/* css/style.css - 臺灣銀行人民幣換算系統 (黑金奢華旗艦風格 / Gold Luxury Edition) */

:root {
  --gold-100: #fef9c3;
  --gold-200: #fef08a;
  --gold-300: #fde047;
  --gold-400: #facc15;
  --gold-500: #eab308;
  --gold-600: #ca8a04;
  --gold-700: #a16207;
  --gold-metallic: linear-gradient(135deg, #fce997 0%, #d4af37 40%, #aa771c 75%, #e5c158 100%);
  --gold-btn: linear-gradient(135deg, #f7d560 0%, #d4af37 50%, #b8860b 100%);
  --gold-glow: 0 0 25px rgba(212, 175, 55, 0.25);
  
  --bg-dark: #0a0c10;
  --card-dark: rgba(18, 22, 31, 0.85);
  --card-border: rgba(212, 175, 55, 0.28);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans TC", sans-serif;
  background-color: var(--bg-dark);
  background-image: 
    radial-gradient(circle at 50% -10%, rgba(212, 175, 55, 0.18) 0%, transparent 60%),
    radial-gradient(circle at 10% 40%, rgba(180, 130, 20, 0.08) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(212, 175, 55, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, #0d1017 0%, #08090d 100%);
  background-attachment: fixed;
  min-height: 100vh;
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

/* 金色金屬漸層文字 */
.text-gold-gradient {
  background: linear-gradient(135deg, #fff2b2 0%, #f5d77f 30%, #d4af37 70%, #aa771c 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gold-bright {
  color: #fce183;
}

/* 奢華金黑玻璃擬態卡片 */
.glass-card {
  background: var(--card-dark);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  box-shadow: 0 16px 36px -10px rgba(0, 0, 0, 0.6), 0 0 20px -5px rgba(212, 175, 55, 0.08);
}

.glass-card:hover {
  border-color: rgba(212, 175, 55, 0.45);
  box-shadow: 0 18px 40px -10px rgba(0, 0, 0, 0.7), 0 0 25px -3px rgba(212, 175, 55, 0.15);
  transition: all 0.3s ease;
}

/* 報表結算卡片 - 金色封裝 */
.report-card {
  background: linear-gradient(180deg, rgba(24, 29, 41, 0.95) 0%, rgba(15, 18, 26, 0.98) 100%);
  border: 1px solid rgba(212, 175, 55, 0.4);
  box-shadow: 0 20px 45px -12px rgba(0, 0, 0, 0.8), 0 0 30px rgba(212, 175, 55, 0.12);
  position: relative;
}

.report-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gold-metallic);
  border-top-left-radius: 1rem;
  border-top-right-radius: 1rem;
}

/* 金色實心按鈕 */
.btn-gold {
  background: var(--gold-btn);
  color: #1a1300;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.35);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-gold:hover {
  background: linear-gradient(135deg, #ffe066 0%, #dfb841 50%, #c49114 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
}

.btn-gold:active {
  transform: translateY(0);
}

/* 金色邊框按鈕 */
.btn-gold-outline {
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.35);
  color: #fce183;
  transition: all 0.15s ease-in-out;
}

.btn-gold-outline:hover {
  background: rgba(212, 175, 55, 0.18);
  border-color: #d4af37;
  color: #ffffff;
}

/* 金融極致美型等寬數字 (JetBrains Mono + OpenType Tabular Numbers) */
.font-mono-num {
  font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-variant-numeric: tabular-nums lining-nums;
  font-feature-settings: "tnum" on, "lnum" on, "zero" on;
  letter-spacing: -0.015em;
}

/* 輸入框強調與數字美化 */
.currency-input {
  font-family: 'JetBrains Mono', ui-monospace, monospace !important;
  font-variant-numeric: tabular-nums lining-nums;
  font-feature-settings: "tnum" on, "lnum" on;
  letter-spacing: 0.01em;
  background-color: rgba(11, 14, 20, 0.8) !important;
  color: #fef08a !important;
  border: 1.5px solid rgba(212, 175, 55, 0.35);
}

.currency-input:focus {
  outline: none;
  border-color: #facc15;
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.25), 0 0 15px rgba(212, 175, 55, 0.15);
}

/* 核心實得金額震撼字型特效 */
#rep-final-twd {
  letter-spacing: -0.035em;
  text-shadow: 0 0 25px rgba(250, 204, 21, 0.3);
  font-feature-settings: "tnum" on, "lnum" on;
}

/* 快捷按鈕 */
.quick-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(212, 175, 55, 0.25);
  color: #fef08a;
  transition: all 0.15s ease-in-out;
}

.quick-btn:hover {
  background: rgba(212, 175, 55, 0.2);
  border-color: rgba(212, 175, 55, 0.6);
  color: #ffffff;
  transform: translateY(-1px);
}

/* 抖動動畫 */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-8px); }
  40%, 80% { transform: translateX(8px); }
}

.shake-animation {
  animation: shake 0.4s ease-in-out;
}

/* Toast 提示 */
#toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  animation: slideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* 滾動條美化 */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: #0d1017;
}
::-webkit-scrollbar-thumb {
  background: #334155;
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: #d4af37;
}