1px solid var(--border-primary);
    border-radius: 1rem;
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-shadow: var(--shadow-sm);
    width: 100%;
}

.level-button:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 20px -8px rgba(37, 99, 235, 0.2);
    border-color: var(--color-primary);
}

.level-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 500px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.level-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.level-text {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.level-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.level-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.level-info {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    border-top: 1px solid var(--border-primary);
    padding-top: 0.5rem;
    width: 100%;
}

/* =========================================
   Home Button
   ========================================= */
.home-button {
    position: absolute;
    top: 2rem;
    left: 2rem;
}

.home-button a {
    text-decoration: none;
    color: var(--text-primary);
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1px solid var(--border-primary);
    background: var(--bg-primary);
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
}

.home-button a:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px -4px rgba(0, 0, 0, 0.1);
    background: var(--bg-primary);
    border-color: #cbd5e1;
}

.home-button .home-icon {
    width: 22px;
    height: 22px;
    stroke-width: 2.5;
    stroke: currentColor;
    fill: none;
}

/* =========================================
   Modal Button
   ========================================= */
.modal-button {
    background: var(--color-primary);
    color: white;
    padding: var(--space-sm) var(--space-md);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
    font-weight: 500;
}

.modal-button:hover {
    background: var(--color-primary-dark);
}

/* =========================================
   Loading States
   ========================================= */
.button-loading,
.start-button.loading {
    position: relative;
    color: transparent;
}

.button-loading::after,
.start-button.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid white;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 0.8s linear infinite;
}

/* =========================================
   Animations
   ========================================= */
@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* =========================================
   Responsive Adjustments
   ========================================= */
@media (max-width: 768px) {
    .button-container {
        flex-direction: column;
        align-items: center;
    }

    .button {
        width: 100%;
        max-width: 300px;
    }

    .record-button {
        width: 100%;
    }

    .auth-button {
        padding: var(--space-md);
    }
}