:root {
    --bg: #0a0d13;
    --panel: rgba(16, 21, 31, 0.82);
    --border: rgba(255, 255, 255, 0.08);
    --text: #e9eef6;
    --text-dim: #94a3b8;
    --accent: #7fb2e5;
}

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

body {
    font-family: Inter, -apple-system, system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow: hidden;
    height: 100vh;
}

#canvas-container { position: fixed; inset: 0; }
#canvas-container canvas { display: block; }

.glass {
    background: var(--panel);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

/* Başlık */
.app-header {
    position: fixed;
    top: 14px; left: 16px; right: 16px;
    height: 56px;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 18px;
    background: var(--panel);
    backdrop-filter: blur(18px);
    border: 1px solid var(--border);
    border-radius: 14px;
    z-index: 20;
}

.brand { display: flex; align-items: center; gap: 12px; }

.yzo-mark {
    height: 38px; width: auto;
    display: block;
    flex-shrink: 0;
}

.brand-text { display: flex; flex-direction: column; gap: 1px; }

.wordmark {
    font-size: 9.5px; font-weight: 700;
    letter-spacing: 0.16em; text-transform: uppercase;
    background: linear-gradient(90deg, #f2903c, #b0479f, #6d5bd0);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: transparent;
}

.brand-text h1 {
    font-size: 14px; font-weight: 800; letter-spacing: 0.09em;
}

.badge {
    font-size: 10px; color: var(--text-dim);
    letter-spacing: 0.05em; text-transform: uppercase;
}

.header-actions { display: flex; gap: 8px; }

.ghost-btn {
    padding: 8px 14px;
    font-size: 12px; font-weight: 600;
    color: var(--text-dim);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 9px;
    cursor: pointer;
    transition: all 0.18s ease;
    font-family: inherit;
}

.ghost-btn:hover { color: var(--text); border-color: rgba(127, 178, 229, 0.5); }
.ghost-btn[aria-pressed="true"] { color: var(--accent); border-color: rgba(127, 178, 229, 0.45); }

/* Paneller */
.left-panel {
    position: fixed;
    top: 86px; left: 16px;
    width: 292px;
    max-height: calc(100vh - 160px);
    padding: 16px;
    overflow-y: auto;
    z-index: 15;
}

.right-panel {
    position: fixed;
    top: 86px; right: 16px;
    width: 330px;
    max-height: calc(100vh - 160px);
    padding: 16px;
    display: flex; flex-direction: column;
    z-index: 15;
}

.panel-head { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }

.panel-head h3 {
    font-size: 10.5px; font-weight: 700;
    letter-spacing: 0.13em;
    color: var(--text-dim);
    text-transform: uppercase;
}

.panel-head h2 { font-size: 17px; font-weight: 700; }

.panel-head .hint {
    font-size: 10px; color: rgba(148, 163, 184, 0.7);
    line-height: 1.4; width: 100%;
}

.margin-top { margin-top: 20px; }

/* Sistem listesi */
.system-list { display: flex; flex-direction: column; gap: 5px; margin-top: 10px; }

.system-row {
    display: flex; align-items: stretch; gap: 4px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.025);
    overflow: hidden;
    transition: all 0.18s ease;
}

.system-row:hover { background: rgba(255, 255, 255, 0.055); }

.system-row.active {
    border-color: rgba(127, 178, 229, 0.55);
    background: rgba(127, 178, 229, 0.1);
}

.system-row.hidden-layer { opacity: 0.42; }

.sys-main {
    flex: 1;
    display: flex; align-items: center; gap: 9px;
    padding: 10px 11px;
    background: none; border: none; cursor: pointer;
    color: var(--text);
    font-family: inherit; font-size: 12.5px; font-weight: 500;
    text-align: left;
}

.sys-dot {
    width: 9px; height: 9px; border-radius: 50%;
    background: var(--c, var(--accent));
    box-shadow: 0 0 9px var(--c, var(--accent));
    flex-shrink: 0;
}

.sys-name { flex: 1; }

.sys-count {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px; color: var(--text-dim);
}

.system-row.busy .sys-count::after {
    content: '…'; color: var(--accent);
}

.sys-eye {
    padding: 0 10px;
    background: none; border: none;
    border-left: 1px solid var(--border);
    color: var(--text-dim);
    cursor: pointer;
    display: grid; place-items: center;
}

.sys-eye:hover { color: var(--accent); }
.system-row.hidden-layer .sys-eye { color: rgba(148, 163, 184, 0.35); }

/* Kontroller */
.control-row { margin-top: 12px; }

.control-row label {
    display: block; font-size: 11.5px; color: var(--text-dim);
    margin-bottom: 7px;
}

.control-row.toggle {
    display: flex; align-items: center; justify-content: space-between;
}

.control-row.toggle label { margin-bottom: 0; }

.control-row input[type="range"] {
    width: 100%; height: 4px; border-radius: 2px;
    -webkit-appearance: none; appearance: none;
    background: rgba(255, 255, 255, 0.12);
    outline: none; cursor: pointer;
}

.control-row input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px; height: 14px; border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 9px rgba(127, 178, 229, 0.7);
}

.switch {
    width: 36px; height: 20px;
    -webkit-appearance: none; appearance: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px; position: relative;
    cursor: pointer; outline: none;
    transition: background 0.25s ease;
}

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

.switch::before {
    content: ''; position: absolute;
    width: 14px; height: 14px; border-radius: 50%;
    top: 3px; left: 3px; background: #fff;
    transition: transform 0.25s ease;
}

.switch:checked::before { transform: translateX(16px); background: var(--bg); }

/* Kamera */
.cam-grid {
    display: grid; grid-template-columns: 1fr 1fr 1fr;
    gap: 6px; margin-top: 10px;
}

.cam-btn {
    padding: 8px 4px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-dim);
    font-family: inherit; font-size: 11px; font-weight: 500;
    cursor: pointer; transition: all 0.18s ease;
}

.cam-btn:hover {
    background: rgba(127, 178, 229, 0.12);
    border-color: rgba(127, 178, 229, 0.45);
    color: var(--accent);
}

/* Sağ panel içeriği */
.latin {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11.5px; color: var(--accent);
    font-style: italic; margin: 4px 0 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.panel-body { overflow-y: auto; }

.info-block { margin-bottom: 16px; }

.info-block h4 {
    font-size: 10.5px; font-weight: 700;
    letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--text-dim); margin-bottom: 7px;
}

.info-block p { font-size: 12.5px; line-height: 1.6; color: #cbd5e1; }

.structure-name {
    font-size: 15px !important; font-weight: 600;
    color: #ffd766 !important;
}

.structure-side {
    font-size: 11.5px !important; color: var(--text-dim) !important;
    margin-top: 3px;
}

.spec-list { list-style: none; }

.spec-list li {
    font-size: 11.5px; color: #cbd5e1;
    padding: 6px 10px; margin-bottom: 4px;
    background: rgba(255, 255, 255, 0.03);
    border-left: 2px solid var(--accent);
    border-radius: 0 6px 6px 0;
}

.spec-list strong { color: var(--text-dim); font-weight: 500; }

/* Tooltip */
.tooltip {
    position: fixed;
    padding: 6px 12px;
    background: rgba(8, 12, 20, 0.94);
    border: 1px solid rgba(127, 178, 229, 0.4);
    border-radius: 7px;
    font-size: 12px; font-weight: 500;
    color: var(--text);
    pointer-events: none;
    opacity: 0;
    transform: translate(14px, -34px);
    transition: opacity 0.15s ease;
    z-index: 40;
    white-space: nowrap;
    max-width: 340px; overflow: hidden; text-overflow: ellipsis;
}

/* Alt bar */
.app-footer {
    position: fixed;
    bottom: 14px; left: 50%; transform: translateX(-50%);
    display: flex; align-items: center; gap: 18px;
    padding: 9px 20px;
    background: var(--panel);
    backdrop-filter: blur(18px);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 10.5px; color: var(--text-dim);
    z-index: 15;
    max-width: calc(100vw - 40px);
}

.app-footer strong { color: #cbd5e1; font-weight: 600; }

.app-footer .attrib {
    padding-left: 16px;
    border-left: 1px solid var(--border);
    opacity: 0.62; font-size: 9.5px;
}

/* Yükleme */
.loading-overlay {
    position: fixed; inset: 0;
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 18px;
    background: rgba(10, 13, 19, 0.9);
    backdrop-filter: blur(6px);
    z-index: 50;
    transition: opacity 0.4s ease;
}

.loading-overlay.hidden { opacity: 0; pointer-events: none; }

.spinner {
    width: 38px; height: 38px;
    border: 2px solid rgba(127, 178, 229, 0.2);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.85s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

#loading-text { font-size: 12.5px; color: var(--text-dim); }

@media (max-width: 1100px) {
    .left-panel { width: 250px; }
    .right-panel { width: 280px; }
    .app-footer .attrib { display: none; }
}

/* ============================================================
   MOBİL DÜZEN (<= 860px)
   Masaüstünde paneller sabit yan sütunlar; telefonda ekranın
   tamamını kaplıyorlardı. Mobilde alttan açılan çekmeceye
   dönüşüyorlar, 3B sahne tam ekran kalıyor.
   ============================================================ */
.mobile-bar { display: none; }

@media (max-width: 860px) {
    .app-header {
        top: 10px; left: 10px; right: 10px;
        height: 52px; padding: 0 12px; gap: 8px;
    }
    .yzo-mark { height: 30px; }
    .wordmark { font-size: 8px; letter-spacing: 0.12em; }
    .brand-text h1 { font-size: 12px; letter-spacing: 0.05em; white-space: nowrap; }
    .badge { display: none; }
    .header-actions { flex-shrink: 0; }
    .ghost-btn { padding: 7px 9px; font-size: 10.5px; }
    #reset-view-btn { display: none; }

    .left-panel, .right-panel {
        position: fixed;
        top: auto; bottom: 0; left: 0; right: 0;
        width: auto;
        max-height: 62vh;
        padding: 16px 16px 76px;
        border-radius: 18px 18px 0 0;
        border-bottom: none;
        transform: translateY(101%);
        transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        z-index: 30;
    }

    .left-panel.open, .right-panel.open { transform: translateY(0); }

    .left-panel::before, .right-panel::before {
        content: '';
        position: sticky; top: 0;
        display: block;
        width: 38px; height: 4px;
        margin: -6px auto 12px;
        border-radius: 2px;
        background: rgba(255, 255, 255, 0.22);
    }

    .cam-grid { grid-template-columns: repeat(3, 1fr); }

    .mobile-bar {
        display: flex;
        position: fixed;
        bottom: 0; left: 0; right: 0;
        z-index: 40;
        gap: 8px;
        padding: 8px 12px calc(8px + env(safe-area-inset-bottom));
        background: linear-gradient(to top, rgba(10, 13, 19, 0.96), rgba(10, 13, 19, 0.72));
        backdrop-filter: blur(12px);
    }

    .mob-btn {
        flex: 1;
        padding: 11px 6px;
        border-radius: 11px;
        border: 1px solid var(--border);
        background: rgba(255, 255, 255, 0.05);
        color: var(--text-dim);
        font-family: inherit;
        font-size: 12px; font-weight: 600;
        cursor: pointer;
    }

    .mob-btn.active {
        background: rgba(127, 178, 229, 0.16);
        border-color: var(--accent);
        color: var(--accent);
    }

    /* Fare yönergeleri dokunmatikte anlamsız; lisans atfı KALIR */
    .app-footer {
        bottom: 52px; left: 0; right: 0;
        transform: none;
        max-width: none;
        border-radius: 0;
        background: none;
        border: none;
        backdrop-filter: none;
        justify-content: center;
        padding: 0 12px;
    }
    .app-footer > span:not(.attrib) { display: none; }
    .app-footer .attrib {
        display: block !important;
        border: none; padding: 0;
        font-size: 8.5px; text-align: center; line-height: 1.3;
    }

    .tooltip { max-width: 62vw; white-space: normal; font-size: 11px; }
}

@media (max-width: 400px) {
    .brand-text h1 { font-size: 11px; }
    .sys-main { font-size: 11.5px; padding: 9px 10px; }
}