:root {
    --primary: #0F172A;
    --primary-light: #1E293B;
    --accent: #2563EB;
    --accent-hover: #1D4ED8;
    --success: #059669;
    --success-bg: #ECFDF5;
    --warning: #D97706;
    --warning-bg: #FFFBEB;
    --danger: #DC2626;
    --bg-color: #F8FAFC;
    --card-bg: #FFFFFF;
    --text-main: #334155;
    --text-muted: #64748B;
    --border-color: #E2E8F0;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif; background-color: var(--bg-color); color: var(--text-main); line-height: 1.5; }
.container { max-width: 900px; margin: 0 auto; padding: 0 20px; }

.site-header { background-color: var(--primary); color: #FFFFFF; padding: 16px 0; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
.header-container { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.25rem; font-weight: 700; }
.logo i { color: #38BDF8; font-size: 1.4rem; }
.logo small { background: #38BDF8; color: var(--primary); font-size: 0.7rem; padding: 2px 6px; border-radius: 4px; font-weight: 700; }
.header-badge { background: rgba(255, 255, 255, 0.1); padding: 6px 12px; border-radius: 20px; font-size: 0.85rem; font-weight: 500; display: flex; align-items: center; gap: 6px; color: #E2E8F0; }
.header-badge i { color: #34D399; }

.main-content { padding: 40px 0; }
.search-card { background: var(--card-bg); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow-lg); border: 1px solid var(--border-color); margin-bottom: 30px; }
.search-header { margin-bottom: 24px; }
.search-header h1 { font-size: 1.75rem; color: var(--primary); font-weight: 700; margin-bottom: 8px; }
.search-header p { color: var(--text-muted); font-size: 0.95rem; }
.search-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: flex; gap: 12px; align-items: flex-end; }
.form-group { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--primary); display: flex; align-items: center; gap: 6px; }
.form-group label i { color: var(--accent); }
.form-group input, .form-group select { padding: 12px 14px; border: 1px solid var(--border-color); border-radius: 8px; font-size: 0.95rem; font-family: inherit; color: var(--text-main); background: #FFFFFF; }
.form-group input:focus, .form-group select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1); }

.swap-btn-container { display: flex; align-items: flex-end; padding-bottom: 2px; }
#swap-stations { background: #F1F5F9; border: 1px solid var(--border-color); width: 44px; height: 46px; border-radius: 8px; cursor: pointer; color: var(--text-muted); display: flex; align-items: center; justify-content: center; }
#swap-stations:hover { background: #E2E8F0; color: var(--primary); }

.filter-highlight-box { background: #F8FAFC; border: 2px solid #E2E8F0; border-radius: 10px; padding: 20px; display: flex; flex-direction: column; gap: 16px; }
.filter-highlight-box.active-toggle { background: #EFF6FF; border-color: #BFDBFE; }
.toggle-wrapper { display: flex; align-items: flex-start; gap: 16px; }
.toggle-label-text { display: flex; flex-direction: column; }
.toggle-label-text .title { font-weight: 700; color: var(--primary); font-size: 1rem; }
.toggle-label-text .desc { font-size: 0.85rem; color: var(--text-muted); margin-top: 2px; }

.rail-operator-filter { display: flex; align-items: center; gap: 12px; padding-top: 10px; border-top: 1px solid var(--border-color); }
.rail-operator-filter label { font-size: 0.85rem; font-weight: 600; color: var(--text-muted); display: flex; align-items: center; gap: 6px; min-width: 90px; }
.rail-operator-filter select { flex: 1; padding: 8px 12px; border: 1px solid var(--border-color); border-radius: 6px; font-size: 0.9rem; background: #FFFFFF; }

.switch { position: relative; display: inline-block; width: 52px; height: 28px; flex-shrink: 0; margin-top: 2px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #CBD5E1; transition: .3s cubic-bezier(0.4, 0, 0.2, 1); border-radius: 28px; }
.slider:before { position: absolute; content: ""; height: 22px; width: 22px; left: 3px; bottom: 3px; background-color: white; transition: .3s cubic-bezier(0.4, 0, 0.2, 1); border-radius: 50%; box-shadow: 0 2px 4px rgba(0,0,0,0.2); }
input:checked + .slider { background-color: var(--success); }
input:checked + .slider:before { transform: translateX(24px); }

.search-submit-btn { background-color: var(--accent); color: white; border: none; border-radius: 8px; padding: 14px; font-size: 1rem; font-weight: 600; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px; box-shadow: 0 4px 6px rgba(37, 99, 235, 0.2); }
.search-submit-btn:hover { background-color: var(--accent-hover); }

.results-section { margin-top: 30px; }
.results-section.hidden { display: none; }
.results-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 20px; background: var(--card-bg); padding: 20px; border-radius: var(--radius); border: 1px solid var(--border-color); }
.route-summary h2 { font-size: 1.25rem; color: var(--primary); margin-bottom: 4px; }
.badge { background: #E0F2FE; color: #0369A1; padding: 4px 10px; border-radius: 6px; font-size: 0.8rem; font-weight: 600; }
.filter-status-indicator { background: var(--success-bg); color: var(--success); padding: 6px 12px; border-radius: 20px; font-size: 0.85rem; font-weight: 600; display: flex; align-items: center; gap: 6px; }
.filter-status-indicator.inactive { background: #FEF2F2; color: var(--danger); }

.results-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; font-size: 0.9rem; color: var(--text-muted); padding: 0 4px; }
.sort-options { display: flex; align-items: center; gap: 8px; }
.sort-options select { padding: 6px 10px; border: 1px solid var(--border-color); border-radius: 6px; background: #FFFFFF; font-family: inherit; font-size: 0.9rem; }

.train-cards-list { display: flex; flex-direction: column; gap: 16px; }
.train-card { background: var(--card-bg); border-radius: var(--radius); border: 1px solid var(--border-color); padding: 24px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 16px; }
.train-card.advance-ticket { border-left: 5px solid var(--warning); background: #FFFDF9; }
.train-card.flexible-ticket { border-left: 5px solid var(--success); }

.card-top { display: flex; justify-content: space-between; align-items: center; }
.ticket-type-badge { padding: 4px 10px; border-radius: 6px; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; }
.ticket-type-badge.off-peak { background: var(--success-bg); color: var(--success); }
.ticket-type-badge.anytime { background: #EEF2FF; color: #4F46E5; }
.ticket-type-badge.advance { background: var(--warning-bg); color: var(--warning); }
.operator-name { font-size: 0.85rem; font-weight: 600; color: var(--text-muted); }

.card-main { display: flex; justify-content: space-between; align-items: center; }
.journey-times { display: flex; align-items: center; gap: 20px; }
.time-block { display: flex; flex-direction: column; }
.time-block .time { font-size: 1.5rem; font-weight: 700; color: var(--primary); line-height: 1.1; }
.time-block .station { font-size: 0.8rem; color: var(--text-muted); }
.journey-duration { display: flex; flex-direction: column; align-items: center; gap: 4px; min-width: 100px; }
.duration-line { width: 100%; height: 2px; background: var(--border-color); position: relative; }
.duration-line i { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); background: #FFFFFF; padding: 0 6px; color: var(--text-muted); font-size: 0.75rem; }
.duration-text { font-size: 0.75rem; color: var(--text-muted); }

.pricing-block { text-align: right; }
.price { font-size: 1.75rem; font-weight: 700; color: var(--primary); line-height: 1.1; }
.fare-name { font-size: 0.8rem; color: var(--text-muted); }

.card-footer-details { display: flex; justify-content: space-between; align-items: center; padding-top: 12px; border-top: 1px solid var(--border-color); font-size: 0.85rem; }
.flexibility-note { display: flex; align-items: center; gap: 6px; color: var(--success); font-weight: 600; }
.flexibility-note.advance-note { color: var(--warning); }
.select-ticket-btn { background: var(--primary); color: white; border: none; padding: 8px 16px; border-radius: 6px; font-weight: 600; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.select-ticket-btn:hover { background: var(--accent); }

.info-banner { background: #EFF6FF; border: 1px solid #BFDBFE; border-radius: var(--radius); padding: 24px; display: flex; gap: 20px; align-items: flex-start; }
.banner-icon { background: var(--accent); color: white; width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 1.1rem; }
.banner-content h3 { color: #1E3A8A; font-size: 1.05rem; margin-bottom: 6px; }
.banner-content p { color: #1E40AF; font-size: 0.9rem; line-height: 1.6; }

@media(max-width: 768px) {
    .form-row { flex-direction: column; gap: 16px; }
    .swap-btn-container { align-self: center; }
    .card-main { flex-direction: column; align-items: flex-start; gap: 16px; }
    .pricing-block { text-align: left; width: 100%; display: flex; justify-content: space-between; align-items: center; }
    .card-footer-details { flex-direction: column; align-items: flex-start; gap: 10px; }
}