/* ============================================================
   POSTERX · COMPONENTS
   Переиспользуемые компоненты: карточки, badges, avatars,
   empty-state, loading, toast, accordion, modal, switch,
   dropdown, tooltip, skeleton.
   ============================================================ */

/* ============================================================
   КАРТОЧКИ
   ============================================================ */

.card {
    padding: var(--space-5);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-surface);
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-fast),
        box-shadow var(--transition-fast);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-accent {
    border-color: var(--accent);
    background: linear-gradient(135deg, var(--bg-surface), var(--accent-soft));
}

.card-flat {
    box-shadow: none;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.card-title {
    color: var(--text);
    font-size: var(--fs-md);
    font-weight: var(--fw-bold);
}

.card-link {
    color: var(--accent);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.card-link:hover {
    color: var(--accent-hover);
}

.card-header-right {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* ============================================================
   BADGES
   ============================================================ */

.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;

    padding: 3px 9px;

    border-radius: var(--radius-full);

    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    white-space: nowrap;
}

.badge-success { background: var(--success-soft); color: var(--success); }
.badge-danger  { background: var(--danger-soft);  color: var(--danger); }
.badge-warning { background: var(--warning-soft); color: var(--warning); }
.badge-info    { background: var(--info-soft);    color: var(--info); }
.badge-muted   { background: var(--bg-surface-2); color: var(--text-secondary); }
.badge-accent  { background: var(--accent-soft);  color: var(--accent); }

.badge-count {
    padding: 2px 9px;
    border-radius: var(--radius-full);
    background: var(--bg-surface-2);
    color: var(--text-secondary);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    font-variant-numeric: tabular-nums;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

/* ============================================================
   AVATARS
   ============================================================ */

.avatar-xs {
    width: 24px;
    height: 24px;
    flex: 0 0 24px;
    font-size: 10px;
}

.avatar-sm {
    width: 32px;
    height: 32px;
    flex: 0 0 32px;
    font-size: var(--fs-sm);
}

.avatar-md {
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    font-size: var(--fs-md);
}

.avatar-lg {
    width: 64px;
    height: 64px;
    flex: 0 0 64px;
    font-size: var(--fs-xl);
}

.avatar-xl {
    width: 80px;
    height: 80px;
    flex: 0 0 80px;
    font-size: var(--fs-2xl);
}

.avatar-image {
    display: grid;
    place-items: center;
    overflow: hidden;
    border-radius: 50%;
    background: var(--bg-surface-2);
    color: var(--text-secondary);
    font-weight: var(--fw-bold);
}

.avatar-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
}

.avatar-group {
    display: inline-flex;
}

.avatar-group > * + * {
    margin-left: -8px;
    border: 2px solid var(--bg-surface);
}

/* ============================================================
   EMPTY STATE
   ============================================================ */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    min-height: 200px;
    padding: var(--space-6);

    text-align: center;
    color: var(--text-secondary);
}

.empty-icon {
    display: grid;
    place-items: center;

    width: 48px;
    height: 48px;

    margin-bottom: var(--space-3);

    border-radius: var(--radius-md);

    background: var(--accent-soft);
    color: var(--accent);
}

.empty-state strong {
    color: var(--text);
    font-size: var(--fs-md);
    font-weight: var(--fw-semibold);
}

.empty-state p {
    max-width: 380px;
    margin: var(--space-2) 0 var(--space-3);
    color: var(--text-secondary);
    font-size: var(--fs-sm);
    line-height: var(--lh-normal);
}

.empty-state .button {
    margin-top: var(--space-2);
}

/* ============================================================
   LOADING / SPINNER / SKELETON
   ============================================================ */

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-5);
    color: var(--text-secondary);
    font-size: var(--fs-sm);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: px-spin 0.7s linear infinite;
}

.spinner-lg {
    width: 32px;
    height: 32px;
    border-width: 3px;
}

.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);

    background: var(--bg-overlay);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);

    animation: px-fade-in var(--transition) ease;
}

.loading-overlay[hidden] {
    display: none !important;
}

.loading-overlay .loading-text {
    color: var(--text);
    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
}

/* Skeleton */

.skeleton {
    display: block;
    border-radius: var(--radius-xs);
    background: linear-gradient(
        90deg,
        var(--bg-surface-2) 0%,
        var(--bg-surface-hover) 50%,
        var(--bg-surface-2) 100%
    );
    background-size: 200% 100%;
    animation: px-skeleton 1.4s ease-in-out infinite;
}

.skeleton-text {
    height: 12px;
    margin: 6px 0;
}

.skeleton-title {
    height: 18px;
    margin: 8px 0;
}

.skeleton-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
}

@keyframes px-skeleton {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ============================================================
   TOAST
   ============================================================ */

.toast {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);

    z-index: var(--z-toast);

    min-width: 220px;
    max-width: min(90vw, 480px);

    padding: var(--space-4) var(--space-5);

    border: 1px solid var(--border);
    border-radius: var(--radius-md);

    background: var(--bg-surface);
    color: var(--text);

    font-size: var(--fs-md);
    font-weight: var(--fw-medium);

    text-align: center;

    box-shadow: var(--shadow-lg);

    animation: px-toast-in var(--transition-spring) ease;
}

.toast-success {
    background: var(--success);
    color: #ffffff;
    border-color: var(--success);
}

.toast-error {
    background: var(--danger);
    color: #ffffff;
    border-color: var(--danger);
}

.toast-warning {
    background: var(--warning);
    color: #ffffff;
    border-color: var(--warning);
}

.toast-info {
    background: var(--bg-surface);
    color: var(--text);
}

.toast.is-hiding {
    animation: px-toast-out var(--transition) ease forwards;
}

@keyframes px-toast-in {
    from { opacity: 0; transform: translate(-50%, -50%) scale(0.94); }
    to   { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}

@keyframes px-toast-out {
    from { opacity: 1; transform: translate(-50%, -50%) scale(1); }
    to   { opacity: 0; transform: translate(-50%, -50%) scale(0.94); }
}

/* ============================================================
   ACCORDION
   ============================================================ */

.accordion {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-2);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-fast);
}

.accordion:hover {
    border-color: var(--border-hover);
}

.accordion.open {
    border-color: var(--accent);
}

.accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);

    padding: var(--space-3) var(--space-4);

    cursor: pointer;
    user-select: none;

    transition: background-color var(--transition-fast);
}

.accordion-header:hover {
    background: var(--bg-surface-hover);
}

.accordion-title {
    display: flex;
    align-items: center;
    gap: var(--space-2);

    color: var(--text);
    font-size: var(--fs-md);
    font-weight: var(--fw-semibold);

    min-width: 0;
}

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

.accordion-arrow {
    color: var(--text-muted);
    font-size: var(--fs-sm);
    transition: transform var(--transition), color var(--transition-fast);
    flex-shrink: 0;
}

.accordion.open .accordion-arrow {
    transform: rotate(180deg);
    color: var(--accent);
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    padding: 0 var(--space-4);
    transition: max-height var(--transition-slow),
        padding var(--transition-slow);
}

.accordion.open .accordion-body {
    max-height: 4000px;
    padding: 0 var(--space-4) var(--space-4);
}

/* ============================================================
   MODAL
   ============================================================ */

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);

    display: flex;
    align-items: center;
    justify-content: center;

    padding: var(--space-4);

    background: var(--bg-overlay);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);

    animation: px-fade-in var(--transition) ease;
}

.modal-overlay[hidden] {
    display: none !important;
}

.modal {
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;

    display: flex;
    flex-direction: column;

    border: 1px solid var(--border);
    border-radius: var(--radius-xl);

    background: var(--bg-surface);
    color: var(--text);

    box-shadow: var(--shadow-lg);

    animation: px-modal-in var(--transition-spring) ease;
}

@keyframes px-modal-in {
    from { opacity: 0; transform: translateY(14px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-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);
}

.modal-title {
    color: var(--text);
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
}

.modal-close {
    display: grid;
    place-items: center;

    width: 32px;
    height: 32px;

    border-radius: var(--radius-sm);

    color: var(--text-muted);
    font-size: var(--fs-xl);

    transition: background-color var(--transition-fast),
        color var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-surface-hover);
    color: var(--text);
}

.modal-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: var(--space-5);
}

.modal-footer {
    display: flex;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5) var(--space-5);
    border-top: 1px solid var(--border);
}

.modal-footer .button {
    flex: 1;
}

/* Модификаторы размера */

.modal-sm { max-width: 380px; }
.modal-lg { max-width: 640px; }
.modal-xl { max-width: 880px; }

/* ============================================================
   SWITCH (iOS-style)
   ============================================================ */

.switch {
    position: relative;
    display: inline-block;

    width: 38px;
    height: 22px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
    position: absolute;
}

.switch .slider {
    position: absolute;
    inset: 0;
    cursor: pointer;
    border-radius: var(--radius-full);
    background: var(--border);
    transition: background-color var(--transition);
}

.switch .slider::before {
    content: "";
    position: absolute;
    left: 3px;
    bottom: 3px;

    width: 16px;
    height: 16px;

    border-radius: 50%;
    background: #ffffff;

    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);

    transition: transform var(--transition-spring);
}

.switch input:checked + .slider {
    background: var(--accent);
}

.switch input:checked + .slider::before {
    transform: translateX(16px);
}

.switch input:focus-visible + .slider {
    outline: none;
    box-shadow: var(--shadow-focus);
}

.switch input:disabled + .slider {
    opacity: 0.4;
    cursor: not-allowed;
}

.switch-sm {
    width: 32px;
    height: 18px;
}

.switch-sm .slider::before {
    width: 14px;
    height: 14px;
    left: 2px;
    bottom: 2px;
}

.switch-sm input:checked + .slider::before {
    transform: translateX(14px);
}

/* ============================================================
   DROPDOWN
   ============================================================ */

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    z-index: var(--z-dropdown);

    min-width: 200px;
    padding: var(--space-2);

    border: 1px solid var(--border);
    border-radius: var(--radius-md);

    background: var(--bg-surface);
    color: var(--text);

    box-shadow: var(--shadow-md);

    animation: px-fade-slide var(--transition-fast) ease;
}

.dropdown-menu[hidden] {
    display: none !important;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);

    width: 100%;
    min-height: 36px;
    padding: 0 var(--space-3);

    border: 0;
    border-radius: var(--radius-xs);

    background: transparent;
    color: var(--text);

    font-size: var(--fs-sm);
    font-weight: var(--fw-medium);
    text-align: left;

    transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-surface-hover);
}

.dropdown-item.danger {
    color: var(--danger);
}

.dropdown-item.danger:hover {
    background: var(--danger-soft);
}

.dropdown-divider {
    height: 1px;
    margin: var(--space-1) 0;
    background: var(--border);
}

/* ============================================================
   TOOLTIP (инлайновый, без JS)
   ============================================================ */

.tooltip {
    position: relative;
    display: inline-flex;
}

.tooltip::after {
    content: attr(data-tooltip);

    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translate(-50%, 4px);

    z-index: var(--z-dropdown);

    min-width: max-content;
    max-width: 260px;

    padding: 6px 10px;

    border-radius: var(--radius-xs);

    background: var(--text);
    color: var(--bg-page);

    font-size: var(--fs-xs);
    font-weight: var(--fw-medium);
    line-height: var(--lh-normal);
    text-align: center;
    white-space: nowrap;

    opacity: 0;
    visibility: hidden;
    pointer-events: none;

    transition: opacity var(--transition-fast),
        transform var(--transition-fast),
        visibility var(--transition-fast);
}

.tooltip:hover::after,
.tooltip:focus-visible::after {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}

/* ============================================================
   INFO-TIP (кнопка с иконкой "i")
   ============================================================ */

.info-tip {
    display: inline-grid;
    place-items: center;

    width: 18px;
    height: 18px;

    border-radius: 50%;

    background: transparent;
    color: var(--text-muted);

    cursor: help;

    transition: color var(--transition-fast);
}

.info-tip:hover,
.info-tip:focus-visible {
    color: var(--accent);
    outline: none;
}

.info-tip [data-lucide] {
    width: 15px;
    height: 15px;
}

/* ============================================================
   DIVIDER
   ============================================================ */

.divider {
    height: 1px;
    margin: var(--space-3) 0;
    background: var(--border);
}

.divider-vertical {
    display: inline-block;
    width: 1px;
    height: 20px;
    margin: 0 var(--space-2);
    background: var(--border);
    vertical-align: middle;
}

/* ============================================================
   АДАПТИВ
   ============================================================ */

@media (max-width: 640px) {
    .card {
        padding: var(--space-4);
        border-radius: var(--radius-md);
    }

    .modal-overlay {
        align-items: flex-end;
        padding: 0;
    }

    .modal {
        max-width: 100%;
        max-height: 92dvh;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        animation: px-modal-up var(--transition-spring) ease;
    }

    .modal-sm,
    .modal-lg,
    .modal-xl {
        max-width: 100%;
    }

    @keyframes px-modal-up {
        from { opacity: 0; transform: translateY(100%); }
        to   { opacity: 1; transform: translateY(0); }
    }

    .empty-state {
        min-height: 160px;
        padding: var(--space-5) var(--space-3);
    }

    .toast {
        top: auto;
        bottom: calc(84px + env(safe-area-inset-bottom));
        transform: translate(-50%, 0);
        animation: px-toast-up var(--transition) ease;
    }

    @keyframes px-toast-up {
        from { opacity: 0; transform: translate(-50%, 12px); }
        to   { opacity: 1; transform: translate(-50%, 0); }
    }
}