/**
 * Armor Plate Generator v2.1 - Super UI
 * Dark cyberpunk / maker theme with glassmorphism
 */

:root {
  --bg: #080b10;
  --panel: #0c1018;
  --card: #111a26;
  --card-hover: #152030;
  --text: #e8f0ff;
  --muted: #8899b0;
  --accent: #4cc9f0;
  --accent2: #7b61ff;
  --accent-hover: #7dd8f5;
  --accent-glow: rgba(76, 201, 240, 0.25);
  --warn: #ffcc00;
  --err: #ff4d6d;
  --ok: #57d163;
  --border: rgba(255, 255, 255, 0.07);
  --border-accent: rgba(76, 201, 240, 0.25);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* ═══════════════════════════════════════ */
/* LAYOUT                                 */
/* ═══════════════════════════════════════ */

.app {
  display: grid;
  grid-template-columns: 400px 1fr;
  height: 100vh;
  overflow: hidden;
}

/* Left Panel */
.panel {
  background: linear-gradient(180deg, rgba(12, 16, 24, 0.98), rgba(8, 11, 16, 0.98));
  padding: 16px;
  overflow-y: auto;
  border-right: 1px solid var(--border);
  scrollbar-width: thin;
  scrollbar-color: var(--accent) transparent;
  position: relative;
}

.panel::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 1px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent), transparent 30%, transparent 70%, var(--accent2));
  opacity: 0.4;
  pointer-events: none;
}

.panel::-webkit-scrollbar { width: 6px; }
.panel::-webkit-scrollbar-track { background: transparent; }
.panel::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent), var(--accent2));
  border-radius: 3px;
}

/* ═══════════════════════════════════════ */
/* HEADER                                 */
/* ═══════════════════════════════════════ */

h1 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  letter-spacing: -0.3px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h1::before {
  content: '⬡';
  -webkit-text-fill-color: var(--accent);
  font-size: 22px;
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

/* ═══════════════════════════════════════ */
/* CARDS                                  */
/* ═══════════════════════════════════════ */

.card {
  background: linear-gradient(135deg, rgba(17, 26, 38, 0.9), rgba(12, 18, 28, 0.9));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 12px;
  backdrop-filter: blur(8px);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 20px rgba(76, 201, 240, 0.05);
}

.card h2 {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 10px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ═══════════════════════════════════════ */
/* FORM ELEMENTS                          */
/* ═══════════════════════════════════════ */

label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 10px;
}

label span {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

input[type="number"],
input[type="text"],
select {
  width: 100%;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(8, 12, 20, 0.8);
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  transition: all var(--transition);
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow), 0 0 12px rgba(76, 201, 240, 0.1);
}

input[type="number"]:hover,
input[type="text"]:hover,
select:hover {
  border-color: rgba(76, 201, 240, 0.3);
}

input[type="number"]::-webkit-inner-spin-button { opacity: 0.4; }

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%234cc9f0' d='M6 8L2 4h8z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 32px;
}

select option {
  background-color: var(--card);
  color: var(--text);
  padding: 8px;
}

/* Grid Layouts */
.grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.grid3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}

.grid4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.grid4 label { text-align: center; }
.grid4 input { text-align: center; padding: 8px 4px; }

/* ═══════════════════════════════════════ */
/* BUTTONS                                */
/* ═══════════════════════════════════════ */

button,
.filebtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(76, 201, 240, 0.12), rgba(76, 201, 240, 0.04));
  color: var(--text);
  font-size: 12px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

button::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent, rgba(76, 201, 240, 0.1));
  opacity: 0;
  transition: opacity var(--transition);
}

button:hover::before,
.filebtn:hover::before {
  opacity: 1;
}

button:hover,
.filebtn:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(76, 201, 240, 0.15);
}

button:active,
.filebtn:active {
  transform: translateY(0);
  box-shadow: none;
}

button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.btnrow {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

.btnrow button,
.btnrow .filebtn {
  flex: 1;
}

.filebtn {
  position: relative;
  overflow: hidden;
}

.filebtn input[type="file"] {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

/* Preset Select */
#presetSelect {
  background: linear-gradient(180deg, rgba(76, 201, 240, 0.1), rgba(76, 201, 240, 0.03));
  border-color: var(--border-accent);
  font-weight: 500;
}

/* ═══════════════════════════════════════ */
/* WARNINGS PANEL                         */
/* ═══════════════════════════════════════ */

.warnings { font-size: 12px; line-height: 1.5; }

.warnings > div {
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  font-weight: 500;
}

.warn {
  color: var(--warn);
  background: rgba(255, 204, 0, 0.08);
  border-left: 3px solid var(--warn);
}

.err {
  color: var(--err);
  background: rgba(255, 77, 109, 0.08);
  border-left: 3px solid var(--err);
}

.ok {
  color: var(--ok);
  background: rgba(87, 209, 99, 0.08);
  border-left: 3px solid var(--ok);
}

.hint {
  color: var(--muted);
  font-size: 11px;
  opacity: 0.7;
}

/* ═══════════════════════════════════════ */
/* 3D VIEW                                */
/* ═══════════════════════════════════════ */

.view {
  position: relative;
  background: radial-gradient(ellipse at 40% 40%, #0e1825 0%, #060910 100%);
}

#c {
  width: 100%;
  height: 100%;
  display: block;
}

/* Info overlay */
.info-overlay {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: rgba(12, 16, 24, 0.9);
  backdrop-filter: blur(12px);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.info-overlay strong { color: var(--text); }

/* Viewport toolbar */
.view-toolbar {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  gap: 6px;
  z-index: 5;
}

.view-toolbar button {
  width: 36px;
  height: 36px;
  padding: 0;
  font-size: 16px;
  border-radius: 8px;
  background: rgba(12, 16, 24, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
}

.view-toolbar button:hover {
  border-color: var(--accent);
  background: rgba(76, 201, 240, 0.15);
}

.view-toolbar button.active {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* Footer */
.foot {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.mini {
  font-size: 10px;
  color: var(--muted);
  opacity: 0.6;
  line-height: 1.6;
}

.mini a { color: var(--accent); text-decoration: none; }
.mini a:hover { text-decoration: underline; }

/* ═══════════════════════════════════════ */
/* LOADING OVERLAY                        */
/* ═══════════════════════════════════════ */

.loading-overlay {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(12, 16, 24, 0.95);
  backdrop-filter: blur(12px);
  padding: 20px 30px;
  border-radius: var(--radius);
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 10;
  color: var(--muted);
  box-shadow: 0 0 30px rgba(76, 201, 240, 0.1);
}

.loading-overlay[hidden] { display: none; }

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ═══════════════════════════════════════ */
/* TOAST NOTIFICATIONS                    */
/* ═══════════════════════════════════════ */

.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: rgba(17, 26, 38, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  animation: toastIn 0.3s ease;
  max-width: 340px;
  pointer-events: auto;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.toast.success { border-left: 3px solid var(--ok); }
.toast.error { border-left: 3px solid var(--err); }
.toast.info { border-left: 3px solid var(--accent); }

@keyframes toastIn {
  from { transform: translateX(100%) scale(0.95); opacity: 0; }
  to { transform: translateX(0) scale(1); opacity: 1; }
}

@keyframes toastOut {
  from { transform: translateX(0) scale(1); opacity: 1; }
  to { transform: translateX(100%) scale(0.95); opacity: 0; }
}

/* Focus States */
button:focus-visible,
.filebtn:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ═══════════════════════════════════════ */
/* PRESET LIST                            */
/* ═══════════════════════════════════════ */

#myPresetsList button {
  background: transparent;
  border: none;
  color: var(--text);
  cursor: pointer;
  font-size: 12px;
}

#myPresetsList button:hover {
  background: rgba(76, 201, 240, 0.08);
}

#myPresetsList > div:last-child { border-bottom: none; }

.card .btnrow button { font-size: 11px; padding: 8px 10px; }

/* Details */
details summary {
  list-style: none;
  cursor: pointer;
  user-select: none;
  transition: color var(--transition);
}

details summary::-webkit-details-marker { display: none; }

details summary::before {
  content: '▸ ';
  font-size: 11px;
  color: var(--accent);
  transition: transform var(--transition);
  display: inline-block;
}

details[open] summary::before {
  content: '▾ ';
}

details summary:hover { color: var(--text); }

.grid4 select { font-size: 11px; padding: 4px; }

/* ═══════════════════════════════════════ */
/* PLATE SHAPE SELECTOR                   */
/* ═══════════════════════════════════════ */

.shape-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-bottom: 12px;
}

.shape-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 4px;
  background: rgba(8, 12, 20, 0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 10px;
  color: var(--muted);
  cursor: pointer;
  transition: all var(--transition);
}

.shape-btn svg {
  width: 28px;
  height: 28px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  transition: all var(--transition);
}

.shape-btn:hover {
  border-color: var(--accent);
  color: var(--text);
  background: rgba(76, 201, 240, 0.08);
}

.shape-btn:hover svg { stroke: var(--accent); }

.shape-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(76, 201, 240, 0.12);
  box-shadow: 0 0 12px var(--accent-glow);
}

.shape-btn.active svg { stroke: var(--accent); }

/* ═══════════════════════════════════════ */
/* VERZIERUNGEN / DECORATIONS             */
/* ═══════════════════════════════════════ */

.deco-library {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.deco-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 8px 4px;
  background: rgba(8, 12, 20, 0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 10px;
  cursor: pointer;
  color: var(--muted);
  transition: all var(--transition);
  text-align: center;
  line-height: 1.2;
}

.deco-chip:hover {
  border-color: var(--accent);
  color: var(--text);
  background: rgba(76, 201, 240, 0.08);
  transform: translateY(-1px);
}

.deco-chip:active { transform: translateY(0); }

/* Folder STL items */
.deco-folder-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.deco-folder-item {
  padding: 5px 10px;
  background: rgba(8, 12, 20, 0.8);
  border: 1px solid var(--border);
  border-radius: 16px;
  font-size: 11px;
  cursor: pointer;
  color: var(--muted);
  transition: all var(--transition);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.deco-folder-item:hover {
  border-color: var(--accent);
  color: var(--text);
}

/* Decoration mode buttons */
.deco-mode-btns {
  display: flex;
  gap: 4px;
}

.deco-mode-btn {
  flex: 1;
  padding: 7px 8px;
  background: rgba(8, 12, 20, 0.8);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 11px;
  cursor: pointer;
  color: var(--muted);
  text-align: center;
  transition: all var(--transition);
}

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

.deco-mode-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(76, 201, 240, 0.1);
  box-shadow: inset 0 0 8px rgba(76, 201, 240, 0.1);
}

/* Decoration list items */
.deco-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  margin-bottom: 3px;
  background: rgba(8, 12, 20, 0.6);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition);
}

.deco-item:hover { border-color: var(--muted); background: var(--card-hover); }

.deco-item.selected {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(76, 201, 240, 0.06);
}

.deco-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 8px;
  flex-shrink: 0;
  box-shadow: 0 0 6px rgba(0,0,0,0.3);
}

.deco-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.deco-touch-badge {
  font-size: 9px;
  margin-right: 6px;
  padding: 1px 5px;
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.deco-touch-badge.touching {
  background: rgba(87, 209, 99, 0.15);
  color: var(--ok);
}

.deco-touch-badge.negative {
  background: rgba(255, 77, 109, 0.15);
  color: var(--err);
}

.deco-del {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 6px;
  line-height: 1;
  border-radius: 4px;
  transition: all var(--transition);
}

.deco-del:hover {
  color: var(--err);
  background: rgba(255, 77, 109, 0.1);
}

/* Negative toggle button */
.deco-neg-btn {
  width: 100%;
  padding: 8px 12px;
  margin-top: 8px;
  background: rgba(136, 153, 176, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition);
}

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

.deco-neg-btn.is-negative {
  background: rgba(255, 77, 109, 0.12);
  border-color: var(--err);
  color: var(--err);
  box-shadow: 0 0 12px rgba(255, 77, 109, 0.1);
}

/* Snap button */
.deco-snap-btn {
  width: 100%;
  padding: 10px 12px;
  margin-top: 10px;
  background: linear-gradient(180deg, rgba(87, 209, 99, 0.15), rgba(87, 209, 99, 0.05));
  border: 1px solid rgba(87, 209, 99, 0.4);
  border-radius: var(--radius-sm);
  color: var(--ok);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition);
}

.deco-snap-btn:hover {
  background: linear-gradient(180deg, rgba(87, 209, 99, 0.25), rgba(87, 209, 99, 0.1));
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(87, 209, 99, 0.15);
}

/* Collision status */
.deco-collision-status {
  background: rgba(8, 12, 20, 0.6);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  margin-top: 10px;
  font-size: 11px;
  line-height: 1.6;
}

.dcs-touching { color: var(--ok); font-weight: 600; }
.dcs-away { color: var(--muted); }
.dcs-penetrating { color: var(--warn); font-weight: 600; }

/* Deco toggle rows */
.deco-toggle-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
}

.deco-toggle-row input[type="checkbox"] {
  accent-color: var(--accent);
  width: 15px;
  height: 15px;
  cursor: pointer;
}

.deco-toggle-row label {
  flex-direction: row;
  font-size: 12px;
  color: var(--text);
  gap: 6px;
  margin-bottom: 0;
}

/* Keyboard hint overlay */
.kb-hint-overlay {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(12, 16, 24, 0.85);
  backdrop-filter: blur(8px);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 10px;
  color: var(--muted);
  pointer-events: none;
  line-height: 1.6;
  border: 1px solid var(--border);
}

.kb-hint-overlay kbd {
  background: rgba(17, 26, 38, 0.9);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
  font-size: 10px;
  font-family: inherit;
  color: var(--accent);
}

/* ═══════════════════════════════════════ */
/* SECTION DIVIDER                        */
/* ═══════════════════════════════════════ */

.section-label {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--muted);
  opacity: 0.5;
  margin: 16px 0 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
}

/* ═══════════════════════════════════════ */
/* RESPONSIVE                             */
/* ═══════════════════════════════════════ */

@media (max-width: 900px) {
  .app {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(35vh, 1fr) auto;
    height: 100dvh;
  }

  .panel {
    order: 2;
    max-height: 65vh;
    border-right: none;
    border-top: 1px solid var(--border);
  }

  .panel::before { display: none; }

  .view {
    order: 1;
    min-height: 35vh;
  }

  button, .filebtn {
    min-height: 44px;
    padding: 12px 14px;
  }

  input[type="number"], select {
    min-height: 44px;
    font-size: 16px;
  }

  .btnrow { flex-wrap: wrap; }

  .btnrow button, .btnrow .filebtn {
    flex: 1 1 calc(50% - 4px);
  }

  .toast-container { left: 16px; right: 16px; bottom: 10px; }
  .toast { max-width: none; }

  .deco-library { grid-template-columns: repeat(4, 1fr); }
  .shape-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 500px) {
  .deco-library { grid-template-columns: repeat(3, 1fr); }
  .shape-grid { grid-template-columns: repeat(2, 1fr); }
  .grid2 { grid-template-columns: 1fr; }
}