/* ============================================================
   LIGHTSPEED MICRO-INTERACTIONS & FEEDBACK
   Phase 2 polish: hover states, click feedback, transitions,
   skeleton loaders, button loading states
   ============================================================ */

/* ══════════════════════════════════════════════════════════════
   PHASE 7: BRAND & VISUAL CONSISTENCY
   ══════════════════════════════════════════════════════════════ */

/* ── 7.1 Custom Scrollbar ───────────────────────────────────── */

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.12);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.25);
}

/* Firefox scrollbar */
* {
    scrollbar-width: thin;
    scrollbar-color: rgba(0, 0, 0, 0.12) transparent;
}

/* ── 2.1 Global Button Hover & Active ─────────────────────── */

/* Generic button press feedback — applies to all buttons unless overridden */
button:active:not(:disabled),
.btn:active:not(:disabled),
[role="button"]:active:not(:disabled) {
    transform: scale(0.97) !important;
    transition-duration: 0.05s !important;
}

/* Sidebar nav buttons */
.sidebar-btn {
    transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
}
.sidebar-btn:hover {
    background: var(--bg-alt);
}

/* Table rows — hover highlight */
.data-table tbody tr,
.usage-table tbody tr,
.ls-table tbody tr,
table tbody tr {
    transition: background 0.15s ease;
}
.data-table tbody tr:hover,
.usage-table tbody tr:hover,
.ls-table tbody tr:hover {
    background: var(--bg-alt);
}

/* Zebra striping for data-heavy tables */
.data-table tbody tr:nth-child(even),
.ls-table tbody tr:nth-child(even) {
    background: rgba(0, 0, 0, 0.015);
}
.data-table tbody tr:nth-child(even):hover,
.ls-table tbody tr:nth-child(even):hover {
    background: var(--bg-alt);
}

/* ── Markdown / AI-generated table ──────────────────────────── */

.ls-table-wrap {
    overflow-x: auto;
    margin: 0.5em 0;
    border-radius: var(--radius-md, 8px);
    border: 1px solid var(--border, #e5e7eb);
}

.ls-table {
    border-collapse: collapse;
    width: 100%;
    font-size: 0.88em;
}

.ls-table th {
    padding: 8px 12px;
    text-align: left;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--text-muted, #6b7280);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border, #e5e7eb);
    white-space: nowrap;
    background: var(--bg-alt, #f9fafb);
}

.ls-table td {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border, #e5e7eb);
    color: var(--text-primary, #1a1a2e);
}

.ls-table tr:last-child td {
    border-bottom: none;
}

/* Sort indicator transition (for future sorting) */
.ls-sort-icon {
    display: inline-block;
    margin-left: 4px;
    opacity: 0.3;
    transition: opacity 0.15s ease, transform 0.15s ease;
}
.ls-sort-icon.active {
    opacity: 1;
}
.ls-sort-icon.desc {
    transform: rotate(180deg);
}

/* Card hover elevation (elements not already covered by .ls-card) */
.hb-post,
.als-conversation-item,
.template-card,
.rule-item {
    transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.hb-post:hover,
.template-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border);
}

/* Settings card sections */
.settings-section,
.manage-card {
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.settings-section:hover,
.manage-card:hover {
    box-shadow: var(--shadow-sm);
}

/* Toast notification icons — use proper SVG size */
.toast-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ── 2.2 View / Tab Transitions ───────────────────────────── */

/* Smooth page transitions (pages use .active class) */
.page {
    opacity: 0;
    transition: opacity 0.18s ease;
}
.page.active {
    opacity: 1;
}

/* Tool app transitions */
.app-container {
    opacity: 0;
    transition: opacity 0.18s ease;
}
.app-container.visible {
    opacity: 1;
}

/* Tab panel content fade */
.data-page {
    opacity: 0;
    transition: opacity 0.15s ease;
}
.data-page.active {
    opacity: 1;
}

/* Compare tabs */
.compare-result-panel {
    opacity: 0;
    transition: opacity 0.15s ease;
}
.compare-result-panel.active {
    opacity: 1;
}

/* Landing demo panels */
.tool-description-panel {
    opacity: 0;
    transition: opacity 0.15s ease;
}
.tool-description-panel.active {
    opacity: 1;
}

/* ── 2.3 Skeleton Loading ─────────────────────────────────── */

/* Shimmer variant — more premium than pulse */
@keyframes skeleton-shimmer {
    0% { background-position: -400px 0; }
    100% { background-position: 400px 0; }
}

.skeleton-shimmer {
    background: linear-gradient(90deg, var(--border) 25%, #f0f4f8 37%, var(--border) 63%);
    background-size: 800px 100%;
    animation: skeleton-shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

/* Skeleton group container */
.skeleton-group {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Skeleton post (Home Base style) */
.skeleton-post {
    padding: 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.skeleton-post-header {
    display: flex;
    align-items: center;
    gap: 10px;
}
.skeleton-post-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
}
.skeleton-post-meta {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.skeleton-post-name {
    height: 12px;
    width: 120px;
}
.skeleton-post-date {
    height: 10px;
    width: 80px;
}
.skeleton-post-body {
    height: 14px;
    width: 100%;
}
.skeleton-post-body-short {
    height: 14px;
    width: 65%;
}

/* Skeleton list item */
.skeleton-list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}
.skeleton-list-icon {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-sm);
}
.skeleton-list-text {
    height: 13px;
    flex: 1;
}

/* ── 2.4 Button Loading States ────────────────────────────── */

/* Loading spinner for buttons */
@keyframes ls-btn-spin {
    to { transform: rotate(360deg); }
}

.ls-btn-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: ls-btn-spin 0.6s linear infinite;
    margin-right: 6px;
    vertical-align: middle;
}

/* Dark spinner for secondary/light buttons */
.ls-btn-spinner-dark {
    border-color: rgba(0, 0, 0, 0.15);
    border-top-color: var(--text-secondary);
}

/* Button loading state */
.ls-btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.8;
    cursor: not-allowed;
}

/* Proper disabled button styling */
button:disabled,
.btn:disabled,
[role="button"][aria-disabled="true"] {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Transition for button state changes */
button,
.btn,
[role="button"] {
    transition: background 0.15s ease, color 0.15s ease, opacity 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

/* ══════════════════════════════════════════════════════════════
   PHASE 3: FORM EXPERIENCE
   ══════════════════════════════════════════════════════════════ */

/* ── 3.1 Enhanced Input Focus ─────────────────────────────── */

/* Override generic focus to use brand color */
textarea:focus,
input:focus,
select:focus {
    border-color: var(--cta) !important;
    box-shadow: 0 0 0 3px rgba(99, 91, 255, 0.12) !important;
    outline: none;
}

/* Smooth transition on all form inputs */
input,
textarea,
select {
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

/* ── 3.2 Inline Validation ────────────────────────────────── */

/* Valid state */
input.ls-valid,
textarea.ls-valid {
    border-color: var(--success) !important;
    box-shadow: 0 0 0 3px rgba(48, 177, 48, 0.08) !important;
}

/* Invalid state */
input.ls-invalid,
textarea.ls-invalid {
    border-color: var(--danger) !important;
    box-shadow: 0 0 0 3px rgba(223, 27, 65, 0.08) !important;
}

/* Validation message below input */
.ls-validation-msg {
    font-size: 0.75rem;
    margin-top: 4px;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: opacity 0.15s ease, max-height 0.15s ease, margin 0.15s ease;
}
.ls-validation-msg.visible {
    opacity: 1;
    max-height: 30px;
    margin-top: 4px;
}
.ls-validation-msg.error {
    color: var(--danger);
}
.ls-validation-msg.success {
    color: var(--success);
}

/* ── 3.3 Disabled States (CSS-only) ──────────────────────── */

/* Disabled inputs */
input:disabled,
textarea:disabled,
select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--bg-alt);
}

/* ══════════════════════════════════════════════════════════════
   PHASE 6: NAVIGATION & PAGE TRANSITIONS
   ══════════════════════════════════════════════════════════════ */

/* ── 6.1 Active Nav Indicator ───────────────────────────────── */

/* Left accent bar on active sidebar button */
.sidebar-btn.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: #E91E8C;
    border-radius: 0 3px 3px 0;
    opacity: 1;
    transition: opacity 0.2s ease, height 0.2s ease;
}

.sidebar-btn::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0%;
    background: #E91E8C;
    border-radius: 0 3px 3px 0;
    opacity: 0;
    transition: opacity 0.2s ease, height 0.2s ease;
}

/* ── 6.2 Enhanced Page Transitions ──────────────────────────── */

@keyframes ls-page-enter {
    from {
        opacity: 0;
        transform: translateY(6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page.active {
    animation: ls-page-enter 0.25s ease-out !important;
}

/* ── 6.3 Sidebar Group Labels ───────────────────────────────── */

.sidebar-group-label {
    transition: color 0.15s ease;
}

/* ══════════════════════════════════════════════════════════════
   PHASE 4: EMPTY STATES & EDGE CASES
   ══════════════════════════════════════════════════════════════ */

/* ── 4.1 Empty State Component ──────────────────────────────── */

.ls-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2.5rem 1.5rem;
    text-align: center;
}

.ls-empty-icon {
    color: var(--text-muted, #9ca3af);
    margin-bottom: 1rem;
    opacity: 0.6;
}

.ls-empty-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary, #1a1a2e);
    margin: 0 0 0.35rem 0;
}

.ls-empty-message {
    font-size: 0.8rem;
    color: var(--text-muted, #9ca3af);
    margin: 0;
    max-width: 280px;
    line-height: 1.5;
}

.ls-empty-btn {
    margin-top: 1rem;
    padding: 0.45rem 1.1rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: #fff;
    background: var(--cta, #635BFF);
    border: none;
    border-radius: var(--radius-pill, 24px);
    cursor: pointer;
    transition: background 0.15s ease, transform 0.15s ease;
}
.ls-empty-btn:hover {
    background: var(--cta-hover, #524aee);
}

/* Compact variant for small containers (sidebars, dropdowns) */
.ls-empty-state.ls-empty-compact {
    padding: 1rem 0.75rem;
}
.ls-empty-compact .ls-empty-icon {
    margin-bottom: 0.5rem;
}
.ls-empty-compact .ls-empty-icon svg {
    width: 24px;
    height: 24px;
}
.ls-empty-compact .ls-empty-title {
    font-size: 0.8rem;
}
.ls-empty-compact .ls-empty-message {
    font-size: 0.75rem;
}

/* ── 4.2 Network Error Banner ───────────────────────────────── */

.ls-network-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10000;
    background: var(--danger, #DF1B41);
    color: #fff;
    text-align: center;
    padding: 8px 16px;
    font-size: 0.8rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}
.ls-network-banner.visible {
    transform: translateY(0);
}
.ls-network-banner-icon {
    display: flex;
    align-items: center;
}
.ls-network-banner-dismiss {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #fff;
    font-size: 1.1rem;
    cursor: pointer;
    opacity: 0.7;
    padding: 2px 6px;
}
.ls-network-banner-dismiss:hover {
    opacity: 1;
}

/* ══════════════════════════════════════════════════════════════
   PHASE 8: SUCCESS & DELIGHT
   ══════════════════════════════════════════════════════════════ */

/* ── 8.1 Success Flash on Copy ──────────────────────────────── */

@keyframes ls-success-flash {
    0% { box-shadow: 0 0 0 0 rgba(48, 177, 48, 0.4); }
    50% { box-shadow: 0 0 0 4px rgba(48, 177, 48, 0.15); }
    100% { box-shadow: 0 0 0 0 rgba(48, 177, 48, 0); }
}

.btn-copy.copied,
.template-copy-btn.copied,
button.copied {
    animation: ls-success-flash 0.6s ease-out;
}

/* ── 8.2 Subtle Pulse on Save ───────────────────────────────── */

@keyframes ls-save-pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.03); }
    100% { transform: scale(1); }
}

.ls-saved {
    animation: ls-save-pulse 0.3s ease;
}

/* ── 8.3 Card Entry Animation ───────────────────────────────── */

@keyframes ls-card-enter {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hb-post {
    animation: ls-card-enter 0.3s ease-out both;
}

/* Stagger posts for a cascade effect */
.hb-post:nth-child(1) { animation-delay: 0s; }
.hb-post:nth-child(2) { animation-delay: 0.05s; }
.hb-post:nth-child(3) { animation-delay: 0.1s; }
.hb-post:nth-child(4) { animation-delay: 0.15s; }
.hb-post:nth-child(5) { animation-delay: 0.2s; }