/* ==========================================================================
   Püskül 3D - Web
   Görsel dil: AI_muk3d/web (koyu panel + altın vurgu)
   ========================================================================== */

:root {
    --bg: #1e1f22;
    --panel: #2a2c30;
    --panel-2: #34373c;
    --border: #3f4248;
    --text: #e6e7e9;
    --text-dim: #a8acb3;
    --accent: #d6a04a;
    --accent-hover: #e0b566;
    --danger: #c05a3a;
    --ok: #3aa05c;
    --info: #5b8fd6;
    --ground: #5a5d63;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 13px;
    overflow: hidden;
}

body {
    display: flex;
    flex-direction: column;
}

/* --------------------------------------------------------------- topbar -- */

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.topbar h1 {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.2px;
}

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

.topbar-actions button {
    padding: 6px 14px;
    background: var(--panel-2);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3px;
    font-family: inherit;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.topbar-actions button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.topbar-actions button:hover:not(:disabled) {
    background: var(--accent);
    color: #1a1a1a;
    border-color: var(--accent);
}

.topbar-actions button.active {
    background: var(--accent);
    color: #1a1a1a;
    border-color: var(--accent);
}

#btn-help {
    width: 28px;
    height: 28px;
    padding: 0;
    border-radius: 50%;
    font-size: 14px;
}

.topbar-sep {
    width: 1px;
    height: 22px;
    background: var(--border);
    align-self: center;
}

/* --------------------------------------------------------------- layout -- */

.layout {
    display: flex;
    flex: 1 1 auto;
    min-height: 0;
}

.sidebar {
    width: 280px;
    flex-shrink: 0;
    background: var(--panel);
    border-right: 1px solid var(--border);
    padding: 12px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.panel {
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px 12px;
}

.panel h2 {
    margin: 0 0 8px 0;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-dim);
    font-weight: 600;
}

.panel h3 {
    margin: 12px 0 6px 0;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-dim);
    font-weight: 600;
}

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}

.panel-head h2 {
    margin: 0;
}

/* ------------------------------------------------------------- kontrol -- */

.control-group {
    margin-bottom: 12px;
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-group > label {
    display: block;
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 5px;
}

.control-group > label span {
    color: var(--accent);
    font-weight: 600;
    font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
}

.hint,
.control-group p,
.field-hint {
    margin: 3px 0 0 0;
    font-size: 10px;
    line-height: 1.45;
    color: var(--text-dim);
}

.hint-ok {
    color: var(--ok) !important;
}

.hint-warn {
    color: var(--danger) !important;
}

.radio-row {
    display: flex;
    gap: 14px;
    margin-top: 4px;
}

.radio {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text);
    cursor: pointer;
    user-select: none;
}

.radio input[type="radio"],
.checkbox-row input[type="checkbox"] {
    accent-color: var(--accent);
    margin: 0;
    cursor: pointer;
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text);
    cursor: pointer;
    user-select: none;
}

/* range */

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    margin: 6px 0 2px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 3px;
    cursor: pointer;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: var(--accent);
    border: 1px solid #1a1a1a;
    cursor: pointer;
    transition: background 0.15s;
}

input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--accent-hover);
}

input[type="range"]::-moz-range-thumb {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    border: 1px solid #1a1a1a;
    cursor: pointer;
}

input[type="range"]:focus-visible {
    border-color: var(--accent);
}

input[type="range"]:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* select + number */

select,
input[type="number"],
input[type="text"] {
    width: 100%;
    padding: 5px 6px;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 3px;
    font-size: 12px;
    font-family: inherit;
    cursor: pointer;
}

select:focus,
input[type="number"]:focus,
input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
}

select option {
    background: var(--panel-2);
    color: var(--text);
}

/* okuma satırı */

.readout {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
    font-size: 11px;
    color: var(--text-dim);
    padding: 2px 0;
}

.readout span:last-child,
.readout .val {
    color: var(--accent);
    font-weight: 600;
    font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
}

.readout-box {
    margin-top: 8px;
    padding: 8px 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
}

/* küçük butonlar */

.btn {
    padding: 6px 10px;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    font-family: inherit;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

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

.btn-sm {
    padding: 4px 9px;
    font-size: 11px;
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #1a1a1a;
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #1a1a1a;
}

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

.btn-block {
    display: block;
    width: 100%;
    margin-top: 8px;
}

/* katman paneli vurgusu */

.panel-layer {
    border-color: var(--accent);
    box-shadow: inset 0 0 0 1px rgba(214, 160, 74, 0.12);
}

.panel-layer h2 {
    color: var(--accent);
}

.panel-sub {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

.cascade-indicator {
    margin-top: 10px;
    padding: 6px 8px;
    background: rgba(58, 160, 92, 0.12);
    border-left: 3px solid var(--ok);
    border-radius: 3px;
    font-size: 10px;
    line-height: 1.45;
    color: var(--text-dim);
}

.cascade-indicator strong {
    color: var(--ok);
}

.panel-footer {
    margin-top: auto;
}

.panel-footer .hint {
    font-size: 11px;
    line-height: 1.5;
}

.panel-footer code {
    background: var(--bg);
    color: var(--accent);
    padding: 1px 4px;
    border-radius: 2px;
    font-size: 10px;
}

/* manuel hücre atama satırları */

#cell-assignment-panel {
    margin-top: 8px;
}

#cell-assignment-panel h3 {
    margin: 0;
    font-size: 11px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#manual-dropdown-container {
    margin-top: 8px;
}

.cell-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
    padding: 4px;
    border: 1px solid transparent;
    border-radius: 4px;
    transition: background 0.15s, border-color 0.15s;
}

.cell-row label {
    flex: 0 0 58px;
    font-size: 11px;
    color: var(--text-dim);
}

.cell-row select {
    flex: 1 1 auto;
    padding: 3px 5px;
    font-size: 11px;
}

.cell-row.highlight {
    background: rgba(91, 143, 214, 0.18);
    border-color: var(--info);
}

/* ------------------------------------------------------------ viewport -- */

.viewports {
    flex: 1 1 auto;
    display: flex;
    min-width: 0;
    min-height: 0;
}

.viewport {
    position: relative;
    flex: 1 1 auto;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
}

.viewport-title {
    position: absolute;
    top: 8px;
    left: 8px;
    padding: 3px 8px;
    background: rgba(0, 0, 0, 0.5);
    color: var(--text-dim);
    font-size: 11px;
    border-radius: 3px;
    z-index: 5;
    pointer-events: none;
    letter-spacing: 0.3px;
}

#canvas-container {
    position: relative;
    flex: 1 1 auto;
    min-width: 0;
    min-height: 0;
    overflow: hidden;
}

#canvas-container > canvas {
    display: block;
}

/* alt orta görünüm anahtarları */

.viewport-toggles {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
    padding: 5px 6px;
    background: rgba(0, 0, 0, 0.55);
    border: 1px solid var(--border);
    border-radius: 6px;
    z-index: 40;
}

.viewport-toggles button {
    padding: 5px 12px;
    background: transparent;
    color: var(--text-dim);
    border: 1px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    font-size: 11px;
    font-weight: 600;
    font-family: inherit;
    letter-spacing: 0.3px;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.viewport-toggles button:hover {
    color: var(--text);
    border-color: var(--border);
}

.viewport-toggles button.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #1a1a1a;
}

/* PIP */

#pip-container {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 250px;
    height: 250px;
    min-width: 150px;
    min-height: 150px;
    max-width: 600px;
    max-height: 600px;
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid var(--border);
    border-radius: 6px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    cursor: move;
    z-index: 50;
    resize: both;
    direction: rtl;
}

#pip-container canvas {
    display: block;
    width: 100%;
    height: 100%;
    direction: ltr;
}

#pip-label {
    position: absolute;
    top: 6px;
    right: 8px;
    padding: 2px 6px;
    background: rgba(0, 0, 0, 0.5);
    color: var(--text-dim);
    font-size: 10px;
    letter-spacing: 0.3px;
    border-radius: 3px;
    pointer-events: none;
    direction: ltr;
    z-index: 2;
}

/* yükleniyor */

#loading {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: var(--bg);
    color: var(--text-dim);
    z-index: 300;
}

#loading h2 {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.3px;
}

#loading p {
    margin: 0;
    font-size: 12px;
}

.hidden {
    display: none !important;
}

/* --------------------------------------------------- hücre detay paneli -- */

#cell-detail-panel {
    position: absolute;
    top: 12px;
    left: 12px;
    width: 280px;
    max-height: calc(100% - 24px);
    overflow-y: auto;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 6px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.55);
    padding: 12px;
    z-index: 60;
}

.detail-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

.detail-head h3 {
    margin: 0;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--accent);
    font-weight: 600;
}

#close-detail-panel {
    background: transparent;
    color: var(--text-dim);
    border: none;
    font-size: 18px;
    line-height: 1;
    padding: 0 4px;
    cursor: pointer;
    font-family: inherit;
}

#close-detail-panel:hover {
    color: var(--danger);
}

#cell-detail-panel h4 {
    margin: 14px 0 8px 0;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-dim);
    font-weight: 600;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

#cell-detail-panel h4:first-of-type {
    border-top: none;
    padding-top: 0;
    margin-top: 4px;
}

/* --------------------------------------------------------------- modal -- */

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.65);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    backdrop-filter: blur(2px);
}

.overlay[hidden] {
    display: none;
}

.modal {
    width: min(640px, 92vw);
    max-height: 85vh;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    overflow: hidden;
}

.modal-sm {
    width: min(360px, 92vw);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 18px;
    background: var(--panel-2);
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    margin: 0;
    font-size: 15px;
    color: var(--accent);
}

.modal-close {
    background: transparent;
    color: var(--text-dim);
    border: none;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    padding: 0 6px;
    font-family: inherit;
}

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

.modal-body {
    padding: 16px 22px 20px;
    overflow-y: auto;
    line-height: 1.6;
    color: var(--text);
}

.modal-body h3 {
    margin: 16px 0 6px;
    font-size: 13px;
    color: var(--accent);
    border-bottom: 1px solid var(--border);
    padding-bottom: 4px;
}

.modal-body p,
.modal-body ul {
    margin: 6px 0;
    font-size: 12.5px;
}

.modal-body ul {
    padding-left: 22px;
}

.modal-body li {
    margin: 3px 0;
}

.modal-body code,
.modal-body kbd {
    background: var(--bg);
    color: var(--accent);
    padding: 1px 6px;
    border-radius: 3px;
    font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
    font-size: 11.5px;
}

.modal-body strong {
    color: var(--accent);
}

.modal-body em {
    font-style: italic;
    color: var(--text-dim);
}

.modal-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 16px 18px 18px;
}

.modal-actions button {
    width: 100%;
    padding: 9px 12px;
    text-align: left;
}

/* --------------------------------------------------------------- toast -- */

.toast {
    position: fixed;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent);
    color: #1a1a1a;
    padding: 8px 16px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    z-index: 400;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    animation: toast-in 0.2s ease-out;
}

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

.toast.ok {
    background: var(--ok);
    color: #fff;
}

@keyframes toast-in {
    from { opacity: 0; transform: translate(-50%, 10px); }
    to   { opacity: 1; transform: translate(-50%, 0); }
}

/* ------------------------------------------------------------ scrollbar -- */

.sidebar::-webkit-scrollbar,
#cell-detail-panel::-webkit-scrollbar,
.modal-body::-webkit-scrollbar {
    width: 8px;
}

.sidebar::-webkit-scrollbar-track,
#cell-detail-panel::-webkit-scrollbar-track,
.modal-body::-webkit-scrollbar-track {
    background: var(--bg);
}

.sidebar::-webkit-scrollbar-thumb,
#cell-detail-panel::-webkit-scrollbar-thumb,
.modal-body::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.sidebar::-webkit-scrollbar-thumb:hover,
#cell-detail-panel::-webkit-scrollbar-thumb:hover,
.modal-body::-webkit-scrollbar-thumb:hover {
    background: var(--ground);
}