/*
 * Toast notifications
 * Driven by /script/toast.js global Toast API.
 * Tokens consumed from /style/main.css.
 */

.toast-container {
    position: fixed;
    top: calc(var(--header-height, 80px) + var(--space-md));
    right: var(--space-md);
    z-index: var(--z-tooltip, 300);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    pointer-events: none;
    width: min(380px, calc(100vw - var(--space-md) * 2));
}

.toast {
    --toast-accent: var(--accent-blue);
    --toast-accent-bg: rgba(107, 140, 255, 0.12);

    position: relative;
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-areas:
        "icon body close"
        ".    actions actions";
    column-gap: var(--space-md);
    row-gap: var(--space-sm);
    align-items: start;
    padding: var(--space-md);
    border: var(--border-thin) solid var(--border-default);
    border-left: 3px solid var(--toast-accent);
    border-radius: var(--radius-md);
    background: var(--bg-elevated);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    cursor: default;
    transform-origin: top right;
    transition: transform var(--transition-base), opacity var(--transition-base);
    overflow: hidden;
}

.toast::before {
    content: "";
    position: absolute;
    inset: 0;
    background: var(--toast-accent-bg);
    opacity: 0.35;
    pointer-events: none;
    z-index: 0;
}

.toast > * { position: relative; z-index: 1; }

/* Variants */
.toast--success { --toast-accent: var(--accent-green); --toast-accent-bg: rgba(74, 222, 148, 0.12); }
.toast--error   { --toast-accent: var(--accent-red);   --toast-accent-bg: rgba(255, 107, 107, 0.12); }
.toast--warning { --toast-accent: var(--accent-yellow);--toast-accent-bg: rgba(251, 191, 36, 0.12); }
.toast--info    { --toast-accent: var(--accent-blue);  --toast-accent-bg: rgba(107, 140, 255, 0.12); }
.toast--loading { --toast-accent: var(--accent-purple);--toast-accent-bg: rgba(167, 139, 250, 0.12); }

[data-theme="light"] .toast--success { --toast-accent-bg: rgba(16, 185, 129, 0.10); }
[data-theme="light"] .toast--error   { --toast-accent-bg: rgba(239, 68, 68, 0.10); }
[data-theme="light"] .toast--warning { --toast-accent-bg: rgba(245, 158, 11, 0.10); }
[data-theme="light"] .toast--info    { --toast-accent-bg: rgba(59, 130, 246, 0.10); }
[data-theme="light"] .toast--loading { --toast-accent-bg: rgba(139, 92, 246, 0.10); }

/* Icon */
.toast__icon {
    grid-area: icon;
    display: grid;
    place-items: center;
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    background: color-mix(in srgb, var(--toast-accent) 18%, transparent);
    color: var(--toast-accent);
    font-size: 16px;
    flex-shrink: 0;
}

.toast--loading .toast__icon i {
    animation: toast-spin 1s linear infinite;
}

@keyframes toast-spin {
    to { transform: rotate(360deg); }
}

/* Body */
.toast__body {
    grid-area: body;
    min-width: 0;
}

.toast__title {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.35;
    margin: 0;
    word-wrap: break-word;
}

.toast__description {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    color: var(--text-secondary);
    line-height: 1.5;
    margin-top: 2px;
    word-wrap: break-word;
}

/* Close button */
.toast__close {
    grid-area: close;
    appearance: none;
    background: transparent;
    border: 0;
    padding: 0;
    width: 24px;
    height: 24px;
    display: grid;
    place-items: center;
    border-radius: var(--radius-xs);
    color: var(--text-muted);
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
    font-size: 16px;
}

.toast__close:hover {
    background: var(--border-subtle);
    color: var(--text-primary);
}

.toast__close:focus-visible {
    outline: 2px solid var(--toast-accent);
    outline-offset: 1px;
}

/* Actions */
.toast__actions {
    grid-area: actions;
    display: flex;
    gap: var(--space-sm);
    margin-top: 2px;
}

.toast__action {
    appearance: none;
    background: transparent;
    border: var(--border-thin) solid var(--border-default);
    padding: 6px 12px;
    border-radius: var(--radius-xs);
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.toast__action:hover {
    border-color: var(--toast-accent);
    color: var(--toast-accent);
}

.toast__action--primary {
    background: var(--toast-accent);
    border-color: var(--toast-accent);
    color: var(--bg-base);
}

.toast__action--primary:hover {
    filter: brightness(1.08);
    color: var(--bg-base);
}

/* Progress bar (auto-dismiss) */
.toast__progress {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--toast-accent);
    transform-origin: left;
    opacity: 0.5;
    z-index: 1;
    will-change: transform;
}

/* Enter / exit animations */
.toast {
    opacity: 0;
    transform: translateX(calc(100% + var(--space-md)));
}

.toast.is-entering,
.toast.is-visible {
    opacity: 1;
    transform: translateX(0);
}

.toast.is-leaving {
    opacity: 0;
    transform: translateX(calc(100% + var(--space-md))) scale(0.96);
    transition: transform 280ms var(--ease-default), opacity 200ms var(--ease-default);
}

/* Swipe dismiss (touch) */
.toast.is-dragging {
    transition: none;
    cursor: grabbing;
}

/* Mobile : full-width, slide from top */
@media (max-width: 640px) {
    .toast-container {
        top: var(--space-md);
        right: var(--space-md);
        left: var(--space-md);
        width: auto;
    }

    .toast {
        transform: translateY(calc(-100% - var(--space-md)));
        transform-origin: top center;
    }

    .toast.is-entering,
    .toast.is-visible {
        transform: translateY(0);
    }

    .toast.is-leaving {
        transform: translateY(calc(-100% - var(--space-md))) scale(0.96);
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .toast,
    .toast.is-entering,
    .toast.is-visible,
    .toast.is-leaving {
        transform: none;
        transition: opacity 150ms linear;
    }

    .toast__progress { display: none; }

    .toast--loading .toast__icon i {
        animation: none;
    }
}