/* ========================================
   Toast Notification System
   ======================================== */

.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: var(--z-index-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    pointer-events: none;
}

.toast {
    background: var(--color-surface);
    padding: var(--spacing-base) var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 300px;
    max-width: 400px;
    pointer-events: auto;
    animation: slideInRight 0.3s var(--transition-timing);
    border-left: 4px solid var(--color-neutral-300);
}

.toast.toast-success {
    border-left-color: var(--color-success);
}

.toast.toast-error {
    border-left-color: var(--color-error);
}

.toast.toast-warning {
    border-left-color: var(--color-warning);
}

.toast.toast-info {
    border-left-color: var(--color-primary);
}

.toast-icon {
    font-size: var(--font-size-2xl);
    flex-shrink: 0;
}

.toast-success .toast-icon {
    color: var(--color-success);
}

.toast-error .toast-icon {
    color: var(--color-error);
}

.toast-warning .toast-icon {
    color: var(--color-warning);
}

.toast-info .toast-icon {
    color: var(--color-primary);
}

.toast-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.toast-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

.toast-message {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
}

.toast-close {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    font-size: var(--font-size-xl);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast) var(--transition-timing),
                color var(--transition-fast) var(--transition-timing);
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.toast-close:hover {
    background: var(--color-neutral-100);
    color: var(--color-text-primary);
}

.toast.fade-out {
    animation: fadeOut 0.3s var(--transition-timing) forwards;
}

/* Progress bar */
.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: var(--color-neutral-300);
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    animation: progress 3s linear forwards;
}

.toast-success .toast-progress {
    background: var(--color-success);
}

.toast-error .toast-progress {
    background: var(--color-error);
}

.toast-warning .toast-progress {
    background: var(--color-warning);
}

.toast-info .toast-progress {
    background: var(--color-primary);
}

/* Animations */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

@keyframes progress {
    from {
        width: 100%;
    }
    to {
        width: 0%;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .toast-container {
        top: var(--spacing-md);
        right: var(--spacing-md);
        left: var(--spacing-md);
    }
    
    .toast {
        min-width: auto;
        max-width: 100%;
    }
}