:root {
    --primary: #E3193F; --bg: #050505; --card: #141414;
    --text: #FFFFFF; --text-dim: #8E8E93; --border: #2C2C2E;
    --savings: #4CD964;
}

body { background-color: var(--bg); color: var(--text); font-family: -apple-system, sans-serif; margin: 0; padding: 0; overflow-x: hidden; }

.app-banner {
    width: 100%; height: 260px; 
    background-image: url('banner.jpg'); background-size: cover; background-position: center; position: relative;
}
.banner-overlay {
    position: absolute; bottom: 0; left: 0; right: 0; padding: 40px 20px;
    background: linear-gradient(to top, #050505 10%, rgba(5,5,5,0.6) 40%, transparent 100%);
}
.banner-overlay h1 { font-size: 32px; font-weight: 800; margin: 0; text-shadow: 0 4px 15px rgba(0,0,0,0.9); }
.banner-overlay p { font-size: 13px; color: var(--text-dim); margin-top: 5px; }

.app-container { max-width: 500px; margin: -20px auto 0; position: relative; z-index: 2; padding: 0 16px; box-sizing: border-box; }
.card { background: var(--card); border-radius: 18px; padding: 18px; margin-bottom: 12px; border: 1px solid var(--border); }
.card-header { display: flex; align-items: center; gap: 8px; margin-bottom: 15px; }
.card-header label { font-size: 11px; font-weight: 700; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px; }

.conditional-show { display: none; }

.settings-group { display: flex; flex-direction: column; gap: 10px; }
.setting-item { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.setting-item span { font-size: 13px; color: var(--text-dim); white-space: nowrap; min-width: 65px; }

.node-input, input[type="datetime-local"], select {
    flex: 1; background: #1C1C1E; border: 1px solid var(--border); border-radius: 12px;
    padding: 12px; color: white; font-size: 14px; box-sizing: border-box; color-scheme: dark;
}

.action-row { display: flex; gap: 10px; margin-top: 10px; }
.secondary-btn {
    flex: 1; height: 44px; background: #2C2C2E; color: white; border: none;
    border-radius: 12px; font-size: 13px; display: flex; align-items: center; justify-content: center; gap: 6px;
}
.secondary-btn.active { background: #2C1014; color: var(--primary); border: 1px solid var(--primary); }

.tunnel-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.t-btn {
    background: #1C1C1E; border: 1px solid var(--border);
    padding: 12px 4px; border-radius: 10px; color: #EEE; font-size: 11px; text-align: center; cursor: pointer;
}
.t-btn.active { background: #2C1014; border-color: var(--primary); color: var(--primary); font-weight: bold; }

#map { 
    height: 0; width: 100%; border-radius: 16px; margin: 0; 
    border: none; transition: height 0.4s ease, margin 0.4s ease; overflow: hidden;
}
#map.active { height: 280px; margin: 15px 0; border: 1px solid var(--border); }

.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.stat-card { background: var(--card); padding: 15px; border-radius: 16px; border: 1px solid var(--border); text-align: center; }
.stat-card span { display: block; font-size: 10px; color: var(--text-dim); text-transform: uppercase; }
.stat-card b { font-size: 18px; }

/* 底部導航佈局調整 */
.bottom-nav {
    position: fixed; bottom: 0; left: 0; right: 0;
    background: rgba(10, 10, 10, 0.98); backdrop-filter: blur(25px);
    border-top: 1px solid var(--border); padding: 10px 16px 35px; z-index: 100;
}
.nav-content { 
    max-width: 460px; margin: 0 auto; 
    display: flex; justify-content: space-between; align-items: center; 
}

/* ✅ 改為靠左對齊 */
.total-display-group {
    flex: 1; display: flex; flex-direction: column; 
    align-items: flex-start; /* 改為左對齊 */
    gap: 1px;
}

.label-top { font-size: 10px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.5px; }
.main-currency { font-size: 26px; font-weight: 900; color: var(--primary); line-height: 1.1; }
.savings-bottom { 
    font-size: 11px; color: var(--savings); display: flex; align-items: center; gap: 4px; margin-top: 2px;
}
.savings-bottom .material-icons { font-size: 13px; }

.nav-actions { flex-shrink: 0; }
.primary-btn { 
    padding: 12px 24px; background: var(--primary); color: white; 
    border: none; border-radius: 12px; font-weight: bold; font-size: 14px;
}

.version-tag { 
    position: fixed; right: 15px; bottom: 145px; z-index: 1000;
    font-size: 9px; color: var(--text-dim); background: rgba(0,0,0,0.5); padding: 2px 6px; border-radius: 4px;
}