/* ── CM to Ring Size Converter ──────────────────────────────────────────── */

.rsc-wrap {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  max-width: 880px;
  margin: 2rem auto;
  background: #fff8f6;
  border: 1.5px solid #fecdd3;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(190,18,60,0.10);
  color: #1c0a0f;
  box-sizing: border-box;
}

/* ── Header ──────────────────────────────────────────────────────────────── */

.rsc__header {
  background: linear-gradient(135deg, #881337 0%, #be123c 45%, #c2410c 100%);
  padding: clamp(1.5rem, 4vw, 2.25rem);
  position: relative;
  overflow: hidden;
}

.rsc__header::after {
  content: '💍';
  position: absolute;
  right: 1.5rem; top: 50%;
  transform: translateY(-50%);
  font-size: 5.5rem;
  opacity: 0.12;
}

.rsc__header h2 {
  font-size: clamp(1.4rem, 4vw, 1.95rem);
  font-weight: 900;
  color: #fff;
  margin: 0 0 0.25rem;
  letter-spacing: -0.01em;
}

.rsc__header p { font-size: 0.93rem; color: #fecdd3; margin: 0; max-width: 560px; }

/* ── Tabs ─────────────────────────────────────────────────────────────────── */

.rsc__tabs {
  display: flex;
  background: #fff;
  border-bottom: 2px solid #fce7f3;
}

.rsc__tab {
  flex: 1;
  padding: 0.85rem 0.5rem;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  font-size: 0.88rem;
  font-weight: 700;
  color: #9f1239;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
}

.rsc__tab:hover  { color: #be123c; }
.rsc__tab.active { color: #be123c; border-bottom-color: #be123c; }

/* ── Panel body ──────────────────────────────────────────────────────────── */

.rsc__panel { padding: clamp(1rem, 3vw, 2rem); }

/* ── Converter form ──────────────────────────────────────────────────────── */

.rsc__measure-label {
  font-size: 0.85rem;
  font-weight: 800;
  color: #9f1239;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 0.75rem;
}

.rsc__toggle-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.rsc__toggle-btn {
  padding: 0.5rem 1.2rem;
  border-radius: 24px;
  border: 2px solid #fecdd3;
  background: #fff;
  color: #9f1239;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s;
}

.rsc__toggle-btn.active {
  background: linear-gradient(135deg, #be123c, #c2410c);
  color: #fff;
  border-color: transparent;
}

.rsc__toggle-btn:hover:not(.active) { background: #fff1f2; }

/* Input area */
.rsc__input-wrap {
  background: #fff;
  border: 1.5px solid #fecdd3;
  border-radius: 14px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.rsc__input-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.85rem;
  align-items: end;
  margin-bottom: 0.85rem;
}

@media (max-width: 500px) { .rsc__input-grid { grid-template-columns: 1fr; } }

.rsc__label {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  color: #be123c;
  margin-bottom: 0.4rem;
}

.rsc__number-input {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 2px solid #fecdd3;
  border-radius: 10px;
  font-size: 1.2rem;
  font-weight: 700;
  color: #1c0a0f;
  background: #fff8f6;
  box-sizing: border-box;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.rsc__number-input:focus {
  outline: none;
  border-color: #be123c;
  box-shadow: 0 0 0 3px rgba(190,18,60,0.15);
  background: #fff;
}

.rsc__unit-toggle { display: flex; gap: 0.4rem; }

.rsc__unit-btn {
  padding: 0.85rem 1.1rem;
  border: 2px solid #fecdd3;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
  background: #fff;
  color: #9f1239;
  transition: all 0.2s;
}

.rsc__unit-btn.active {
  background: #be123c;
  color: #fff;
  border-color: #be123c;
}

.rsc__convert-btn {
  width: 100%;
  padding: 0.9rem;
  background: linear-gradient(135deg, #be123c 0%, #c2410c 100%);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 1.05rem;
  font-weight: 900;
  cursor: pointer;
  letter-spacing: 0.02em;
  transition: filter 0.15s, transform 0.1s;
  box-shadow: 0 4px 16px rgba(190,18,60,0.3);
}

.rsc__convert-btn:hover  { filter: brightness(1.07); }
.rsc__convert-btn:active { transform: scale(0.99); }

.rsc__hint {
  font-size: 0.8rem;
  color: #be9098;
  font-style: italic;
  margin-top: 0.6rem;
}

/* ── Results ──────────────────────────────────────────────────────────────── */

.rsc__result-box {
  background: linear-gradient(135deg, #fff1f2 0%, #fffbeb 100%);
  border: 1.5px solid #fecdd3;
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}

.rsc__result-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.rsc__ring-svg-wrap {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rsc__result-title {
  font-size: 0.75rem;
  font-weight: 800;
  color: #be123c;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.3rem;
}

.rsc__result-us {
  font-size: 2.8rem;
  font-weight: 900;
  color: #881337;
  line-height: 1;
  letter-spacing: -0.02em;
}

.rsc__result-us-label {
  font-size: 0.82rem;
  color: #9f1239;
  font-weight: 600;
}

/* Sizes grid */
.rsc__sizes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.65rem;
  margin-bottom: 1.1rem;
}

@media (max-width: 480px) { .rsc__sizes-grid { grid-template-columns: 1fr 1fr; } }

.rsc__size-cell {
  background: #fff;
  border: 1.5px solid #fecdd3;
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
  text-align: center;
}

.rsc__size-cell .country {
  font-size: 0.7rem;
  font-weight: 700;
  color: #be123c;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.2rem;
}

.rsc__size-cell .val {
  font-size: 1.5rem;
  font-weight: 900;
  color: #881337;
  line-height: 1;
}

/* Measurement row */
.rsc__measure-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.rsc__measure-chip {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 0.5rem 1rem;
  background: #fff;
  border: 1.5px solid #fecdd3;
  border-radius: 10px;
}

.rsc__measure-chip .mlbl { font-size: 0.68rem; font-weight: 700; color: #be123c; text-transform: uppercase; letter-spacing: 0.06em; }
.rsc__measure-chip .mval { font-size: 1.05rem; font-weight: 900; color: #1c0a0f; }

/* Alternative sizes */
.rsc__alts {
  background: #fff;
  border: 1.5px solid #fde8e8;
  border-radius: 10px;
  padding: 0.9rem 1rem;
}

.rsc__alts-title { font-size: 0.78rem; font-weight: 800; color: #be123c; margin-bottom: 0.6rem; text-transform: uppercase; letter-spacing: 0.06em; }

.rsc__alt-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid #fce7f3;
  font-size: 0.85rem;
  color: #374151;
}

.rsc__alt-row:last-child { border-bottom: none; }
.rsc__alt-badge { font-weight: 900; color: #881337; min-width: 40px; }
.rsc__alt-desc  { color: #6b7280; font-size: 0.82rem; }

.rsc__tip {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.85rem 1rem;
  background: #fffbeb;
  border: 1.5px solid #fde68a;
  border-radius: 10px;
  font-size: 0.85rem;
  color: #92400e;
  font-weight: 600;
}

/* ── How to measure ──────────────────────────────────────────────────────── */

.rsc__methods {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 560px) { .rsc__methods { grid-template-columns: 1fr; } }

.rsc__method-card {
  background: #fff;
  border: 1.5px solid #fecdd3;
  border-radius: 14px;
  padding: 1.25rem;
}

.rsc__method-icon { font-size: 2.2rem; margin-bottom: 0.6rem; }
.rsc__method-title { font-size: 1rem; font-weight: 900; color: #881337; margin-bottom: 0.5rem; }

.rsc__step {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  margin-bottom: 0.6rem;
  font-size: 0.87rem;
  color: #374151;
  line-height: 1.5;
}

.rsc__step-num {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, #be123c, #c2410c);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 900;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.rsc__tips-box {
  background: #fff8f6;
  border: 1.5px solid #fecdd3;
  border-radius: 12px;
  padding: 1.1rem 1.25rem;
}

.rsc__tips-box h4 { font-size: 0.9rem; font-weight: 900; color: #881337; margin: 0 0 0.65rem; }

.rsc__tip-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.87rem;
  color: #374151;
  margin-bottom: 0.45rem;
  line-height: 1.4;
}

/* ── Size chart ──────────────────────────────────────────────────────────── */

.rsc__chart-wrap {
  overflow-x: auto;
  border-radius: 12px;
  border: 1.5px solid #fecdd3;
}

.rsc__chart {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.87rem;
  background: #fff;
  min-width: 600px;
}

.rsc__chart th {
  padding: 0.7rem 0.85rem;
  background: linear-gradient(135deg, #be123c, #c2410c);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.rsc__chart td {
  padding: 0.6rem 0.85rem;
  text-align: center;
  border-bottom: 1px solid #fce7f3;
  color: #374151;
  font-weight: 600;
}

.rsc__chart tr:last-child td { border-bottom: none; }
.rsc__chart tr:hover td  { background: #fff1f2; }
.rsc__chart tr.highlighted td { background: #fce7f3; color: #881337; font-weight: 900; }

.rsc__chart-hint {
  font-size: 0.82rem;
  color: #be9098;
  margin-top: 0.75rem;
  font-style: italic;
}

.rsc__section-title {
  font-size: 1.05rem;
  font-weight: 900;
  color: #881337;
  margin: 0 0 1rem;
}

.rsc__empty {
  text-align: center;
  padding: 2rem;
  color: #be9098;
  font-size: 0.95rem;
}