:root {
  /* Colors */
  --bg-dark: #050510;
  --bg-panel: rgba(12, 14, 28, 0.85);

  /* Iron Man */
  --cyan-tesseract: #00d2ff;
  --cyan-tesseract-glow: rgba(0, 210, 255, 0.6);
  --iron-red: #e62429;
  --iron-red-glow: rgba(230, 36, 41, 0.5);
  --iron-gold: #f0c040;
  --iron-gold-glow: rgba(240, 192, 64, 0.5);

  /* Dr Strange */
  --strange-gold: #ff9500;
  --strange-gold-glow: rgba(255, 149, 0, 0.5);
  --strange-purple: #9b59b6;
  --strange-portal: #ff6b00;
  --time-green: #00ff73;
  --time-green-glow: rgba(0, 255, 115, 0.4);

  /* Venom */
  --venom-dark: #0a0a14;
  --venom-smoke: rgba(255, 255, 255, 0.08);
  --venom-purple: rgba(120, 0, 255, 0.2);
  --venom-tendril: #1a1a2e;

  --text-main: #e8eaf0;
  --text-muted: #7a82a0;

  --br: 14px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  overflow-x: hidden;
  min-height: 100vh;
}

/* ========== ANIMATED GALAXY BACKGROUND ========== */
#galaxyCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -10;
  pointer-events: none;
  background: var(--bg-dark);
}

/* Subtle CSS nebula overlay on top of canvas for extra depth */
.bg-nebula {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: -9;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 15% 30%, rgba(120, 0, 255, 0.08), transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(255, 149, 0, 0.04), transparent 40%),
    radial-gradient(ellipse at 50% 90%, rgba(0, 100, 255, 0.04), transparent 35%);
  animation: nebulaBreathe 20s ease-in-out infinite alternate;
}

@keyframes nebulaBreathe {
  0% { opacity: 0.6; }
  100% { opacity: 1; }
}

/* ========== APP CONTAINER ========== */
.app-container {
  max-width: 820px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* ========== HEADER ========== */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  background: var(--bg-panel);
  padding: 1.5rem 2rem;
  border-radius: var(--br);
  border: 1px solid rgba(120, 0, 255, 0.15);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow:
    0 10px 40px rgba(0,0,0,0.6),
    inset 0 1px 0 rgba(255,255,255,0.05);
}

.header-titles h1 {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--iron-gold) 0%, var(--strange-gold) 40%, var(--iron-red) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.25rem;
  text-shadow: none;
}

.header-titles p {
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 600;
}

/* ========== TESSERACT CUBE PROGRESS ========== */
.progress-wrapper {
  position: relative;
  width: 100px;
  height: 100px;
  perspective: 350px;
}

.tesseract-scene {
  width: 55px;
  height: 55px;
  position: absolute;
  top: 45%;
  left: 50%;
  transform: translate(-50%, -50%);
  transform-style: preserve-3d;
  animation: tesseractSpin 10s linear infinite;
  /* energy level driven by JS via --energy (0 to 1) */
}

@keyframes tesseractSpin {
  0%   { transform: translate(-50%, -50%) rotateX(0deg) rotateY(0deg); }
  100% { transform: translate(-50%, -50%) rotateX(360deg) rotateY(360deg); }
}

.cube-face {
  position: absolute;
  width: 55px;
  height: 55px;
  border: 2px solid rgba(0, 210, 255, 0.4);
  background: rgba(0, 210, 255, 0.02);
  transition:
    border-color 0.8s ease,
    background 0.8s ease,
    box-shadow 0.8s ease;
}

.cube-face.front  { transform: translateZ(27.5px); }
.cube-face.back   { transform: rotateY(180deg) translateZ(27.5px); }
.cube-face.right  { transform: rotateY(90deg) translateZ(27.5px); }
.cube-face.left   { transform: rotateY(-90deg) translateZ(27.5px); }
.cube-face.top    { transform: rotateX(90deg) translateZ(27.5px); }
.cube-face.bottom { transform: rotateX(-90deg) translateZ(27.5px); }

/* Energy fill rising from bottom of each face */
.cube-face::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--fill-height, 0%);
  background: linear-gradient(
    to top,
    rgba(0, 210, 255, var(--energy-fill-alpha, 0.1)),
    rgba(0, 180, 255, var(--energy-fill-alpha-mid, 0.05)),
    transparent
  );
  transition: height 1s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Energy particles inside the cube (visible at higher %) */
.cube-face::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(0, 210, 255, var(--particle-alpha, 0)), transparent),
    radial-gradient(1px 1px at 60% 70%, rgba(0, 210, 255, var(--particle-alpha, 0)), transparent),
    radial-gradient(1.5px 1.5px at 40% 50%, rgba(120, 220, 255, var(--particle-alpha, 0)), transparent),
    radial-gradient(1px 1px at 80% 20%, rgba(0, 210, 255, var(--particle-alpha, 0)), transparent),
    radial-gradient(1px 1px at 10% 80%, rgba(100, 200, 255, var(--particle-alpha, 0)), transparent),
    radial-gradient(1.5px 1.5px at 70% 40%, rgba(0, 210, 255, var(--particle-alpha, 0)), transparent),
    radial-gradient(1px 1px at 50% 90%, rgba(0, 210, 255, var(--particle-alpha, 0)), transparent),
    radial-gradient(1px 1px at 30% 15%, rgba(150, 230, 255, var(--particle-alpha, 0)), transparent);
  animation: energyParticles 2s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes energyParticles {
  0% { opacity: 0.5; }
  100% { opacity: 1; }
}

/* Inner energy core — glows brighter with progress */
.tesseract-core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 210, 255, var(--core-alpha, 0.05)), transparent 70%);
  pointer-events: none;
  transition: all 0.8s ease;
  z-index: 5;
}

/* Tesseract glow aura */
.tesseract-glow {
  position: absolute;
  top: 45%;
  left: 50%;
  width: 90px;
  height: 90px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 210, 255, 0.1), transparent 70%);
  filter: blur(10px);
  animation: glowPulse 3s ease-in-out infinite;
  pointer-events: none;
  transition: all 0.8s ease;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 1; transform: translate(-50%, -50%) scale(1.2); }
}

/* Electric arcs that appear at high energy */
.tesseract-arcs {
  position: absolute;
  top: 45%;
  left: 50%;
  width: 75px;
  height: 75px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.8s ease;
  z-index: 6;
  border: 1px solid transparent;
  box-shadow:
    inset 0 0 15px rgba(0, 210, 255, 0.3),
    0 0 15px rgba(0, 210, 255, 0.2);
  animation: arcFlicker 1.5s ease-in-out infinite;
}

@keyframes arcFlicker {
  0%, 100% { opacity: var(--arc-opacity, 0); transform: translate(-50%, -50%) scale(1) rotate(0deg); }
  25% { opacity: calc(var(--arc-opacity, 0) * 1.5); transform: translate(-50%, -50%) scale(1.05) rotate(3deg); }
  50% { opacity: var(--arc-opacity, 0); transform: translate(-50%, -50%) scale(0.98) rotate(-2deg); }
  75% { opacity: calc(var(--arc-opacity, 0) * 1.3); transform: translate(-50%, -50%) scale(1.03) rotate(1deg); }
}

/* 100% complete state */
.tesseract-scene.fully-charged .cube-face {
  border-color: rgba(0, 230, 255, 1);
  background: rgba(0, 210, 255, 0.15);
  box-shadow:
    inset 0 0 25px rgba(0, 210, 255, 0.5),
    0 0 20px rgba(0, 210, 255, 0.6);
}

.tesseract-scene.fully-charged .cube-face::after {
  height: 100%;
  background: linear-gradient(
    to top,
    rgba(0, 210, 255, 0.6),
    rgba(100, 220, 255, 0.4),
    rgba(0, 210, 255, 0.3)
  );
}

/* Progress text overlay */
.progress-text {
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  font-weight: 800;
  font-size: 1rem;
  color: var(--cyan-tesseract);
  text-shadow: 0 0 10px rgba(0,210,255,0.6);
  white-space: nowrap;
  background: rgba(5, 5, 16, 0.8);
  padding: 2px 10px;
  border-radius: 6px;
  border: 1px solid rgba(0, 210, 255, 0.15);
  transition: all 0.8s ease;
}

.progress-text.full-energy {
  color: #fff;
  text-shadow: 0 0 15px rgba(0,210,255,0.9), 0 0 30px rgba(0,210,255,0.5);
  border-color: rgba(0, 210, 255, 0.5);
  background: rgba(0, 100, 150, 0.3);
}

/* ========== LEGEND ========== */
.legend-container {
  margin-bottom: 2rem;
  text-align: center;
}

.legend-title {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 0.75rem;
}

.legend-box {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  background: rgba(255,255,255,0.02);
  padding: 1rem;
  border-radius: var(--br);
  border: 1px solid rgba(255,255,255,0.06);
  justify-content: center;
  backdrop-filter: blur(10px);
}

.legend-box span {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(0,0,0,0.4);
  padding: 0.35rem 0.65rem;
  border-radius: 8px;
  white-space: nowrap;
  border: 1px solid rgba(255,255,255,0.04);
}

/* ========== TABS ========== */
.tabs {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.tab-btn {
  flex: 1;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--venom-smoke);
  color: var(--text-muted);
  padding: 1rem;
  border-radius: var(--br);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(5px);
}

.tab-btn:hover {
  background: rgba(255,255,255,0.06);
  color: #fff;
  border-color: rgba(255,255,255,0.15);
}

.tab-btn.active {
  background: rgba(230, 36, 41, 0.1);
  color: #fff;
  border-color: var(--iron-red);
  box-shadow:
    0 0 20px rgba(230, 36, 41, 0.15),
    inset 0 0 30px rgba(230, 36, 41, 0.05);
}

.tab-btn.active::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--iron-red), var(--iron-gold));
  box-shadow: 0 0 12px var(--iron-gold-glow);
}

/* ========== ACCORDION ========== */
.accordion {
  margin-bottom: 1rem;
  background: var(--venom-dark);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--br);
  overflow: hidden;
  transition: var(--transition);
}

.accordion:hover {
  border-color: rgba(255,149,0,0.15);
}

.accordion-header {
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  background: rgba(255,255,255,0.02);
  transition: var(--transition);
  user-select: none;
}

.accordion-header:hover {
  background: rgba(255,149,0,0.06);
}

.accordion-title {
  font-weight: 700;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--strange-gold), var(--strange-portal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.accordion-icon {
  color: var(--strange-gold);
  transition: transform 0.3s;
  font-size: 0.8rem;
}

.accordion.open .accordion-icon {
  transform: rotate(180deg);
}

.accordion.open {
  border-color: rgba(255,149,0,0.2);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out;
}

.accordion-inner {
  padding: 0.5rem 1.5rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* ========== SUBCATEGORIES ========== */
.subcategory-header {
  font-size: 0.8rem;
  color: var(--strange-gold);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 800;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255,149,0,0.15);
}

.subcategory-header:first-child {
  margin-top: 0;
}

/* ========== MOVIE ITEM ========== */
.movie-item {
  display: flex;
  align-items: center;
  background: rgba(10, 10, 20, 0.8);
  border: 1px solid rgba(255,255,255,0.05);
  padding: 1rem;
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.movie-item::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, transparent 60%, rgba(120, 0, 255, 0.03));
  pointer-events: none;
  transition: var(--transition);
}

.movie-item:hover {
  border-color: rgba(255,149,0,0.3);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}

.movie-item:hover::before {
  background: linear-gradient(135deg, transparent 40%, rgba(255,149,0,0.05));
}

/* Checkbox */
.checkbox {
  width: 24px;
  height: 24px;
  border: 2px solid var(--text-muted);
  border-radius: 6px;
  margin-right: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}

.movie-item.watched {
  border-color: rgba(0, 210, 255, 0.25);
  background: rgba(0, 210, 255, 0.04);
}

.movie-item.watched::before {
  background: linear-gradient(135deg, transparent 50%, rgba(0, 210, 255, 0.04));
}

.movie-item.watched .checkbox {
  background: var(--cyan-tesseract);
  border-color: var(--cyan-tesseract);
  box-shadow: 0 0 12px var(--cyan-tesseract-glow);
}

.movie-item.watched .checkbox::after {
  content: "✓";
  color: #000;
  font-weight: 800;
  font-size: 14px;
}

.movie-item.watched .movie-info h3 {
  color: var(--text-muted);
  text-decoration: line-through;
}

.movie-info {
  flex: 1;
}

.movie-info h3 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
  color: #fff;
  transition: var(--transition);
}

.movie-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Release date — real world premiere, distinct from timeline */
.movie-release {
  font-size: 0.75rem;
  color: var(--iron-gold);
  opacity: 0.7;
  margin-top: 0.2rem;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.movie-desc {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.55);
  margin-top: 0.5rem;
  line-height: 1.5;
  border-left: 2px solid var(--iron-red);
  padding-left: 0.75rem;
}

/* ========== STREAMING BADGES ========== */
.streaming-placeholder {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  border: 1px dashed var(--text-muted);
  opacity: 0.3;
  margin-left: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.streaming-badge {
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: 12px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: #fff;
  margin-left: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

/* ========== FOOTER CONTROLS ========== */
.controls {
  margin-top: 3rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-clear {
  background: transparent;
  border: 1px solid var(--iron-red);
  color: var(--iron-red);
  padding: 0.75rem 2rem;
  border-radius: 30px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
}

.btn-clear:hover {
  background: var(--iron-red);
  color: #fff;
  box-shadow: 0 0 25px rgba(230, 36, 41, 0.4);
}

.btn-export {
  background: transparent;
  border: 1px solid var(--cyan-tesseract);
  color: var(--cyan-tesseract);
  padding: 0.75rem 2rem;
  border-radius: 30px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: var(--transition);
}

.btn-export:hover {
  background: var(--cyan-tesseract);
  color: #000;
  box-shadow: 0 0 25px var(--cyan-tesseract-glow);
}

/* ========== QUICK 5 TAB ========== */
.tab-quick.active {
  background: rgba(255, 149, 0, 0.1);
  border-color: var(--strange-gold);
  box-shadow: 0 0 20px rgba(255, 149, 0, 0.15);
}

.tab-quick.active::after {
  background: linear-gradient(90deg, var(--strange-gold), var(--strange-portal));
  box-shadow: 0 0 10px var(--strange-gold-glow);
}

/* ========== OWNER TAB ========== */
.tab-owner.active {
  background: rgba(0, 210, 255, 0.08);
  border-color: var(--cyan-tesseract);
  box-shadow: 0 0 20px rgba(0, 210, 255, 0.12);
}

.tab-owner.active::after {
  background: linear-gradient(90deg, var(--cyan-tesseract), #00ff73);
  box-shadow: 0 0 10px var(--cyan-tesseract);
}

/* Owner Banner */
.owner-banner {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  margin-bottom: 1.5rem;
  background: rgba(0, 210, 255, 0.04);
  border: 1px solid rgba(0, 210, 255, 0.12);
  border-radius: var(--br);
  backdrop-filter: blur(10px);
}

.owner-banner-icon {
  font-size: 2rem;
}

.owner-banner-text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.owner-banner-text strong {
  font-size: 1rem;
  color: var(--cyan-tesseract);
}

.owner-banner-text span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ========== READ-ONLY ITEMS ========== */
.movie-item.read-only {
  cursor: default;
}

.movie-item.read-only:hover {
  transform: none;
}

.movie-item.read-only.watched {
  border-color: rgba(0, 255, 115, 0.25);
  background: rgba(0, 255, 115, 0.03);
}

.movie-item.read-only.watched .checkbox {
  background: var(--time-green);
  border-color: var(--time-green);
  box-shadow: 0 0 12px var(--time-green-glow);
}

/* ========== SCROLLBAR ========== */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
  background: rgba(120, 0, 255, 0.3);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(120, 0, 255, 0.5);
}