:root {
  --bg: #0a0c12;
  --bg-deep: #07090f;
  --panel-border: rgba(152, 161, 185, 0.18);
  --text: #f3f5ff;
  --muted: #acb5d6;
  --soft: #7d87a6;
  --accent: #5865f2;
  --accent-warm: #ffb066;
  --success: #63d3a4;
  --shadow: 0 32px 90px rgba(0, 0, 0, 0.45);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --site-width: min(1120px, calc(100vw - 32px));
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(88, 101, 242, 0.28), transparent 34%),
    radial-gradient(circle at 82% 18%, rgba(255, 176, 102, 0.18), transparent 18%),
    linear-gradient(180deg, #0d1018 0%, #07090f 60%, #05070b 100%);
  color: var(--text);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.5), transparent);
}

.page-shell {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}

.ambient {
  position: fixed;
  width: 36vw;
  height: 36vw;
  border-radius: 50%;
  filter: blur(40px);
  opacity: 0.55;
  pointer-events: none;
}

.ambient-left {
  top: -10vw;
  left: -8vw;
  background: radial-gradient(circle, rgba(88, 101, 242, 0.28), transparent 66%);
}

.ambient-right {
  right: -12vw;
  bottom: -10vw;
  background: radial-gradient(circle, rgba(100, 210, 255, 0.18), transparent 62%);
}

.app {
  position: relative;
  z-index: 1;
  width: var(--site-width);
  margin: 0 auto;
  padding: 48px 0 72px;
}

.hero {
  max-width: 760px;
  margin-bottom: 28px;
  animation: rise-in 500ms ease both;
}

.eyebrow,
.section-kicker {
  margin: 0 0 10px;
  color: var(--accent-warm);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  font-weight: 800;
}

.hero h1 {
  margin: 0;
  font-family: "Oxanium", "Segoe UI", sans-serif;
  font-size: clamp(2.6rem, 6vw, 5.2rem);
  line-height: 0.94;
  letter-spacing: -0.04em;
  text-wrap: balance;
}

.hero-copy {
  max-width: 600px;
  margin: 18px 0 0;
  font-size: 1.08rem;
  line-height: 1.7;
  color: var(--muted);
}

.panel {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(23, 27, 40, 0.98), rgba(14, 18, 28, 0.96));
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  padding: 28px;
  animation: rise-in 600ms ease both;
}

.panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(145deg, rgba(123, 135, 255, 0.08), transparent 32%),
    linear-gradient(325deg, rgba(255, 176, 102, 0.06), transparent 26%);
  pointer-events: none;
}

.panel + .panel {
  margin-top: 22px;
}

.panel-header,
.field-heading,
.result-meta,
.result-output {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.panel-header {
  align-items: flex-start;
  margin-bottom: 20px;
}

.panel h2 {
  margin: 0;
  font-size: 1.45rem;
}

.timezone-pill,
.copy-all-button,
.inline-action,
.copy-button,
.timezone-toggle,
.timezone-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.timezone-pill {
  padding: 10px 14px;
  font-size: 0.85rem;
  color: var(--muted);
}

.input-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 10px;
  grid-column: span 12;
}

.field:first-child,
.field:nth-child(2) {
  grid-column: span 6;
}

.field-label {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--muted);
}

input {
  width: 100%;
  min-height: 56px;
  padding: 14px 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  background: rgba(9, 12, 20, 0.72);
  color: var(--text);
  font: inherit;
  outline: none;
  transition: border-color 160ms ease, transform 160ms ease, background-color 160ms ease;
}

input:hover,
input:focus {
  border-color: rgba(123, 135, 255, 0.66);
  background: rgba(12, 15, 24, 0.92);
}

input:focus {
  transform: translateY(-1px);
  box-shadow: 0 0 0 4px rgba(88, 101, 242, 0.18);
}

input::placeholder {
  color: #808ab1;
}

.timezone-field {
  position: relative;
}

.inline-action,
.copy-all-button,
.copy-button,
.timezone-toggle,
.timezone-chip {
  cursor: pointer;
  font: inherit;
  transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

.inline-action,
.timezone-chip {
  padding: 8px 12px;
  font-size: 0.88rem;
}

.copy-all-button,
.copy-button {
  padding: 10px 14px;
  font-weight: 700;
}

.copy-all-button {
  background: linear-gradient(135deg, rgba(88, 101, 242, 0.28), rgba(123, 135, 255, 0.18));
}

.inline-action:hover,
.copy-all-button:hover,
.copy-button:hover,
.timezone-toggle:hover,
.timezone-chip:hover {
  transform: translateY(-1px);
  border-color: rgba(123, 135, 255, 0.44);
}

.inline-action:focus-visible,
.copy-all-button:focus-visible,
.copy-button:focus-visible,
.timezone-toggle:focus-visible,
.timezone-chip:focus-visible {
  outline: 3px solid rgba(88, 101, 242, 0.28);
  outline-offset: 2px;
}

.timezone-combobox {
  position: relative;
}

.timezone-combobox input {
  padding-right: 60px;
}

.timezone-toggle {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 40px;
  height: 40px;
}

.timezone-toggle span {
  display: block;
  width: 10px;
  height: 10px;
  margin: 0 auto;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
}

.timezone-menu {
  position: absolute;
  z-index: 20;
  top: calc(100% + 12px);
  left: 0;
  right: 0;
  display: grid;
  gap: 14px;
  padding: 16px;
  border: 1px solid rgba(123, 135, 255, 0.2);
  border-radius: var(--radius-lg);
  background: rgba(10, 13, 21, 0.98);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
}

.timezone-menu-header p,
.timezone-empty,
.result-description,
.preview-sub {
  margin: 0;
  color: var(--soft);
}

.timezone-quick-picks {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.timezone-list {
  display: grid;
  gap: 8px;
  max-height: 320px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow: auto;
}

.timezone-option {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  cursor: pointer;
}

.timezone-option:hover,
.timezone-option[aria-selected="true"],
.timezone-option[data-active="true"] {
  border-color: rgba(123, 135, 255, 0.34);
  background: rgba(88, 101, 242, 0.12);
}

.timezone-option-primary {
  font-weight: 700;
}

.timezone-option-secondary {
  font-size: 0.9rem;
  color: var(--soft);
}

.preview-card {
  margin-top: 22px;
  padding: 18px 20px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(88, 101, 242, 0.16), rgba(88, 101, 242, 0.03)),
    rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(123, 135, 255, 0.18);
}

.preview-main {
  margin: 0 0 8px;
  font-size: clamp(1.15rem, 2.6vw, 1.6rem);
  font-weight: 800;
  text-wrap: balance;
}

.error-banner {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 127, 149, 0.1);
  border: 1px solid rgba(255, 127, 149, 0.24);
  color: #ffd7df;
}

.results-grid {
  display: grid;
  gap: 16px;
}

.result-card {
  position: relative;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(15, 18, 28, 0.9), rgba(10, 13, 21, 0.9));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.result-label,
.result-style,
.result-preview {
  margin: 0;
}

.result-label {
  font-weight: 800;
}

.result-style {
  color: var(--accent-warm);
  font-family: "Oxanium", "Segoe UI", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.result-output {
  align-items: stretch;
  margin-top: 14px;
}

.result-code {
  flex: 1;
  display: block;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(4, 6, 10, 0.82);
  border: 1px solid rgba(123, 135, 255, 0.12);
  overflow-x: auto;
  font-size: 0.95rem;
  white-space: nowrap;
}

.copy-button[data-copied="true"],
.copy-all-button[data-copied="true"] {
  color: #08110e;
  background: linear-gradient(135deg, rgba(99, 211, 164, 0.92), rgba(73, 193, 144, 0.92));
  border-color: transparent;
}

.result-preview {
  margin-top: 12px;
  color: var(--muted);
  line-height: 1.6;
}

.hidden {
  display: none !important;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }

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

@media (max-width: 900px) {
  .app {
    padding-top: 32px;
  }

  .panel {
    padding: 22px;
  }

  .panel-header,
  .field-heading,
  .result-meta,
  .result-output {
    flex-direction: column;
    align-items: flex-start;
  }

  .timezone-pill,
  .copy-all-button {
    width: 100%;
    justify-content: center;
  }

  .field:first-child,
  .field:nth-child(2) {
    grid-column: span 12;
  }

  .copy-button {
    width: 100%;
  }
}

@media (max-width: 560px) {
  :root {
    --site-width: min(100vw - 20px, 1120px);
  }

  .hero h1 {
    font-size: clamp(2.2rem, 10vw, 3rem);
  }

  .panel {
    border-radius: 22px;
    padding: 18px;
  }

  .result-card,
  .preview-card {
    padding: 16px;
  }
}