/* ==========================================================================
   forum-components.css — библиотека UI-компонентов движка Black Bonus.
   Подключается ПОСЛЕ forum-tokens.css и ДО forum-shell.css / page-*.css.
   Все компоненты используют токены из forum-tokens.css.
   Это позволяет добавлять новые страницы без копирования стилей.
   ========================================================================== */

/* ==========================================================================
   1. BASE / RESET (минимальный, не ломает существующие стили)
   ========================================================================== */
.forum-ui,
.forum-ui * {
    box-sizing: border-box;
}

.forum-ui {
    font-family: var(--font-sans);
    font-size: var(--fs-base);
    line-height: var(--lh-base);
    color: var(--text-primary);
    background: var(--bg-primary);
}

/* ==========================================================================
   2. BUTTONS — .btn + модификаторы
   ========================================================================== */
.btn,
.forum-ui .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 10px var(--space-5);
    font-family: inherit;
    font-size: var(--fs-sm);
    font-weight: 600;
    line-height: 1.2;
    text-decoration: none;
    white-space: nowrap;
    cursor: pointer;
    user-select: none;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transition: transform var(--dur-fast) var(--ease-out),
                background var(--dur-fast) var(--ease-out),
                border-color var(--dur-fast) var(--ease-out),
                box-shadow var(--dur-fast) var(--ease-out),
                opacity var(--dur-fast) var(--ease-out);
    -webkit-tap-highlight-color: transparent;
}

.btn:hover,
.forum-ui .btn:hover {
    transform: translateY(-1px);
    background: var(--hover-color);
}

.btn:active,
.forum-ui .btn:active {
    transform: translateY(0);
}

.btn:focus-visible,
.forum-ui .btn:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.btn:disabled,
.btn.is-disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

.btn .fa, .btn i { font-size: 1em; }

.btn-primary,
.forum-ui .btn-primary {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    color: var(--accent-contrast);
    box-shadow: var(--shadow-sm);
}
.btn-primary:hover,
.forum-ui .btn-primary:hover {
    box-shadow: var(--shadow-md), var(--shadow-glow);
    background: linear-gradient(135deg, var(--accent-hover), var(--accent-color));
}

.btn-secondary,
.forum-ui .btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--border-color);
}
.btn-secondary:hover { background: var(--hover-color); }

.btn-success { background: var(--success-color); color: #fff; }
.btn-success:hover { background: #218838; box-shadow: var(--shadow-md); }

.btn-danger { background: var(--danger-color); color: #fff; }
.btn-danger:hover { background: #d43f30; box-shadow: var(--shadow-md); }

.btn-warning { background: var(--warning-color); color: #fff; }
.btn-info { background: var(--info-color); color: #fff; }

.btn-ghost,
.forum-ui .btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}
.btn-ghost:hover { background: var(--hover-soft); color: var(--text-primary); }

.btn-outline {
    background: transparent;
    color: var(--accent-color);
    border-color: var(--accent-color);
}
.btn-outline:hover { background: var(--accent-soft); }

.btn-sm, .btn-small { padding: 6px var(--space-3); font-size: var(--fs-xs); border-radius: var(--radius-sm); }
.btn-lg { padding: 14px var(--space-6); font-size: var(--fs-md); border-radius: var(--radius-lg); }
.btn-block { display: flex; width: 100%; }
.btn-icon { padding: 8px; width: 36px; height: 36px; }

/* ==========================================================================
   3. CARDS — .card / .card-header / .card-body / .card-footer
   ========================================================================== */
.card,
.forum-ui .card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: transform var(--dur-base) var(--ease-out),
                box-shadow var(--dur-base) var(--ease-out),
                border-color var(--dur-base) var(--ease-out);
}

.card.is-clickable:hover,
.forum-ui .card.is-clickable:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-color);
}

.card-header,
.forum-ui .card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.card-title {
    margin: 0;
    font-size: var(--fs-md);
    font-weight: 700;
    color: var(--text-primary);
}

.card-body,
.forum-ui .card-body { padding: var(--space-5); }

.card-footer {
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

/* ==========================================================================
   4. INPUTS / FORMS
   ========================================================================== */
.form-group,
.forum-ui .form-group {
    margin-bottom: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-label,
.forum-ui .form-label {
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--text-secondary);
}

.form-control,
.forum-ui .form-control,
.forum-ui input[type="text"],
.forum-ui input[type="email"],
.forum-ui input[type="password"],
.forum-ui input[type="search"],
.forum-ui input[type="url"],
.forum-ui input[type="number"],
.forum-ui select,
.forum-ui textarea {
    width: 100%;
    padding: 10px var(--space-4);
    font-family: inherit;
    font-size: var(--fs-base);
    color: var(--text-primary);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color var(--dur-fast) var(--ease-out),
                box-shadow var(--dur-fast) var(--ease-out);
}

.form-control::placeholder,
.forum-ui input::placeholder,
.forum-ui textarea::placeholder { color: var(--text-muted); }

.form-control:focus,
.forum-ui input:focus,
.forum-ui select:focus,
.forum-ui textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

textarea.form-control { min-height: 120px; resize: vertical; }

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23828b9a' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-4) center;
    padding-right: var(--space-7);
}

.form-hint { font-size: var(--fs-xs); color: var(--text-muted); }
.form-error { font-size: var(--fs-xs); color: var(--danger-color); }

/* ==========================================================================
   5. BADGES / CHIPS
   ========================================================================== */
.badge,
.forum-ui .badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px var(--space-2);
    font-size: var(--fs-xs);
    font-weight: 600;
    border-radius: var(--radius-pill);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    line-height: 1.5;
}

.badge-accent { background: var(--accent-soft); color: var(--accent-color); }
.badge-success { background: var(--success-soft); color: var(--success-color); }
.badge-danger { background: var(--danger-soft); color: var(--danger-color); }
.badge-warning { background: var(--warning-soft); color: var(--warning-color); }
.badge-info { background: var(--info-soft); color: var(--info-color); }

.badge-dot {
    width: 8px; height: 8px; padding: 0;
    border-radius: 50%;
    background: var(--text-muted);
}
.badge-dot.online { background: var(--online-color); box-shadow: 0 0 8px var(--online-color); }

/* ==========================================================================
   6. AVATARS
   ========================================================================== */
.avatar,
.forum-ui .avatar {
    display: inline-block;
    border-radius: 50%;
    object-fit: cover;
    background: var(--bg-tertiary);
    flex-shrink: 0;
}
.avatar-sm { width: 28px; height: 28px; }
.avatar-md { width: 42px; height: 42px; }
.avatar-lg { width: 72px; height: 72px; }
.avatar-xl { width: 120px; height: 120px; }

.avatar-wrap { position: relative; display: inline-block; }
.avatar-status {
    position: absolute;
    bottom: 0; right: 0;
    width: 12px; height: 12px;
    border-radius: 50%;
    border: 2px solid var(--bg-secondary);
    background: var(--text-muted);
}
.avatar-status.online { background: var(--online-color); }

/* ==========================================================================
   7. MODALS — .modal / .modal-dialog / .modal-backdrop (JS управляет .is-open)
   ========================================================================== */
.modal,
.forum-ui .modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dur-base) var(--ease-out),
                visibility var(--dur-base) var(--ease-out);
}
.modal.is-open { opacity: 1; visibility: visible; }

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal-dialog {
    position: relative;
    width: 100%;
    max-width: 540px;
    max-height: calc(100vh - var(--space-8));
    overflow: auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(16px) scale(0.97);
    transition: transform var(--dur-slow) var(--ease-spring);
}
.modal.is-open .modal-dialog { transform: translateY(0) scale(1); }

.modal-dialog.modal-lg { max-width: 800px; }
.modal-dialog.modal-sm { max-width: 380px; }

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-color);
}
.modal-title { margin: 0; font-size: var(--fs-lg); font-weight: 700; }
.modal-close {
    background: none; border: none;
    color: var(--text-muted);
    font-size: 20px; cursor: pointer;
    width: 32px; height: 32px;
    border-radius: var(--radius-sm);
    transition: background var(--dur-fast), color var(--dur-fast);
}
.modal-close:hover { background: var(--hover-soft); color: var(--text-primary); }
.modal-body { padding: var(--space-5); }
.modal-footer {
    display: flex; gap: var(--space-3); justify-content: flex-end;
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--border-color);
}

/* ==========================================================================
   8. TOAST — единая система (управляется forum-shell.js)
   ========================================================================== */
.forum-toast-stack {
    position: fixed;
    top: var(--space-5);
    right: var(--space-5);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    pointer-events: none;
    max-width: min(380px, calc(100vw - var(--space-8)));
}

.forum-toast {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    color: var(--text-primary);
    pointer-events: auto;
    opacity: 0;
    transform: translateX(120%);
    transition: opacity var(--dur-base) var(--ease-out),
                transform var(--dur-base) var(--ease-spring);
}
.forum-toast.is-visible { opacity: 1; transform: translateX(0); }
.forum-toast.is-leaving { opacity: 0; transform: translateX(120%); }

.forum-toast.is-success { border-left-color: var(--success-color); }
.forum-toast.is-error { border-left-color: var(--danger-color); }
.forum-toast.is-warning { border-left-color: var(--warning-color); }
.forum-toast.is-info { border-left-color: var(--info-color); }

.forum-toast-icon { font-size: 18px; margin-top: 1px; color: var(--accent-color); }
.forum-toast.is-success .forum-toast-icon { color: var(--success-color); }
.forum-toast.is-error .forum-toast-icon { color: var(--danger-color); }
.forum-toast.is-warning .forum-toast-icon { color: var(--warning-color); }
.forum-toast.is-info .forum-toast-icon { color: var(--info-color); }

.forum-toast-body { flex: 1; min-width: 0; }
.forum-toast-title { font-weight: 700; font-size: var(--fs-sm); margin-bottom: 2px; }
.forum-toast-message { font-size: var(--fs-sm); color: var(--text-secondary); word-wrap: break-word; }
.forum-toast-close {
    background: none; border: none; cursor: pointer;
    color: var(--text-muted); padding: 0; font-size: 16px;
}
.forum-toast-close:hover { color: var(--text-primary); }

/* ==========================================================================
   9. SKELETON LOADERS
   ========================================================================== */
.skeleton,
.forum-ui .skeleton {
    display: block;
    background: var(--skeleton-base);
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
}
.skeleton::after {
    content: '';
    position: absolute;
    inset: 0;
    transform: translateX(-100%);
    background: linear-gradient(90deg, transparent, var(--skeleton-shine), transparent);
    animation: forumSkeletonShine 1.4s var(--ease-in-out) infinite;
}
.skeleton-line { height: 14px; margin-bottom: var(--space-2); }
.skeleton-line:last-child { margin-bottom: 0; }
.skeleton-line.w-60 { width: 60%; }
.skeleton-line.w-40 { width: 40%; }
.skeleton-line.w-80 { width: 80%; }
.skeleton-avatar { width: 42px; height: 42px; border-radius: 50%; }
.skeleton-card { height: 96px; border-radius: var(--radius-md); }

@keyframes forumSkeletonShine {
    100% { transform: translateX(100%); }
}

/* ==========================================================================
   10. REVEAL ON SCROLL — .forum-reveal (IntersectionObserver в shell.js)
   ========================================================================== */
.forum-reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity var(--dur-slow) var(--ease-out),
                transform var(--dur-slow) var(--ease-out);
    will-change: opacity, transform;
}
.forum-reveal.is-revealed { opacity: 1; transform: none; }

.forum-reveal-stagger > * {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity var(--dur-base) var(--ease-out),
                transform var(--dur-base) var(--ease-out);
}
.forum-reveal-stagger.is-revealed > * { opacity: 1; transform: none; }
.forum-reveal-stagger.is-revealed > *:nth-child(1) { transition-delay: 0.04s; }
.forum-reveal-stagger.is-revealed > *:nth-child(2) { transition-delay: 0.08s; }
.forum-reveal-stagger.is-revealed > *:nth-child(3) { transition-delay: 0.12s; }
.forum-reveal-stagger.is-revealed > *:nth-child(4) { transition-delay: 0.16s; }
.forum-reveal-stagger.is-revealed > *:nth-child(5) { transition-delay: 0.20s; }
.forum-reveal-stagger.is-revealed > *:nth-child(6) { transition-delay: 0.24s; }
.forum-reveal-stagger.is-revealed > *:nth-child(7) { transition-delay: 0.28s; }
.forum-reveal-stagger.is-revealed > *:nth-child(8) { transition-delay: 0.32s; }

/* ==========================================================================
   11. BREADCRUMBS (SEO + UX)
   ========================================================================== */
.breadcrumbs,
.forum-ui .breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) 0;
    font-size: var(--fs-sm);
    color: var(--text-muted);
    list-style: none;
    margin: 0;
}
.breadcrumbs li { display: flex; align-items: center; gap: var(--space-2); }
.breadcrumbs li:not(:last-child)::after {
    content: '/';
    color: var(--text-muted);
    opacity: 0.5;
}
.breadcrumbs a { color: var(--text-secondary); text-decoration: none; transition: color var(--dur-fast); }
.breadcrumbs a:hover { color: var(--accent-color); }
.breadcrumbs [aria-current="page"] { color: var(--text-primary); font-weight: 600; }

/* ==========================================================================
   12. UTILITY HELPERS (freq. used, чтобы не дублировать в page CSS)
   ========================================================================== */
.stack { display: flex; flex-direction: column; gap: var(--space-3); }
.stack-sm { gap: var(--space-2); }
.stack-lg { gap: var(--space-5); }
.row { display: flex; gap: var(--space-3); align-items: center; }
.row-wrap { flex-wrap: wrap; }
.row-between { justify-content: space-between; }
.row-end { justify-content: flex-end; }
.grow { flex: 1; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-accent { color: var(--accent-color); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-sm { font-size: var(--fs-sm); }
.text-xs { font-size: var(--fs-xs); }
.text-bold { font-weight: 700; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.clamp-3 { -webkit-line-clamp: 3; }
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; }
.mt-2 { margin-top: var(--space-2); } .mt-4 { margin-top: var(--space-4); }
.mb-2 { margin-bottom: var(--space-2); } .mb-4 { margin-bottom: var(--space-4); }
.hidden { display: none !important; }
.sr-only {
    position: absolute; width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ==========================================================================
   13. SMOOTH SCROLL & FOCUS RING (глобально мягко)
   ========================================================================== */
html { scroll-behavior: smooth; }
:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
    border-radius: var(--radius-xs);
}

/* Скроллбар в стиле движка */
.forum-ui ::-webkit-scrollbar,
.forum-shell-scrollable::-webkit-scrollbar { width: 10px; height: 10px; }
.forum-ui ::-webkit-scrollbar-track,
.forum-shell-scrollable::-webkit-scrollbar-track { background: transparent; }
.forum-ui ::-webkit-scrollbar-thumb,
.forum-shell-scrollable::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-pill);
    border: 2px solid var(--bg-secondary);
}
.forum-ui ::-webkit-scrollbar-thumb:hover,
.forum-shell-scrollable::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ==========================================================================
   14. VIEW TRANSITIONS (плавная навигация без SPA)
   ========================================================================== */
::view-transition-old(root),
::view-transition-new(root) {
    animation-duration: var(--dur-page);
    animation-timing-function: var(--ease-out);
}
::view-transition-old(root) { animation-name: forum-vt-out; }
::view-transition-new(root) { animation-name: forum-vt-in; }

@keyframes forum-vt-out {
    to { opacity: 0; transform: translateY(-8px) scale(0.99); }
}
@keyframes forum-vt-in {
    from { opacity: 0; transform: translateY(12px) scale(0.99); }
    to { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
    ::view-transition-old(root),
    ::view-transition-new(root) { animation: none; }
}