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

html {
  overflow-x: hidden;
  overflow-y: auto;
}

:root {
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #1c1c1e;

  --glass-bg: rgba(28, 28, 30, 0.68);
  --glass-bg-secondary: rgba(44, 44, 46, 0.64);
  --glass-bg-tertiary: rgba(58, 58, 60, 0.52);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-border-secondary: rgba(255, 255, 255, 0.12);

  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.37);
  --glass-shadow-hover: 0 16px 64px rgba(0, 0, 0, 0.5);
  --glass-shadow-active: 0 4px 16px rgba(0, 0, 0, 0.25);

  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.68);
  --text-tertiary: rgba(255, 255, 255, 0.44);
  --text-muted: rgba(255, 255, 255, 0.24);

  --accent-blue: #007aff;
  --accent-blue-hover: #0056cc;
  --accent-teal: #30d158;
  --accent-teal-hover: #28cd4f;
  --accent-orange: #ff9500;
  --accent-orange-hover: #e6850e;
  --accent-red: #ff3b30;
  --accent-red-hover: #d70015;
  --accent-purple: #af52de;
  --accent-purple-hover: #9542be;

  --gradient-primary: linear-gradient(
    135deg,
    var(--accent-blue) 0%,
    var(--accent-purple) 100%
  );
  --gradient-secondary: linear-gradient(
    135deg,
    var(--accent-teal) 0%,
    var(--accent-blue) 100%
  );
  --gradient-warning: linear-gradient(
    135deg,
    var(--accent-orange) 0%,
    #ffcc02 100%
  );
  --gradient-danger: linear-gradient(
    135deg,
    var(--accent-red) 0%,
    #ff6b6b 100%
  );

  --border-radius: 20px;
  --border-radius-large: 24px;
  --border-radius-small: 12px;
  --backdrop-filter: blur(20px);
  --backdrop-filter-strong: blur(40px);

  --transition-fast: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-smooth: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  --transition-bounce: all 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Montserrat",
    system-ui, sans-serif;
  background: radial-gradient(
      ellipse at top left,
      rgba(0, 122, 255, 0.15) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse at top right,
      rgba(175, 82, 222, 0.12) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse at bottom left,
      rgba(48, 209, 88, 0.08) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse at bottom right,
      rgba(255, 149, 0, 0.1) 0%,
      transparent 50%
    ),
    linear-gradient(
      135deg,
      var(--bg-primary) 0%,
      var(--bg-secondary) 50%,
      var(--bg-tertiary) 100%
    );
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  text-align: center;
  margin-bottom: 20px;
  padding: 30px 0;
}

header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
  letter-spacing: -0.025em;
  filter: drop-shadow(0 0 20px rgba(0, 122, 255, 0.3));
}

.subtitle {
  font-size: 1.3rem;
  color: var(--text-secondary);
  font-weight: 400;
  opacity: 0.9;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}

.stage-navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 40px;
  padding: 0 10px;
  position: relative;
  min-height: 80px;
}

.nav-arrow {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: none;
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  border: 1px solid var(--glass-border);
  color: var(--accent-blue);
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 600;
  box-shadow: var(--glass-shadow);
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.nav-arrow::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition-fast);
  border-radius: inherit;
}

.nav-arrow:hover {
  transform: scale(1.05);
  box-shadow: var(--glass-shadow-hover);
  border-color: rgba(0, 122, 255, 0.4);
}

.nav-arrow:hover::before {
  opacity: 0.1;
}

.nav-arrow:active {
  transform: scale(0.95);
  box-shadow: var(--glass-shadow-active);
}

.nav-arrow:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  transform: none;
  background: var(--glass-bg-secondary);
  border-color: var(--glass-border-secondary);
}

.nav-arrow:disabled:hover {
  transform: none;
  box-shadow: var(--glass-shadow);
}

.nav-arrow:disabled::before {
  display: none;
}

.arrow-icon {
  transition: var(--transition-fast);
}

.nav-arrow:hover .arrow-icon {
  transform: translateX(1px);
}

.nav-arrow-left:hover .arrow-icon {
  transform: translateX(-1px);
}

.stage-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.stage-dots {
  display: flex;
  gap: 12px;
  align-items: center;
}

.stage-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--glass-bg-secondary);
  border: 2px solid var(--glass-border);
  transition: var(--transition-smooth);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.stage-dot::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: var(--accent-blue);
  border-radius: 50%;
  transition: var(--transition-smooth);
  transform: translate(-50%, -50%);
}

.stage-dot.active {
  background: var(--glass-bg);
  border-color: var(--accent-blue);
  box-shadow: 0 0 20px rgba(0, 122, 255, 0.4);
}

.stage-dot.active::before {
  width: 6px;
  height: 6px;
}

.stage-dot.completed {
  background: var(--glass-bg);
  border-color: var(--accent-teal);
  box-shadow: 0 0 20px rgba(48, 209, 88, 0.4);
}

.stage-dot.completed::before {
  width: 6px;
  height: 6px;
  background: var(--accent-teal);
}

.stage-title {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
  letter-spacing: -0.015em;
  transition: var(--transition-smooth);
  opacity: 1;
  transform: translateY(0);
  min-height: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stages-container {
  display: flex;
  width: 400%;
  transition: transform 0.8s cubic-bezier(0.23, 1, 0.32, 1);
  position: relative;
  overflow: visible;
}

.stage {
  width: 25%;
  flex-shrink: 0;
  padding: 0 20px;
  opacity: 0.2;
  transform: translateX(0);
  transition: var(--transition-bounce);
  pointer-events: none;
}

.stage.active {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
  z-index: 10;
}

.stage.prev {
  opacity: 0.4;
  transform: translateX(0);
  pointer-events: none;
  z-index: 5;
}

.stage.next {
  opacity: 0.4;
  transform: translateX(0);
  pointer-events: none;
  z-index: 5;
}

.stage-card {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  border-radius: var(--border-radius-large);
  padding: 32px;
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  min-height: 400px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.stage-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
}

.stage-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition-smooth);
  border-radius: inherit;
  z-index: -1;
}

.stage.active .stage-card {
  box-shadow: var(--glass-shadow-hover);
  border-color: rgba(0, 122, 255, 0.2);
  transform: translateY(-2px);
}

.stage.active .stage-card::after {
  opacity: 0.03;
}

.stage.prev .stage-card,
.stage.next .stage-card {
  box-shadow: var(--glass-shadow-active);
  border-color: var(--glass-border-secondary);
}

.stage-card h2 {
  font-size: 1.8rem;
  margin-bottom: 25px;
  color: var(--text-primary);
  font-weight: 700;
  text-align: center;
  letter-spacing: -0.02em;
}

.process-section {
  display: flex;
  flex-direction: column;
  gap: 40px;
  align-items: center;
}

.process-summary {
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--border-radius);
  padding: 30px;
  border: 1px solid var(--glass-border);
  width: 100%;
  max-width: 400px;
}

.summary-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.summary-item:last-child {
  border-bottom: none;
}

.summary-label {
  font-weight: 600;
  color: var(--text-secondary);
}

.summary-value {
  font-weight: 500;
  color: var(--text-primary);
  text-align: right;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card,
.stage-card {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  border-radius: var(--border-radius);
  padding: 35px;
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before,
.stage-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
}

.card h2,
.stage-card h2 {
  font-size: 1.6rem;
  margin-bottom: 24px;
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.file-upload-section {
  margin-top: 20px;
}

.file-drop-zone {
  border: 2px dashed rgba(0, 122, 255, 0.25);
  border-radius: var(--border-radius-large);
  padding: 60px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  background: var(--glass-bg-secondary);
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  position: relative;
  overflow: hidden;
  box-shadow: var(--glass-shadow);
}

.file-drop-zone::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  border-radius: inherit;
}

.file-drop-zone:hover,
.file-drop-zone.drag-over {
  border-color: var(--accent-blue);
  background: rgba(0, 122, 255, 0.08);
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 8px 32px rgba(0, 122, 255, 0.15),
    0 0 0 1px rgba(0, 122, 255, 0.1), var(--glass-shadow);
}

.file-drop-zone:hover::before,
.file-drop-zone.drag-over::before {
  opacity: 0.05;
}

.drop-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
  color: var(--accent-blue);
  font-weight: 600;
  opacity: 0.8;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.file-drop-zone:hover .drop-icon {
  color: var(--accent-teal);
  transform: scale(1.1);
  opacity: 1;
}

.file-drop-zone p {
  margin: 8px 0;
  color: var(--text-secondary);
  font-weight: 500;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.file-drop-zone:hover p {
  color: var(--accent-blue);
  transform: translateY(-1px);
}

.file-info {
  font-size: 0.9rem;
  color: var(--text-muted);
  opacity: 0.8;
}

.file-info-card {
  display: flex;
  align-items: center;
  background: var(--glass-bg-secondary);
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  border-radius: var(--border-radius-large);
  padding: 24px;
  border: 1px solid rgba(0, 122, 255, 0.1);
  margin-top: 20px;
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
}

.file-info-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0.02;
  pointer-events: none;
}

.file-icon {
  font-size: 1.8rem;
  margin-right: 18px;
  color: var(--accent-blue);
  font-weight: 600;
  text-shadow: 0 0 10px rgba(0, 122, 255, 0.3);
}

.file-data {
  flex: 1;
}

.file-name {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
  font-size: 1.05rem;
}

.file-size,
.file-type {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 2px;
  opacity: 0.8;
}

.remove-file-btn {
  background: var(--glass-bg-danger);
  color: var(--danger-color);
  border: 1px solid rgba(248, 81, 73, 0.3);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 600;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  box-shadow: 0 2px 8px rgba(248, 81, 73, 0.1);
}

.remove-file-btn:hover {
  background: rgba(248, 81, 73, 0.3);
  border-color: var(--danger-color);
  color: #ff6b6b;
  transform: scale(1.05);
  box-shadow: 0 4px 16px rgba(248, 81, 73, 0.3);
}

.text-preview {
  margin-top: 20px;
  background: var(--glass-bg-secondary);
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  border-radius: var(--border-radius-large);
  padding: 24px;
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  position: relative;
  overflow: hidden;
}

.text-preview::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-secondary);
  opacity: 0.02;
  pointer-events: none;
}

.text-preview h3 {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 12px;
  font-weight: 600;
}

.preview-text {
  background: var(--glass-bg-tertiary);
  border: 1px solid rgba(0, 122, 255, 0.1);
  border-radius: var(--border-radius);
  padding: 16px;
  font-family: "SF Mono", "Monaco", "Cascadia Code", "Montserrat",
    "JetBrains Mono", "Fira Code", "Courier New", monospace;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-all;
  min-height: 60px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.character-count {
  margin-top: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-align: right;
  font-weight: 500;
}

.character-count.warning {
  color: var(--warning-color);
  font-weight: 600;
}

.character-count.error {
  color: var(--danger-color);
  font-weight: 600;
}

.text-warning {
  margin-top: 20px;
  background: var(--glass-bg-warning);
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  border: 1px solid rgba(241, 224, 90, 0.3);
  border-radius: var(--border-radius-large);
  padding: 24px;
  animation: slideIn 0.3s ease-out;
  box-shadow: 0 4px 16px rgba(241, 224, 90, 0.1);
  position: relative;
  overflow: hidden;
}

.text-warning::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    135deg,
    rgba(241, 224, 90, 0.02),
    rgba(255, 165, 0, 0.02)
  );
  pointer-events: none;
}

.warning-content {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
}

.warning-icon {
  font-size: 2rem;
  color: var(--warning-color);
  text-shadow: 0 0 10px rgba(241, 224, 90, 0.3);
  flex-shrink: 0;
}

.warning-message {
  flex: 1;
}

.warning-message p {
  margin: 0 0 8px 0;
  color: var(--text-primary);
  line-height: 1.5;
}

.warning-message p:last-child {
  margin-bottom: 0;
}

.warning-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.warning-actions .btn {
  min-width: 140px;
}

.mode-selection {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.radio-card {
  position: relative;
  cursor: pointer;
}

.radio-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.radio-content {
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: 28px;
  text-align: center;
  transition: var(--transition);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.radio-content::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
}

.radio-card input[type="radio"]:checked + .radio-content {
  border-color: var(--accent-primary);
  background: rgba(88, 166, 255, 0.08);
  box-shadow: 0 8px 32px rgba(88, 166, 255, 0.2);
}

.radio-content:hover {
  border-color: rgba(88, 166, 255, 0.4);
  transform: translateY(-2px);
  background: rgba(88, 166, 255, 0.04);
}

.mode-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
  color: var(--accent-primary);
  font-weight: 600;
  filter: drop-shadow(0 0 8px rgba(88, 166, 255, 0.4));
}

.mode-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.mode-description {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.5;
  opacity: 0.9;
}

.cardano-settings {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.setting-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 18px;
  color: var(--text-primary);
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.pattern-info {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 15px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.pattern-info p {
  display: flex;
  align-items: center;
  gap: 5px;
  margin: 0;
}

.legend-active {
  color: var(--accent-primary);
  font-weight: bold;
}

.legend-available {
  color: var(--accent-success);
  font-weight: bold;
}

.legend-blocked {
  color: var(--accent-danger);
  font-weight: bold;
}

.cardano-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  max-width: 220px;
  margin: 24px auto;
  padding: 20px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--border-radius);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.pattern-actions {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.grid-cell {
  aspect-ratio: 1;
  border: 1px solid rgba(88, 166, 255, 0.2);
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.2rem;
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  position: relative;
  overflow: hidden;
}

.grid-cell::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    45deg,
    transparent 48%,
    rgba(88, 166, 255, 0.1) 50%,
    transparent 52%
  );
  opacity: 0;
  transition: var(--transition);
}

.grid-cell:hover {
  border-color: var(--accent-primary);
  transform: scale(1.05);
  box-shadow: 0 4px 16px rgba(88, 166, 255, 0.3);
}

.grid-cell:hover::before {
  opacity: 1;
}

.grid-cell.active {
  background: rgba(88, 166, 255, 0.2);
  border-color: var(--accent-primary);
  color: var(--text-primary);
  box-shadow: 0 4px 16px rgba(88, 166, 255, 0.4);
}

.grid-cell.active::before {
  opacity: 1;
}

.grid-cell.available {
  background: rgba(86, 211, 100, 0.1);
  border-color: rgba(86, 211, 100, 0.4);
  color: var(--accent-success);
  cursor: pointer;
}

.grid-cell.available:hover {
  background: rgba(86, 211, 100, 0.2);
  border-color: var(--accent-success);
  transform: scale(1.05);
  box-shadow: 0 4px 16px rgba(86, 211, 100, 0.4);
}

.grid-cell.blocked {
  background: rgba(248, 81, 73, 0.1);
  border-color: rgba(248, 81, 73, 0.3);
  color: var(--accent-danger);
  cursor: not-allowed;
  opacity: 0.6;
}

.grid-cell.blocked:hover {
  background: rgba(248, 81, 73, 0.15);
  border-color: rgba(248, 81, 73, 0.5);
  transform: scale(1.02);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  border: none;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  text-decoration: none;
  justify-content: center;
  position: relative;
  overflow: hidden;
  backdrop-filter: var(--backdrop-filter);
  -webkit-backdrop-filter: var(--backdrop-filter);
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-primary);
  box-shadow: var(--glass-shadow);
}

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn:disabled::before {
  display: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  border: 1px solid rgba(0, 122, 255, 0.3);
  box-shadow: 0 8px 32px rgba(0, 122, 255, 0.25);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 16px 48px rgba(0, 122, 255, 0.35);
  border-color: var(--accent-blue-hover);
}

.btn-warning {
  background: var(--gradient-warning);
  color: #1a1a1a;
  border: 1px solid rgba(255, 149, 0, 0.3);
  box-shadow: 0 8px 32px rgba(255, 149, 0, 0.25);
  font-weight: 600;
}

.btn-warning:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 16px 48px rgba(255, 149, 0, 0.35);
  background: linear-gradient(
    135deg,
    var(--accent-orange-hover) 0%,
    #ffcc02 100%
  );
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  font-family: "Montserrat";
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(88, 166, 255, 0.1);
  border-color: rgba(88, 166, 255, 0.3);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(88, 166, 255, 0.2);
}

.btn-small {
  padding: 10px 20px;
  font-size: 0.9rem;
  font-family: "Montserrat";
}

.action-section {
  text-align: center;
  margin: 30px 0;
}

.action-section .btn {
  min-width: 220px;
  font-size: 1.1rem;
  padding: 18px 36px;
}

.result-section {
  animation: slideIn 0.6s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
}

.result-label {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.result-text {
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  padding: 24px;
  font-family: "JetBrains Mono", "Fira Code", "Courier New", monospace;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 350px;
  overflow-y: auto;
  position: relative;
  margin-bottom: 30px;
}

.result-text::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(88, 166, 255, 0.3),
    transparent
  );
}

.result-visualization {
  margin-top: 20px;
}

.result-visualization h3 {
  font-size: 1.3rem;
  color: var(--text-primary);
  margin-bottom: 20px;
  text-align: center;
  font-weight: 600;
}

.visualization-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.grid-container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.grid-container h4 {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 8px;
  font-weight: 600;
}

.grid-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  text-align: center;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  max-width: 200px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--border-radius);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.result-cell {
  aspect-ratio: 1;
  border: 1px solid rgba(88, 166, 255, 0.2);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.1rem;
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  color: var(--text-primary);
  transition: var(--transition);
}

.result-cell.empty {
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.01);
}

.pattern-overlay .result-cell.active {
  background: rgba(88, 166, 255, 0.3);
  border-color: var(--accent-primary);
  color: var(--text-primary);
  box-shadow: 0 0 12px rgba(88, 166, 255, 0.4);
  animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
  from {
    box-shadow: 0 0 12px rgba(88, 166, 255, 0.4);
  }
  to {
    box-shadow: 0 0 20px rgba(88, 166, 255, 0.8);
  }
}

.pattern-overlay .result-cell.inactive {
  background: rgba(255, 255, 255, 0.01);
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  opacity: 0.4;
}

.rotation-controls {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.rotation-btn {
  padding: 10px 16px;
  font-size: 0.9rem;
  background: rgba(88, 166, 255, 0.1);
  border: 1px solid rgba(88, 166, 255, 0.3);
  color: var(--accent-primary);
  min-width: 120px;
}

.rotation-btn:hover {
  background: rgba(88, 166, 255, 0.2);
  border-color: var(--accent-primary);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(88, 166, 255, 0.3);
}

.rotation-icon {
  font-size: 1.2rem;
  display: inline-block;
  transition: transform 0.3s ease;
}

.rotation-btn:hover .rotation-icon {
  transform: rotate(90deg);
}

.rotation-info {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-align: center;
}

.rotation-info span:last-child {
  color: var(--accent-primary);
  font-weight: 600;
}

.extracted-letters {
  background: rgba(86, 211, 100, 0.05);
  border: 1px solid rgba(86, 211, 100, 0.2);
  border-radius: var(--border-radius);
  padding: 15px;
  text-align: center;
  margin-top: 15px;
}

.extracted-letters h4 {
  font-size: 1.1rem;
  color: var(--text-primary);
  margin-bottom: 8px;
  font-weight: 600;
}

.extraction-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.letters-display {
  background: rgba(86, 211, 100, 0.1);
  border: 1px solid rgba(86, 211, 100, 0.3);
  border-radius: 8px;
  padding: 12px 20px;
  font-family: "JetBrains Mono", "Fira Code", "Courier New", monospace;
  font-size: 1.2rem;
  font-weight: bold;
  color: var(--accent-success);
  letter-spacing: 2px;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

footer {
  margin-top: 60px;
  padding: 40px 0;
  text-align: center;
  border-top: 1px solid var(--glass-border);
  color: var(--text-muted);
}

@media (max-width: 1920px) and (max-height: 1080px) {
  .container {
    max-width: 800px;
    padding: 15px;
  }

  .stage-card {
    min-height: 400px;
    padding: 28px;
  }

  .result-visualization {
    margin-top: 15px;
  }

  .visualization-container {
    gap: 15px;
  }

  .result-grid {
    max-width: 160px;
    gap: 4px;
  }

  .result-cell {
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
  }
}

@media (max-width: 1366px) {
  .container {
    max-width: 700px;
    padding: 12px;
  }

  header {
    padding: 25px 0;
    margin-bottom: 15px;
  }

  header h1 {
    font-size: 2.2rem;
  }

  .stage-card {
    min-height: 350px;
    padding: 24px;
  }

  .stage-card h2 {
    font-size: 1.6rem;
    margin-bottom: 20px;
  }

  .visualization-container {
    flex-direction: column;
    gap: 12px;
    align-items: center;
  }

  .grid-container {
    max-width: 100%;
    text-align: center;
  }

  .result-grid {
    max-width: 140px;
    gap: 3px;
    margin: 0 auto;
  }

  .result-cell {
    width: 28px;
    height: 28px;
    font-size: 0.8rem;
  }

  .extracted-letters {
    margin-top: 12px;
  }

  .letters-display {
    font-size: 1rem;
    padding: 10px;
  }

  .rotation-controls {
    margin-top: 8px;
    gap: 8px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 15px;
  }

  header h1 {
    font-size: 2.5rem;
  }

  header {
    padding: 40px 0;
    margin-bottom: 30px;
  }

  .mode-selection {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .card,
  .stage-card {
    padding: 25px;
  }

  .stage-card {
    min-height: 400px;
  }

  .stage-navigation {
    padding: 0 10px;
    margin-bottom: 30px;
  }

  .nav-arrow {
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
  }

  .stage-title {
    font-size: 1.2rem;
  }

  .stage {
    padding: 0 10px;
  }

  .file-drop-zone {
    padding: 40px 15px;
  }

  .result-header {
    flex-direction: column;
    gap: 15px;
    align-items: stretch;
  }

  .cardano-grid {
    max-width: 180px;
    gap: 8px;
    padding: 16px;
  }

  .action-section .btn {
    min-width: 180px;
    font-size: 1rem;
    padding: 16px 30px;
  }

  .warning-actions {
    flex-direction: column;
    gap: 10px;
  }

  .warning-actions .btn {
    min-width: auto;
    width: 100%;
  }

  .text-preview {
    padding: 15px;
  }

  .preview-text {
    padding: 12px;
    font-size: 1rem;
  }

  .visualization-container {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .result-grid {
    max-width: 160px;
    gap: 6px;
  }

  .result-cell {
    font-size: 1rem;
  }

  .result-visualization h3 {
    font-size: 1.2rem;
  }

  .process-summary {
    padding: 20px;
  }

  .text-preview {
    padding: 16px;
  }

  .preview-text {
    font-size: 1rem;
    padding: 12px;
  }

  .visualization-container {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .result-grid {
    max-width: 160px;
    gap: 6px;
    padding: 12px;
  }

  .result-cell {
    font-size: 1rem;
  }

  .result-visualization h3 {
    font-size: 1.2rem;
  }
}

.card:nth-child(even) {
  background: rgba(188, 140, 255, 0.02);
}

.card:nth-child(odd) {
  background: rgba(88, 166, 255, 0.02);
}

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

header h1 {
  animation: float 6s ease-in-out infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(88, 166, 255, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(88, 166, 255, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(88, 166, 255, 0);
  }
}

.btn-primary:active {
  animation: pulse 1.5s infinite;
}