/* --- Shared feedback blocks (loading / empty / error) --- */

/* Global top alerts (toast-style). Fixed under the navbar.
   Host must NOT use overflow:hidden — that clips the rounded shadow into
   square corners behind the card. */
.app-alert-host {
    position: fixed;
    top: calc(var(--navbar-height) + 12px);
    left: 50%;
    z-index: 1200;
    display: flex;
    width: min(480px, calc(100vw - 32px));
    flex-direction: column;
    gap: 10px;
    overflow: visible;
    pointer-events: none;
    transform: translateX(-50%);
}

.app-alert {
    --app-alert-exit-ms: 240ms;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
    border: 0;
    border-radius: 12px;
    /* Opaque elevated surface; tint is applied per kind below.
       No hard border — soft shadow separates the card from the page. */
    background: var(--bg-primary);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.34);
    color: var(--text-primary);
    overflow: hidden;
    pointer-events: auto;
    transform: translateY(0);
    opacity: 1;
    animation: app-alert-in 280ms cubic-bezier(0.22, 1, 0.36, 1) both;
    will-change: transform, opacity;
}

.app-alert.leaving {
    animation: app-alert-out var(--app-alert-exit-ms) cubic-bezier(0.4, 0, 1, 1) forwards;
    pointer-events: none;
}

@keyframes app-alert-in {
    from {
        opacity: 0;
        transform: translateY(-18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes app-alert-out {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-18px);
    }
}

@media (prefers-reduced-motion: reduce) {
    .app-alert,
    .app-alert.leaving {
        animation-duration: 1ms;
    }
}

.app-alert-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    border-radius: 50%;
    font-size: 12px;
    font-weight: 800;
    line-height: 1;
}

.app-alert-message {
    flex: 1;
    min-width: 0;
    margin: 0;
    padding-top: 1px;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.45;
    overflow-wrap: anywhere;
}

.app-alert-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    margin: -2px -4px 0 0;
    border: 0;
    border-radius: 8px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
}

.app-alert-close:hover {
    background: color-mix(in srgb, var(--text-primary) 10%, transparent);
    color: var(--text-primary);
}

/* Kind tints only — no stroke. Icon + soft fill carry the meaning. */
.app-alert-success {
    background: color-mix(in srgb, var(--success) 18%, var(--bg-primary));
    box-shadow: 0 12px 30px color-mix(in srgb, var(--success) 14%, rgba(0, 0, 0, 0.28));
}

.app-alert-success .app-alert-icon {
    background: color-mix(in srgb, var(--success) 28%, transparent);
    color: var(--success);
}

.app-alert-error {
    background: color-mix(in srgb, var(--danger) 20%, var(--bg-primary));
    box-shadow: 0 12px 30px color-mix(in srgb, var(--danger) 14%, rgba(0, 0, 0, 0.28));
}

.app-alert-error .app-alert-icon {
    background: color-mix(in srgb, var(--danger) 28%, transparent);
    color: #f87171;
}

.app-alert-warning {
    background: color-mix(in srgb, var(--warning) 18%, var(--bg-primary));
    box-shadow: 0 12px 30px color-mix(in srgb, var(--warning) 14%, rgba(0, 0, 0, 0.28));
}

.app-alert-warning .app-alert-icon {
    background: color-mix(in srgb, var(--warning) 28%, transparent);
    color: var(--warning);
}

.app-alert-info {
    background: color-mix(in srgb, var(--accent) 16%, var(--bg-primary));
    box-shadow: 0 12px 30px color-mix(in srgb, var(--accent) 12%, rgba(0, 0, 0, 0.28));
}

.app-alert-info .app-alert-icon {
    background: color-mix(in srgb, var(--accent) 26%, transparent);
    color: #60a5fa;
}

[data-theme="light"] .app-alert {
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.12);
}

[data-theme="light"] .app-alert-success {
    background: color-mix(in srgb, var(--success) 12%, #ffffff);
    box-shadow: 0 10px 24px color-mix(in srgb, var(--success) 10%, rgba(15, 23, 42, 0.1));
}

[data-theme="light"] .app-alert-error {
    background: color-mix(in srgb, var(--danger) 12%, #ffffff);
    box-shadow: 0 10px 24px color-mix(in srgb, var(--danger) 10%, rgba(15, 23, 42, 0.1));
}

[data-theme="light"] .app-alert-error .app-alert-icon {
    color: var(--danger);
}

[data-theme="light"] .app-alert-warning {
    background: color-mix(in srgb, var(--warning) 12%, #ffffff);
}

[data-theme="light"] .app-alert-info {
    background: color-mix(in srgb, var(--accent) 10%, #ffffff);
    box-shadow: 0 10px 24px color-mix(in srgb, var(--accent) 8%, rgba(15, 23, 42, 0.1));
}

[data-theme="light"] .app-alert-info .app-alert-icon {
    color: var(--accent);
}

.feedback-block {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 24px;
    color: var(--text-muted);
    background: transparent;
    border: none;
    border-radius: 8px;
}

.feedback-block.compact {
    min-height: 92px;
    padding: 18px;
    background: var(--bg-secondary);
    border: 1px dashed var(--border);
}

.feedback-block-message {
    font-size: 0.95rem;
    line-height: 1.4;
}

.feedback-loading {
    color: var(--text-muted);
}

.feedback-empty {
    color: var(--text-muted);
}

.feedback-error {
    color: var(--danger);
    background: color-mix(in srgb, var(--danger) 8%, transparent);
    border: 1px solid color-mix(in srgb, var(--danger) 28%, transparent);
    padding: 16px 20px;
}

/* Keep legacy class names used by settings pages as aliases. */
.settings-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 24px;
    color: var(--text-muted);
}

/* --- Phase 5.3: visible focus when outline is suppressed ---
   Prefer a shared ring over bare outline:none with no replacement. */
.form-input:focus-visible,
.form-textarea:focus-visible,
.settings-input:focus-visible,
.login-input:focus-visible,
.chat-input:focus-visible,
.domain-add-input:focus-visible,
.search-input:focus-visible,
.invite-input:focus-visible {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.modal-close:focus-visible,
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.btn-ghost:focus-visible,
.btn-danger:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Dialog shell: allow Esc when focused without a mouse target. */
.modal-card[role="dialog"],
.config-drawer[role="dialog"],
.search-modal[role="dialog"] {
    outline: none;
}

.modal-card[role="dialog"]:focus-visible,
.config-drawer[role="dialog"]:focus-visible {
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 35%, transparent);
}