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

:root {
  --nav-height: 52px;
  --nav-bg: rgba(10, 10, 10, 0.88);
  --nav-border: rgba(255, 255, 255, 0.08);
  --bg-gradient-1: #0a0a0a;
  --bg-gradient-2: #1a1a1a;
  --bg-gradient-3: #0f0f0f;
  --machine-bg-1: rgba(255, 255, 255, 0.06);
  --machine-bg-2: rgba(255, 255, 255, 0.02);
  --machine-bg-3: rgba(255, 255, 255, 0.04);
  --machine-border: rgba(255, 255, 255, 0.1);
  --container-bg: rgba(0, 0, 0, 0.4);
  --container-border: rgba(255, 255, 255, 0.08);
  --glass-reflection: rgba(255, 255, 255, 0.04);
  --text-primary: #fff;
  --text-secondary: rgba(255, 255, 255, 0.5);
  --text-muted: rgba(255, 255, 255, 0.3);
  --text-faint: rgba(255, 255, 255, 0.2);
  --ball-bg-1: #fff;
  --ball-bg-2: #e0e0e0;
  --ball-bg-3: #bbb;
  --ball-text: #111;
  --ball-empty-bg-1: #2a2a2a;
  --ball-empty-bg-2: #1a1a1a;
  --ball-empty-bg-3: #111;
  --ball-empty-text: #444;
  --ball-rolling-bg-1: #666;
  --ball-rolling-bg-2: #555;
  --ball-rolling-bg-3: #444;
  --ball-revealed-bg-1: #fff;
  --ball-revealed-bg-2: #f0f0f0;
  --ball-revealed-bg-3: #ddd;
  --ball-revealed-text: #000;
  --progress-bg: rgba(255, 255, 255, 0.1);
  --progress-bar: #fff;
  --btn-bg: rgba(255, 255, 255, 0.05);
  --btn-border: rgba(255, 255, 255, 0.2);
  --btn-hover-bg: rgba(255, 255, 255, 0.1);
  --btn-hover-border: rgba(255, 255, 255, 0.3);
  --btn-active-bg: #fff;
  --btn-active-text: #000;
  --info-bg: rgba(255, 255, 255, 0.03);
  --info-border: rgba(255, 255, 255, 0.05);
  --shadow-color: rgba(0, 0, 0, 0.4);
  --glow-color: rgba(255, 255, 255, 0.2);
  --accent-color: #fff;
  --accent-hover: #e0e0e0;
  --bg-primary: #0a0a0a;
  --bg-secondary: rgba(255, 255, 255, 0.05);
  --border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] {
  --nav-bg: rgba(245, 245, 245, 0.92);
  --nav-border: rgba(0, 0, 0, 0.08);
  --bg-gradient-1: #f5f5f5;
  --bg-gradient-2: #e0e0e0;
  --bg-gradient-3: #ececec;
  --machine-bg-1: rgba(0, 0, 0, 0.06);
  --machine-bg-2: rgba(0, 0, 0, 0.02);
  --machine-bg-3: rgba(0, 0, 0, 0.04);
  --machine-border: rgba(0, 0, 0, 0.1);
  --container-bg: rgba(255, 255, 255, 0.8);
  --container-border: rgba(0, 0, 0, 0.08);
  --glass-reflection: rgba(255, 255, 255, 0.6);
  --text-primary: #111;
  --text-secondary: rgba(0, 0, 0, 0.6);
  --text-muted: rgba(0, 0, 0, 0.4);
  --text-faint: rgba(0, 0, 0, 0.2);
  --ball-bg-1: #333;
  --ball-bg-2: #444;
  --ball-bg-3: #555;
  --ball-text: #fff;
  --ball-empty-bg-1: #e0e0e0;
  --ball-empty-bg-2: #f0f0f0;
  --ball-empty-bg-3: #fafafa;
  --ball-empty-text: #bbb;
  --ball-rolling-bg-1: #aaa;
  --ball-rolling-bg-2: #bbb;
  --ball-rolling-bg-3: #ccc;
  --ball-revealed-bg-1: #333;
  --ball-revealed-bg-2: #444;
  --ball-revealed-bg-3: #555;
  --ball-revealed-text: #fff;
  --progress-bg: rgba(0, 0, 0, 0.1);
  --progress-bar: #333;
  --btn-bg: rgba(0, 0, 0, 0.05);
  --btn-border: rgba(0, 0, 0, 0.2);
  --btn-hover-bg: rgba(0, 0, 0, 0.1);
  --btn-hover-border: rgba(0, 0, 0, 0.3);
  --btn-active-bg: #333;
  --btn-active-text: #fff;
  --info-bg: rgba(0, 0, 0, 0.03);
  --info-border: rgba(0, 0, 0, 0.05);
  --shadow-color: rgba(0, 0, 0, 0.15);
  --glow-color: rgba(0, 0, 0, 0.1);
  --accent-color: #333;
  --accent-hover: #555;
  --bg-primary: #f5f5f5;
  --bg-secondary: rgba(0, 0, 0, 0.05);
  --border-color: rgba(0, 0, 0, 0.1);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--bg-gradient-1) 0%, var(--bg-gradient-2) 50%, var(--bg-gradient-3) 100%);
  color: var(--text-primary);
  padding: calc(var(--nav-height) + 24px) 20px 24px;
  transition: background 0.3s ease, color 0.3s ease;
}

/* --------------------------------
   Navigation
-------------------------------- */
.app-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--nav-bg);
  border-bottom: 1px solid var(--nav-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 1000;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.nav-brand {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-primary);
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text-secondary);
  padding: 6px 10px;
  border-radius: 6px;
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--btn-hover-bg);
}

.nav-link.active {
  color: var(--text-primary);
  font-weight: 500;
}

/* Theme toggle inside nav */
.theme-toggle {
  background: transparent;
  border: 1px solid var(--btn-border);
  border-radius: 8px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.85rem;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--btn-hover-bg);
  border-color: var(--btn-hover-border);
}

.theme-toggle:active {
  transform: scale(0.95);
}

/* --------------------------------
   Layout
-------------------------------- */
.container {
  max-width: 420px;
  width: 100%;
  margin: 0 auto;
  text-align: center;
}

/* Glass machine container */
.machine {
  background: linear-gradient(180deg,
    var(--machine-bg-1) 0%,
    var(--machine-bg-2) 50%,
    var(--machine-bg-3) 100%);
  border: 1px solid var(--machine-border);
  border-radius: 20px;
  padding: 30px 20px;
  backdrop-filter: blur(10px);
  box-shadow:
    0 8px 32px var(--shadow-color),
    inset 0 1px 0 var(--glass-reflection);
}

.machine::before {
  display: none;
}

/* Ball container with glass effect */
.ball-container {
  background: var(--container-bg);
  border: 1px solid var(--container-border);
  border-radius: 16px;
  padding: 25px 15px;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
}

/* Glass reflection */
.ball-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(180deg, var(--glass-reflection) 0%, transparent 100%);
  border-radius: 16px 16px 0 0;
  pointer-events: none;
}

.number-display {
  display: flex;
  justify-content: center;
  gap: 10px;
  position: relative;
  z-index: 1;
}

/* 3D Balls */
.ball {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
  font-size: 1.4rem;
  font-weight: 600;
  background: linear-gradient(145deg, var(--ball-bg-1) 0%, var(--ball-bg-2) 50%, var(--ball-bg-3) 100%);
  color: var(--ball-text);
  position: relative;
  transition: all 0.3s ease;
  box-shadow:
    0 4px 15px var(--shadow-color),
    inset 0 -3px 6px rgba(0, 0, 0, 0.15),
    inset 0 3px 6px rgba(255, 255, 255, 0.9);
}

/* Ball shine/reflection */
.ball::before {
  content: '';
  position: absolute;
  top: 7px;
  left: 12px;
  width: 12px;
  height: 8px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  transform: rotate(-25deg);
}

.ball.empty {
  background: linear-gradient(145deg, var(--ball-empty-bg-1) 0%, var(--ball-empty-bg-2) 50%, var(--ball-empty-bg-3) 100%);
  color: var(--ball-empty-text);
  box-shadow:
    0 4px 15px var(--shadow-color),
    inset 0 -2px 4px rgba(0, 0, 0, 0.4),
    inset 0 2px 4px rgba(255, 255, 255, 0.05);
}

.ball.empty::before {
  background: rgba(255, 255, 255, 0.08);
}

/* Rolling - gray balls floating */
.ball.rolling {
  animation: float 0.5s ease-in-out infinite;
  background: linear-gradient(145deg, var(--ball-rolling-bg-1) 0%, var(--ball-rolling-bg-2) 50%, var(--ball-rolling-bg-3) 100%);
  color: #222;
  box-shadow:
    0 4px 20px var(--glow-color),
    inset 0 -3px 6px rgba(0, 0, 0, 0.3),
    inset 0 3px 6px rgba(255, 255, 255, 0.4);
}

.ball.rolling::before {
  background: rgba(255, 255, 255, 0.5);
}

/* Revealed - contrasting balls */
.ball.revealed {
  animation: popUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  background: linear-gradient(145deg, var(--ball-revealed-bg-1) 0%, var(--ball-revealed-bg-2) 50%, var(--ball-revealed-bg-3) 100%);
  color: var(--ball-revealed-text);
  box-shadow:
    0 4px 20px var(--glow-color),
    inset 0 -3px 6px rgba(0, 0, 0, 0.1),
    inset 0 3px 6px rgba(255, 255, 255, 0.9);
}

.ball.revealed::before {
  background: rgba(255, 255, 255, 0.6);
}

@keyframes float {
  0%, 100% { transform: translateY(-3px) rotate(-3deg); }
  50% { transform: translateY(3px) rotate(3deg); }
}

@keyframes popUp {
  0% { transform: scale(0.6) translateY(15px); opacity: 0; }
  60% { transform: scale(1.08) translateY(-3px); }
  100% { transform: scale(1) translateY(0); opacity: 1; }
}

/* Status */
.led-display {
  padding: 12px 0;
  margin-bottom: 15px;
}

.led-text {
  color: var(--text-secondary);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
  text-transform: uppercase;
  transition: color 0.3s ease;
}

.led-text.processing {
  animation: pulse 1s ease-in-out infinite;
}

.led-text.error {
  color: #ff4757;
  animation: blink 0.5s ease-in-out 3;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

/* Progress bar */
.progress-container {
  width: 100%;
  height: 3px;
  background: var(--progress-bg);
  border-radius: 2px;
  margin-bottom: 20px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.progress-container.visible {
  opacity: 1;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: var(--progress-bar);
  border-radius: 2px;
  transition: width 0.3s ease;
  box-shadow: 0 0 8px var(--glow-color);
}

/* Generate button */
.generate-btn {
  width: 100%;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 16px 30px;
  border: 1px solid var(--btn-border);
  border-radius: 10px;
  background: var(--btn-bg);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  backdrop-filter: blur(5px);
}

.generate-btn:hover:not(:disabled) {
  background: var(--btn-hover-bg);
  border-color: var(--btn-hover-border);
}

.generate-btn:active:not(:disabled) {
  background: var(--btn-active-bg);
  color: var(--btn-active-text);
}

.generate-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Hide decorations */
.decorations {
  display: none;
}

/* --------------------------------
   Form elements
-------------------------------- */
.format-selector {
  text-align: center;
  margin-bottom: 1rem;
}

.format-selector label {
  color: var(--text-secondary);
  font-size: 0.75rem;
  margin-right: 0.5rem;
  letter-spacing: 0.05em;
}

.format-select {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
  -webkit-appearance: none;
  appearance: none;
}

.format-select:hover {
  border-color: var(--btn-hover-border);
  background: var(--btn-hover-bg);
}

.format-select:focus {
  outline: none;
  border-color: var(--btn-hover-border);
}

/* Export buttons */
.export-actions {
  display: none;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 1rem;
}

.export-btn {
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  color: var(--text-primary);
  padding: 0.65rem 1.4rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all 0.2s ease;
}

.export-btn:hover {
  background: var(--btn-hover-bg);
  border-color: var(--btn-hover-border);
  transform: translateY(-2px);
}

.export-btn:active {
  transform: translateY(0);
}

/* Custom RSS section */
.rss-details {
  margin-top: 1.25rem;
}

.rss-details summary {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  user-select: none;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.2s ease;
}

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

.rss-body {
  margin-top: 1rem;
}

.rss-body > p {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.rss-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
  transition: border-color 0.2s ease;
}

.rss-input:focus {
  outline: none;
  border-color: var(--btn-hover-border);
}

.rss-actions {
  display: flex;
  gap: 0.5rem;
}

.rss-actions button {
  padding: 0.5rem 1rem;
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  border-radius: 8px;
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: all 0.2s ease;
}

.rss-actions button:hover {
  background: var(--btn-hover-bg);
  border-color: var(--btn-hover-border);
}

.rss-actions button:first-child {
  flex: 1;
}

/* --------------------------------
   Info section
-------------------------------- */
.info-section {
  margin-top: 20px;
  padding: 18px;
  background: var(--info-bg);
  border-radius: 12px;
  border: 1px solid var(--info-border);
}

.info-section h3 {
  color: var(--text-secondary);
  font-size: 0.6rem;
  font-weight: 400;
  margin-bottom: 8px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.info-section p {
  color: var(--text-muted);
  font-size: 0.75rem;
  line-height: 1.7;
  font-weight: 300;
}

.info-link {
  display: block;
  margin-top: 0.75rem;
  font-size: 0.7rem;
  color: var(--text-secondary);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

.info-link:hover {
  color: var(--text-primary);
}

/* Footer */
footer {
  margin-top: 20px;
  color: var(--text-faint);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-align: center;
}

/* --------------------------------
   Stats page
-------------------------------- */
.stats-container {
  max-width: 900px;
  margin: 0 auto;
}

.stats-header {
  text-align: center;
  margin-bottom: 2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0.5rem 0;
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.chart-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
}

.chart-title {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  text-align: center;
  color: var(--text-secondary);
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 200px;
  gap: 0.5rem;
}

.bar {
  flex: 1;
  background: linear-gradient(to top, var(--accent-color), var(--accent-hover));
  border-radius: 3px 3px 0 0;
  position: relative;
  transition: opacity 0.3s ease;
  min-height: 10px;
  opacity: 0.6;
}

.bar:hover {
  opacity: 1;
}

.bar-label {
  position: absolute;
  bottom: -22px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.65rem;
  color: var(--text-secondary);
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
}

.bar-value {
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.6rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.popular-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.popular-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: var(--info-bg);
  border: 1px solid var(--info-border);
  border-radius: 8px;
  margin-bottom: 0.5rem;
  transition: background 0.2s ease, transform 0.2s ease;
}

.popular-item:hover {
  transform: translateX(4px);
  background: var(--btn-hover-bg);
}

.popular-number {
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
}

.popular-count {
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  color: var(--text-secondary);
  padding: 0.2rem 0.65rem;
  border-radius: 20px;
  font-size: 0.7rem;
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
}

.loading {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.error-message {
  text-align: center;
  padding: 2rem;
  color: #ff4757;
  background: rgba(255, 71, 87, 0.08);
  border: 1px solid rgba(255, 71, 87, 0.25);
  border-radius: 12px;
  font-size: 0.85rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  transition: color 0.2s ease;
}

.back-link:hover {
  color: var(--text-primary);
}

/* --------------------------------
   Accuracy page
-------------------------------- */
.accuracy-container {
  max-width: 900px;
  margin: 0 auto;
}

.accuracy-header {
  text-align: center;
  margin-bottom: 2rem;
}

.accuracy-header h1 {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.accuracy-header p {
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.timeline {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  margin-bottom: 2rem;
}

.timeline h2 {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.draw-item {
  border-left: 1px solid var(--border-color);
  padding-left: 1.25rem;
  margin-bottom: 2rem;
  position: relative;
}

.draw-item::before {
  content: '';
  position: absolute;
  left: -4px;
  top: 5px;
  width: 7px;
  height: 7px;
  background: var(--text-muted);
  border-radius: 50%;
}

.draw-date {
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.actual-number {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
  padding: 0.5rem 0.75rem;
  background: var(--info-bg);
  border: 1px solid var(--info-border);
  border-radius: 8px;
  display: inline-block;
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
}

.draw-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.predictions {
  margin-top: 0.5rem;
}

.prediction-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0.75rem;
  margin: 0.4rem 0;
  background: var(--info-bg);
  border: 1px solid var(--info-border);
  border-radius: 8px;
}

.prediction-number {
  font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
}

.match-badge {
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.match-badge.exact { background: rgba(16, 185, 129, 0.12); color: #10b981; border: 1px solid rgba(16, 185, 129, 0.25); }
.match-badge.high  { background: rgba(59, 130, 246, 0.12); color: #60a5fa; border: 1px solid rgba(59, 130, 246, 0.25); }
.match-badge.medium { background: rgba(245, 158, 11, 0.1); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.25); }
.match-badge.low   { background: rgba(239, 68, 68, 0.1); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.25); }
.match-badge.none  { background: var(--btn-bg); color: var(--text-muted); border: 1px solid var(--btn-border); }

.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
}

.empty-state p {
  font-size: 0.85rem;
  line-height: 1.7;
  margin-top: 0.5rem;
}

/* --------------------------------
   Offline page
-------------------------------- */
.offline-content {
  text-align: center;
  padding: 2rem;
}

.offline-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.offline-content > p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.offline-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.offline-retry {
  display: inline-block;
  margin-top: 2rem;
  background: var(--btn-bg);
  border: 1px solid var(--btn-border);
  color: var(--text-primary);
  padding: 0.75rem 2rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: all 0.2s ease;
}

.offline-retry:hover {
  background: var(--btn-hover-bg);
  border-color: var(--btn-hover-border);
}

/* --------------------------------
   Responsive
-------------------------------- */
@media (max-width: 600px) {
  .nav-brand {
    display: none;
  }
}

@media (max-width: 480px) {
  body {
    padding-left: 12px;
    padding-right: 12px;
  }

  .container {
    max-width: 100%;
  }

  .machine {
    padding: 25px 15px;
    border-radius: 16px;
  }

  .ball-container {
    padding: 20px 12px;
    border-radius: 12px;
  }

  .ball {
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
  }

  .ball::before {
    top: 6px;
    left: 10px;
    width: 10px;
    height: 6px;
  }

  .number-display {
    gap: 8px;
  }

  .generate-btn {
    font-size: 0.75rem;
    padding: 14px 24px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .stat-value {
    font-size: 2rem;
  }

  .export-btn {
    font-size: 0.7rem;
    padding: 0.55rem 1rem;
  }
}

@media (max-width: 360px) {
  .ball {
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }

  .ball::before {
    top: 5px;
    left: 8px;
    width: 8px;
    height: 5px;
  }

  .number-display {
    gap: 6px;
  }
}

/* Touch devices */
@media (hover: none) {
  .generate-btn:hover:not(:disabled) {
    background: var(--btn-bg);
    border-color: var(--btn-border);
  }

  .generate-btn:active:not(:disabled) {
    background: var(--btn-active-bg);
    color: var(--btn-active-text);
  }
}

/* Smooth theme transitions */
.app-nav,
.machine,
.ball-container,
.led-display,
.ball,
.generate-btn,
.info-section,
.stat-card,
.chart-container,
.popular-item,
.timeline,
.prediction-item {
  transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}