:root {
  --ink: #0c2430;
  --ink-soft: #3a5563;
  --paper: #f3f7f6;
  --panel: rgba(255, 255, 255, 0.86);
  --line: rgba(12, 36, 48, 0.12);
  --teal: #0f6b6d;
  --teal-deep: #0a4a4c;
  --foam: #7ec8c3;
  --warn: #b35a2a;
  --ok: #1f7a4d;
  --shadow: 0 18px 50px rgba(8, 35, 42, 0.14);
  --radius: 14px;
  --font-display: "Barlow Condensed", sans-serif;
  --font-body: "Source Sans 3", sans-serif;
}
* { box-sizing: border-box; }
html, body {
  margin: 0;
  min-height: 100%;
  color: var(--ink);
  font-family: var(--font-body);
  background: var(--paper);
}
.sea {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(126, 200, 195, 0.45), transparent 60%),
    radial-gradient(900px 600px at 100% 0%, rgba(15, 107, 109, 0.22), transparent 55%),
    linear-gradient(160deg, #eaf3f2 0%, #f7f5ef 45%, #e4eef0 100%);
}
.sea::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.28;
  background-image: repeating-linear-gradient(-12deg, transparent 0 18px, rgba(15, 107, 109, 0.045) 18px 19px);
  pointer-events: none;
  animation: drift 28s linear infinite;
}
@keyframes drift { from { transform: translateX(0); } to { transform: translateX(-40px); } }
@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.top {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 1.5rem;
  padding: 1.75rem clamp(1.25rem, 4vw, 3rem) 1rem;
  padding-top: calc(1.75rem + env(safe-area-inset-top, 0px));
  animation: rise 0.7s ease both;
}
.brand-mark {
  margin: 0 0 0.2rem;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 600;
}
.brand h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.4rem, 9vw, 5.6rem);
  line-height: 0.9;
  letter-spacing: 0.04em;
  color: var(--teal-deep);
}
.brand-sub { margin: 0.45rem 0 0; color: var(--ink-soft); font-size: 1.05rem; }
.top-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  align-items: center;
}
.lang-switch {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.7);
}
.lang-btn {
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  font: inherit;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 0.45rem 0.75rem;
  cursor: pointer;
}
.lang-btn.active {
  background: linear-gradient(180deg, #168083, var(--teal-deep));
  color: #f4fffd;
}
.ios-tip {
  position: sticky;
  top: 0;
  z-index: 40;
  padding: calc(0.55rem + env(safe-area-inset-top, 0px)) 0.75rem 0.55rem;
  background: linear-gradient(180deg, rgba(10, 74, 76, 0.96), rgba(12, 36, 48, 0.94));
  color: #f4fffd;
  box-shadow: 0 8px 24px rgba(8, 35, 42, 0.28);
}
.ios-tip-inner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  max-width: 920px;
  margin: 0 auto;
}
.ios-tip-icon { border-radius: 10px; }
.ios-tip-text { flex: 1; min-width: 0; }
.ios-tip-text strong { display: block; font-size: 0.95rem; }
.ios-tip-text p { margin: 0.15rem 0 0; font-size: 0.84rem; color: rgba(244, 255, 253, 0.82); }
.ios-tip-close {
  border: 0;
  background: transparent;
  color: #f4fffd;
  font-size: 1.5rem;
  cursor: pointer;
}
.layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.25rem;
  padding: 0 clamp(1.25rem, 4vw, 3rem) 2rem;
  align-items: start;
}
.panel {
  background: var(--panel);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.15rem 1.25rem 1.35rem;
  animation: rise 0.8s ease both;
}
.preview-panel { animation-delay: 0.08s; position: sticky; top: 1rem; }
fieldset { border: 0; margin: 0 0 1.15rem; padding: 0; }
legend {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  margin-bottom: 0.7rem;
  color: var(--teal-deep);
}
.type-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
}
.type-card {
  display: grid;
  gap: 0.15rem;
  padding: 0.7rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.55);
}
.type-card:has(input:checked) {
  border-color: var(--teal);
  background: linear-gradient(180deg, rgba(126, 200, 195, 0.28), rgba(255, 255, 255, 0.7));
}
.type-card input { position: absolute; opacity: 0; pointer-events: none; }
.type-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.type-desc { font-size: 0.82rem; color: var(--ink-soft); }
.grid { display: grid; gap: 0.75rem; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.one { grid-template-columns: 1fr; }
label, .full { display: grid; gap: 0.28rem; }
label span, .full span { font-size: 0.82rem; font-weight: 600; color: var(--ink-soft); }
input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 0.62rem 0.72rem;
  font: inherit;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.92);
}
input:focus, textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(126, 200, 195, 0.35);
}
.hidden { display: none !important; }
.form-actions, .preview-actions {
  display: flex;
  gap: 0.55rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.preview-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}
.preview-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: 0.03em;
  color: var(--teal-deep);
}
.hint { margin: 0 0 0.7rem; color: var(--ink-soft); font-size: 0.9rem; }
#preview {
  min-height: 28rem;
  resize: vertical;
  font-family: ui-monospace, "Cascadia Code", Menlo, Consolas, monospace;
  font-size: 0.86rem;
  line-height: 1.45;
  background: #0c2430;
  color: #d7efe9;
  border-color: transparent;
}
.btn {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.8);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.55rem 1rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { border-color: rgba(15, 107, 109, 0.4); }
.btn.primary {
  background: linear-gradient(180deg, #168083, var(--teal-deep));
  border-color: transparent;
  color: #f4fffd;
}
.btn.ghost { background: transparent; }
.status { min-height: 1.3rem; margin: 0.55rem 0 0; font-size: 0.9rem; color: var(--ok); }
.foot {
  padding: 0 clamp(1.25rem, 4vw, 3rem) 2rem;
  color: var(--ink-soft);
  font-size: 0.85rem;
}
@media (max-width: 980px) {
  .layout { grid-template-columns: 1fr; }
  .preview-panel { position: static; }
  .type-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .top { flex-direction: column; align-items: start; }
}
@media (max-width: 620px) {
  .grid.two { grid-template-columns: 1fr; }
}