:root {
  color-scheme: light dark;
  --font-sans:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --page-bg:
    radial-gradient(circle at 15% 15%, rgba(122, 101, 255, 0.28), transparent 28%),
    radial-gradient(circle at 82% 78%, rgba(255, 165, 76, 0.34), transparent 24%),
    radial-gradient(circle at 55% 55%, rgba(255, 120, 182, 0.2), transparent 32%),
    linear-gradient(180deg, #efe4ff 0%, #f9f6ff 45%, #fff8f1 100%);
  --text-primary: #1e1435;
  --text-secondary: rgba(30, 20, 53, 0.74);
  --text-tertiary: rgba(30, 20, 53, 0.55);
  --card-bg: rgba(255, 255, 255, 0.34);
  --card-border: rgba(255, 255, 255, 0.44);
  --card-shadow: 0 30px 70px rgba(70, 33, 120, 0.18);
  --surface-soft: rgba(255, 255, 255, 0.2);
  --surface-strong: rgba(255, 255, 255, 0.28);
  --input-bg: rgba(255, 255, 255, 0.36);
  --input-border: rgba(255, 255, 255, 0.38);
  --input-focus: rgba(255, 255, 255, 0.62);
  --accent: #7f56ff;
  --accent-strong: #6938ef;
  --output-bg: rgba(255, 255, 255, 0.18);
  --badge-bg: rgba(14, 14, 14, 0.84);
  --badge-border: rgba(255, 255, 255, 0.12);
}

:root[data-theme="dark"] {
  --page-bg:
    radial-gradient(circle at 20% 10%, rgba(140, 111, 255, 0.24), transparent 32%),
    radial-gradient(circle at 85% 78%, rgba(255, 153, 74, 0.28), transparent 24%),
    radial-gradient(circle at 55% 52%, rgba(255, 112, 151, 0.16), transparent 28%),
    linear-gradient(180deg, #110d24 0%, #1f1737 48%, #311e2e 100%);
  --text-primary: #f5eeff;
  --text-secondary: rgba(245, 238, 255, 0.82);
  --text-tertiary: rgba(245, 238, 255, 0.58);
  --card-bg: rgba(26, 18, 45, 0.4);
  --card-border: rgba(255, 255, 255, 0.1);
  --card-shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
  --surface-soft: rgba(255, 255, 255, 0.06);
  --surface-strong: rgba(255, 255, 255, 0.08);
  --input-bg: rgba(255, 255, 255, 0.08);
  --input-border: rgba(255, 255, 255, 0.08);
  --input-focus: rgba(162, 127, 255, 0.48);
  --accent: #bd9bff;
  --accent-strong: #d5bbff;
  --output-bg: rgba(255, 255, 255, 0.06);
  --badge-bg: rgba(255, 255, 255, 0.08);
  --badge-border: rgba(255, 255, 255, 0.08);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --page-bg:
      radial-gradient(circle at 20% 10%, rgba(140, 111, 255, 0.24), transparent 32%),
      radial-gradient(circle at 85% 78%, rgba(255, 153, 74, 0.28), transparent 24%),
      radial-gradient(circle at 55% 52%, rgba(255, 112, 151, 0.16), transparent 28%),
      linear-gradient(180deg, #110d24 0%, #1f1737 48%, #311e2e 100%);
    --text-primary: #f5eeff;
    --text-secondary: rgba(245, 238, 255, 0.82);
    --text-tertiary: rgba(245, 238, 255, 0.58);
    --card-bg: rgba(26, 18, 45, 0.4);
    --card-border: rgba(255, 255, 255, 0.1);
    --card-shadow: 0 28px 80px rgba(0, 0, 0, 0.34);
    --surface-soft: rgba(255, 255, 255, 0.06);
    --surface-strong: rgba(255, 255, 255, 0.08);
    --input-bg: rgba(255, 255, 255, 0.08);
    --input-border: rgba(255, 255, 255, 0.08);
    --input-focus: rgba(162, 127, 255, 0.48);
    --accent: #bd9bff;
    --accent-strong: #d5bbff;
    --output-bg: rgba(255, 255, 255, 0.06);
    --badge-bg: rgba(255, 255, 255, 0.08);
    --badge-border: rgba(255, 255, 255, 0.08);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-family: var(--font-sans);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--page-bg);
  color: var(--text-primary);
  transition:
    background 280ms ease,
    color 220ms ease;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent 32%),
    radial-gradient(circle at top, rgba(255, 255, 255, 0.18), transparent 30%);
  mix-blend-mode: screen;
}

button,
textarea,
a {
  font: inherit;
}

.page-shell {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 3rem;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: space-between;
  padding: 0.5rem 0 1rem;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.68), rgba(255, 255, 255, 0.12));
  border: 1px solid rgba(255, 255, 255, 0.28);
  box-shadow: 0 12px 28px rgba(55, 24, 110, 0.15);
}

.brand-mark__dot {
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #ff8fc9, #8664ff);
}

.brand-copy {
  margin-right: auto;
}

.brand-copy h1,
.hero-copy h2,
.glass-card h3 {
  margin: 0;
  letter-spacing: -0.04em;
}

.brand-copy__eyebrow,
.hero-copy__eyebrow,
.glass-card__label,
.field-group__label,
.app-store-badge__caption {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-tertiary);
}

.theme-switcher {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.32rem;
  background: var(--surface-soft);
  border: 1px solid var(--card-border);
  border-radius: 999px;
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
}

.theme-switcher__button,
.ghost-button {
  border: 0;
  cursor: pointer;
  transition:
    transform 180ms ease,
    background 180ms ease,
    color 180ms ease,
    opacity 180ms ease;
}

.theme-switcher__button {
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  background: transparent;
  color: var(--text-secondary);
}

.theme-switcher__button:hover,
.theme-switcher__button:focus-visible {
  background: var(--surface-strong);
  outline: none;
}

.theme-switcher__button[aria-pressed="true"] {
  background: rgba(255, 255, 255, 0.9);
  color: #1b1233;
  box-shadow: 0 10px 24px rgba(15, 12, 32, 0.16);
}

:root[data-theme="dark"] .theme-switcher__button[aria-pressed="true"] {
  background: rgba(255, 255, 255, 0.14);
  color: var(--text-primary);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-switcher__button[aria-pressed="true"] {
    background: rgba(255, 255, 255, 0.14);
    color: var(--text-primary);
  }
}

.hero {
  min-height: calc(100vh - 6rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 540px);
  gap: 2.25rem;
  align-items: center;
}

.hero-copy {
  max-width: 34rem;
}

.hero-copy h2 {
  margin-top: 0.6rem;
  font-size: clamp(2.5rem, 5vw, 4.6rem);
  line-height: 0.94;
  text-wrap: balance;
}

.hero-copy__lead {
  margin: 1.25rem 0 0;
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

.hero-copy__features {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  gap: 0.85rem;
}

.hero-copy__features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-secondary);
}

.hero-copy__features li::before {
  content: "";
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #ff8fc9, #8664ff);
  box-shadow: 0 0 0 0.3rem rgba(134, 100, 255, 0.12);
}

.glass-card {
  position: relative;
  overflow: hidden;
  border-radius: 1.9rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.04));
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(28px) saturate(140%);
  -webkit-backdrop-filter: blur(28px) saturate(140%);
}

.glass-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 85%, rgba(255, 164, 70, 0.3), transparent 24%),
    radial-gradient(circle at 25% 18%, rgba(255, 255, 255, 0.18), transparent 22%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), transparent 26%);
  pointer-events: none;
}

.window-chrome {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.95rem 1.2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.06);
}

.window-chrome__dot {
  width: 0.78rem;
  height: 0.78rem;
  border-radius: 50%;
}

.window-chrome__dot--red {
  background: #ff605c;
}

.window-chrome__dot--amber {
  background: #ffbd44;
}

.window-chrome__dot--green {
  background: #00ca4e;
}

.window-chrome__title {
  margin-left: auto;
  margin-right: auto;
  transform: translateX(-1rem);
  color: var(--text-tertiary);
  font-size: 0.92rem;
  font-weight: 600;
}

.glass-card__body {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.2rem;
  padding: 1.5rem;
}

.glass-card__intro h3 {
  margin-top: 0.55rem;
  font-size: clamp(1.45rem, 2.2vw, 1.95rem);
  line-height: 1.12;
}

.field-group {
  display: grid;
  gap: 0.7rem;
}

textarea,
.output-panel {
  border-radius: 1.2rem;
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

textarea {
  width: 100%;
  resize: vertical;
  min-height: 9rem;
  padding: 1rem 1.05rem;
  color: var(--text-primary);
  line-height: 1.6;
  outline: none;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

textarea::placeholder {
  color: var(--text-tertiary);
}

textarea:focus {
  border-color: var(--input-focus);
  box-shadow: 0 0 0 0.3rem rgba(127, 86, 255, 0.14);
}

.output-panel {
  padding: 1rem 1.05rem 1.15rem;
  background: var(--output-bg);
}

.output-panel__header,
.output-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  justify-content: space-between;
}

.output-actions {
  justify-content: flex-end;
}

.ghost-button {
  padding: 0.55rem 0.85rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.ghost-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  transform: none;
}

.ghost-button:hover,
.ghost-button:focus-visible,
.app-store-badge:hover,
.app-store-badge:focus-visible {
  transform: translateY(-1px);
}

.ghost-button:hover,
.ghost-button:focus-visible {
  background: rgba(255, 255, 255, 0.18);
  outline: none;
}

#slug-output {
  display: block;
  margin-top: 0.95rem;
  min-height: 3.4rem;
  padding: 1rem;
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-primary);
  font-weight: 600;
  line-height: 1.6;
  word-break: break-word;
}

#slug-output[data-empty="true"] {
  color: var(--text-tertiary);
  font-weight: 500;
}

.app-store-badge {
  align-self: start;
  display: inline-flex;
  align-items: center;
  gap: 0.95rem;
  padding: 0.9rem 1.15rem;
  color: #ffffff;
  text-decoration: none;
  border-radius: 1.15rem;
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition:
    transform 180ms ease,
    filter 180ms ease,
    background 180ms ease;
}

:root[data-theme="dark"] .app-store-badge {
  color: var(--text-primary);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .app-store-badge {
    color: var(--text-primary);
  }
}

.app-store-badge:hover,
.app-store-badge:focus-visible {
  filter: brightness(1.05);
  outline: none;
}

.app-store-badge svg {
  width: 1.45rem;
  height: 1.8rem;
  flex: 0 0 auto;
}

.app-store-badge__copy {
  display: grid;
  gap: 0.12rem;
}

.app-store-badge__title {
  font-size: 1.05rem;
  font-weight: 700;
}

@media (max-width: 980px) {
  .page-shell {
    width: min(100% - 1.25rem, 760px);
  }

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

  .topbar {
    flex-wrap: wrap;
  }

  .theme-switcher {
    width: 100%;
    justify-content: space-between;
  }

  .theme-switcher__button {
    flex: 1;
  }

  .hero {
    min-height: auto;
    padding-top: 1rem;
  }

  .hero-copy {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 1rem, 100%);
    padding-top: 0.8rem;
  }

  .topbar {
    gap: 0.8rem;
  }

  .hero-copy h2 {
    font-size: clamp(2.1rem, 12vw, 3rem);
  }

  .glass-card {
    border-radius: 1.45rem;
  }

  .glass-card__body {
    padding: 1.15rem;
  }

  .output-panel__header {
    flex-direction: column;
    align-items: flex-start;
  }
}