/* =====================================================
   PORTAL — Premium AR Canvas Arayüzü
   ===================================================== */

.portal-app {
  padding: 3rem 0 7rem;
  background: linear-gradient(180deg, var(--bone) 0%, var(--paper) 100%);
}
.portal-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 3rem;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ========== SIDEBAR ========== */
.portal-sidebar {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  padding: 2rem;
  background: var(--paper);
  border: 1px solid var(--line);
  position: sticky;
  top: calc(var(--header-h) + 20px);
  align-self: start;
  max-height: calc(100vh - var(--header-h) - 40px);
  overflow-y: auto;
}
.portal-sidebar::-webkit-scrollbar { width: 4px; }
.portal-sidebar::-webkit-scrollbar-thumb { background: var(--stone-light); }
.portal-sidebar::-webkit-scrollbar-track { background: transparent; }

.portal-step {
  border-bottom: 1px solid var(--line);
  padding-bottom: 1.75rem;
}
.portal-step:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.step-num {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--ember);
  font-size: 0.95rem;
  display: block;
  margin-bottom: 0.5rem;
}
.portal-step h3 {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  color: var(--obsidian);
}

/* ========== UPLOAD ZONE ========== */
.upload-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2.5rem 1rem;
  border: 1px dashed var(--stone-light);
  cursor: pointer;
  transition: all 0.4s var(--ease-elegant);
  text-align: center;
  background: linear-gradient(135deg, transparent 0%, rgba(184, 131, 90, 0.04) 100%);
}
.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--ember);
  background: rgba(184, 131, 90, 0.08);
  transform: translateY(-2px);
}
.upload-zone svg { color: var(--stone-warm); margin-bottom: 1rem; }
.upload-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--obsidian);
}
.upload-hint {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--stone-warm);
  margin-top: 0.4rem;
}

.uploaded-preview {
  display: none;
  margin-top: 0.75rem;
  padding: 0.75rem;
  border: 1px solid var(--line);
  font-size: 0.78rem;
  align-items: center;
  gap: 0.75rem;
  justify-content: space-between;
}
.uploaded-preview.show { display: flex; }
.uploaded-preview .check {
  width: 24px;
  height: 24px;
  background: var(--ember);
  color: var(--paper);
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 0.85rem;
  flex-shrink: 0;
}
.uploaded-preview span { flex: 1; color: var(--stone-warm); }
.uploaded-preview button {
  background: none;
  border: none;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--stone-warm);
  cursor: pointer;
  text-decoration: underline;
}

/* ========== MODEL LIST ========== */
.model-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}
.model-card {
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 0.5rem 0.5rem 0.75rem;
  cursor: pointer;
  transition: all 0.4s var(--ease-elegant);
  text-align: left;
  font-family: inherit;
}
.model-card:hover { border-color: var(--obsidian); }
.model-card.active {
  border-color: var(--ember);
  background: rgba(184, 131, 90, 0.05);
}
.model-thumb {
  aspect-ratio: 1/1;
  background:
    radial-gradient(ellipse at 50% 70%, rgba(255, 145, 60, 0.3) 0%, transparent 60%),
    linear-gradient(180deg, var(--charcoal) 0%, var(--obsidian) 100%);
  background-size: cover;
  background-position: center;
  margin-bottom: 0.5rem;
  position: relative;
}
.model-thumb::after {
  content: '';
  position: absolute;
  inset: 25% 28% 35% 28%;
  border: 1px solid rgba(184, 131, 90, 0.4);
}
.model-card span {
  font-family: var(--font-display);
  font-size: 0.95rem;
  display: block;
  padding-left: 0.25rem;
}

/* ========== CONTROL HINTS ========== */
.control-hint {
  margin-bottom: 1rem;
}
.control-hint p {
  font-size: 0.8rem;
  color: var(--stone-warm);
  margin: 0.4rem 0;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}
.control-hint p::before {
  content: '·';
  color: var(--ember);
  font-weight: bold;
  font-size: 1.4rem;
  line-height: 0.7;
}

.opacity-control { margin-top: 1.25rem; }
.opacity-control label {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  color: var(--stone-warm);
}
.opacity-control label span:last-child { color: var(--ember-deep); }
.opacity-control input {
  width: 100%;
  accent-color: var(--ember);
  cursor: pointer;
}

.btn-mini {
  margin-top: 1rem;
  background: transparent;
  border: 1px solid var(--line);
  padding: 0.7rem 1rem;
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.4s var(--ease-elegant);
  width: 100%;
  color: var(--obsidian);
}
.btn-mini:hover {
  background: var(--obsidian);
  color: var(--paper);
  border-color: var(--obsidian);
}

.btn-block { width: 100%; justify-content: center; padding: 1rem 1.5rem; }
.btn[disabled], .btn-mini[disabled] {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

.portal-step.actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ========== STAGE (CANVAS) ========== */
.portal-stage {
  display: flex;
  flex-direction: column;
}
.stage-frame {
  position: relative;
  aspect-ratio: 16/10;
  background: var(--obsidian);
  overflow: hidden;
  border: 1px solid var(--obsidian);
  box-shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.4);
}
#portalCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
  touch-action: none;
}
#portalCanvas.dragging { cursor: grabbing; }

.stage-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--bone);
  text-align: center;
  padding: 2rem;
  background: linear-gradient(135deg, var(--charcoal) 0%, var(--obsidian) 100%);
  z-index: 2;
  pointer-events: none;
  transition: opacity 0.6s var(--ease-elegant);
}
.stage-placeholder.hidden {
  opacity: 0;
  pointer-events: none;
}
.stage-placeholder h4 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  margin: 1.5rem 0 0.75rem;
  color: var(--bone);
}
.stage-placeholder p {
  font-size: 0.92rem;
  opacity: 0.6;
  line-height: 1.7;
  max-width: 420px;
}
.ph-decor { display: flex; gap: 0.6rem; }
.ph-decor span {
  width: 12px;
  height: 12px;
  border: 1px solid var(--ember);
  display: block;
}
.ph-decor span:nth-child(2) {
  background: var(--ember);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.stage-meta {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.25rem;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--stone-warm);
  flex-wrap: wrap;
}
.meta-tag::before {
  content: '— ';
  color: var(--ember);
}

/* ========== MODAL ========== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.modal.open { display: flex; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(14, 14, 12, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.modal-panel {
  position: relative;
  background: var(--paper);
  max-width: 480px;
  width: 100%;
  padding: 3rem 2.5rem;
  z-index: 2;
  border: 1px solid var(--line);
  animation: rise 0.6s var(--ease-elegant);
  max-height: 90vh;
  overflow-y: auto;
}
.modal-panel h3 {
  margin: 0.75rem 0 0.5rem;
  font-size: 1.6rem;
}
.modal-panel > p {
  opacity: 0.7;
  font-size: 0.92rem;
}
.modal-close {
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  color: var(--stone-warm);
  transition: color 0.3s;
  line-height: 1;
}
.modal-close:hover { color: var(--obsidian); }

.modal-panel form {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: 1.5rem;
}
.modal-panel input,
.modal-panel textarea {
  border: 1px solid var(--line);
  padding: 0.95rem 1.1rem;
  font-family: var(--font-body);
  font-size: 0.92rem;
  background: var(--paper);
  color: var(--obsidian);
  transition: border-color 0.3s;
  border-radius: 0;
}
.modal-panel input:focus,
.modal-panel textarea:focus {
  outline: none;
  border-color: var(--ember);
}
.modal-panel textarea {
  resize: vertical;
  font-family: inherit;
  min-height: 80px;
}
.modal-success {
  text-align: center;
  padding: 2rem 0;
}
.modal-success h4 {
  font-family: var(--font-display);
  font-size: 1.6rem;
  text-transform: none;
  letter-spacing: 0;
  color: var(--ember-deep);
  margin-bottom: 0.75rem;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .portal-layout { grid-template-columns: 1fr; gap: 2rem; }
  .portal-sidebar {
    position: relative;
    top: 0;
    max-height: none;
    order: 2;
  }
  .portal-stage { order: 1; }
  .stage-frame { aspect-ratio: 4/3; }
}

@media (max-width: 640px) {
  .portal-sidebar { padding: 1.5rem; }
  .modal-panel { padding: 2rem 1.5rem; }
  .stage-frame { aspect-ratio: 1/1; }
}