body { margin: 0; background: #F2F2F7; font-family: -apple-system, sans-serif; padding-bottom: 40px; }
.app-header { background: #fff; padding: 20px; border-bottom: 1px solid #E5E5EA; }
.rate-display-section { text-align: center; padding: 25px 0; }
.rate-big { font-size: 64px; font-weight: 900; color: #007AFF; letter-spacing: -2px; line-height: 1; }
.rate-sub { font-size: 16px; color: #8E8E93; font-weight: bold; margin-top: 10px; }
.rate-time { font-size: 13px; color: #AEAEB2; margin-top: 8px; }

.selection-area { display: flex; flex-direction: column; gap: 10px; margin-top: 10px; }
.main-selector, .lang-blue-selector { width: 100%; padding: 15px; border-radius: 12px; border: 1px solid #E5E5EA; background: #F2F2F7; font-size: 16px; font-weight: bold; appearance: none; }
.lang-blue-selector { border: 2.5px solid #007AFF; color: #007AFF; background: #fff; }

.mobile-tabs { display: flex; background: #fff; position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid #eee; }
.tab-btn { flex: 1; padding: 18px 0; border: none; background: none; color: #8E8E93; font-weight: bold; font-size: 15px; }
.tab-btn.active { color: #007AFF; border-bottom: 4px solid #007AFF; }
.tab-content { display: none; }
.tab-content.active { display: block; }

.card { background: #fff; border-radius: 20px; padding: 20px; margin: 15px; box-shadow: 0 4px 15px rgba(0,0,0,0.05); }

/* 번역기 개선 */
.trans-input { width: 100%; min-height: 120px; border: 1px solid #E5E5EA; border-radius: 12px; padding: 15px; font-size: 16px; margin-bottom: 10px; box-sizing: border-box; }
.trans-output-box { background: #F2F2F7; padding: 15px; border-radius: 12px; margin-bottom: 10px; font-weight: bold; color: #007AFF; border-left: 5px solid #007AFF; }
.trans-btn-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.btn-primary { background: #007AFF; color: #fff; border: none; padding: 15px; border-radius: 12px; font-weight: bold; }
.btn-success { background: #34C759; color: #fff; border: none; padding: 15px; border-radius: 12px; font-weight: bold; }

/* 계산기 개선 */
.calc-box-improved { background: #F2F2F7; padding: 15px; border-radius: 15px; }
.calc-row { display: flex; align-items: center; background: #fff; padding: 12px; border-radius: 10px; }
.currency-label { width: 60px; font-weight: bold; color: #8E8E93; }
.calc-input, .calc-output { border: none; width: 100%; font-size: 24px; font-weight: bold; outline: none; }
.calc-arrow { text-align: center; margin: 8px 0; color: #007AFF; }

/* 리스트 디자인 */
.shopping-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.shop-item { background: #fff; border: 1px solid #E5E5EA; padding: 15px; border-radius: 12px; text-align: center; text-decoration: none; color: #1c1c1e; font-weight: bold; }
.phrase-card { margin: 15px; background: #fff; border-radius: 20px; padding: 20px; }
.phrase-header { color: #007AFF; font-weight: bold; margin-bottom: 10px; border-bottom: 1px solid #F2F2F7; padding-bottom: 5px; }
.txt-ko { font-weight: bold; margin: 0; }
.txt-local { color: #636366; font-size: 14px; margin-top: 4px; }