:root {
  --bg-color: #f3f0ea;
  --text-color: #000000;
  --primary: #ff5e97;
  --secondary: #24d6ff;
  --tertiary: #ffe600;
  --border-width: 4px;
  --card-shadow: 6px 6px 0px #000000;
  --btn-shadow: 4px 4px 0px #000000;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  line-height: 1.4;
  transition: background-color 0.2s ease;
}

.neo-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 20px;
}

.neo-header {
  border: var(--border-width) solid #000;
  background-color: var(--primary);
  padding: 30px;
  margin-bottom: 40px;
  box-shadow: var(--card-shadow);
  position: relative;
}

.back-btn {
  display: inline-block;
  text-decoration: none;
  color: #000;
  font-weight: bold;
  border: 2px solid #000;
  padding: 5px 12px;
  background: #fff;
  box-shadow: 2px 2px 0px #000;
  margin-bottom: 20px;
  transition: transform 0.1s, box-shadow 0.1s;
}

.back-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0px #000;
}

.back-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 0px 0px 0px #000;
}

.neo-title {
  font-family: 'Syne', sans-serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin: 0 0 10px 0;
  text-transform: uppercase;
  letter-spacing: -1px;
}

.neo-subtitle {
  font-size: 1.25rem;
  margin: 0;
  background: #fff;
  display: inline-block;
  padding: 5px 10px;
  border: 2px solid #000;
}

.neo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.neo-card {
  border: var(--border-width) solid #000;
  background-color: #ffffff;
  padding: 30px;
  box-shadow: var(--card-shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.neo-card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 9px 9px 0px #000000;
}

.brand-card {
  background-color: #fff;
}

.brand-card h2 {
  background-color: var(--secondary);
  display: inline-block;
  padding: 4px 12px;
  border: 2px solid #000;
  margin-top: 0;
}

.brand-card ul {
  padding-left: 20px;
}

.brand-card li {
  margin-bottom: 8px;
}

.interactive-card {
  background-color: var(--tertiary);
}

.interactive-card h2 {
  margin-top: 0;
}

.button-group {
  display: flex;
  gap: 15px;
  margin-top: 20px;
}

.neo-btn {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  padding: 12px 24px;
  border: var(--border-width) solid #000;
  cursor: pointer;
  box-shadow: var(--btn-shadow);
  transition: transform 0.1s, box-shadow 0.1s;
}

.neo-btn-cyan {
  background-color: var(--secondary);
}

.neo-btn-yellow {
  background-color: #fff;
}

.neo-btn-pink {
  background-color: var(--primary);
}

.neo-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0px #000000;
}

.neo-btn:active {
  transform: translate(4px, 4px);
  box-shadow: 0px 0px 0px #000000;
}

.feedback-card h2 {
  margin-top: 0;
}

.input-wrapper {
  display: flex;
  gap: 10px;
  margin: 20px 0;
}

.neo-input {
  flex-grow: 1;
  font-family: inherit;
  font-size: 1rem;
  padding: 10px 15px;
  border: 3px solid #000;
  outline: none;
  box-shadow: 3px 3px 0px #000;
  transition: transform 0.1s, box-shadow 0.1s;
}

.neo-input:focus {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0px #000;
  background-color: #fffde6;
}

.live-preview {
  background: #eee;
  padding: 10px;
  border: 2px solid #000;
  font-style: italic;
  min-height: 20px;
}

.stat-card {
  background-color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.stat-num {
  font-family: 'Syne', sans-serif;
  font-size: 5rem;
  line-height: 1;
  margin: 0;
  text-shadow: 4px 4px 0px var(--secondary);
  -webkit-text-stroke: 2px #000;
}

.stat-label {
  font-weight: 700;
  margin-top: 10px;
  text-transform: uppercase;
}

@media (max-width: 600px) {
  .button-group, .input-wrapper {
    flex-direction: column;
  }
}