:root {
  --bg: #0e0e12;
  --sidebar: #111116;
  --panel: #18181f;
  --panel-2: #202028;
  --border: #30303a;
  --text: #f6f4f2;
  --muted: #9c9aaa;
  --orange: #ff6a21;
  --orange-2: #ff864c;
  --purple: #7c4dff;
  --green: #39d98a;
  --shadow: 0 18px 40px rgba(0,0,0,.22);
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
  font-size: 14px;
}
button, input, select { font: inherit; }
button { cursor: pointer; }

.app-shell { min-height: 100vh; display: flex; }
.sidebar {
  width: 232px;
  position: fixed;
  inset: 0 auto 0 0;
  background: var(--sidebar);
  border-right: 1px solid #26262e;
  padding: 22px 15px;
  display: flex;
  flex-direction: column;
  z-index: 20;
}
.brand { display: flex; gap: 11px; align-items: center; padding: 4px 8px 24px; }
.brand-mark {
  width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center;
  font-weight: 900; letter-spacing: -.7px; background: linear-gradient(145deg, var(--orange), #ff9a45);
  box-shadow: 0 8px 28px rgba(255,106,33,.2);
}
.brand strong { display: block; font-size: 14px; letter-spacing: .04em; }
.brand span { display: block; color: var(--muted); font-size: 11px; margin-top: 2px; }
.nav { display: grid; gap: 5px; }
.nav-item {
  border: 0; background: transparent; color: #b9b7c2; padding: 10px 12px; border-radius: 9px;
  text-align: left; display: flex; gap: 10px; align-items: center; font-weight: 600;
}
.nav-item span { width: 17px; color: #777583; }
.nav-item:hover { background: #1a1a20; color: white; }
.nav-item.active { background: #24242d; color: white; box-shadow: inset 2px 0 var(--orange); }
.nav-item.active span { color: var(--orange); }
.sidebar-foot { margin-top: auto; color: #777583; font-size: 11px; padding: 10px 12px; }
.status-dot { width: 6px; height: 6px; background: var(--green); border-radius: 50%; display: inline-block; margin-right: 6px; }

.main { margin-left: 232px; width: calc(100% - 232px); min-height: 100vh; }
.mobile-topbar { display: none; }
.page { display: none; padding: 34px 42px 60px; max-width: 1460px; margin: 0 auto; }
.page.active { display: block; }
.page-head { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 24px; gap: 20px; }
h1 { font-size: clamp(24px, 3vw, 33px); margin: 0 0 7px; letter-spacing: -.035em; }
h2 { letter-spacing: -.025em; }
h3 { margin: 0; font-size: 16px; }
p { color: var(--muted); margin: 0; line-height: 1.55; }
.version-pill { border: 1px solid #34343f; background: #1b1b22; color: #c9c7d0; border-radius: 999px; padding: 6px 10px; font-size: 11px; font-weight: 700; }

.hero-card {
  min-height: 190px; padding: 30px; border: 1px solid #3c2e43; border-radius: 15px;
  background:
    radial-gradient(circle at 75% 20%, rgba(124,77,255,.18), transparent 34%),
    radial-gradient(circle at 18% 100%, rgba(255,106,33,.16), transparent 38%),
    #17161c;
  display: flex; align-items: flex-end; justify-content: space-between; gap: 25px; box-shadow: var(--shadow);
}
.hero-card h2 { font-size: clamp(24px, 3.4vw, 38px); max-width: 720px; margin: 8px 0 10px; }
.eyebrow { color: var(--orange-2); font-size: 10px; font-weight: 800; letter-spacing: .13em; }
.primary, .secondary {
  border-radius: 9px; padding: 10px 16px; font-weight: 800; border: 1px solid transparent;
}
.primary { background: var(--orange); color: #fff; box-shadow: 0 5px 18px rgba(255,106,33,.18); }
.primary:hover { background: var(--orange-2); }
.primary.large { min-height: 44px; padding-inline: 22px; }
.secondary { background: #202029; border-color: #373742; color: #d7d5de; }
.secondary:hover { background: #282832; }

.overview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; margin-top: 18px; }
.panel { border: 1px solid var(--border); background: var(--panel); border-radius: 13px; padding: 20px; }
.panel-head { display: flex; justify-content: space-between; gap: 14px; margin-bottom: 18px; }
.panel-head p { margin-top: 5px; font-size: 12px; }
.tag { font-size: 9px; font-weight: 800; padding: 5px 8px; border-radius: 999px; align-self: flex-start; }
.tag.purple { background: rgba(124,77,255,.12); color: #b79dff; border: 1px solid rgba(124,77,255,.25); }
.empty-state, .empty-page { display: grid; place-items: center; text-align: center; min-height: 180px; color: var(--muted); }
.empty-state span { font-size: 12px; margin-top: 5px; }
.empty-icon { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: #23232c; color: var(--orange); font-size: 22px; margin-bottom: 12px; }
.empty-page { min-height: 360px; }
.empty-page h2 { color: white; margin: 0 0 8px; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid.compact { gap: 10px; }
.form-grid.one-third { grid-template-columns: minmax(220px, 33%); margin-top: 14px; }
.span-2 { grid-column: span 2; }
label { color: #c8c5d0; font-size: 12px; display: grid; gap: 7px; }
input, select {
  width: 100%; min-height: 41px; border: 1px solid #34343e; border-radius: 8px; padding: 9px 11px;
  background: #101015; color: white; outline: none; transition: .18s border, .18s box-shadow;
}
input:focus, select:focus { border-color: rgba(255,106,33,.8); box-shadow: 0 0 0 3px rgba(255,106,33,.08); }
.quick-results { margin-top: 14px; display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.quick-results.three { grid-template-columns: repeat(3, 1fr); }
.quick-results > div { background: #23232b; border: 1px solid #32323b; border-radius: 9px; padding: 12px; min-width: 0; }
.quick-results span { display: block; color: #a5a2b2; font-size: 10px; margin-bottom: 6px; }
.quick-results strong { display: block; font-size: 17px; white-space: nowrap; }

.calculator-layout { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(300px, .75fr); gap: 18px; align-items: start; }
.calc-form { padding: 24px; }
.section-title { display: flex; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
.section-title p { font-size: 12px; margin-top: 5px; }
.section-title.small-gap { margin-bottom: 12px; }
.category-block { margin-top: 26px; padding-top: 22px; border-top: 1px solid #2e2e37; }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.category-card {
  position: relative; min-height: 145px; border: 1px solid #33333e; border-radius: 11px; padding: 15px;
  background: #131319; cursor: pointer; display: flex; flex-direction: column; align-items: flex-start; gap: 8px;
  transition: .18s ease;
}
.category-card:hover { border-color: #555361; transform: translateY(-1px); }
.category-card.selected { border-color: var(--orange); box-shadow: 0 0 0 2px rgba(255,106,33,.08); background: linear-gradient(145deg, rgba(255,106,33,.08), #141419 50%); }
.category-card input { position: absolute; opacity: 0; pointer-events: none; }
.radio-dot { width: 16px; height: 16px; border-radius: 50%; border: 2px solid #64616f; margin-bottom: 3px; }
.category-card.selected .radio-dot { border: 5px solid var(--orange); }
.category-card strong { color: white; font-size: 13px; line-height: 1.35; }
.category-card > span:not(.radio-dot) { color: #c0bdc9; font-size: 11px; }
.category-card small { margin-top: auto; color: #858290; font-size: 10px; }
.category-card small b { color: var(--orange-2); }
.form-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.results-column { display: grid; gap: 12px; }
.result-card { border: 1px solid var(--border); background: var(--panel); border-radius: 13px; padding: 21px; position: relative; overflow: hidden; }
.result-card::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: #51505b; }
.result-card.minimum::before { background: #f1bb3e; }
.result-card.recommended::before { background: var(--orange); }
.result-card span { display: block; color: #a5a2b1; font-size: 10px; font-weight: 800; letter-spacing: .07em; margin-bottom: 8px; }
.result-card strong { display: block; font-size: 28px; letter-spacing: -.035em; margin-bottom: 6px; }
.result-card small { color: #868391; font-size: 10px; line-height: 1.4; }
.breakdown { padding: 0; overflow: hidden; }
.breakdown summary { list-style: none; cursor: pointer; padding: 16px 18px; font-weight: 700; font-size: 12px; }
.breakdown summary::-webkit-details-marker { display: none; }
.breakdown-rows { padding: 0 18px 16px; border-top: 1px solid #2e2e36; }
.breakdown-rows div { display: flex; justify-content: space-between; gap: 16px; padding: 9px 0; border-bottom: 1px solid #292931; font-size: 11px; }
.breakdown-rows span { color: #9996a3; }
.breakdown-rows strong { color: #dedce3; font-size: 11px; }

.settings-form { max-width: 1000px; padding: 24px; }
.settings-section { padding: 0 0 24px; margin-bottom: 24px; border-bottom: 1px solid #2e2e36; }
.settings-section h3 { margin-bottom: 14px; }
.settings-section.highlighted { background: rgba(255,106,33,.045); border: 1px solid rgba(255,106,33,.18); padding: 18px; border-radius: 11px; }
.settings-section.highlighted p { font-size: 11px; margin-top: -7px; }
.settings-note { background: #22222a; border: 1px solid #32323c; padding: 14px; border-radius: 9px; display: grid; gap: 5px; }
.settings-note span { color: var(--muted); font-size: 11px; }
.save-message { color: var(--green); font-size: 11px; margin-top: 12px; min-height: 16px; }
.toast {
  position: fixed; right: 22px; bottom: 22px; z-index: 100; background: #282831; border: 1px solid #42424d; color: white;
  padding: 12px 15px; border-radius: 9px; box-shadow: var(--shadow); transform: translateY(30px); opacity: 0; pointer-events: none; transition: .22s ease;
}
.toast.show { transform: translateY(0); opacity: 1; }
.icon-btn { background: transparent; border: 0; color: white; font-size: 22px; }

@media (max-width: 1060px) {
  .overview-grid { grid-template-columns: 1fr; }
  .calculator-layout { grid-template-columns: 1fr; }
  .results-column { grid-template-columns: repeat(3, 1fr); }
  .breakdown { grid-column: 1 / -1; }
}

@media (max-width: 820px) {
  .sidebar { transform: translateX(-100%); transition: transform .22s ease; box-shadow: 24px 0 50px rgba(0,0,0,.45); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; width: 100%; }
  .mobile-topbar { display: flex; position: sticky; top: 0; z-index: 12; height: 58px; padding: 0 17px; align-items: center; justify-content: space-between; background: rgba(14,14,18,.94); backdrop-filter: blur(10px); border-bottom: 1px solid #282830; }
  .page { padding: 24px 18px 50px; }
  .desktop-only { display: none; }
  .hero-card { align-items: flex-start; flex-direction: column; min-height: 215px; }
  .category-grid { grid-template-columns: 1fr; }
  .category-card { min-height: 118px; }
  .results-column { grid-template-columns: 1fr 1fr 1fr; }
}

@media (max-width: 620px) {
  body { font-size: 13px; }
  .page { padding-inline: 13px; }
  .form-grid, .form-grid.one-third { grid-template-columns: 1fr; }
  .span-2 { grid-column: span 1; }
  .hero-card { padding: 22px; }
  .overview-grid { gap: 12px; }
  .panel { padding: 16px; }
  .quick-results.three, .results-column { grid-template-columns: 1fr; }
  .quick-results.three { gap: 7px; }
  .result-card { padding: 18px; }
  .result-card strong { font-size: 25px; }
  .form-actions { display: grid; grid-template-columns: 1fr; }
  .form-actions button { width: 100%; }
  .calculator-layout { gap: 12px; }
  .calc-form { padding: 16px; }
  .category-block { margin-top: 22px; }
}


.input-note {
  background: #202027;
  border: 1px solid #33333d;
  border-radius: 9px;
  padding: 11px 12px;
  display: grid;
  gap: 4px;
}
.input-note strong { color: #f3f1f7; font-size: 12px; }
.input-note span { color: #918e9d; font-size: 10px; line-height: 1.45; }