:root {
  --ink: #0d1b2a;
  --paper: #f8f6f1;
  --signal: #ef5b2c;
  --accent: #2a9d8f;
  --deep: #1f6f78;
  --soft: #fffefb;
  --line: #d5d7cf;
  --shadow: 0 18px 45px rgba(13, 27, 42, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "DM Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 20%, rgba(239, 91, 44, 0.16), transparent 30%),
    radial-gradient(circle at 80% 80%, rgba(42, 157, 143, 0.2), transparent 35%),
    linear-gradient(150deg, #f0ede3 0%, #fffdf7 45%, #edf7f5 100%);
  padding: clamp(1rem, 3vw, 2.5rem);
}

.app-shell {
  width: min(980px, 100%);
  margin: 0 auto;
  display: grid;
  gap: 1rem;
}

.card {
  background: linear-gradient(170deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.85));
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: clamp(1rem, 2vw, 1.6rem);
  animation: rise-in 0.7s ease both;
}

.title-block {
  animation-delay: 0.05s;
}

.converter {
  animation-delay: 0.15s;
}

.chart-wrap {
  animation-delay: 0.2s;
}

.table-wrap {
  animation-delay: 0.25s;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--deep);
  font-size: 0.8rem;
}

h1 {
  margin: 0.35rem 0 0.55rem;
  font-family: "Bebas Neue", Impact, sans-serif;
  letter-spacing: 0.04em;
  font-size: clamp(2rem, 6vw, 3.2rem);
  line-height: 0.95;
}

.subtitle {
  margin: 0;
  max-width: 65ch;
  font-size: 1rem;
  line-height: 1.45;
}

.converter {
  display: grid;
  gap: 1rem;
  align-items: start;
}

label {
  font-weight: 700;
  display: inline-block;
  margin-bottom: 0.45rem;
}

.input-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

input[type="number"] {
  flex: 1 1 240px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.78rem 0.9rem;
  font: inherit;
  font-size: 1rem;
  outline: none;
  background: var(--soft);
}

select {
  flex: 1 1 220px;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.78rem 0.9rem;
  font: inherit;
  font-size: 1rem;
  outline: none;
  background: var(--soft);
}

input[type="number"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.2);
}

select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.2);
}

button {
  border: 0;
  border-radius: 12px;
  padding: 0.78rem 1rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.16s ease, filter 0.16s ease;
}

button:hover {
  transform: translateY(-1px);
  filter: brightness(1.02);
}

button:active {
  transform: translateY(0);
}

.primary {
  background: linear-gradient(140deg, #ef5b2c, #f2844b);
  color: #fff;
}

.ghost {
  background: #f0f2ee;
  color: #243447;
}

.hint {
  margin: 0.7rem 0 0;
  color: #415363;
  font-size: 0.93rem;
}

.result {
  border: 1px solid rgba(13, 27, 42, 0.08);
  border-radius: 14px;
  padding: 1rem;
  background: linear-gradient(160deg, rgba(42, 157, 143, 0.08), rgba(239, 91, 44, 0.07));
}

.result-label {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #274a57;
  font-weight: 700;
  font-size: 0.78rem;
}

.result-value {
  margin: 0.35rem 0 0;
  font-size: clamp(1.8rem, 8vw, 3rem);
  font-family: "Bebas Neue", Impact, sans-serif;
  letter-spacing: 0.05em;
  color: #11253a;
}

.result-meta {
  margin: 0.2rem 0 0;
  color: #304052;
}

.reaction-comment {
  min-height: 2.5rem;
  margin: 0.6rem 0 0;
  padding: 0.62rem 0.7rem;
  border-radius: 10px;
  border: 1px dashed rgba(31, 111, 120, 0.35);
  background: rgba(31, 111, 120, 0.08);
  color: #17374d;
  font-weight: 700;
  line-height: 1.35;
}

.reaction-comment.comment-pop {
  animation: comment-pop 0.45s cubic-bezier(0.21, 0.87, 0.4, 1.15);
}

.store-message {
  min-height: 1.15rem;
  margin: 0.5rem 0 0;
  color: #0f766e;
  font-weight: 700;
}

.error {
  min-height: 1.15rem;
  margin: 0.5rem 0 0;
  color: #b42318;
  font-weight: 700;
}

h2 {
  margin: 0 0 0.8rem;
  font-family: "Bebas Neue", Impact, sans-serif;
  letter-spacing: 0.03em;
  font-size: clamp(1.4rem, 4.5vw, 2rem);
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.chart-header h2 {
  margin: 0;
}

.chart-subtitle {
  margin: 0.55rem 0 0;
  color: #385066;
}

.chart-area {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 0.8rem;
  align-items: start;
}

.range-scale {
  margin: 0;
  padding: 0;
  list-style: none;
  height: 220px;
  display: grid;
  grid-template-rows: repeat(5, 1fr);
  color: #4f6677;
  font-size: 0.82rem;
  font-weight: 700;
}

.range-scale-duplicate {
  display: none;
}

.range-scale li {
  display: flex;
  justify-content: flex-end;
  align-items: flex-end;
  position: relative;
  line-height: 1;
}

.range-scale li::after {
  content: "";
  position: absolute;
  right: -0.55rem;
  bottom: 0;
  width: 0.45rem;
  height: 1px;
  background: rgba(31, 56, 72, 0.26);
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 1rem;
  align-items: end;
}

.bar-column {
  display: grid;
  justify-items: center;
  gap: 0.32rem;
  width: 100%;
}

.bar-with-scale {
  width: 100%;
  display: flex;
  justify-content: center;
}

.bar-track {
  width: min(150px, 100%);
  height: 220px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(
      to top,
      rgba(35, 60, 75, 0.06),
      rgba(35, 60, 75, 0.06) 1px,
      transparent 1px,
      transparent 25%
    ),
    linear-gradient(180deg, #fbfcf9, #f1f4ef);
  display: flex;
  align-items: flex-end;
  padding: 0.4rem;
}

.bar {
  width: 100%;
  min-height: 6px;
  height: 2%;
  border-radius: 10px 10px 8px 8px;
  opacity: 0.25;
  transition: height 0.45s ease, opacity 0.3s ease;
}

.bar.has-data {
  opacity: 1;
}

.bar-14 {
  background: linear-gradient(180deg, #2a9d8f, #1f6f78);
}

.bar-15 {
  background: linear-gradient(180deg, #ef5b2c, #c24a22);
}

.bar-label {
  margin: 0;
  font-weight: 700;
}

.bar-value {
  margin: 0;
  color: #203b4a;
  font-weight: 700;
}

.bar-count {
  margin: 0;
  color: #456072;
  font-size: 0.9rem;
}

.chart-difference {
  margin: 0.8rem 0 0;
  font-weight: 700;
  color: #203646;
}

.table-scroll {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--line);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  min-width: 540px;
}

th,
td {
  padding: 0.62rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid #ecece8;
}

th {
  background: #f5f5f0;
  color: #324759;
  font-size: 0.9rem;
}

tbody tr:nth-child(even) {
  background: #fafaf7;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes comment-pop {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
  70% {
    opacity: 1;
    transform: translateY(0) scale(1.02);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (min-width: 760px) {
  .converter {
    grid-template-columns: 1fr 320px;
    gap: 1.2rem;
  }
}

@media (max-width: 759px) {
  button {
    flex: 1 1 auto;
  }

  .result {
    margin-top: 0.25rem;
  }

  .chart-area {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .range-scale-shared {
    display: none;
  }

  .range-scale-duplicate {
    display: grid;
  }

  .range-scale {
    height: 220px;
    grid-template-rows: repeat(5, 1fr);
    grid-template-columns: none;
  }

  .range-scale li {
    justify-content: flex-end;
    align-items: flex-end;
  }

  .range-scale li::after {
    display: block;
  }

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

  .bar-with-scale {
    display: grid;
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 0.65rem;
    align-items: start;
  }

  .bar-track {
    width: 100%;
    max-width: 280px;
  }
}