:root {
  --bg: #0f0f12;
  --bg-alt: #15151b;
  --text: #e0e0e0;
  --muted: #9aa0a6;
  --accent: #00d4ff;
  --accent-soft: rgba(0, 212, 255, 0.15);
  --card: #12121a;
  --border: #222230;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --font: "JetBrains Mono", "Fira Code", monospace;
  --font-display: "Orbitron", sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  padding-bottom: 60px;
}

.bg-glow {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(0, 212, 255, 0.1), transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.06), transparent 55%),
    radial-gradient(circle at 50% 70%, rgba(255, 255, 255, 0.03), transparent 60%);
  pointer-events: none;
  z-index: -1;
}

/* Header */
.page-header {
  padding: 20px 5vw;
  border-bottom: 1px solid var(--border);
  background: rgba(18, 18, 26, 0.8);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1400px;
  margin: 0 auto;
}

.back-btn {
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
}

.back-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.3);
}

.page-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 900;
  letter-spacing: 4px;
  color: var(--accent);
  text-shadow: 0 0 20px rgba(0, 212, 255, 0.6);
  position: relative;
}

.glitch-title {
  position: relative;
  animation: glitch-text 5s infinite;
}

.glitch-title::before,
.glitch-title::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.8;
}

.glitch-title::before {
  color: #ff00ff;
  animation: glitch-1 2.5s infinite;
  clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
}

.glitch-title::after {
  color: #00ffff;
  animation: glitch-2 2.5s infinite;
  clip-path: polygon(0 55%, 100% 55%, 100% 100%, 0 100%);
}

@keyframes glitch-text {
  0%, 90%, 100% {
    transform: translate(0);
  }
  91% {
    transform: translate(-2px, 2px);
  }
  92% {
    transform: translate(2px, -2px);
  }
  93% {
    transform: translate(-2px, 2px);
  }
}

@keyframes glitch-1 {
  0%, 90%, 100% {
    transform: translate(0);
  }
  91% {
    transform: translate(-3px, 0);
  }
  92% {
    transform: translate(3px, 0);
  }
}

@keyframes glitch-2 {
  0%, 90%, 100% {
    transform: translate(0);
  }
  91% {
    transform: translate(3px, 0);
  }
  92% {
    transform: translate(-3px, 0);
  }
}

.fullscreen-btn {
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

.fullscreen-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.3);
}

/* Main Container */
.main-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 5vw;
  display: grid;
  gap: 24px;
}

/* Section Cards */
.section-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: rgba(0, 212, 255, 0.05);
  border-bottom: 1px solid var(--border);
}

.header-icon {
  color: var(--accent);
  font-size: 1.2rem;
  font-weight: bold;
}

.card-header h2 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text);
  text-transform: uppercase;
  flex: 1;
}

.card-body {
  padding: 24px;
}

/* Input Section */
#inputText {
  width: 100%;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  resize: vertical;
  transition: all 0.3s ease;
}

#inputText:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.2);
}

.char-count {
  text-align: right;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.85rem;
}

/* Controls */
.controls-section .card-body {
  display: grid;
  gap: 24px;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.control-group label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 1px;
}

select,
input[type="range"] {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s ease;
}

select:focus,
input[type="range"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.2);
}

input[type="range"] {
  padding: 0;
  height: 40px;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
}

input[type="range"]::-webkit-slider-track {
  height: 8px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
  margin-top: -6px;
}

input[type="range"]::-moz-range-track {
  height: 8px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--accent);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
}

/* Preset Buttons */
.preset-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 10px;
}

.preset-btn {
  padding: 10px 16px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.preset-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 212, 255, 0.05);
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.2);
}

.preset-btn:active {
  transform: translateY(1px);
}

/* Output Section */
.output-display {
  min-height: 120px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  color: var(--accent);
  font-size: 1.2rem;
  word-wrap: break-word;
  overflow-wrap: break-word;
  line-height: 2;
  user-select: all;
}

.output-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--muted);
}

.copy-btn {
  padding: 8px 20px;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  color: #050507;
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
}

.copy-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 212, 255, 0.4);
}

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

.copy-btn.copied {
  background: #00ff88;
  box-shadow: 0 4px 12px rgba(0, 255, 136, 0.4);
}

/* Info Section */
.info-content {
  display: grid;
  gap: 12px;
}

.info-item {
  padding: 12px;
  background: rgba(0, 212, 255, 0.05);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  font-size: 0.9rem;
}

.info-item strong {
  color: var(--accent);
  margin-right: 8px;
}

.info-note {
  padding: 16px;
  background: rgba(255, 193, 7, 0.1);
  border: 1px solid rgba(255, 193, 7, 0.3);
  border-radius: 8px;
  font-size: 0.85rem;
  color: #ffd166;
  margin-top: 8px;
}

.info-note strong {
  color: #ffc107;
}

/* Responsive */
@media (max-width: 768px) {
  .header-content {
    gap: 12px;
  }

  .page-title {
    font-size: 1.3rem;
    letter-spacing: 2px;
  }

  .back-btn,
  .fullscreen-btn {
    padding: 6px 12px;
    font-size: 0.8rem;
  }

  .card-body {
    padding: 16px;
  }

  .preset-buttons {
    grid-template-columns: repeat(2, 1fr);
  }

  .output-display {
    font-size: 1rem;
    padding: 16px;
  }
}

@media (max-width: 480px) {
  .output-info {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
}