:root {
--bg: #0a0c0f;
--surface: #111418;
--surface2: #181c22;
--surface3: #1e242d;
--border: #252b36;
--border2: #2e3745;
--accent: #e8ff40;
--accent2: #40ffb8;
--orange: #ff9d3a;
--text: #e8ecf0;
--text2: #8a94a0;
--text3: #505a66;
--red: #ff4444;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { background: var(--bg); color: var(--text); font-family: 'Syne', sans-serif; min-height: 100vh; overflow-x: hidden; }
body::before {
content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 0;
background-image: linear-gradient(rgba(232,255,64,0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(232,255,64,0.025) 1px, transparent 1px);
background-size: 40px 40px;
}
.container { max-width: 960px; margin: 0 auto; padding: 40px 24px; position: relative; z-index: 1; }
header { margin-bottom: 40px; }
h1 { font-size: clamp(28px, 5vw, 52px); font-weight: 800; line-height: 1.0; letter-spacing: -0.03em; }
h1 span { color: var(--accent); }
.subtitle { margin-top: 12px; color: var(--text2); font-size: 13px; font-family: 'JetBrains Mono', monospace; font-weight: 300; }

/* 3-column top row */
.top-row { display: grid; grid-template-columns: 1.05fr 0.95fr 1.3fr; gap: 18px; margin-bottom: 18px; align-items: start; }

/* Panel variants */
.panel, .panel-full {
background: var(--surface); border: 1px solid var(--border);
border-radius: 12px; padding: 24px;
}
.panel-full { margin-bottom: 18px; }

.panel-title {
font-size: 10px; font-family: 'JetBrains Mono', monospace; color: var(--text3);
letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 18px;
display: flex; align-items: center; gap: 10px;
}
.panel-title::after { content: ''; flex: 1; height: 1px; background: var(--border); }

.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }

label { display: block; font-size: 10px; font-family: 'JetBrains Mono', monospace; color: var(--text2); margin-bottom: 6px; letter-spacing: 0.05em; text-transform: uppercase; }

/* Inline-unit wrapper — unit sits inside the input on the right */
.input-unit-wrap { position: relative; display: flex; align-items: center; }
.input-unit-wrap input[type="number"] { padding-right: 44px; width: 100%; }
.input-unit-inline {
position: absolute; right: 11px;
font-family: 'JetBrains Mono', monospace; font-size: 10px;
color: var(--text3); pointer-events: none; letter-spacing: 0.04em; white-space: nowrap;
}

input[type="number"], select {
width: 100%; background: var(--surface2); border: 1px solid var(--border2);
border-radius: 6px; color: var(--text); font-family: 'JetBrains Mono', monospace;
font-size: 15px; font-weight: 500; padding: 10px 14px; outline: none;
transition: border-color 0.15s; -moz-appearance: textfield;
}
select {
cursor: pointer; appearance: none;
background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23505a66'/%3E%3C/svg%3E");
background-repeat: no-repeat; background-position: right 14px center; padding-right: 32px;
}
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; }
input[type="number"]:focus, select:focus { border-color: var(--accent); }

/* Model info bar */
.model-info-bar { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); }
.model-badge { font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: 0.06em; padding: 3px 8px; border-radius: 4px; display: flex; align-items: center; gap: 4px; background: var(--surface2); border: 1px solid var(--border); }
.model-badge .badge-label { color: var(--text3); }
.model-badge .badge-val { color: var(--accent2); font-weight: 500; }

/* Sliders */
.slider-row-label { display: flex; align-items: center; gap: 6px; font-family: 'JetBrains Mono', monospace; font-size: 10px; font-weight: 500; letter-spacing: 0.04em; }
.slider-row { display: flex; align-items: center; }
input[type="range"] { width: 100%; -webkit-appearance: none; appearance: none; height: 4px; border-radius: 2px; outline: none; cursor: pointer; background: linear-gradient(90deg, var(--accent2), var(--orange)); }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 16px; height: 16px; border-radius: 50%; background: var(--text); border: 3px solid var(--bg); cursor: pointer; box-shadow: 0 0 0 2px var(--accent); }
.slider-section + .slider-section { margin-top: 18px; padding-top: 18px; border-top: 1px solid var(--border); }
.slider-section-title { font-family: 'JetBrains Mono', monospace; font-size: 9px; color: var(--text3); letter-spacing: 0.12em; text-transform: uppercase; margin-top: 14px; }

/* Tooltip */
.tip-anchor { display: inline-flex; align-items: center; justify-content: center; width: 14px; height: 14px; border-radius: 50%; border: 1px solid var(--border2); font-family: 'JetBrains Mono', monospace; font-size: 9px; color: var(--text3); cursor: default; position: relative; flex-shrink: 0; transition: border-color 0.15s, color 0.15s; }
.tip-anchor:hover { border-color: var(--accent2); color: var(--accent2); }
.tip-anchor::after { content: attr(data-tip); position: absolute; bottom: calc(100% + 8px); left: 50%; transform: translateX(-50%); width: 220px; background: var(--surface3); border: 1px solid var(--border2); border-radius: 6px; padding: 8px 10px; font-size: 10px; line-height: 1.55; color: var(--text2); white-space: normal; pointer-events: none; opacity: 0; transition: opacity 0.15s; z-index: 100; }
.tip-anchor:hover::after { opacity: 1; }

/* Stops */
.stops-list { display: flex; flex-direction: column; gap: 14px; margin-bottom: 14px; }
.stop-row { display: grid; grid-template-columns: 1fr 1fr 1fr auto; gap: 12px; align-items: start; background: var(--surface2); border: 1px solid var(--border); border-radius: 8px; padding: 20px 14px 14px; position: relative; margin-top: 10px;}
.stop-number { position: absolute; top: -10px; left: 14px; background: var(--surface2); border: 1px solid var(--border2); border-radius: 4px; font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--accent); padding: 1px 8px; letter-spacing: 0.1em; }
.btn-remove { background: none; border: 1px solid var(--border2); border-radius: 6px; color: var(--text3); cursor: pointer; padding: 10px 14px; font-size: 16px; line-height: 1; transition: all 0.15s; align-self: end; }
.btn-remove:hover { border-color: var(--red); color: var(--red); }

/* Add stop — highlighted by default */
.btn-add {
background: rgba(232,255,64,0.07); border: 1px dashed var(--accent);
border-radius: 8px; color: var(--accent); cursor: pointer; padding: 12px 20px;
font-family: 'Syne', sans-serif; font-size: 13px; font-weight: 700;
transition: background 0.15s; width: 100%; text-align: center; letter-spacing: 0.05em;
}
.btn-add:hover { background: rgba(232,255,64,0.14); }

.btn-calculate {
background: var(--accent); border: none; border-radius: 8px; color: #0a0c0f;
cursor: pointer; padding: 16px 40px; font-family: 'Syne', sans-serif; font-size: 15px;
font-weight: 800; letter-spacing: 0.05em; transition: all 0.15s; display: block;
width: 100%; text-transform: uppercase; margin-bottom: 20px;
}
.btn-calculate:hover { background: #f5ff70; transform: translateY(-1px); }
.btn-calculate:active { transform: translateY(0); }
.btn-calculate:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

/* Results */
#results { display: none; }
.warning-box { background: rgba(255,68,68,0.08); border: 1px solid rgba(255,68,68,0.3); border-radius: 8px; padding: 14px 18px; font-family: 'JetBrains Mono', monospace; font-size: 12px; color: var(--red); margin-bottom: 16px; line-height: 1.6; }
.big-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 12px; margin-bottom: 12px; }
.stat-box { background: var(--surface2); border: 1px solid var(--border); border-radius: 8px; padding: 16px; text-align: center; }
.stat-value { font-family: 'JetBrains Mono', monospace; font-size: 22px; font-weight: 500; color: var(--accent); line-height: 1; margin-bottom: 4px; }
.stat-label { font-size: 9px; color: var(--text3); text-transform: uppercase; letter-spacing: 0.1em; font-family: 'JetBrains Mono', monospace; }
.skipped-notice { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text3); padding: 10px 14px; background: var(--surface2); border-radius: 6px; border: 1px solid var(--border); line-height: 1.6; }
.skipped-notice .hl { color: var(--orange); }
.skipped-notice .used { color: var(--accent2); }
.segments { display: flex; flex-direction: column; }
.segment { display: flex; gap: 16px; }
.seg-timeline { display: flex; flex-direction: column; align-items: center; flex-shrink: 0; width: 28px; }
.seg-dot { width: 11px; height: 11px; border-radius: 50%; background: var(--accent); border: 2px solid var(--bg); flex-shrink: 0; margin-top: 5px; z-index: 1; }
.seg-dot.charge { background: var(--accent2); }
.seg-dot.end { background: var(--text2); }
.seg-line { flex: 1; width: 2px; background: var(--border2); margin: 2px 0; min-height: 20px; }
.seg-content { flex: 1; padding-bottom: 20px; }
.seg-card { background: var(--surface2); border: 1px solid var(--border); border-radius: 8px; padding: 16px 20px; }
.seg-card.drive-card { border-left: 3px solid var(--accent); }
.seg-card.charge-card { border-left: 3px solid var(--accent2); }
.seg-card.detour-card { border-left: 3px solid var(--orange); margin-top: 8px; }
.seg-title { font-size: 13px; font-weight: 700; margin-bottom: 10px; display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.seg-badge { font-size: 9px; font-family: 'JetBrains Mono', monospace; padding: 2px 8px; border-radius: 4px; font-weight: 500; letter-spacing: 0.1em; white-space: nowrap; }
.badge-drive { background: rgba(232,255,64,0.12); color: var(--accent); }
.badge-charge { background: rgba(64,255,184,0.12); color: var(--accent2); }
.badge-detour { background: rgba(255,157,58,0.12); color: var(--orange); }
.seg-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(96px, 1fr)); gap: 8px; }
.metric { background: var(--surface3); border-radius: 6px; padding: 8px 10px; }
.metric-val { font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 500; color: var(--text); }
.metric-key { font-family: 'JetBrains Mono', monospace; font-size: 9px; color: var(--text3); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 2px; }
.soc-track { margin-top: 10px; height: 4px; background: var(--surface3); border-radius: 2px; overflow: hidden; }
.soc-fill { height: 100%; border-radius: 2px; }
.soc-labels { display: flex; justify-content: space-between; font-family: 'JetBrains Mono', monospace; font-size: 9px; color: var(--text3); margin-top: 3px; }
.physics-note { font-family: 'JetBrains Mono', monospace; font-size: 9px; color: var(--text3); text-align: center; margin-top: 16px; line-height: 1.5; }
.btn-export { background: none; border: 1px solid var(--border2); border-radius: 8px; color: var(--text2); cursor: pointer; padding: 12px 28px; font-family: 'Syne', sans-serif; font-size: 13px; font-weight: 700; letter-spacing: 0.05em; transition: all 0.15s; text-transform: uppercase; }
.btn-export:hover { border-color: var(--accent2); color: var(--accent2); }

@media (max-width: 760px) { .top-row { grid-template-columns: 1fr; } }
@media (max-width: 580px) {
.grid-3 { grid-template-columns: 1fr 1fr; }
.stop-row { grid-template-columns: 1fr 1fr; }
.stop-row .btn-remove { grid-column: span 2; }
}
@media (max-width: 380px) { .grid-3 { grid-template-columns: 1fr; } }