/* --- START OF FILE standard-model.css --- */

/* Standard Model Modal & Grid Styles */

:root {
  --sm-orange: #ff8800;
  --sm-orange-dark: #cc5500;
  --sm-bg: #111111;
  --sm-tile-bg: #1b1b1b;
  --sm-text-muted: #aaaaaa;
}

/* Button to open modal */
.standard-model-button {
  background: linear-gradient(135deg, #96009b, #96009b);
  color: white !important;
  border: none;
  border-radius: 12px;
  padding: 8px 15px;
  font-size: 14px;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 4px 0 #610064, 0 6px 15px rgba(0, 0, 0, 0.2);
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-decoration: none;
  display: inline-block;
  text-align: center;
  margin: 0 5px;
}

.standard-model-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 0 #610064, 0 8px 20px rgba(0, 0, 0, 0.3);
}

.standard-model-button:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 #610064, 0 3px 10px rgba(0, 0, 0, 0.2);
}

/* Modal Wrapper */
.standard-model-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  z-index: 2000;
  overflow: hidden; /* Popup handles scroll */
  animation: fadeIn 0.3s ease-in-out;
}

.standard-model-modal.visible {
  display: flex;
  justify-content: center;
  align-items: center;
}

.standard-model-modal.closing {
  animation: fadeOut 0.3s ease-in-out;
}

/* Main Container */
.standard-model-container {
  background: var(--sm-bg);
  border-radius: 25px;
  padding: 30px;
  width: 95%;
  max-width: 650px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  color: white;
  animation: popOut 0.4s ease-out;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: min(90vw, 880px);
}

.standard-model-modal.closing .standard-model-container {
  animation: popIn 0.3s ease-in;
}

.standard-model-container .modal-close-button {
  position: absolute;
  top: 20px;
  right: 25px;
  background: none;
  border: none;
  font-size: 28px;
  color: #666;
  cursor: pointer;
  transition: color 0.2s ease;
  z-index: 10;
}

.standard-model-container .modal-close-button:hover {
  color: #ffffff;
}

.standard-model-title {
  margin: 0 0 20px;
  font-size: 24px;
  letter-spacing: 1px;
  text-align: center;
  width: 100%;
}

/* Grid Layout */
.standard-model-grid {
  display: grid;
  grid-template-columns: auto repeat(3, 85px) 85px 85px;
  grid-template-rows: auto repeat(4, 85px);
  column-gap: 10px;
  row-gap: 10px;
  margin-top: 10px;
  justify-content: center;
  --sm-header-offset: -5px;
}

.standard-model-grid .generation-header {
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--sm-text-muted);
  text-align: center;
  position: relative;
  top: var(--sm-header-offset);
  text-transform: uppercase;
}

.standard-model-grid .generation-header:first-child {
  text-align: right;
  padding-right: 10px;
}

.standard-model-row-label {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 10px;
  font-size: 11px;
  color: var(--sm-text-muted);
  text-transform: uppercase;
}

/* Particle Tiles */
.sm-particle {
  background: var(--sm-tile-bg);
  color: #ffffff;
  border-radius: 12px;
  padding: 8px 6px;
  width: 85px;
  height: 85px;
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: inherit;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s;
}

.sm-particle:focus-visible {
  outline: 2px solid #00e5ff;
  outline-offset: 2px;
}

/* Minimal hover effect as requested */
.sm-particle:hover {
  transform: scale(1.03);
  box-shadow: 0 8px 20px rgba(0,0,0,0.6);
  z-index: 5;
  background: #252525;
}

/* Particle Colors (Headers/Symbols) */
.sm-particle-type-quark .sm-particle-symbol { color: #d480ff; }
.sm-particle-type-lepton .sm-particle-symbol { color: #ff5e5e; }
.sm-particle-type-boson .sm-particle-symbol { color: #ffae00; }
.sm-particle-type-higgs .sm-particle-symbol { color: #ff40c6; }

.sm-particle-symbol {
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 4px;
}

.sm-particle-name {
  font-size: 9px;
  letter-spacing: 0.5px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.2;
}

/* Animated Bars (Mass/Lifetime) inside Grid Tiles */
.sm-particle-bar-container {
  position: absolute;
  bottom: 8px;
  left: 10%;
  width: 80%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  overflow: hidden;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.sm-particle.show-bars .sm-particle-bar-container {
  opacity: 1;
}

.sm-particle-bar {
  height: 100%;
  background: var(--sm-orange);
  width: 0%;
  border-radius: 2px;
  transition: width 0.35s ease-out;
}

/* View Mode Controls */
.sm-view-controls {
  display: flex;
  gap: 10px;
  margin-top: 25px;
  background: #1a1a1a;
  padding: 4px;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.1);
}

.sm-view-btn {
  background: none;
  border: none;
  color: #888;
  padding: 6px 16px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.sm-view-btn:hover {
  color: #fff;
}

.sm-view-btn.active {
  background: #333;
  color: var(--sm-orange);
}

/* --- INNER POPUP OVERLAY --- */

.sm-popup-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: transparent;
  z-index: 100;
  display: none; /* toggled by JS */
  justify-content: center;
  align-items: center;
  transform: scale(0.95);
  opacity: 0;
}

.sm-popup-overlay.active {
  display: flex;
  animation: smAtomFadeIn 0.3s forwards, smAtomScaleIn 0.3s forwards;
}

.sm-popup-overlay.closing {
  display: flex;
  animation: smAtomFadeOut 0.3s forwards, smAtomScaleOut 0.3s forwards;
}

.sm-popup-content {
  background: #181818;
  width: 90%;
  max-width: 480px;
  border-radius: 16px;
  border: 1px solid #333;
  box-shadow: 0 20px 50px rgba(0,0,0,0.8);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  animation: slideUp 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

.sm-popup-close {
  position: absolute;
  top: 10px;
  right: 15px;
  background: none;
  border: none;
  color: #666;
  font-size: 24px;
  cursor: pointer;
  z-index: 10;
}
.sm-popup-close:hover { color: white; }

/* Popup Tabs */
.sm-popup-tabs {
  display: flex;
  border-bottom: 1px solid #333;
  background: #222;
}

.sm-popup-tab {
  flex: 1;
  padding: 12px;
  background: none;
  border: none;
  color: #888;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.sm-popup-tab:hover { color: #ccc; }
.sm-popup-tab.active {
  color: var(--sm-orange);
  border-bottom-color: var(--sm-orange);
  background: #2a2a2a;
}

/* Popup Body */
.sm-tab-content {
  padding: 20px;
  display: none;
}
.sm-tab-content.active { display: block; }

/* Overview Tab Styling */
.sm-popup-header {
  text-align: center;
  margin-bottom: 20px;
}

.sm-popup-symbol {
  font-size: 40px;
  font-weight: bold;
  color: white;
  margin-bottom: 5px;
  line-height: 1;
}

.sm-popup-name {
  font-size: 18px;
  color: #fff;
  font-weight: 600;
}

.sm-popup-meta {
  font-size: 12px;
  color: var(--sm-orange);
  text-transform: uppercase;
  margin-top: 4px;
}

.sm-popup-desc {
  font-size: 13px;
  color: #ccc;
  line-height: 1.5;
  text-align: center;
  margin-bottom: 20px;
}

/* Popup Bars */
.sm-popup-stats {
  margin-bottom: 20px;
  background: #222;
  padding: 15px;
  border-radius: 12px;
}

.sm-stat-row {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
  font-size: 12px;
}

.sm-stat-row:last-child { margin-bottom: 0; }

.sm-stat-label {
  width: 70px;
  color: #aaa;
}

.sm-stat-track {
  flex: 1;
  height: 6px;
  background: #333;
  border-radius: 3px;
  overflow: hidden;
}

.sm-stat-bar {
  height: 100%;
  background: var(--sm-orange);
  width: 0%;
  transition: width 0.5s ease-out;
}

/* Badges Grid (Quantum Numbers) */
.sm-section-title {
  font-size: 11px;
  text-transform: uppercase;
  color: #666;
  margin-bottom: 8px;
  font-weight: bold;
}

.sm-badges-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 20px;
}

.sm-badge {
  background: #222;
  border: 1px solid #333;
  border-radius: 6px;
  padding: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.sm-badge span:first-child { color: #888; font-size: 11px; }
.sm-badge span:last-child { color: #fff; font-size: 12px; font-weight: bold; }

/* Tooltip implementation for badges/pills */
.sm-tooltip-trigger:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: #000;
  color: #fff;
  padding: 5px 10px;
  border-radius: 4px;
  font-size: 10px;
  white-space: nowrap;
  pointer-events: none;
  margin-bottom: 5px;
  z-index: 200;
  box-shadow: 0 2px 5px rgba(0,0,0,0.5);
}

/* Interactions Pills */
.sm-forces-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.sm-force-pill {
  font-size: 10px;
  padding: 4px 10px;
  border-radius: 10px;
  background: #222;
  color: #555;
  border: 1px solid #333;
  position: relative;
}

.sm-force-pill.active {
  background: rgba(255, 136, 0, 0.15);
  color: var(--sm-orange);
  border-color: var(--sm-orange-dark);
}

/* FEYNMAN TAB SVG */
.feynman-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 0;
}

.feynman-svg {
  width: 240px;
  height: 180px;
  /* No background, purely svg */
}

/* SVG Line Styles */
.f-line-fermion {
  stroke: white;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
}

.f-line-boson {
  stroke: var(--sm-orange);
  stroke-width: 2;
  fill: none;
  stroke-dasharray: 4, 3; /* dashed for bosons usually */
}

.f-line-z {
  stroke: var(--sm-orange);
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
}

.f-line-higgs {
  stroke: #ffffff;
  stroke-width: 2;
  fill: none;
  stroke-dasharray: 4, 3; /* Higgs dashed style */
  stroke-linecap: round;
}

.f-line-boson.gluon {
  stroke-dasharray: 0;
  /* Simplified coil look via path in JS, or just solid for simplicity here */
}

.f-line-gluon {
  stroke: var(--sm-orange);
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
}

/* Animated Elements */
.f-particle-dot {
  fill: white;
  r: 3;
}

  .f-vertex-flash {
    fill: var(--sm-orange);
    opacity: 0;
  }

  .f-label {
    fill: #e5e5e5;
    font-size: 12px;
    font-family: Arial, sans-serif;
    user-select: none;
  }

/* CSS Keyframes for synchronization */
/* 2s cycle:
   0-50%: Particle approaches
   50%: Collision/Interaction
   50-100%: Result leaves
*/

@keyframes particleIn {
  0% { offset-distance: 0%; opacity: 1; }
  45% { opacity: 1; }
  50% { offset-distance: 100%; opacity: 0; }
  100% { offset-distance: 100%; opacity: 0; }
}

@keyframes particleOut {
  0% { offset-distance: 0%; opacity: 0; }
  50% { offset-distance: 0%; opacity: 0; }
  55% { opacity: 1; }
  100% { offset-distance: 100%; opacity: 1; }
}

@keyframes vertexFlash {
  0%, 45% { r: 0; opacity: 0; }
  50% { r: 8px; opacity: 1; }
  60% { r: 12px; opacity: 0; }
  100% { r: 0; opacity: 0; }
}

.anim-in {
  animation: particleIn 2.5s linear infinite;
}

.anim-out {
  animation: particleOut 2.5s linear infinite;
}

.anim-flash {
  animation: vertexFlash 2.5s linear infinite;
}

.feynman-desc {
  margin-top: 15px;
  font-size: 13px;
  color: #ccc;
  text-align: center;
  line-height: 1.5;
  padding: 0 10px;
}

/* Animations for Modal */
@keyframes smAtomFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes smAtomFadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

@keyframes smAtomScaleIn {
  from { transform: scale(0.8); }
  to { transform: scale(1); }
}

@keyframes smAtomScaleOut {
  from { transform: scale(1); }
  to { transform: scale(0.8); }
}

/* Media Queries */
@media screen and (max-width: 768px) {
  .standard-model-grid {
    grid-template-columns: auto repeat(3, 70px) 70px 70px;
    grid-template-rows: auto repeat(4, 70px);
    row-gap: 6px;
    column-gap: 6px;
  }
  .sm-particle { width: 70px; height: 70px; }
  .sm-particle-symbol { font-size: 18px; }
  .standard-model-row-label, .standard-model-grid .generation-header { display: none; }
  .standard-model-grid { display: flex; flex-wrap: wrap; justify-content: center; width: 100%; }
}