/* tools-racing.css — HKJC Racing Theme */
:root {
  --rc-bg: #0C1F3F;
  --rc-red: #C8102E;
  --rc-gold: #FFD700;
  --rc-card: #142B52;
  --rc-border: #1E3A6E;
  --rc-text: #E8EDF5;
  --rc-muted: #8A9BBF;
  --rc-success: #22C55E;
  --rc-input-bg: #0A1728;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Noto Sans HK', 'PingFang HK', sans-serif; background: var(--rc-bg); color: var(--rc-text); line-height: 1.6; }

/* Header */
.rc-header { background: linear-gradient(135deg, #0C1F3F 0%, #1E3A6E 100%); border-bottom: 3px solid var(--rc-red); padding: 1rem 1.5rem; display: flex; align-items: center; gap: 1rem; }
.rc-header .badge { background: var(--rc-red); color: #fff; font-size: .7rem; font-weight: 700; padding: .2rem .6rem; border-radius: 4px; letter-spacing: .05em; }
.rc-header h1 { font-size: 1.3rem; font-weight: 700; color: var(--rc-gold); }
.rc-header p { font-size: .85rem; color: var(--rc-muted); }

/* Hero */
.rc-hero { background: linear-gradient(135deg, var(--rc-card) 0%, #0C1F3F 100%); padding: 2.5rem 1.5rem; text-align: center; border-bottom: 1px solid var(--rc-border); }
.rc-hero h2 { font-size: 1.8rem; color: var(--rc-gold); margin-bottom: .5rem; }
.rc-hero p { color: var(--rc-muted); font-size: .95rem; max-width: 560px; margin: 0 auto; }

/* Calculator Card */
.rc-calc { max-width: 700px; margin: 2rem auto; padding: 0 1rem; }
.rc-card { background: var(--rc-card); border: 1px solid var(--rc-border); border-radius: 12px; padding: 1.5rem; margin-bottom: 1.5rem; }
.rc-card h3 { color: var(--rc-gold); font-size: 1rem; margin-bottom: 1rem; display: flex; align-items: center; gap: .5rem; }
.rc-card h3::before { content: '▶'; color: var(--rc-red); font-size: .7rem; }

/* Form */
.rc-form-group { margin-bottom: 1rem; }
.rc-form-group label { display: block; font-size: .85rem; color: var(--rc-muted); margin-bottom: .3rem; }
.rc-form-group input, .rc-form-group select { width: 100%; padding: .6rem .8rem; background: var(--rc-input-bg); border: 1px solid var(--rc-border); border-radius: 6px; color: var(--rc-text); font-size: .95rem; }
.rc-form-group input:focus, .rc-form-group select:focus { outline: none; border-color: var(--rc-gold); }
.rc-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* Leg */
.rc-leg { background: var(--rc-input-bg); border: 1px solid var(--rc-border); border-radius: 8px; padding: 1rem; margin-bottom: .75rem; position: relative; }
.rc-leg-num { position: absolute; top: .6rem; left: .8rem; font-size: .7rem; color: var(--rc-gold); font-weight: 700; }
.rc-leg-remove { position: absolute; top: .6rem; right: .8rem; background: none; border: none; color: var(--rc-muted); cursor: pointer; font-size: 1rem; }
.rc-leg-remove:hover { color: var(--rc-red); }

/* Buttons */
.rc-btn { padding: .7rem 1.4rem; border-radius: 8px; border: none; font-size: .95rem; font-weight: 600; cursor: pointer; transition: opacity .15s; }
.rc-btn:hover { opacity: .85; }
.rc-btn-primary { background: var(--rc-red); color: #fff; }
.rc-btn-add { background: var(--rc-border); color: var(--rc-gold); margin-right: .5rem; }
.rc-btn-row { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: .5rem; }

/* Result */
.rc-result { display: none; background: linear-gradient(135deg, #1a2f0a 0%, var(--rc-card) 100%); border: 1px solid var(--rc-success); border-radius: 12px; padding: 1.5rem; margin-top: 1rem; }
.rc-result.show { display: block; }
.rc-result-row { display: flex; justify-content: space-between; padding: .4rem 0; border-bottom: 1px solid var(--rc-border); font-size: .95rem; }
.rc-result-row:last-child { border-bottom: none; }
.rc-result-row .label { color: var(--rc-muted); }
.rc-result-row .value { color: var(--rc-text); font-weight: 600; }
.rc-result-row .value.highlight { color: var(--rc-gold); font-size: 1.1rem; }

/* Tabs */
.rc-tabs { display: flex; gap: .5rem; margin-bottom: 1rem; flex-wrap: wrap; }
.rc-tab { padding: .5rem 1rem; background: var(--rc-border); border: none; border-radius: 6px; color: var(--rc-muted); cursor: pointer; font-size: .9rem; }
.rc-tab.active { background: var(--rc-red); color: #fff; }

/* Prob Table */
.rc-prob-table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.rc-prob-table th { background: var(--rc-border); color: var(--rc-gold); padding: .5rem .75rem; text-align: left; }
.rc-prob-table td { padding: .5rem .75rem; border-bottom: 1px solid var(--rc-border); }
.rc-prob-table tr:last-child td { border-bottom: none; }
.rc-prob-table .ev-pos { color: var(--rc-success); }
.rc-prob-table .ev-neg { color: #EF4444; }

/* FAQ */
.rc-faq { max-width: 700px; margin: 2rem auto; padding: 0 1rem; }
.rc-faq h2 { color: var(--rc-gold); margin-bottom: 1rem; }
.rc-faq details { background: var(--rc-card); border: 1px solid var(--rc-border); border-radius: 8px; padding: 1rem; margin-bottom: .75rem; }
.rc-faq summary { cursor: pointer; font-weight: 600; color: var(--rc-text); }
.rc-faq details p { color: var(--rc-muted); margin-top: .5rem; font-size: .9rem; line-height: 1.7; }

/* SEO content */
.rc-content { max-width: 700px; margin: 2rem auto; padding: 0 1rem 3rem; }
.rc-content h2 { color: var(--rc-gold); margin-bottom: .75rem; }
.rc-content p { color: var(--rc-muted); font-size: .9rem; line-height: 1.8; margin-bottom: 1rem; }

/* Embed */
.rc-embed { max-width: 700px; margin: 2rem auto; padding: 0 1rem; }
.rc-embed h3 { color: var(--rc-muted); font-size: .9rem; margin-bottom: .5rem; }
.rc-embed pre { background: #000; color: #aef; padding: 1rem; border-radius: 6px; font-size: .8rem; overflow-x: auto; }

/* Responsive */
@media (max-width: 500px) {
  .rc-form-row { grid-template-columns: 1fr; }
  .rc-hero h2 { font-size: 1.4rem; }
}

/* RELATED TOOLS */
.rc-related { max-width: 860px; margin: 24px auto 0; padding: 0 20px; }
.rc-related h2 { font-size: 16px; font-weight: 700; margin-bottom: 12px; color: var(--rc-gold); }
.rc-related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 10px; }
.rc-related a { background: var(--rc-card); border: 1px solid var(--rc-border); border-radius: 10px; padding: 12px 14px; font-size: 13px; font-weight: 700; color: var(--rc-text); text-decoration: none; transition: border-color .2s; display: block; }
.rc-related a:hover { border-color: var(--rc-gold); }
@media (max-width: 600px) { .rc-related-grid { grid-template-columns: 1fr 1fr; } }