/* NetLandPro — style.css | Production-grade UI */

/* ── CSS Custom Properties ──────────────────────────────── */
:root {
  --radius-xs:  6px;
  --radius-sm:  10px;
  --radius:     14px;
  --radius-lg:  20px;
  --radius-xl:  28px;
  --transition: 0.18s ease;
  --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);

  /* Brand colors (theme-independent) */
  --blue:       #3b82f6;
  --blue-dark:  #1d4ed8;
  --indigo:     #6366f1;
  --green:      #10b981;
  --green-lt:   #34d399;
  --yellow:     #f59e0b;
  --orange:     #f97316;
  --red:        #ef4444;
  --red-lt:     #f87171;
}

/* ── DARK THEME ─────────────────────────────────────────── */
[data-theme="dark"] {
  --bg:          #09090b;
  --bg-surface:  #111117;
  --bg-card:     #18181b;
  --bg-card2:    #1c1c22;
  --bg-input:    rgba(255,255,255,0.05);
  --bg-input-focus: rgba(59,130,246,0.08);

  --border:      rgba(255,255,255,0.08);
  --border-md:   rgba(255,255,255,0.12);
  --border-lg:   rgba(255,255,255,0.18);

  --text:        #f4f4f5;
  --text-dim:    #a1a1aa;
  --text-muted:  #52525b;
  --text-faint:  #3f3f46;

  --shadow-sm:   0 2px 8px rgba(0,0,0,0.4);
  --shadow:      0 4px 20px rgba(0,0,0,0.5);
  --shadow-lg:   0 8px 40px rgba(0,0,0,0.6);

  --header-bg:   rgba(9,9,11,0.88);
  --panel-bg:    var(--bg-card);

  --decision-strip: rgba(255,255,255,0.03);

  /* Component-specific */
  --seg-bg:      rgba(0,0,0,0.4);
  --seg-active:  var(--blue);
  --quick-bg:    rgba(255,255,255,0.05);
  --quick-hover: rgba(255,255,255,0.1);

  --landing-gradient: linear-gradient(135deg, rgba(59,130,246,0.18), rgba(99,102,241,0.12));
  --landing-border:   rgba(59,130,246,0.3);

  --gauge-track:  rgba(255,255,255,0.08);
}

/* ── LIGHT THEME ─────────────────────────────────────────── */
[data-theme="light"] {
  --bg:          #f8fafc;
  --bg-surface:  #f1f5f9;
  --bg-card:     #ffffff;
  --bg-card2:    #f8fafc;
  --bg-input:    #f8fafc;
  --bg-input-focus: rgba(59,130,246,0.06);

  --border:      rgba(0,0,0,0.08);
  --border-md:   rgba(0,0,0,0.12);
  --border-lg:   rgba(0,0,0,0.18);

  --text:        #0f172a;
  --text-dim:    #475569;
  --text-muted:  #94a3b8;
  --text-faint:  #cbd5e1;

  --shadow-sm:   0 1px 4px rgba(0,0,0,0.08);
  --shadow:      0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.14);

  --header-bg:   rgba(248,250,252,0.92);
  --panel-bg:    var(--bg-card);

  --decision-strip: rgba(0,0,0,0.03);

  --seg-bg:      rgba(0,0,0,0.06);
  --seg-active:  var(--blue);
  --quick-bg:    rgba(0,0,0,0.04);
  --quick-hover: rgba(0,0,0,0.08);

  --landing-gradient: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(99,102,241,0.06));
  --landing-border:   rgba(59,130,246,0.25);

  --gauge-track:  rgba(0,0,0,0.08);
}

/* ── Base ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition-slow), color var(--transition-slow);
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-md); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-lg); }

/* Number input: no spinners */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
input[type="number"] { -moz-appearance: textfield; }

/* ── Header ─────────────────────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--header-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition-slow);
}

.header-inner {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 20px;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--blue), var(--indigo));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 2px 12px rgba(59,130,246,0.4);
  flex-shrink: 0;
}

.logo-wordmark { line-height: 1.15; }
.logo-name { font-size: 0.95rem; font-weight: 800; letter-spacing: -0.02em; display: block; }
.logo-accent { color: var(--blue); }
.logo-tagline { font-size: 0.65rem; color: var(--text-muted); font-weight: 500; display: block; }

/* Nav */
.nav {
  display: flex;
  gap: 2px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px;
  margin-left: 8px;
}

.nav-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  font-size: 0.82rem;
  font-weight: 500;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-dim);
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  white-space: nowrap;
}

.nav-btn:hover { color: var(--text); background: rgba(255,255,255,0.06); }
[data-theme="light"] .nav-btn:hover { background: rgba(0,0,0,0.05); }
.nav-btn.active {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 2px 10px rgba(59,130,246,0.4);
}

/* Header Actions */
.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Theme Toggle */
.theme-toggle {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid var(--border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  transition: all var(--transition);
  overflow: hidden;
}

.theme-toggle:hover { border-color: var(--border-lg); color: var(--text); }

.theme-icon {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] .light-icon { opacity: 0; transform: translateY(12px); }
[data-theme="dark"] .dark-icon  { opacity: 1; transform: translateY(0); }
[data-theme="light"] .dark-icon { opacity: 0; transform: translateY(-12px); }
[data-theme="light"] .light-icon { opacity: 1; transform: translateY(0); }

/* Icon button */
.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-dim);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  font-family: inherit;
}

.icon-btn:hover { border-color: var(--border-lg); color: var(--text); }

/* Mobile menu button — hidden on desktop */
#btn-menu { display: none; }

/* Mobile nav - hidden by default, shown on mobile when toggled */
.mobile-nav {
  display: none;
  padding: 8px 20px;
  gap: 4px;
  border-top: 1px solid var(--border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-nav.open { display: flex; }
.mobile-nav-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-size: 0.82rem;
  font-weight: 500;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
  font-family: inherit;
  flex-shrink: 0;
}

.mobile-nav-btn.active { background: var(--blue); color: #fff; border-color: var(--blue); }

/* ── Main ───────────────────────────────────────────────── */
.main {
  max-width: 1480px;
  margin: 0 auto;
  padding: 20px;
}

/* Tab Panels */
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 0.2s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Decision Strip ─────────────────────────────────────── */
.decision-strip {
  background: var(--decision-strip);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 16px;
  margin-bottom: 16px;
  transition: all 0.35s ease;
}

.ds-inner {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.ds-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
  flex-shrink: 0;
  transition: background 0.3s;
  box-shadow: 0 0 0 3px rgba(161,161,170,0.15);
}
.ds-dot.excellent { background: var(--green); box-shadow: 0 0 0 4px rgba(16,185,129,0.2); }
.ds-dot.good      { background: #6ee7b7;     box-shadow: 0 0 0 4px rgba(16,185,129,0.15); }
.ds-dot.review    { background: var(--yellow); box-shadow: 0 0 0 4px rgba(245,158,11,0.2); }
.ds-dot.low       { background: var(--orange); box-shadow: 0 0 0 4px rgba(249,115,22,0.2); }
.ds-dot.loss      { background: var(--red);   box-shadow: 0 0 0 4px rgba(239,68,68,0.2); }

.ds-label { font-size: 0.78rem; font-weight: 600; color: var(--text-muted); }
.ds-value { font-size: 0.82rem; font-weight: 700; color: var(--text); }
.ds-margin {
  margin-left: auto;
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--text-dim);
  letter-spacing: -0.02em;
}

/* ── Calculator Layout ──────────────────────────────────── */
.calc-layout {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 20px;
  align-items: start;
}

/* ── Panels (input cards) ───────────────────────────────── */
.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.panel:hover { border-color: var(--border-md); box-shadow: var(--shadow); }

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  cursor: pointer;
  user-select: none;
  transition: background var(--transition);
}

.panel-header:hover { background: var(--bg-input); }

.panel-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.panel-step {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--blue);
  background: rgba(59,130,246,0.12);
  border: 1px solid rgba(59,130,246,0.25);
  border-radius: var(--radius-xs);
  padding: 3px 8px;
  flex-shrink: 0;
}

.panel-title { font-size: 0.95rem; font-weight: 700; color: var(--text); }
.panel-desc  { font-size: 0.75rem; color: var(--text-muted); margin-top: 1px; }

.collapse-btn {
  width: 28px; height: 28px;
  border-radius: var(--radius-xs);
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}

.collapse-btn svg { transition: transform 0.28s ease; }
.collapse-btn:hover { background: var(--bg-input); color: var(--text); }
.panel.collapsed .collapse-btn svg { transform: rotate(180deg); }

.panel-body {
  padding: 0 20px 20px;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease, padding 0.3s ease;
}

.panel.collapsed .panel-body {
  max-height: 0 !important;
  opacity: 0;
  padding-bottom: 0;
  pointer-events: none;
}

/* ── Form Elements ──────────────────────────────────────── */
.field-grid { display: grid; gap: 14px; }
.cols-2     { grid-template-columns: 1fr 1fr; }
.col-span-2 { grid-column: 1 / -1; }

.field { display: flex; flex-direction: column; gap: 5px; }

.field-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
}

.field-badge {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 1px 6px;
  border-radius: 4px;
}
.field-badge.mrp { background: rgba(239,68,68,0.12); color: #f87171; border: 1px solid rgba(239,68,68,0.2); }
.field-badge.mop { background: rgba(99,102,241,0.12); color: #818cf8; border: 1px solid rgba(99,102,241,0.2); }

/* Hint / Tooltip trigger */
.field-hint {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: help;
  transition: all var(--transition);
}

.field-hint:hover { background: rgba(59,130,246,0.12); border-color: rgba(59,130,246,0.3); color: var(--blue); }

.field-input {
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
  font-family: inherit;
  transition: all var(--transition);
  width: 100%;
  outline: none;
}

.field-input::placeholder { color: var(--text-faint); font-weight: 400; }
.field-input:hover { border-color: var(--border-md); }
.field-input:focus {
  border-color: var(--blue);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.12);
}

/* Input with prefix/suffix */
.input-wrap { position: relative; display: flex; align-items: center; }
.input-pre, .input-suf {
  position: absolute;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  pointer-events: none;
  z-index: 1;
}
.input-pre { left: 11px; }
.input-suf { right: 11px; }
.has-pre   { padding-left: 26px; }
.has-suf   { padding-right: 30px; }

/* Quantity control */
.qty-control {
  display: flex;
  align-items: center;
  gap: 0;
}

.qty-btn {
  width: 36px; height: 36px;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  color: var(--text-dim);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
  font-family: inherit;
  line-height: 1;
}

#qty-minus { border-radius: var(--radius-sm) 0 0 var(--radius-sm); border-right: none; }
#qty-plus  { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; border-left: none; }

.qty-btn:hover { background: rgba(59,130,246,0.12); color: var(--blue); }

.qty-input {
  border-radius: 0 !important;
  text-align: center;
  width: 72px;
  flex-shrink: 0;
  font-weight: 700;
}

/* GST Toggle (segmented) */
.gst-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.gst-label { font-size: 0.78rem; color: var(--text-muted); font-weight: 500; }

.segmented {
  display: flex;
  gap: 3px;
  background: var(--seg-bg);
  border-radius: 8px;
  padding: 3px;
}

.seg-btn {
  padding: 5px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.seg-btn:hover { color: var(--text); }
.seg-btn.active {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 2px 8px rgba(59,130,246,0.35);
}

/* Quick-select buttons */
.quick-btns {
  display: flex;
  gap: 4px;
  margin-top: 6px;
}

.quick-btn {
  padding: 4px 10px;
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--quick-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  color: var(--text-dim);
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.quick-btn:hover { background: rgba(59,130,246,0.12); border-color: rgba(59,130,246,0.3); color: var(--blue); }

/* Price visualizer */
.price-viz {
  margin-top: 16px;
  padding: 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.pv-row {
  display: grid;
  grid-template-columns: 60px 1fr 80px;
  align-items: center;
  gap: 10px;
}

.pv-label { font-size: 0.72rem; font-weight: 600; color: var(--text-muted); }
.pv-bar-wrap { height: 6px; background: var(--border); border-radius: 99px; overflow: hidden; }
.pv-bar { height: 100%; border-radius: 99px; transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1); width: 0; }
.mrp-bar  { background: linear-gradient(90deg, #f87171, #ef4444); }
.mop-bar  { background: linear-gradient(90deg, #818cf8, #6366f1); }
.sup-bar  { background: linear-gradient(90deg, #60a5fa, #3b82f6); }
.land-bar { background: linear-gradient(90deg, #34d399, #10b981); }
.pv-val { font-size: 0.72rem; font-weight: 700; color: var(--text-dim); text-align: right; }

/* Section total bar */
.section-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 12px;
  padding: 8px 12px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-dim);
}

.total-val { font-weight: 800; font-size: 0.88rem; }
.total-val.green { color: var(--green-lt); }
.total-val.red   { color: var(--red-lt); }

/* ── Results Sidebar ────────────────────────────────────── */
.calc-results {
  position: sticky;
  top: 76px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Decision Card */
.decision-card {
  background: var(--bg-card);
  border: 1px solid var(--border-md);
  border-radius: var(--radius-lg);
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow);
  transition: all 0.35s ease;
}

.dc-icon { font-size: 2rem; line-height: 1; flex-shrink: 0; }
.dc-label { font-size: 0.65rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); }
.dc-title { font-size: 0.95rem; font-weight: 700; color: var(--text); margin-top: 2px; }

.dc-margin-badge {
  margin-left: auto;
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--text-muted);
  min-width: 64px;
  text-align: right;
}

/* Decision states */
.decision-card.state-excellent { background: rgba(16,185,129,0.08); border-color: rgba(16,185,129,0.25); box-shadow: 0 0 30px rgba(16,185,129,0.12); }
.decision-card.state-good      { background: rgba(16,185,129,0.05); border-color: rgba(16,185,129,0.18); }
.decision-card.state-review    { background: rgba(245,158,11,0.08); border-color: rgba(245,158,11,0.22); }
.decision-card.state-low       { background: rgba(249,115,22,0.08); border-color: rgba(249,115,22,0.22); }
.decision-card.state-loss      { background: rgba(239,68,68,0.1);  border-color: rgba(239,68,68,0.28); box-shadow: 0 0 30px rgba(239,68,68,0.1); }

/* Landing Card */
.landing-card {
  background: var(--landing-gradient);
  border: 1px solid var(--landing-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
}

.lc-label { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(147,197,253,0.8); margin-bottom: 4px; }
[data-theme="light"] .lc-label { color: rgba(30,64,175,0.7); }

.lc-value {
  font-size: 2.1rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: -0.04em;
  line-height: 1.1;
  transition: all 0.3s ease;
}
[data-theme="light"] .lc-value { color: var(--blue-dark); }

.lc-sub { font-size: 0.72rem; color: rgba(148,163,184,0.7); margin-top: 4px; }
[data-theme="light"] .lc-sub { color: rgba(71,85,105,0.7); }

/* Breakdown Card */
.breakdown-card,
.profit-card,
.totals-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-sm);
}

.bc-title {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.bc-rows { display: flex; flex-direction: column; gap: 0; }

.bc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
}
.bc-row:last-child { border-bottom: none; }

.bc-row.deduct { color: var(--text-dim); }
.bc-row.add    { color: var(--text-dim); }

.bc-label {
  font-size: 0.78rem;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 5px;
}

.bc-val { font-size: 0.83rem; font-weight: 700; color: var(--text); white-space: nowrap; }
.bc-val.red   { color: var(--red-lt); }
.bc-val.green { color: var(--green-lt); }

.bc-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
  padding-top: 10px;
  border-top: 2px solid var(--border-md);
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--text);
}

/* Profit Metrics Grid */
.profit-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}

.pm-item {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.pm-label { font-size: 0.68rem; font-weight: 600; color: var(--text-muted); }
.pm-val { font-size: 0.95rem; font-weight: 800; color: var(--text); }
.pm-val.accent { color: var(--blue); }

/* Margin Gauge */
.margin-gauge { margin-top: 4px; }

.mg-track {
  position: relative;
  height: 8px;
  background: linear-gradient(90deg, var(--red) 0%, var(--orange) 25%, var(--yellow) 50%, #84cc16 75%, var(--green) 100%);
  border-radius: 99px;
  overflow: visible;
}

.mg-fill {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  background: rgba(0,0,0,0.3);
  border-radius: 99px;
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.mg-needle {
  position: absolute;
  top: 50%;
  width: 14px; height: 14px;
  background: #fff;
  border: 2.5px solid #333;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
  transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  left: 0;
}
[data-theme="light"] .mg-needle { border-color: #1e293b; }

.mg-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 5px;
  font-size: 0.62rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Result Actions */
.result-actions {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
}

.action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 9px 10px;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.save-btn  { background: rgba(16,185,129,0.12); border: 1px solid rgba(16,185,129,0.3); color: var(--green-lt); }
.share-btn { background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.25); color: #93c5fd; }
.print-btn { background: var(--bg-input); border: 1px solid var(--border); color: var(--text-dim); }

.save-btn:hover  { background: rgba(16,185,129,0.2); box-shadow: 0 0 16px rgba(16,185,129,0.15); }
.share-btn:hover { background: rgba(59,130,246,0.18); }
.print-btn:hover { background: var(--quick-hover); color: var(--text); }

/* ── Page Header (Compare, History) ──────────────────────── */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.page-title { font-size: 1.5rem; font-weight: 800; letter-spacing: -0.03em; }
.page-sub   { font-size: 0.82rem; color: var(--text-muted); margin-top: 3px; }

.btn-primary {
  display: flex; align-items: center; gap: 6px;
  padding: 9px 18px;
  background: rgba(59,130,246,0.12);
  border: 1px solid rgba(59,130,246,0.3);
  border-radius: var(--radius-sm);
  color: #93c5fd;
  font-size: 0.83rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  white-space: nowrap;
}
.btn-primary:hover { background: rgba(59,130,246,0.2); }

.btn-danger {
  display: flex; align-items: center; gap: 6px;
  padding: 9px 18px;
  background: rgba(239,68,68,0.08);
  border: 1px solid rgba(239,68,68,0.2);
  border-radius: var(--radius-sm);
  color: #f87171;
  font-size: 0.83rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  white-space: nowrap;
}
.btn-danger:hover { background: rgba(239,68,68,0.15); }

/* ── Compare Tab ────────────────────────────────────────── */
.cmp-product-strip {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  margin-bottom: 16px;
}

.supplier-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px; }

.supplier-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: grid;
  grid-template-columns: 160px 1fr 1fr 1fr 1fr 1fr 36px;
  gap: 10px;
  align-items: end;
  transition: border-color var(--transition);
}
.supplier-card:hover { border-color: var(--border-md); }

.btn-remove {
  width: 32px; height: 32px;
  border-radius: var(--radius-xs);
  background: rgba(239,68,68,0.08);
  border: 1px solid rgba(239,68,68,0.2);
  color: #f87171;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}
.btn-remove:hover { background: rgba(239,68,68,0.18); }

/* Calculate / Compare Button */
.calc-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--blue), var(--indigo));
  border: none;
  border-radius: var(--radius);
  color: #fff;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s ease;
  font-family: inherit;
  box-shadow: 0 4px 18px rgba(59,130,246,0.3);
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

.calc-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 28px rgba(59,130,246,0.45); }
.calc-btn:active { transform: translateY(0); }

/* Compare Output */
.compare-output {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.compare-output table {
  width: 100%;
  border-collapse: collapse;
}

.compare-output thead {
  background: rgba(59,130,246,0.06);
  border-bottom: 1px solid var(--border);
}

.compare-output th {
  padding: 11px 14px;
  text-align: left;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.compare-output tbody tr {
  border-bottom: 1px solid rgba(255,255,255,0.03);
  transition: background var(--transition);
}
[data-theme="light"] .compare-output tbody tr { border-bottom-color: rgba(0,0,0,0.04); }
.compare-output tbody tr:last-child { border-bottom: none; }
.compare-output tbody tr:hover { background: var(--bg-input); }
.compare-output tbody tr.best { background: rgba(16,185,129,0.05); }

.compare-output td {
  padding: 12px 14px;
  font-size: 0.83rem;
  color: var(--text-dim);
}
.compare-output td:first-child { font-weight: 700; color: var(--text); }
.compare-output td.good { color: var(--green-lt); font-weight: 700; }
.compare-output td.bad  { color: var(--red-lt); }

.best-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.65rem;
  font-weight: 700;
  background: rgba(16,185,129,0.12);
  border: 1px solid rgba(16,185,129,0.25);
  color: var(--green-lt);
  border-radius: 4px;
  padding: 2px 7px;
  margin-left: 5px;
}

/* Margin pill in compare */
.margin-pill {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 700;
}
.margin-pill.excellent { background: rgba(16,185,129,0.12); color: var(--green-lt); }
.margin-pill.good      { background: rgba(16,185,129,0.08); color: #6ee7b7; }
.margin-pill.review    { background: rgba(245,158,11,0.1);  color: #fcd34d; }
.margin-pill.low       { background: rgba(249,115,22,0.1);  color: #fb923c; }
.margin-pill.loss      { background: rgba(239,68,68,0.1);   color: var(--red-lt); }

/* ── History Tab ────────────────────────────────────────── */
.history-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.history-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  align-items: center;
  gap: 16px;
  transition: all var(--transition);
  animation: slideIn 0.2s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-8px); }
  to   { opacity: 1; transform: translateX(0); }
}

.history-card:hover { border-color: var(--border-md); box-shadow: var(--shadow-sm); }

.hc-product { font-size: 0.92rem; font-weight: 700; color: var(--text); }
.hc-meta    { font-size: 0.72rem; color: var(--text-muted); margin-top: 3px; }
.hc-landing { font-size: 1.05rem; font-weight: 800; color: var(--blue); letter-spacing: -0.02em; }
.hc-landing-label { font-size: 0.65rem; color: var(--text-muted); margin-top: 2px; }

.hc-margin {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 700;
}
.hc-margin.excellent { background: rgba(16,185,129,0.12); color: var(--green-lt); }
.hc-margin.good      { background: rgba(16,185,129,0.08); color: #6ee7b7; }
.hc-margin.review    { background: rgba(245,158,11,0.1);  color: #fcd34d; }
.hc-margin.low       { background: rgba(249,115,22,0.1);  color: #fb923c; }
.hc-margin.loss      { background: rgba(239,68,68,0.1);   color: var(--red-lt); }

.hc-actions { display: flex; gap: 6px; }

.hc-btn {
  padding: 5px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 7px;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.hc-load { background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.25); color: #93c5fd; }
.hc-load:hover { background: rgba(59,130,246,0.2); }
.hc-del  { background: rgba(239,68,68,0.07); border: 1px solid rgba(239,68,68,0.2); color: #f87171; }
.hc-del:hover  { background: rgba(239,68,68,0.15); }

/* Empty State */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-card);
  border: 2px dashed var(--border-md);
  border-radius: var(--radius-xl);
}

.empty-emoji { font-size: 3rem; margin-bottom: 14px; }
.empty-state h3 { font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.empty-state p  { font-size: 0.85rem; color: var(--text-muted); line-height: 1.7; }

/* ── Tooltip ────────────────────────────────────────────── */
.tooltip-popup {
  position: fixed;
  z-index: 9000;
  max-width: 220px;
  background: var(--bg-card2);
  border: 1px solid var(--border-md);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 0.75rem;
  color: var(--text-dim);
  line-height: 1.5;
  box-shadow: var(--shadow-lg);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
  backdrop-filter: blur(8px);
}

.tooltip-popup.show { opacity: 1; }

/* ── Toast ──────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(60px);
  background: var(--bg-card2);
  border: 1px solid var(--border-md);
  color: var(--text);
  padding: 11px 20px;
  border-radius: 40px;
  font-size: 0.82rem;
  font-weight: 500;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  z-index: 9999;
  pointer-events: none;
  white-space: nowrap;
}

.toast.show { transform: translateX(-50%) translateY(0); }

/* ── Print ──────────────────────────────────────────────── */
@media print {
  .header, .decision-strip, .result-actions, .field-hint,
  .collapse-btn, .quick-btns, .price-viz, .calc-btn { display: none !important; }
  body { background: #fff; color: #000; }
  .calc-layout { grid-template-columns: 1fr 1fr; }
  .calc-results { position: static; }
  .panel, .breakdown-card, .profit-card, .totals-card, .landing-card, .decision-card {
    border-color: #e2e8f0; background: #fff; box-shadow: none;
  }
  .lc-value, .page-title, .panel-title { color: #000 !important; }
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 1200px) {
  .calc-layout { grid-template-columns: 1fr 360px; }
}

@media (max-width: 960px) {
  .calc-layout { grid-template-columns: 1fr; }
  .calc-results { position: static; }
  .nav { display: none; }
  #btn-menu { display: flex; }
  .mobile-nav.open { display: flex; }
  .cmp-product-strip { grid-template-columns: 1fr 1fr; }
  .supplier-card { grid-template-columns: 1fr 1fr 1fr; }
}

@media (max-width: 640px) {
  .header-inner { padding: 0 14px; }
  .main { padding: 12px; }
  .cols-2 { grid-template-columns: 1fr; }
  .profit-metrics { grid-template-columns: 1fr 1fr; }
  .result-actions { grid-template-columns: 1fr 1fr 1fr; }
  .history-card { grid-template-columns: 1fr; gap: 10px; }
  .cmp-product-strip { grid-template-columns: 1fr; }
  .supplier-card { grid-template-columns: 1fr 1fr; }
  .page-header { flex-direction: column; }
  .lc-value { font-size: 1.7rem; }
  .decision-strip { display: none; }
}

@media (max-width: 400px) {
  .logo-wordmark { display: none; }
  .result-actions { grid-template-columns: 1fr; }
}