@import url("https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700&display=swap");

:root {
  --bg-primary: #0b1d51;
  --bg-secondary: rgba(255, 255, 255, 0.05);
  --bg-hover: rgba(255, 255, 255, 0.08);
  --color: #fff;
  --color-muted: rgba(255, 255, 255, 0.6);
  --accent: #667eea;
  --accent-hover: #7b93ff;
  --border: 1px solid rgba(255, 255, 255, 0.15);
  --border-focus: 1px solid var(--accent);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.2s ease;
}

body {
  background-color: var(--bg-primary);
}

* {
  color: white;
  font-family: "Montserrat", sans-serif;
  margin: 0;
  box-sizing: border-box;
}

/* ── Header ── */
header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 0 8px;
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: center;
}

.producthunt {
  margin: 0 auto;
  opacity: 0.85;
  transition: opacity var(--transition);
}

.producthunt:hover {
  opacity: 1;
}

h1 {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 700;
}

/* ── Main Layout ── */
main {
  margin: auto;
  display: flex;
  flex-direction: row-reverse;
  justify-content: center;
  gap: 24px;
  padding: 16px;
  max-width: 1200px;
}

/* ── Controls Panel ── */
#controls {
  border: var(--border);
  border-radius: var(--radius);
  background: var(--bg-secondary);
  backdrop-filter: blur(10px);
  padding: 8px;
  min-width: 340px;
  max-width: 380px;
}

.control-group {
  padding: 12px 16px;
}

.control-group + .control-group {
  border-top: var(--border);
}

.group-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-muted);
  margin-bottom: 12px;
}

/* ── Control Row ── */
.el-wrapper {
  display: grid;
  grid-template-columns: 110px 1fr 70px;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.el-wrapper label {
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
}

/* ── Number Inputs ── */
input[type="number"] {
  font-size: 13px;
  font-family: "Montserrat", sans-serif;
  border: var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  width: 100%;
  background-color: var(--bg-secondary);
  color: var(--color);
  text-align: center;
  outline: none;
  transition: border-color var(--transition), background-color var(--transition);
  -moz-appearance: textfield;
  appearance: textfield;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

input[type="number"]:hover {
  background-color: var(--bg-hover);
}

input[type="number"]:focus {
  border-color: var(--accent);
  background-color: rgba(102, 126, 234, 0.1);
}

/* ── Range Sliders ── */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
  transition: background var(--transition);
}

input[type="range"]:hover {
  background: rgba(255, 255, 255, 0.25);
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid white;
  transition: transform var(--transition), box-shadow var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 8px rgba(102, 126, 234, 0.5);
}

input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid white;
}

/* ── Toggle Switch ── */
.toggle-row {
  grid-template-columns: 110px 1fr !important;
}

.toggle {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  cursor: pointer;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background-color: rgba(255, 255, 255, 0.15);
  border-radius: 24px;
  transition: background-color var(--transition);
}

.toggle-slider::before {
  content: "";
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  border-radius: 50%;
  transition: transform var(--transition);
}

.toggle input:checked + .toggle-slider {
  background-color: var(--accent);
}

.toggle input:checked + .toggle-slider::before {
  transform: translateX(20px);
}

/* ── Color Picker ── */
input[type="color"] {
  -webkit-appearance: none;
  appearance: none;
  width: 36px;
  height: 36px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  cursor: pointer;
  padding: 0;
  overflow: hidden;
  background: none;
  transition: border-color var(--transition);
}

input[type="color"]:hover {
  border-color: var(--accent);
}

input[type="color"]::-webkit-color-swatch-wrapper {
  padding: 2px;
}

input[type="color"]::-webkit-color-swatch {
  border: none;
  border-radius: 50%;
}

/* ── Buttons ── */
.control-actions {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  border-top: var(--border);
}

.btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 25px;
  font-size: 13px;
  font-weight: 600;
  font-family: "Montserrat", sans-serif;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  white-space: nowrap;
}

.btn i {
  font-size: 13px;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-primary i {
  color: white;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: var(--border);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: translateY(-1px);
}

.btn-secondary i {
  color: white;
}

.btn-success {
  background: #48bb78;
  color: white;
}

.btn-success i {
  color: white;
}

/* ── Display Area ── */
#display-area {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

#wave-container {
  margin: auto;
  background-color: var(--color);
  border-radius: var(--radius-sm);
  max-width: 100%;
}

/* ── Code Result Block ── */
.result-wrapper {
  position: relative;
}

#result {
  background: rgba(0, 0, 0, 0.4);
  border: var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  font-family: "Courier New", Courier, monospace;
  font-size: 13px;
  line-height: 1.6;
  color: #a5d6ff;
  word-break: break-all;
  white-space: pre-wrap;
  max-width: 700px;
}

/* ── Footer ── */
.footer {
  padding: 24px 0;
  text-align: center;
  border-top: var(--border);
  margin-top: 32px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.app-info {
  display: flex;
  align-items: center;
}

.logo {
  width: 50px;
  height: 50px;
  margin-right: 10px;
}

.app-name {
  font-size: 1.5rem;
}

.links {
  display: flex;
  align-items: center;
  gap: 15px;
}

.links a {
  transition: opacity var(--transition);
}

.links a:hover {
  opacity: 0.8;
}

.links a i {
  font-size: 30px;
  color: white;
  margin: 0 5px;
}

.boardroom-link {
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: rgba(255, 255, 255, 0.1);
  padding: 6px 14px;
  border-radius: 20px;
  text-decoration: none;
  font-size: 14px;
  transition: background-color var(--transition);
}

.boardroom-link:hover {
  background-color: rgba(255, 255, 255, 0.25);
}

.boardroom-link i {
  font-size: 18px !important;
}

.motto {
  margin-top: 20px;
  width: 100%;
  text-align: center;
  color: var(--color-muted);
}

/* ── Page Layout ── */
.page-wrapper {
  display: flex;
  gap: 20px;
  max-width: 1600px;
  margin: 0 auto;
  align-items: start;
  justify-content: space-around;
}

/* ── Ad Sidebar (kept from existing) ── */
.ad-sidebar {
  flex: 0 0 250px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: sticky;
  top: 20px;
}

.ad-block {
  background: white;
  border-radius: 12px;
  padding: 20px 20px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
  border: 3px dashed #cbd5e0;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}

.ad-block:hover {
  border-color: #667eea;
  transform: translateY(-3px);
  box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

.ad-icon {
  font-size: 48px;
  margin-bottom: 15px;
  opacity: 0.3;
}

.ad-text {
  font-size: 18px;
  font-weight: 600;
  color: #4a5568;
  margin-bottom: 10px;
  line-height: 1.4;
}

.ad-price {
  font-size: 24px;
  font-weight: 700;
  color: #667eea;
  margin-bottom: 5px;
}

.ad-period {
  font-size: 13px;
  color: #718096;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  main {
    flex-direction: column;
    align-items: center;
  }

  #controls {
    min-width: unset;
    max-width: 100%;
    width: 100%;
  }

  #result {
    max-width: 100%;
  }

  #wave-container {
    max-width: 100%;
  }

  .footer-content {
    flex-direction: column;
    gap: 16px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.4rem;
  }

  main {
    padding: 10px;
    gap: 16px;
  }

  .el-wrapper {
    grid-template-columns: 80px 1fr 56px;
    gap: 6px;
  }

  .el-wrapper label {
    font-size: 12px;
  }

  .control-group {
    padding: 10px 12px;
  }

  .control-actions {
    flex-direction: column;
    padding: 10px 12px;
  }

  .links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .footer-content {
    padding: 0 12px;
  }
}

@media (max-width: 375px) {
  header {
    padding: 16px 0 4px;
    gap: 8px;
  }

  .header-top {
    gap: 6px;
  }

  .logo {
    width: 36px;
    height: 36px;
    margin-right: 6px;
  }

  h1 {
    font-size: 1.2rem;
  }

  .producthunt img {
    width: 200px !important;
    height: auto !important;
  }

  main {
    padding: 8px;
    gap: 12px;
  }

  #controls {
    padding: 4px;
    border-radius: var(--radius-sm);
  }

  .control-group {
    padding: 8px 10px;
  }

  .group-title {
    font-size: 10px;
    margin-bottom: 8px;
  }

  .el-wrapper {
    grid-template-columns: 1fr 54px;
    gap: 6px;
    margin-bottom: 8px;
  }

  .el-wrapper label {
    grid-column: 1 / -1;
    font-size: 11px;
    margin-bottom: -2px;
  }

  .el-wrapper input[type="range"] {
    grid-column: 1;
  }

  .toggle-row {
    grid-template-columns: 1fr auto !important;
  }

  .toggle-row label {
    grid-column: 1;
    margin-bottom: 0;
  }

  input[type="number"] {
    font-size: 12px;
    padding: 5px 4px;
  }

  .control-actions {
    padding: 8px 10px;
    gap: 6px;
  }

  .btn {
    padding: 9px 12px;
    font-size: 12px;
  }

  #wave-container {
    max-width: 100%;
    overflow: hidden;
  }

  #result {
    font-size: 11px;
    padding: 12px;
    word-break: break-all;
  }

  .footer {
    margin-top: 20px;
    padding: 16px 0;
  }

  .footer-content {
    padding: 0 10px;
  }

  .app-name {
    font-size: 1.1rem;
  }

  .links {
    gap: 10px;
  }

  .links a i {
    font-size: 24px;
  }

  .boardroom-link {
    font-size: 12px;
    padding: 5px 10px;
  }

  .boardroom-link i {
    font-size: 14px !important;
  }

  .motto {
    font-size: 13px;
    margin-top: 14px;
  }
}