:root {
  --bg: #091018;
  --surface: rgba(11, 18, 27, 0.88);
  --surface-strong: rgba(9, 15, 23, 0.92);
  --line: rgba(136, 166, 197, 0.16);
  --line-strong: rgba(136, 166, 197, 0.28);
  --text: #edf4fb;
  --muted: #9fadc0;
  --accent: #7cc7ff;
  --accent-pressed: #65b8f0;
  --accent-ink: #081723;
  --focus: rgba(124, 199, 255, 0.28);
  --shadow: 0 20px 46px rgba(0, 0, 0, 0.3);
  --hero-stage-height: 0px;
  --mobile-gutter: 0.9rem;
  --shell-width: 76rem;
  --desktop-history-width: 24rem;
  --desktop-main-width: 27rem;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background-color: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  color: var(--text);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
  background:
    radial-gradient(circle at top center, rgba(124, 199, 255, 0.12), transparent 34%),
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-color: var(--bg);
  background-size: auto, 18px 18px, 18px 18px;
}

.app-shell {
  width: 100%;
  min-height: 100vh;
  min-height: 100svh;
}

.app-column {
  width: min(100%, 34rem);
  min-height: 100vh;
  min-height: 100svh;
  margin: 0 auto;
}

.hero-stage {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  padding:
    0
    var(--mobile-gutter)
    calc(env(safe-area-inset-bottom, 0px) + var(--mobile-gutter));
}

.app-panel {
  display: grid;
  gap: 1.1rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background:
    linear-gradient(180deg, rgba(124, 199, 255, 0.08), transparent 26%),
    var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.app-panel-hero {
  width: min(100%, 34rem);
  margin: 0 auto;
}

.hero-copy {
  display: grid;
  gap: 0.55rem;
}

.eyebrow,
.section-label {
  margin: 0;
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.status-message,
.history-section h2 {
  margin: 0;
  letter-spacing: -0.03em;
}

.status-message {
  max-width: 13ch;
  font-size: clamp(1.9rem, 8.8vw, 2.7rem);
  line-height: 1.02;
  text-wrap: balance;
}

.clean-button {
  position: relative;
  isolation: isolate;
  width: 100%;
  padding: 1rem 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 13px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.28), rgba(255, 255, 255, 0.08) 34%, transparent 70%),
    linear-gradient(135deg, rgba(160, 220, 255, 0.22), transparent 58%),
    var(--accent);
  color: var(--accent-ink);
  font-size: 1rem;
  font-weight: 750;
  letter-spacing: -0.01em;
  cursor: pointer;
  overflow: visible;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    inset 0 -1px 0 rgba(0, 0, 0, 0.16),
    0 10px 22px rgba(0, 0, 0, 0.18);
  transition:
    transform 140ms ease,
    background-color 140ms ease,
    box-shadow 140ms ease,
    opacity 140ms ease;
}

.clean-button::before,
.clean-button::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
}

.clean-button::before {
  background: linear-gradient(120deg, transparent 20%, rgba(255, 255, 255, 0.34) 50%, transparent 80%);
  opacity: 0;
  transform: translateX(-40%);
}

.clean-button::after {
  inset: -0.25rem;
  border: 1px solid rgba(124, 199, 255, 0.26);
  opacity: 0;
  transform: scale(0.96);
}

.clean-button:active {
  transform: translateY(1px);
  background: var(--accent-pressed);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    inset 0 -1px 0 rgba(0, 0, 0, 0.12),
    0 6px 14px rgba(0, 0, 0, 0.14);
}

.clean-button.is-bursting {
  animation: button-pop 460ms cubic-bezier(0.2, 0.84, 0.24, 1);
}

.clean-button.is-bursting::before {
  animation: button-sheen 420ms ease;
}

.clean-button.is-bursting::after {
  animation: button-halo 460ms ease-out;
}

.clean-button-label {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition:
    transform 180ms ease,
    opacity 180ms ease;
}

.button-loading {
  position: absolute;
  inset: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  z-index: 1;
  transition: opacity 180ms ease;
}

.button-spinner {
  width: 1.4rem;
  height: 1.4rem;
  border: 3px solid rgba(8, 23, 35, 0.22);
  border-top-color: rgba(8, 23, 35, 0.9);
  border-radius: 50%;
  animation: button-spinner-rotate 700ms linear infinite;
}

.clean-button.is-loading {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.08) 34%, transparent 70%),
    linear-gradient(135deg, rgba(160, 220, 255, 0.18), transparent 58%),
    var(--accent-pressed);
}

.clean-button.is-loading .clean-button-label {
  opacity: 0;
  transform: translateY(0.18rem);
}

.clean-button.is-loading .button-loading {
  opacity: 1;
}

.clean-button.is-loading::before,
.clean-button.is-loading::after {
  opacity: 0;
}

.hero-credit {
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.83rem;
  line-height: 1.4;
  text-align: center;
}

.hero-credit a {
  color: inherit;
  text-underline-offset: 0.14em;
  text-decoration-color: rgba(159, 173, 192, 0.5);
}

.hero-credit a:hover,
.hero-credit a:focus-visible {
  color: var(--text);
  text-decoration-color: currentColor;
}

.button-spark {
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--spark-size, 0.4rem);
  height: var(--spark-size, 0.4rem);
  margin: calc(var(--spark-size, 0.4rem) * -0.5);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 0 14px rgba(255, 255, 255, 0.42);
  opacity: 0;
  pointer-events: none;
  transform: translate3d(0, 0, 0) scale(0.2);
}

.clean-button.is-bursting .button-spark {
  animation: spark-fly 560ms cubic-bezier(0.18, 0.7, 0.24, 1) forwards;
  animation-delay: var(--spark-delay, 0ms);
}

.clean-button:focus-visible,
.history-link:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 3px var(--focus),
    inset 0 1px 0 rgba(255, 255, 255, 0.22),
    inset 0 -1px 0 rgba(0, 0, 0, 0.16),
    0 10px 22px rgba(0, 0, 0, 0.18);
}

.clean-button[disabled] {
  cursor: progress;
}

.history-section {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  height: 100vh;
  height: 100svh;
  min-height: 100vh;
  min-height: 100svh;
  padding:
    1rem
    var(--mobile-gutter)
    calc(var(--hero-stage-height) + env(safe-area-inset-bottom, 0px) + 1rem);
  border: none;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  backdrop-filter: none;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.history-header {
  display: grid;
  gap: 0.25rem;
}

.history-section h2 {
  font-size: 1.08rem;
  line-height: 1.1;
}

.history-summary,
.history-empty,
.history-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.history-body {
  display: flex;
  flex: 0 0 auto;
  min-height: auto;
  flex-direction: column;
}

.history-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.history-item {
  display: flex;
  animation: fade-in 180ms ease;
}

.history-link {
  display: block;
  width: 100%;
  padding: 0.85rem 0.9rem;
  color: var(--text);
  text-decoration: none;
  background:
    linear-gradient(90deg, rgba(124, 199, 255, 0.08), transparent 24%),
    rgba(11, 18, 27, 0.72);
  border: 1px solid var(--line);
  border-radius: 11px;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background-color 140ms ease,
    box-shadow 140ms ease;
}

.history-url {
  display: block;
  font-weight: 600;
  line-height: 1.35;
  word-break: break-word;
}

.history-meta {
  display: block;
  margin-top: 0.38rem;
}

.history-empty {
  margin-top: auto;
  padding: 0.95rem 0.9rem;
  border: 1px dashed var(--line);
  border-radius: 11px;
  background: rgba(11, 18, 27, 0.48);
}

.history-empty[hidden] {
  display: none;
}

@media (hover: hover) {
  .clean-button:hover:not([disabled]) {
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.22),
      inset 0 -1px 0 rgba(0, 0, 0, 0.16),
      0 12px 24px rgba(0, 0, 0, 0.2);
  }

  .history-link:hover {
    transform: translateY(-1px);
    border-color: var(--line-strong);
    background:
      linear-gradient(90deg, rgba(124, 199, 255, 0.12), transparent 24%),
      rgba(11, 18, 27, 0.76);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
  }
}

@keyframes button-pop {
  0% {
    transform: scale(1) rotate(0deg);
  }

  32% {
    transform: scale(1.035) rotate(var(--button-tilt, 0deg));
  }

  58% {
    transform: scale(0.985) rotate(calc(var(--button-tilt, 0deg) * -0.4));
  }

  100% {
    transform: scale(1) rotate(0deg);
  }
}

@keyframes button-sheen {
  0% {
    opacity: 0;
    transform: translateX(-46%);
  }

  35% {
    opacity: 0.85;
  }

  100% {
    opacity: 0;
    transform: translateX(42%);
  }
}

@keyframes button-halo {
  0% {
    opacity: 0.65;
    transform: scale(0.92);
  }

  100% {
    opacity: 0;
    transform: scale(1.08);
  }
}

@keyframes spark-fly {
  0% {
    opacity: 0;
    transform: translate3d(0, 0, 0) scale(0.2);
  }

  18% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translate3d(var(--spark-x, 0), var(--spark-y, 0), 0) scale(1);
  }
}

@keyframes button-spinner-rotate {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 540px) {
  :root {
    --mobile-gutter: 1.1rem;
  }

  .app-panel {
    padding: 1.1rem;
  }

  .history-header {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    column-gap: 1rem;
  }

  .history-summary {
    text-align: right;
    max-width: 18ch;
  }
}

@media (min-width: 700px) {
  .app-panel {
    gap: 1.2rem;
    padding: 1.25rem;
  }
}

@media (min-width: 960px) {
  body {
    overflow: auto;
  }

  .app-shell {
    padding: 2.25rem;
  }

  .app-column {
    width: min(100%, var(--shell-width));
    min-height: calc(100vh - 4.5rem);
    min-height: calc(100svh - 4.5rem);
    display: grid;
    grid-template-columns: minmax(18rem, var(--desktop-history-width)) minmax(21rem, var(--desktop-main-width));
    justify-content: center;
    align-items: stretch;
    gap: clamp(2rem, 4vw, 4rem);
  }

  .hero-stage {
    position: static;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    min-height: calc(100vh - 4.5rem);
    min-height: calc(100svh - 4.5rem);
    padding: 0;
    order: 2;
  }

  .app-panel-hero {
    width: 100%;
    max-width: var(--desktop-main-width);
    margin: 0;
  }

  .history-section {
    order: 1;
    align-self: center;
    justify-self: end;
    width: 100%;
    max-width: var(--desktop-history-width);
    height: auto;
    min-height: auto;
    padding: 1.25rem;
    border: 1px solid var(--line);
    border-radius: 16px;
    background:
      linear-gradient(180deg, rgba(124, 199, 255, 0.08), transparent 26%),
      var(--surface);
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    overflow: visible;
  }

  .history-header {
    grid-template-columns: minmax(0, 1fr);
    justify-items: end;
    text-align: right;
  }

  .history-body {
    flex: 1;
    min-height: 0;
    gap: 0.75rem;
  }

  .history-list {
    margin-top: 0;
  }

  .history-item {
    justify-content: flex-end;
  }

  .history-link {
    width: min(100%, 22rem);
  }

  .history-empty {
    margin-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}