/* ============================================================
   HOME SEARCH — Premium Command-Palette Redesign
   Standalone CSS for the homepage smart-search trigger button
   and the fullscreen search dialog overlay.
   ============================================================ */

/* -------------------------------------------------------
   0. Design Tokens (scoped)
   ------------------------------------------------------- */
:root {
    /* Search palette — deep navy & cyan-mint accent */
    --hs-bg-deep:       hsl(212, 72%, 7%);
    --hs-bg-panel:      hsl(213, 55%, 10%);
    --hs-bg-card:       hsl(215, 48%, 13%);
    --hs-border-subtle: hsla(213, 40%, 40%, 0.22);
    --hs-border-glow:   hsla(187, 92%, 58%, 0.45);
    --hs-text-primary:  hsl(210, 40%, 92%);
    --hs-text-muted:    hsl(215, 25%, 58%);
    --hs-text-dim:      hsl(215, 20%, 42%);
    --hs-accent:        hsl(187, 92%, 58%);
    --hs-accent-soft:   hsla(187, 92%, 58%, 0.12);
    --hs-accent-glow:   hsla(187, 92%, 58%, 0.28);
    --hs-accent-mid:    hsl(199, 89%, 48%);
    --hs-accent-warm:   hsl(45, 93%, 58%);
    --hs-warning-bg:    hsla(38, 92%, 50%, 0.08);
    --hs-warning-border:hsla(38, 92%, 50%, 0.28);
    --hs-warning-text:  hsl(48, 96%, 89%);
    --hs-radius-lg:     22px;
    --hs-radius-md:     14px;
    --hs-radius-sm:     8px;
    --hs-font:          'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --hs-transition:    220ms cubic-bezier(0.22, 1, 0.36, 1);
}

/* -------------------------------------------------------
   1. HERO SEARCH TRIGGER
   ------------------------------------------------------- */
.home-smart-search-trigger {
    position: relative;
    width: min(100%, 640px);
    min-height: 58px;
    margin: 24px auto 8px;
    padding: 7px 10px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fff;
    font-family: 'Plus Jakarta Sans', var(--hs-font);
    background: rgba(15, 23, 42, 0.78);
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: 16px;
    cursor: pointer;
    text-align: left;
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.28), inset 0 1px rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(14px) saturate(135%);
    -webkit-backdrop-filter: blur(14px) saturate(135%);
    transition:
        transform var(--hs-transition),
        box-shadow var(--hs-transition),
        border-color var(--hs-transition),
        background-color var(--hs-transition);
    z-index: 1;
    overflow: hidden;
}

.home-smart-search-trigger::before {
    content: '';
    position: absolute;
    inset: auto 0 0;
    height: 2px;
    background: linear-gradient(90deg, #4f46e5, #0ea5e9, #10b981);
    opacity: 0.9;
}

.home-smart-search-trigger:hover {
    transform: translateY(-2px);
    border-color: rgba(129, 140, 248, 0.85);
    background: rgba(15, 23, 42, 0.9);
    box-shadow: 0 22px 48px rgba(15, 23, 42, 0.35), 0 0 0 3px rgba(79, 70, 229, 0.16);
}

.home-smart-search-trigger:focus-visible {
    outline: 3px solid rgba(129, 140, 248, 0.9);
    outline-offset: 3px;
}

/* Search icon */
.home-smart-search-trigger > i {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    color: #fff;
    background: linear-gradient(135deg, #4f46e5, #0ea5e9);
    font-size: 0.95rem;
    flex-shrink: 0;
    box-shadow: 0 7px 18px rgba(79, 70, 229, 0.38);
}

/* Placeholder text */
.home-smart-search-trigger > span {
    flex: 1;
    font-size: clamp(0.88rem, 1.5vw, 1rem);
    font-weight: 650;
    letter-spacing: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: rgba(255, 255, 255, 0.88);
}

/* Kbd badge shared between trigger and dialog */
.home-smart-search-trigger kbd,
.home-search-dialog kbd {
    font-family: var(--hs-font);
    font-size: 0.68rem;
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0.04em;
    padding: 5px 8px;
    color: hsl(215,20%,42%);
    background: hsl(214,32%,96%);
    border: 1px solid hsl(214,28%,88%);
    border-bottom-width: 2px;
    border-radius: 6px;
}

.home-smart-search-trigger kbd {
    color: rgba(255, 255, 255, 0.78);
    background: rgba(255, 255, 255, 0.09);
    border-color: rgba(255, 255, 255, 0.2);
}

/* -------------------------------------------------------
   2. OVERLAY + BACKDROP
   ------------------------------------------------------- */
.home-search-overlay {
    position: fixed;
    inset: 0;
    z-index: 100000;
    display: grid;
    place-items: start center;
    padding: min(11vh, 100px) 20px 28px;
}
.home-search-overlay[hidden] {
    display: none;
}

.home-search-backdrop {
    position: absolute;
    inset: 0;
    background: hsla(212,72%,5%,0.82);
    backdrop-filter: blur(18px) saturate(1.4);
    -webkit-backdrop-filter: blur(18px) saturate(1.4);
    animation: hsBackdropIn 200ms ease-out both;
}

/* -------------------------------------------------------
   3. DIALOG (the command-palette card)
   ------------------------------------------------------- */
.home-search-dialog {
    position: relative;
    width: min(980px, 100%);
    max-height: min(700px, 82vh);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    color: var(--hs-text-primary);
    font-family: var(--hs-font);
    background:
        radial-gradient(ellipse 70% 50% at 20% 0%, hsla(187,80%,40%,0.06) 0%, transparent 60%),
        var(--hs-bg-panel);
    border: 1px solid var(--hs-border-subtle);
    border-radius: var(--hs-radius-lg);
    box-shadow:
        0 0 0 1px hsla(187,60%,40%,0.08),
        0 40px 100px -12px rgba(0,0,0,0.55),
        0 0 80px -20px hsla(187,92%,58%,0.08);
    animation: hsDialogIn 240ms cubic-bezier(0.22,1,0.36,1) both;
}

/* -------------------------------------------------------
   4. INPUT ROW
   ------------------------------------------------------- */
.home-search-input-row {
    min-height: 80px;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 28px;
    border-bottom: 1px solid var(--hs-border-subtle);
    background: hsla(213,55%,10%,0.5);
}
.home-search-input-row > i {
    color: var(--hs-accent);
    font-size: 1.35rem;
    filter: drop-shadow(0 0 6px hsla(187,92%,58%,0.35));
}
.home-search-input-row input {
    min-width: 0;
    flex: 1;
    border: 0;
    outline: 0;
    color: hsl(210,30%,96%);
    background: transparent;
    font-family: var(--hs-font);
    font-size: clamp(0.98rem, 1.8vw, 1.22rem);
    font-weight: 450;
    caret-color: var(--hs-accent);
    letter-spacing: 0.01em;
}
.home-search-input-row input::placeholder {
    color: var(--hs-text-dim);
    font-weight: 400;
}

/* ESC badge */
.home-search-esc {
    padding: 4px 8px;
    color: var(--hs-text-muted);
    background: hsla(213,40%,40%,0.1);
    border: 1px solid hsla(213,40%,40%,0.18);
    border-radius: 6px;
    font-family: var(--hs-font);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.06em;
}

/* Close button */
.home-search-close {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 12px;
    color: var(--hs-accent);
    background: var(--hs-accent-soft);
    cursor: pointer;
    font-size: 1rem;
    transition:
        color 160ms ease,
        background 160ms ease;
}
.home-search-close:hover,
.home-search-close:focus-visible {
    color: hsl(0,0%,100%);
    background: var(--hs-accent-glow);
    outline: 2px solid var(--hs-accent);
    outline-offset: 1px;
}

/* -------------------------------------------------------
   5. CONTENT AREA
   ------------------------------------------------------- */
.home-search-content {
    min-height: 0;
    max-height: min(54vh, 480px);
    flex: 1 1 auto;
    padding: 22px 28px 28px;
    overflow-y: auto;
    /* Custom scrollbar */
    scrollbar-width: thin;
    scrollbar-color: hsla(213,40%,40%,0.25) transparent;
}
.home-search-content::-webkit-scrollbar {
    width: 6px;
}
.home-search-content::-webkit-scrollbar-track {
    background: transparent;
}
.home-search-content::-webkit-scrollbar-thumb {
    background: hsla(213,40%,40%,0.3);
    border-radius: 3px;
}

/* Heading row */
.home-search-heading-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 16px;
}
.home-search-eyebrow {
    margin: 0;
    color: var(--hs-text-muted);
    font-family: var(--hs-font);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}
.home-search-status {
    color: var(--hs-accent);
    font-size: 0.78rem;
    font-weight: 500;
}

/* -------------------------------------------------------
   6. RESULT CARDS (2-column grid)
   ------------------------------------------------------- */
.home-search-results {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    gap: 10px;
}

.home-search-result {
    min-height: 74px;
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) 22px;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    color: var(--hs-text-primary);
    text-decoration: none;
    background: hsla(215,48%,16%,0.5);
    border: 1px solid var(--hs-border-subtle);
    border-radius: var(--hs-radius-md);
    transition:
        background var(--hs-transition),
        border-color var(--hs-transition),
        transform var(--hs-transition),
        box-shadow var(--hs-transition);
    /* Staggered entrance */
    animation: hsResultIn 260ms cubic-bezier(0.22,1,0.36,1) both;
}
.home-search-result:nth-child(1)  { animation-delay:  40ms; }
.home-search-result:nth-child(2)  { animation-delay:  70ms; }
.home-search-result:nth-child(3)  { animation-delay: 100ms; }
.home-search-result:nth-child(4)  { animation-delay: 130ms; }
.home-search-result:nth-child(5)  { animation-delay: 160ms; }
.home-search-result:nth-child(6)  { animation-delay: 190ms; }
.home-search-result:nth-child(7)  { animation-delay: 220ms; }
.home-search-result:nth-child(8)  { animation-delay: 250ms; }

/* Hover & active (keyboard-selected) */
.home-search-result:hover,
.home-search-result.is-active {
    color: hsl(0,0%,100%);
    background: hsla(187,60%,40%,0.12);
    border-color: var(--hs-border-glow);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -4px hsla(187,92%,58%,0.12);
}
.home-search-result:hover .home-search-result-icon,
.home-search-result.is-active .home-search-result-icon {
    background: linear-gradient(135deg, hsla(187,80%,50%,0.22), hsla(199,80%,50%,0.16));
    color: hsl(187,92%,72%);
    box-shadow: 0 0 14px hsla(187,92%,58%,0.18);
}
.home-search-result:hover .home-search-result-arrow,
.home-search-result.is-active .home-search-result-arrow {
    color: var(--hs-accent);
    transform: translateX(3px);
}

/* Icon */
.home-search-result-icon {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 11px;
    color: var(--hs-accent);
    background: var(--hs-accent-soft);
    font-size: 1rem;
    transition:
        background 200ms ease,
        color 200ms ease,
        box-shadow 200ms ease;
}

/* Text */
.home-search-result strong,
.home-search-result small {
    display: block;
}
.home-search-result strong {
    margin-bottom: 3px;
    font-size: 0.94rem;
    font-weight: 600;
    letter-spacing: 0.005em;
}
.home-search-result small {
    color: var(--hs-text-muted);
    font-size: 0.76rem;
    line-height: 1.4;
    font-weight: 400;
}

/* Arrow */
.home-search-result-arrow {
    color: var(--hs-text-dim);
    font-size: 0.72rem;
    transition: color 180ms ease, transform 180ms ease;
}

/* Database content cards: one book/chapter with its related destinations. */
.home-search-group {
    display: flex;
    min-height: 0;
    flex-direction: column;
    align-items: stretch;
    max-height: 245px;
    overflow-y: auto;
    padding: 16px;
}
.home-search-group-heading {
    display: grid;
    grid-template-columns: 42px minmax(0, 1fr);
    align-items: center;
    gap: 12px;
}
.home-search-group-copy {
    min-width: 0;
    overflow: hidden;
    flex: 1;
}
.home-search-group-copy strong,
.home-search-group-copy small {
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
}
.home-search-group-copy strong {
    -webkit-line-clamp: 2;
    overflow-wrap: anywhere;
}
.home-search-group-copy small {
    -webkit-line-clamp: 2;
}
.home-search-group-meta {
    margin: 12px 0 12px 54px;
    display: -webkit-box;
    overflow: hidden;
    color: var(--hs-text-muted);
    font-size: 0.76rem;
    line-height: 1.4;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}
.home-search-actions {
    display: flex;
    max-height: 74px;
    flex-wrap: wrap;
    gap: 8px;
    margin-left: 54px;
    overflow-y: auto;
}
.home-search-action {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    min-height: 34px;
    padding: 7px 10px;
    color: var(--hs-text-primary);
    background: var(--hs-accent-soft);
    border: 1px solid var(--hs-border-subtle);
    border-radius: 9px;
    font-size: 0.72rem;
    font-weight: 650;
    transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}
.home-search-action:hover,
.home-search-action:focus-visible {
    color: #fff;
    background: var(--hs-accent-mid);
    border-color: var(--hs-accent);
    transform: translateY(-1px);
    outline: none;
}
.home-search-action i {
    color: var(--hs-accent);
}
.home-search-action:hover i,
.home-search-action:focus-visible i {
    color: #fff;
}

/* -------------------------------------------------------
   7. EMPTY STATE
   ------------------------------------------------------- */
.home-search-empty {
    margin-bottom: 16px;
    padding: 16px 18px;
    color: var(--hs-warning-text);
    background: var(--hs-warning-bg);
    border: 1px solid var(--hs-warning-border);
    border-radius: var(--hs-radius-md);
    animation: hsResultIn 220ms ease both;
}
.home-search-empty strong,
.home-search-empty span {
    display: block;
}
.home-search-empty strong {
    font-size: 0.92rem;
    font-weight: 600;
}
.home-search-empty span {
    margin-top: 5px;
    color: hsl(215,18%,72%);
    font-size: 0.82rem;
    line-height: 1.4;
}

/* -------------------------------------------------------
   8. FOOTER
   ------------------------------------------------------- */
.home-search-footer {
    min-height: 58px;
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 10px 28px;
    color: var(--hs-text-dim);
    background: hsla(213,55%,8%,0.6);
    border-top: 1px solid var(--hs-border-subtle);
    font-family: var(--hs-font);
    font-size: 0.73rem;
    font-weight: 500;
}
.home-search-footer span {
    display: flex;
    align-items: center;
    gap: 6px;
}
.home-search-footer kbd {
    padding: 3px 6px;
    font-size: 0.64rem;
}
.home-search-smart-note {
    margin-left: auto;
    color: var(--hs-accent);
    font-weight: 600;
}
.home-search-smart-note i {
    font-size: 0.72rem;
}

/* -------------------------------------------------------
   9. BODY LOCK  &  SR-ONLY
   ------------------------------------------------------- */
body.home-search-open {
    overflow: hidden;
}
.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* -------------------------------------------------------
   10. KEYFRAME ANIMATIONS
   ------------------------------------------------------- */
@keyframes hsBackdropIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes hsDialogIn {
    from {
        opacity: 0;
        transform: translateY(-14px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}
@keyframes hsResultIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* -------------------------------------------------------
   11. RESPONSIVE — TABLET  (≤ 900px)
   ------------------------------------------------------- */
@media (max-width: 900px) {
    .home-smart-search-trigger {
        width: min(100%, 560px);
        min-height: 56px;
    }
    .home-search-dialog {
        width: min(94%, 100%);
    }
    .home-search-results {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
}

/* -------------------------------------------------------
   12. RESPONSIVE — MOBILE  (≤ 700px)
   ------------------------------------------------------- */
@media (max-width: 700px) {
    .home-smart-search-trigger {
        width: 100%;
        min-height: 54px;
        margin: 18px auto 4px;
        padding: 6px 8px;
        gap: 10px;
        border-radius: 14px;
    }
    .home-smart-search-trigger kbd {
        display: none;
    }
    .home-smart-search-trigger > i {
        width: 34px;
        height: 34px;
        border-radius: 9px;
        font-size: 0.85rem;
    }
    .home-search-overlay {
        padding: 10px 8px;
        place-items: start center;
    }
    .home-search-dialog {
        max-height: calc(100dvh - 20px);
        border-radius: 18px;
    }
    .home-search-input-row {
        min-height: 66px;
        padding: 0 16px;
        gap: 12px;
    }
    .home-search-input-row > i {
        font-size: 1.1rem;
    }
    .home-search-esc {
        display: none;
    }
    .home-search-close {
        width: 38px;
        height: 38px;
        border-radius: 10px;
    }

    .home-search-content {
        padding: 18px 16px 22px;
    }
    .home-search-results {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    .home-search-result {
        min-height: 64px;
        padding: 12px 14px;
        border-radius: 12px;
    }
    .home-search-group {
        padding: 12px;
    }
    .home-search-group-meta,
    .home-search-actions {
        margin-left: 48px;
    }
    .home-search-action {
        flex: 1 1 calc(50% - 8px);
        justify-content: center;
        text-align: center;
    }
    .home-search-result-icon {
        width: 38px;
        height: 38px;
        border-radius: 9px;
    }

    .home-search-footer {
        padding: 10px 16px;
        gap: 12px;
        flex-wrap: wrap;
    }
    /* Hide navigate + close shortcuts on mobile — keep Enter + smart note */
    .home-search-footer span:nth-child(1),
    .home-search-footer span:nth-child(3) {
        display: none;
    }
    .home-search-smart-note {
        text-align: right;
    }
}

/* -------------------------------------------------------
   13. RESPONSIVE — SMALL MOBILE  (≤ 480px)
   ------------------------------------------------------- */
@media (max-width: 480px) {
    .home-smart-search-trigger {
        width: 100%;
        min-height: 50px;
        border-radius: 12px;
        gap: 10px;
    }
    .home-smart-search-trigger > span {
        font-size: 0.84rem;
    }
    .home-smart-search-trigger > i {
        width: 30px;
        height: 30px;
        border-radius: 8px;
        font-size: 0.78rem;
    }
    .home-search-dialog {
        border-radius: 14px;
    }
    .home-search-input-row {
        min-height: 58px;
        padding: 0 12px;
    }
    .home-search-content {
        padding: 14px 12px 18px;
    }
    .home-search-result {
        grid-template-columns: 36px minmax(0,1fr) 18px;
        gap: 10px;
        padding: 10px 12px;
    }
    .home-search-group-meta,
    .home-search-actions {
        margin-left: 0;
    }
    .home-search-action {
        flex-basis: 100%;
    }
    .home-search-result strong {
        font-size: 0.86rem;
    }
    .home-search-result small {
        font-size: 0.72rem;
    }
    .home-search-footer {
        min-height: 48px;
        padding: 8px 12px;
        font-size: 0.68rem;
    }
}

/* -------------------------------------------------------
   14. REDUCED MOTION
   ------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    .home-search-dialog,
    .home-search-backdrop {
        animation: none;
    }
    .home-smart-search-trigger,
    .home-search-result,
    .home-search-result-icon,
    .home-search-result-arrow,
    .home-search-close {
        transition: none;
    }
    .home-search-result {
        animation: none;
    }
    .home-smart-search-trigger::before {
        transition: none;
    }
}