/* ============================================================
   DESIGN TOKENS — mirrors shikorviz.com (Pallob Kumar Ray)
   ============================================================ */
:root {
    --ink: #1A1D1F;
    --ink-soft: #3A3D3E;
    --paper: #F5F3EE;
    --paper-raised: #FBFAF7;
    --concrete: #8B8680;
    --rust: #C06B4E;
    --rust-dark: #8F3D22;
    --rust-glow: rgba(192, 107, 78, 0.5);

    --panel: rgba(23, 25, 27, 0.88);
    --panel-raised: rgba(20, 22, 24, 0.96);
    --hairline: rgba(245, 243, 238, 0.14);
    --hairline-strong: rgba(245, 243, 238, 0.26);

    --font-display: "Fraunces", Georgia, serif;
    --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: "JetBrains Mono", "Courier New", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: var(--font-body);
    background: var(--ink);
    color: var(--paper);
    height: 100vh;
    overflow: hidden;
    user-select: none;
    -webkit-font-smoothing: antialiased;
}

#app { position: relative; width: 100vw; height: 100vh; background: var(--ink); }

/* ===== 360 VIEWER ===== */
#viewer { width: 100%; height: 100%; background: #101214; position: relative; }
.psv-container { background: #101214 !important; }

#loadingMsg {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    z-index: 10; color: var(--concrete); font-size: 0.95rem; text-align: center;
    pointer-events: none; font-family: var(--font-mono); letter-spacing: 0.04em;
}
.pkr-loader {
    display: inline-block;
    font-size: 2.2rem;
    line-height: 1;
    color: #FFFFFF;
    animation: pkr-pulse 1.1s ease-in-out infinite;
}
@keyframes pkr-pulse {
    0%, 100% { opacity: 0.3; transform: scale(0.82); }
    50% { opacity: 1; transform: scale(1.05); }
}

/* ============================================================
   SIGNATURE MOTIF — architectural scale-bar divider
   (borrowed straight from the portfolio's own drawing language)
   ============================================================ */
.scale-bar {
    height: 8px;
    background-image: repeating-linear-gradient(to right, var(--hairline-strong) 0, var(--hairline-strong) 1px, transparent 1px, transparent 14px);
    border-bottom: 1px solid var(--hairline-strong);
    opacity: 0.8;
}

/* ============================================================
   PROJECT INFO PANEL (top-left) — spec-sheet / drawing label block
   ============================================================ */
.info-panel {
    position: absolute; top: 20px; left: 20px; z-index: 30;
    max-width: 340px;
    background: var(--panel);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--hairline);
    border-radius: 3px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.45);
    overflow: hidden;
    pointer-events: auto;
    transition: max-width 0.3s cubic-bezier(0.16,1,0.3,1);
}

.info-panel-head {
    display: flex; align-items: center; justify-content: space-between; gap: 14px;
    padding: 16px 18px;
    cursor: pointer;
}

.info-panel-title { display: flex; flex-direction: column; gap: 5px; min-width: 0; }

.info-panel-title h1 {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 1.25rem;
    letter-spacing: 0.01em;
    color: var(--paper);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.info-status {
    display: inline-flex; align-items: center; gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--concrete);
}
.info-status .dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--rust);
    animation: blink-dot 2s infinite;
    flex-shrink: 0;
}
@keyframes blink-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

.info-panel-toggle {
    flex-shrink: 0;
    width: 26px; height: 26px;
    border: 1px solid var(--hairline-strong);
    border-radius: 2px;
    display: flex; align-items: center; justify-content: center;
    color: var(--paper);
    font-size: 0.7rem;
    transition: transform 0.3s cubic-bezier(0.16,1,0.3,1), background 0.2s;
}
.info-panel.expanded .info-panel-toggle { transform: rotate(180deg); background: var(--rust); border-color: var(--rust); }

.info-panel-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s cubic-bezier(0.16,1,0.3,1);
}
.info-panel.expanded .info-panel-body { max-height: 340px; }

.info-panel-body-inner { padding: 16px 18px 18px; }

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 16px;
    margin-bottom: 14px;
}

.info-field dt {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--concrete);
    margin-bottom: 4px;
}
.info-field dd {
    font-size: 0.82rem;
    font-weight: 400;
    color: var(--paper);
    line-height: 1.35;
}

.info-tag {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--rust);
    display: inline-flex; align-items: center; gap: 0.5em;
}
.info-tag::before { content: ''; width: 14px; height: 1px; background: var(--rust); display: inline-block; }

/* ============================================================
   BOTTOM CONTROL BAR — sharp, mono-labelled, brand buttons
   ============================================================ */
.control-bar {
    position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%);
    z-index: 20;
    display: flex; align-items: center; flex-wrap: wrap;
    justify-content: center;
    gap: 3px 4px;
    max-width: 94%;
    background: var(--panel);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--hairline);
    border-radius: 4px;
    padding: 8px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    pointer-events: auto;
}

.cb-btn {
    position: relative;
    overflow: hidden;
    display: inline-flex; align-items: center; gap: 0.5em;
    background: transparent;
    border: 1px solid transparent;
    color: var(--paper);
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 9px 13px;
    border-radius: 2px;
    cursor: pointer;
    white-space: nowrap;
    transition: color 0.3s ease, border-color 0.3s ease;
    z-index: 1;
}
.cb-btn::before {
    content: ''; position: absolute; inset: 0; background: var(--rust);
    transform: scaleX(0); transform-origin: left;
    transition: transform 0.3s cubic-bezier(0.16,1,0.3,1);
    z-index: -1;
}
.cb-btn:hover { border-color: var(--rust); }
.cb-btn:hover::before { transform: scaleX(1); }
.cb-btn.active { background: var(--rust); border-color: var(--rust); }
.cb-btn i { font-size: 0.85rem; }
.cb-btn .lbl { display: inline; }

.cb-sep { width: 1px; height: 22px; background: var(--hairline-strong); margin: 0 3px; }

.room-nav { display: flex; gap: 3px; flex-wrap: wrap; align-items: center; }

.room-btn {
    background: transparent;
    border: 1px solid var(--hairline);
    color: var(--concrete);
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 7px 11px;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.25s ease;
}
.room-btn:hover { color: var(--paper); border-color: var(--hairline-strong); }
.room-btn.active { background: var(--paper); color: var(--ink); border-color: var(--paper); font-weight: 500; }

/* ============================================================
   GALLERY / SCENE SELECTOR — thumbnail based, new feature
   ============================================================ */
.gallery-overlay {
    display: none; position: fixed; inset: 0; z-index: 200;
    background: rgba(15, 16, 17, 0.88);
    backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
    padding: 40px 24px;
    overflow-y: auto;
}
.gallery-overlay.active { display: block; }

.gallery-head {
    max-width: 1040px; margin: 0 auto 22px;
    display: flex; align-items: flex-end; justify-content: space-between;
    gap: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--hairline-strong);
}
.gallery-head .info-tag { margin-bottom: 8px; display: block; }
.gallery-head h2 {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 1.6rem;
    color: var(--paper);
}
.gallery-close {
    flex-shrink: 0;
    width: 40px; height: 40px;
    border: 1px solid var(--hairline-strong);
    border-radius: 2px;
    background: transparent;
    color: var(--paper);
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.2s;
}
.gallery-close:hover { background: var(--rust); border-color: var(--rust); }

.gallery-grid {
    max-width: 1040px; margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 18px;
}

.gallery-card {
    cursor: pointer;
    border: 1px solid var(--hairline);
    border-radius: 3px;
    overflow: hidden;
    background: var(--panel-raised);
    transition: border-color 0.25s ease, transform 0.25s ease;
}
.gallery-card:hover { border-color: var(--rust); transform: translateY(-3px); }
.gallery-card.active { border-color: var(--rust); }

.gallery-card .thumb {
    width: 100%; aspect-ratio: 4/3; object-fit: cover; display: block;
    filter: saturate(0.92);
}
.gallery-card .meta { padding: 12px 14px 14px; }
.gallery-card .meta .num {
    font-family: var(--font-mono); font-size: 0.6rem; letter-spacing: 0.1em;
    color: var(--rust); text-transform: uppercase; margin-bottom: 4px; display: block;
}
.gallery-card .meta .name {
    font-family: var(--font-display); font-size: 1.02rem; font-weight: 500; color: var(--paper);
}

/* ============================================================
   VIDEO MODAL
   ============================================================ */
.video-modal {
    display: none; position: fixed; inset: 0; z-index: 999;
    background: rgba(10, 10, 11, 0.9);
    backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
    justify-content: center; align-items: center; padding: 20px;
}
.video-modal.active { display: flex; }
.video-modal .modal-box {
    background: var(--panel-raised);
    border: 1px solid var(--hairline);
    border-radius: 3px;
    max-width: 900px; width: 100%; padding: 16px;
    box-shadow: 0 30px 80px rgba(0,0,0,0.7);
    position: relative;
}
.video-modal .modal-label {
    font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--rust); margin-bottom: 10px; padding: 0 4px;
    display: inline-flex; align-items: center; gap: 0.5em;
}
.video-modal .modal-label::before { content: ''; width: 14px; height: 1px; background: var(--rust); display: inline-block; }
.video-modal video { width: 100%; height: auto; max-height: 68vh; border-radius: 2px; background: #000; display: block; }
.video-modal .close-video {
    position: absolute; top: 12px; right: 16px;
    width: 34px; height: 34px;
    background: transparent; border: 1px solid var(--hairline-strong); border-radius: 2px;
    color: var(--paper); font-size: 1.3rem; cursor: pointer; transition: 0.2s; z-index: 10;
}
.video-modal .close-video:hover { background: var(--rust); border-color: var(--rust); }
.video-modal .video-controls { display: flex; gap: 8px; align-items: center; padding: 12px 4px 2px; flex-wrap: wrap; }
.video-modal .video-controls button {
    background: transparent; border: 1px solid var(--hairline); color: var(--paper);
    font-size: 0.9rem; cursor: pointer; padding: 8px 12px; border-radius: 2px; transition: 0.2s;
}
.video-modal .video-controls button:hover { border-color: var(--rust); color: var(--rust); }

/* ============================================================
   FLOOR PLAN / LOCATION OVERLAYS
   ============================================================ */
.overlay {
    display: none; position: fixed; inset: 0; z-index: 100;
    background: rgba(10, 10, 11, 0.82);
    backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
    justify-content: center; align-items: center; padding: 26px;
}
.overlay.active { display: flex; }
.overlay .box {
    background: var(--panel-raised);
    border: 1px solid var(--hairline);
    border-radius: 3px;
    padding: 26px; max-width: 700px; width: 100%;
    box-shadow: 0 30px 70px rgba(0,0,0,0.6);
    position: relative; max-height: 90vh; overflow-y: auto;
}
.overlay .box img { width: 100%; height: auto; border-radius: 2px; display: block; border: 1px solid var(--hairline); }
.overlay .close-btn {
    position: absolute; top: 14px; right: 16px;
    width: 34px; height: 34px;
    background: transparent; border: 1px solid var(--hairline-strong); border-radius: 2px;
    color: var(--paper); font-size: 1.5rem; cursor: pointer; transition: 0.2s;
}
.overlay .close-btn:hover { background: var(--rust); border-color: var(--rust); }
.overlay .title {
    font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.12em; text-transform: uppercase;
    color: var(--rust); margin-bottom: 16px; padding-right: 40px;
    display: inline-flex; align-items: center; gap: 0.5em;
}
.overlay .title::before { content: ''; width: 14px; height: 1px; background: var(--rust); display: inline-block; }

.location-box { text-align: center; padding: 10px; }
.location-box h3 {
    font-family: var(--font-display); font-weight: 500; color: var(--paper);
    font-size: 1.5rem; margin-bottom: 10px;
}
.location-box p { color: var(--concrete); margin-bottom: 24px; font-size: 0.9rem; }
.location-box a {
    background: transparent; border: 1px solid var(--paper); padding: 12px 28px; border-radius: 2px;
    color: var(--paper); text-decoration: none; display: inline-block; transition: 0.25s;
    font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase;
}
.location-box a:hover { background: var(--rust); border-color: var(--rust); color: #fff; }
.location-box .close-loc {
    margin-top: 18px; background: transparent; border: none; color: var(--concrete);
    font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.06em; text-transform: uppercase;
    cursor: pointer;
}
.location-box .close-loc:hover { color: var(--paper); }

/* ============================================================
   FLOOR NAV CHEVRON (Street-View-style door markers)
   ============================================================ */
.floor-nav {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.floor-nav-ring {
    position: absolute;
    top: 0; left: 50%;
    width: 46px; height: 46px;
    transform: translate(-50%, 0);
    border-radius: 50%;
    border: 1.5px solid var(--rust);
    opacity: 0;
    animation: floor-nav-pulse 2.2s ease-out infinite;
}
@keyframes floor-nav-pulse {
    0%   { opacity: 0.7; transform: translate(-50%, 0) scale(0.6); }
    80%  { opacity: 0; transform: translate(-50%, 0) scale(1.5); }
    100% { opacity: 0; transform: translate(-50%, 0) scale(1.5); }
}

.floor-nav-arrow {
    position: relative;
    width: 46px; height: 46px;
    border-radius: 50%;
    background: var(--paper);
    border: 1px solid var(--rust);
    display: flex; align-items: center; justify-content: center;
    color: var(--rust);
    font-size: 1rem;
    box-shadow: 0 10px 26px rgba(0,0,0,0.5);
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}
.floor-nav:hover .floor-nav-arrow {
    background: var(--rust);
    color: var(--paper);
    transform: scale(1.08);
}

.floor-nav-label {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
    color: var(--paper);
    background: var(--panel-raised);
    border: 1px solid var(--hairline);
    border-radius: 2px;
    padding: 5px 10px;
    opacity: 0.92;
}

/* ===== NADIR / FLOOR-CENTER BADGE ===== */
.nadir-badge {
    width: 46px; height: 46px;
    border-radius: 50%;
    background: var(--paper);
    border: 2px solid var(--rust);
    color: var(--ink);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.1rem;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    pointer-events: none;
    user-select: none;
}

/* ===== CALIBRATION DOT ===== */
.calib-dot {
    width: 22px; height: 22px;
    border-radius: 50%;
    background: var(--rust);
    border: 2px solid var(--paper);
    box-shadow: 0 0 0 6px rgba(192,107,78,0.35);
    pointer-events: none;
}

/* ===== TOAST ===== */
.app-toast {
    position: absolute;
    bottom: 92px;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    z-index: 40;
    max-width: 320px;
    text-align: center;
    background: var(--panel-raised);
    border: 1px solid var(--hairline-strong);
    border-left: 3px solid var(--rust);
    border-radius: 3px;
    padding: 12px 18px;
    font-size: 0.8rem;
    line-height: 1.4;
    color: var(--paper);
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
}
.app-toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ===== MARKER POPUP ===== */
.psv-marker-popup {
    background: var(--panel-raised) !important;
    backdrop-filter: blur(16px) !important; -webkit-backdrop-filter: blur(16px) !important;
    border: 1px solid var(--hairline) !important;
    border-radius: 3px !important;
    color: var(--paper) !important;
    padding: 18px 20px !important;
    max-width: 280px !important;
    box-shadow: 0 20px 60px rgba(0,0,0,0.8) !important;
}
.psv-marker-popup .popup-title { font-family: var(--font-display); font-weight: 500; font-size: 1.05rem; color: var(--paper); margin-bottom: 5px; }
.psv-marker-popup .popup-desc { font-size: 0.82rem; opacity: 0.75; margin: 6px 0; line-height: 1.45; }
.psv-marker-popup .popup-meta {
    font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.05em; text-transform: uppercase;
    opacity: 0.55; border-top: 1px solid var(--hairline); padding-top: 8px; margin-top: 8px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .info-panel { top: 12px; left: 12px; max-width: 250px; }
    .info-panel-head { padding: 12px 14px; }
    .info-panel-title h1 { font-size: 1rem; }
    .info-panel-body-inner { padding: 12px 14px 14px; }
    .info-grid { grid-template-columns: 1fr 1fr; gap: 10px 12px; }
    .info-field dd { font-size: 0.74rem; }

    .control-bar { bottom: 12px; padding: 6px; gap: 2px 3px; }
    .cb-btn { padding: 8px 9px; font-size: 0.6rem; }
    .cb-btn .lbl { display: none; }
    .cb-btn i { font-size: 0.9rem; }
    .room-btn { font-size: 0.55rem; padding: 6px 8px; }
    .cb-sep { height: 18px; }

    .gallery-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 12px; }
    .gallery-head h2 { font-size: 1.2rem; }
}

@media (max-width: 420px) {
    .info-panel { max-width: 210px; }
    .info-grid { grid-template-columns: 1fr 1fr; }
}