/* ===== ARCADE THEME - FLASHCARDS PRO ===== */

:root {
  --bg-dark: #0a0a0a;
  --bg-card: #111111;
  --bg-input: #0d0d0d;
  
  --neon-pink: #ff00ff;
  --neon-cyan: #00ffff;
  --neon-green: #39ff14;
  --neon-yellow: #ffe800;
  --neon-orange: #ff6b00;
  --neon-red: #ff3131;
  --neon-purple: #bd00ff;
  
  --text-white: #ffffff;
  --text-gray: #888888;
  --text-dark: #444444;
  
  --font-pixel: 'Press Start 2P', cursive;
  --font-display: 'Orbitron', sans-serif;
  --font-body: 'Rajdhani', sans-serif;
}

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

body {
  font-family: var(--font-body);
  background: var(--bg-dark);
  color: var(--text-white);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== BACKGROUND EFFECTS ===== */
.scanlines {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1000;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.1) 0px,
    rgba(0, 0, 0, 0.1) 1px,
    transparent 1px,
    transparent 2px
  );
  opacity: 0.3;
}

.grid-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(255, 0, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 0, 255, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
  z-index: 0;
}

/* ===== REGISTER LAYOUT ===== */
.register-container {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

.brand-panel {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: linear-gradient(135deg, rgba(255, 0, 255, 0.1) 0%, transparent 50%);
  border-right: 1px solid rgba(255, 0, 255, 0.2);
}

.brand-content {
  max-width: 400px;
}

.logo-glow {
  margin-bottom: 3rem;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--neon-cyan);
  text-shadow: 
    0 0 10px var(--neon-cyan),
    0 0 20px var(--neon-cyan),
    0 0 40px var(--neon-cyan);
  letter-spacing: 4px;
}

.logo-text span {
  color: var(--neon-pink);
  text-shadow: 
    0 0 10px var(--neon-pink),
    0 0 20px var(--neon-pink),
    0 0 40px var(--neon-pink);
}

.logo-sub {
  font-family: var(--font-pixel);
  font-size: 0.6rem;
  color: var(--neon-yellow);
  letter-spacing: 6px;
  margin-top: 0.5rem;
  text-shadow: 0 0 10px var(--neon-yellow);
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-gray);
  letter-spacing: 1px;
}

.feature-icon {
  color: var(--neon-green);
  font-family: var(--font-pixel);
  font-size: 0.6rem;
  text-shadow: 0 0 10px var(--neon-green);
}

.arcade-decoration {
  margin-top: 4rem;
}

.coin-slot {
  display: inline-block;
  padding: 0.75rem 2rem;
  border: 2px solid var(--neon-yellow);
  font-family: var(--font-pixel);
  font-size: 0.5rem;
  color: var(--neon-yellow);
  text-shadow: 0 0 5px var(--neon-yellow);
  animation: blink 1.5s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ===== FORM PANEL ===== */
.form-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
}

.form-wrapper {
  width: 100%;
  max-width: 420px;
}

.form-step {
  display: none;
}

.form-step.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

.btn-back {
  background: none;
  border: none;
  color: var(--text-gray);
  font-family: var(--font-body);
  font-size: 0.9rem;
  cursor: pointer;
  margin-bottom: 1.5rem;
  transition: color 0.2s;
}

.btn-back:hover {
  color: var(--neon-cyan);
}

.step-header {
  margin-bottom: 2rem;
}

.step-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 900;
  color: var(--bg-card);
  -webkit-text-stroke: 1px var(--neon-pink);
  letter-spacing: 2px;
}

.step-header h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-white);
  margin-top: 0.5rem;
  letter-spacing: 2px;
}

.step-header p {
  color: var(--text-gray);
  font-size: 0.95rem;
  margin-top: 0.25rem;
}

/* ===== INPUTS ===== */
.input-group {
  margin-bottom: 1.5rem;
}

.input-group label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-gray);
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
}

.input-wrapper {
  position: relative;
}

.input-wrapper input {
  width: 100%;
  padding: 1rem 1.25rem;
  background: var(--bg-input);
  border: 2px solid var(--text-dark);
  color: var(--text-white);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.3s;
}

.input-wrapper input:focus {
  outline: none;
  border-color: var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
}

.input-wrapper input::placeholder {
  color: var(--text-dark);
}

/* ===== BUTTONS ===== */
.btn-next {
  width: 100%;
  padding: 1rem 2rem;
  background: transparent;
  border: 2px solid var(--neon-pink);
  color: var(--neon-pink);
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 2px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  transition: all 0.3s;
  margin-top: 1rem;
}

.btn-next:hover {
  background: var(--neon-pink);
  color: #000;
  box-shadow: 0 0 30px var(--neon-pink);
}

.btn-arrow {
  font-family: var(--font-pixel);
  font-size: 0.6rem;
}

.divider-line {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.5rem 0;
  color: var(--text-dark);
  font-size: 0.8rem;
}

.divider-line::before,
.divider-line::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--text-dark);
}

.btn-google {
  width: 100%;
  padding: 0.875rem 1.5rem;
  background: var(--bg-input);
  border: 2px solid var(--text-dark);
  color: var(--text-white);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  transition: all 0.3s;
}

.btn-google:hover {
  border-color: var(--text-gray);
  background: #1a1a1a;
}

.login-link {
  text-align: center;
  margin-top: 2rem;
  color: var(--text-gray);
  font-size: 0.9rem;
}

.login-link a {
  color: var(--neon-cyan);
  text-decoration: none;
  font-weight: 600;
}

.login-link a:hover {
  text-shadow: 0 0 10px var(--neon-cyan);
}

/* ===== LANGUAGE GRID ===== */
.language-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  max-height: 350px;
  overflow-y: auto;
  padding-right: 0.5rem;
  margin-bottom: 1rem;
}

.language-grid::-webkit-scrollbar {
  width: 4px;
}

.language-grid::-webkit-scrollbar-thumb {
  background: var(--neon-pink);
}

.lang-card {
  cursor: pointer;
}

.lang-card input {
  display: none;
}

.lang-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.75rem 0.5rem;
  background: var(--bg-input);
  border: 2px solid var(--text-dark);
  transition: all 0.2s;
}

.lang-card input:checked + .lang-content {
  border-color: var(--neon-cyan);
  background: rgba(0, 255, 255, 0.1);
  box-shadow: 0 0 15px rgba(0, 255, 255, 0.3);
}

.lang-card:hover .lang-content {
  border-color: var(--text-gray);
}

.lang-flag {
  font-size: 1.5rem;
  margin-bottom: 0.25rem;
}

.lang-name {
  font-family: var(--font-display);
  font-size: 0.55rem;
  font-weight: 600;
  color: var(--text-gray);
  letter-spacing: 1px;
}

.lang-card input:checked + .lang-content .lang-name {
  color: var(--neon-cyan);
}

/* ===== GOAL OPTIONS ===== */
.goal-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.goal-card {
  cursor: pointer;
}

.goal-card input {
  display: none;
}

.goal-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem 1rem;
  background: var(--bg-input);
  border: 2px solid var(--text-dark);
  transition: all 0.2s;
  position: relative;
}

.goal-card input:checked + .goal-content {
  border-color: var(--neon-green);
  background: rgba(57, 255, 20, 0.1);
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.3);
}

.goal-card.featured .goal-content {
  border-color: var(--neon-yellow);
}

.goal-badge {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.25rem 0.5rem;
  background: var(--neon-yellow);
  color: #000;
  font-family: var(--font-pixel);
  font-size: 0.4rem;
  letter-spacing: 1px;
}

.goal-time {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  color: var(--text-white);
}

.goal-unit {
  font-family: var(--font-display);
  font-size: 0.65rem;
  color: var(--text-gray);
  letter-spacing: 2px;
}

.goal-desc {
  font-size: 0.8rem;
  color: var(--text-dark);
  margin-top: 0.5rem;
}

.goal-card input:checked + .goal-content .goal-time {
  color: var(--neon-green);
  text-shadow: 0 0 10px var(--neon-green);
}

/* ===== START BUTTON ===== */
.btn-start {
  width: 100%;
  padding: 1.25rem 2rem;
  background: linear-gradient(135deg, var(--neon-pink) 0%, var(--neon-purple) 100%);
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.btn-start::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}

.btn-start:hover::before {
  left: 100%;
}

.btn-start:hover {
  box-shadow: 0 0 40px var(--neon-pink);
  transform: scale(1.02);
}

.btn-start-text {
  font-family: var(--font-pixel);
  font-size: 0.9rem;
  color: #fff;
  text-shadow: 2px 2px 0 rgba(0,0,0,0.3);
}

.btn-start-sub {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: rgba(255,255,255,0.7);
  margin-top: 0.25rem;
}

/* ===== PROGRESS DOTS ===== */
.progress-dots {
  display: flex;
  gap: 0.75rem;
  margin-top: 2rem;
}

.dot {
  width: 10px;
  height: 10px;
  background: var(--text-dark);
  transition: all 0.3s;
}

.dot.active {
  background: var(--neon-pink);
  box-shadow: 0 0 10px var(--neon-pink);
}

/* ===== LOADING ===== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.loading-content {
  text-align: center;
}

.loading-bar {
  width: 200px;
  height: 4px;
  background: var(--text-dark);
  margin-bottom: 1rem;
  overflow: hidden;
}

.loading-progress {
  width: 30%;
  height: 100%;
  background: var(--neon-cyan);
  animation: loading 1s ease-in-out infinite;
}

@keyframes loading {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}

.loading-content p {
  font-family: var(--font-pixel);
  font-size: 0.6rem;
  color: var(--neon-cyan);
  letter-spacing: 4px;
}

/* ===== LOGIN PAGE ===== */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
  position: relative;
  z-index: 1;
}

.login-box {
  width: 100%;
  max-width: 400px;
  padding: 3rem;
  background: var(--bg-card);
  border: 2px solid var(--neon-pink);
  box-shadow: 0 0 40px rgba(255, 0, 255, 0.2);
  position: relative;
}

.login-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--neon-pink), var(--neon-cyan), var(--neon-purple));
}

.login-logo {
  text-align: center;
  margin-bottom: 2rem;
}

.login-logo h1 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--neon-cyan);
  text-shadow: 0 0 20px var(--neon-cyan);
  letter-spacing: 3px;
}

.login-logo p {
  font-family: var(--font-pixel);
  font-size: 0.5rem;
  color: var(--text-gray);
  margin-top: 0.5rem;
  letter-spacing: 4px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .register-container {
    flex-direction: column;
  }
  
  .brand-panel {
    padding: 2rem;
    border-right: none;
    border-bottom: 1px solid rgba(255, 0, 255, 0.2);
  }
  
  .brand-content {
    text-align: center;
  }
  
  .feature-list {
    display: none;
  }
  
  .arcade-decoration {
    display: none;
  }
  
  .logo-text {
    font-size: 1.75rem;
  }
}

@media (max-width: 500px) {
  .language-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .goal-options {
    grid-template-columns: 1fr;
  }
}

/* ===== APP LAYOUT ===== */
.app-container {
  display: flex;
  min-height: 100vh;
}

.app-sidebar {
  width: 80px;
  background: var(--bg-card);
  border-right: 1px solid var(--text-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem 0;
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  z-index: 100;
}

.app-sidebar-logo {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 900;
  color: var(--neon-cyan);
  text-shadow: 0 0 10px var(--neon-cyan);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  letter-spacing: 3px;
  margin-bottom: 2rem;
}

.app-nav {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.app-nav-btn {
  width: 50px;
  height: 50px;
  background: transparent;
  border: 2px solid transparent;
  color: var(--text-gray);
  font-size: 1.25rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  position: relative;
}

.app-nav-btn:hover {
  color: var(--neon-cyan);
  border-color: var(--text-dark);
}

.app-nav-btn.active {
  color: var(--neon-pink);
  border-color: var(--neon-pink);
  background: rgba(255, 0, 255, 0.1);
}

.app-nav-btn.active::before {
  content: '';
  position: absolute;
  left: -2px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 20px;
  background: var(--neon-pink);
  box-shadow: 0 0 10px var(--neon-pink);
}

.app-main {
  flex: 1;
  margin-left: 80px;
  padding: 2rem;
  position: relative;
  z-index: 1;
}

/* ===== DASHBOARD ===== */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 2rem;
}

.dashboard-welcome h1 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 0.25rem;
}

.dashboard-welcome p {
  color: var(--text-gray);
  font-size: 0.95rem;
}

.dashboard-streak {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background: linear-gradient(135deg, rgba(255, 107, 0, 0.2) 0%, rgba(255, 0, 0, 0.1) 100%);
  border: 2px solid var(--neon-orange);
  box-shadow: 0 0 20px rgba(255, 107, 0, 0.2);
}

.streak-flame {
  font-size: 2rem;
}

.streak-info {
  text-align: right;
}

.streak-count {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  color: var(--neon-orange);
  text-shadow: 0 0 10px var(--neon-orange);
}

.streak-label {
  font-family: var(--font-display);
  font-size: 0.65rem;
  color: var(--text-gray);
  letter-spacing: 2px;
}

/* ===== STATS GRID ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--text-dark);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
}

.stat-card.cyan::before { background: var(--neon-cyan); }
.stat-card.pink::before { background: var(--neon-pink); }
.stat-card.green::before { background: var(--neon-green); }
.stat-card.yellow::before { background: var(--neon-yellow); }

.stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 900;
  color: var(--text-white);
}

.stat-card.cyan .stat-value { color: var(--neon-cyan); text-shadow: 0 0 10px var(--neon-cyan); }
.stat-card.pink .stat-value { color: var(--neon-pink); text-shadow: 0 0 10px var(--neon-pink); }
.stat-card.green .stat-value { color: var(--neon-green); text-shadow: 0 0 10px var(--neon-green); }
.stat-card.yellow .stat-value { color: var(--neon-yellow); text-shadow: 0 0 10px var(--neon-yellow); }

.stat-label {
  font-family: var(--font-display);
  font-size: 0.65rem;
  color: var(--text-gray);
  letter-spacing: 2px;
  margin-top: 0.5rem;
}

/* ===== FLASHCARD STUDY ===== */
.study-container {
  max-width: 700px;
  margin: 0 auto;
}

.study-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.study-deck-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: 1px;
}

.study-progress-text {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--text-gray);
}

.study-progress-bar {
  height: 6px;
  background: var(--text-dark);
  margin-bottom: 2rem;
  overflow: hidden;
}

.study-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-pink));
  box-shadow: 0 0 10px var(--neon-cyan);
  transition: width 0.3s;
}

.flashcard-area {
  perspective: 1000px;
  margin-bottom: 2rem;
}

.flashcard {
  width: 100%;
  min-height: 300px;
  background: var(--bg-card);
  border: 3px solid var(--neon-cyan);
  box-shadow: 0 0 30px rgba(0, 255, 255, 0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
}

.flashcard:hover {
  border-color: var(--neon-pink);
  box-shadow: 0 0 40px rgba(255, 0, 255, 0.3);
}

.flashcard-label {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-family: var(--font-pixel);
  font-size: 0.5rem;
  color: var(--text-dark);
  letter-spacing: 2px;
}

.flashcard-text {
  font-family: var(--font-body);
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-white);
  text-align: center;
}

.flashcard-audio-btn {
  margin-top: 1.5rem;
  padding: 0.75rem 1.5rem;
  background: linear-gradient(135deg, var(--neon-pink) 0%, var(--neon-purple) 100%);
  border: none;
  color: #fff;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s;
}

.flashcard-audio-btn:hover {
  box-shadow: 0 0 20px var(--neon-pink);
  transform: scale(1.05);
}

.flashcard-hint {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--text-gray);
}

.study-controls {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.study-btn {
  padding: 1rem 2rem;
  background: transparent;
  border: 2px solid var(--text-dark);
  color: var(--text-gray);
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.2s;
}

.study-btn:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
}

.study-btn.primary {
  border-color: var(--neon-pink);
  color: var(--neon-pink);
}

.study-btn.primary:hover {
  background: var(--neon-pink);
  color: #000;
  box-shadow: 0 0 20px var(--neon-pink);
}

/* ===== RATING BUTTONS ===== */
.rating-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.rating-btn {
  padding: 1rem;
  background: var(--bg-input);
  border: 2px solid var(--text-dark);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  transition: all 0.2s;
}

.rating-btn:hover {
  transform: translateY(-2px);
}

.rating-btn.again { border-color: var(--neon-red); }
.rating-btn.again:hover { background: rgba(255, 49, 49, 0.2); box-shadow: 0 0 15px rgba(255, 49, 49, 0.3); }

.rating-btn.hard { border-color: var(--neon-orange); }
.rating-btn.hard:hover { background: rgba(255, 107, 0, 0.2); box-shadow: 0 0 15px rgba(255, 107, 0, 0.3); }

.rating-btn.good { border-color: var(--neon-green); }
.rating-btn.good:hover { background: rgba(57, 255, 20, 0.2); box-shadow: 0 0 15px rgba(57, 255, 20, 0.3); }

.rating-btn.easy { border-color: var(--neon-cyan); }
.rating-btn.easy:hover { background: rgba(0, 255, 255, 0.2); box-shadow: 0 0 15px rgba(0, 255, 255, 0.3); }

.rating-label {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.rating-btn.again .rating-label { color: var(--neon-red); }
.rating-btn.hard .rating-label { color: var(--neon-orange); }
.rating-btn.good .rating-label { color: var(--neon-green); }
.rating-btn.easy .rating-label { color: var(--neon-cyan); }

.rating-time {
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: var(--text-dark);
}

/* ===== DECKS GRID ===== */
.decks-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.decks-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
}

.btn-create-deck {
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: 2px solid var(--neon-green);
  color: var(--neon-green);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-create-deck:hover {
  background: var(--neon-green);
  color: #000;
  box-shadow: 0 0 20px var(--neon-green);
}

.decks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.deck-card {
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--text-dark);
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}

.deck-card:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
  transform: translateY(-2px);
}

.deck-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.deck-card-title {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-white);
}

.deck-card-lang {
  font-family: var(--font-pixel);
  font-size: 0.5rem;
  color: var(--neon-cyan);
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--neon-cyan);
}

.deck-card-stats {
  display: flex;
  gap: 1.5rem;
}

.deck-stat {
  display: flex;
  flex-direction: column;
}

.deck-stat-value {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
}

.deck-stat-label {
  font-size: 0.7rem;
  color: var(--text-gray);
}

.deck-card-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--text-dark);
}

.deck-action-btn {
  flex: 1;
  padding: 0.5rem;
  background: transparent;
  border: 1px solid var(--text-dark);
  color: var(--text-gray);
  font-family: var(--font-display);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.2s;
}

.deck-action-btn:hover {
  border-color: var(--neon-cyan);
  color: var(--neon-cyan);
}

.deck-action-btn.primary {
  border-color: var(--neon-pink);
  color: var(--neon-pink);
}

.deck-action-btn.primary:hover {
  background: var(--neon-pink);
  color: #000;
}

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 768px) {
  .app-sidebar {
    width: 100%;
    height: 70px;
    flex-direction: row;
    bottom: 0;
    top: auto;
    padding: 0 1rem;
    justify-content: space-around;
  }
  
  .app-sidebar-logo {
    display: none;
  }
  
  .app-nav {
    flex-direction: row;
  }
  
  .app-nav-btn.active::before {
    left: 50%;
    top: -2px;
    transform: translateX(-50%);
    width: 20px;
    height: 4px;
  }
  
  .app-main {
    margin-left: 0;
    margin-bottom: 70px;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .dashboard-header {
    flex-direction: column;
    gap: 1rem;
  }
  
  .dashboard-streak {
    width: 100%;
    justify-content: space-between;
  }
}