/* ─── DESIGN TOKENS ─── */
:root {
  --ink:   #0F2318;
  --ink-2: #163324;
  --ink-3: #1C3E2B;
  --parchment:     #F0E6C8;
  --parchment-dim: #C5B68A;
  --amber:  #C9A84C;
  --copper: #A07828;
  --sage:   #4A7B5A;
  --blue:   #3b82f6;
  --green:  #10b981;
  --purple: #a855f7;
  --red:    #ef4444;
  --line:   rgba(243,234,215,0.12);
  --ff: 'Cairo', sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--ink);
  color: var(--parchment);
  font-family: var(--ff);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    radial-gradient(circle at 15% 10%, rgba(232,166,60,0.07) 0%, transparent 45%),
    radial-gradient(circle at 85% 85%, rgba(201,123,60,0.05) 0%, transparent 45%);
  pointer-events: none; z-index: 0;
}

/* ─── NAV ─── */
nav {
  position: sticky; top: 0; z-index: 100;
  background: rgba(12,14,16,0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
}
.nav-inner {
  max-width: 1300px; margin: 0 auto; padding: 0 32px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 14px; text-decoration: none; color: var(--parchment); }
.logo-mark { width: 62px; height: 62px; }
.logo-mark svg { width: 100%; height: 100%; }
.logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.logo-text .ar { font-size: 19px; font-weight: 700; }
.logo-text .en { font-size: 10px; color: var(--parchment-dim); letter-spacing: 3px; font-weight: 500; }
.back-link {
  color: var(--parchment-dim); text-decoration: none; font-size: 14px; font-weight: 500;
  display: flex; align-items: center; gap: 8px; transition: color 0.2s;
}
.back-link:hover { color: var(--amber); }

/* ─── WRAPPER ─── */
.wrap { max-width: 1300px; margin: 0 auto; padding: 0 32px; position: relative; z-index: 1; }

/* ─── HERO ─── */
.hero {
  padding: 56px 0 40px;
  text-align: center;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 16px;
  background: rgba(232,166,60,0.1);
  border: 1px solid rgba(232,166,60,0.3);
  border-radius: 100px;
  font-size: 13px; color: var(--amber); font-weight: 600; letter-spacing: 1px;
  margin-bottom: 22px;
}
.hero-eyebrow .dot { width:7px; height:7px; border-radius:50%; background:var(--amber); box-shadow:0 0 10px var(--amber); animation: pulse 1.5s ease-in-out infinite; }
.hero h1 { font-size: clamp(32px,5vw,56px); font-weight: 800; letter-spacing: -1px; margin-bottom: 16px; }
.hero h1 span { color: var(--amber); }
.hero p { font-size: clamp(15px,1.8vw,18px); color: var(--parchment-dim); max-width: 640px; margin: 0 auto; }

/* ─── STEP PROGRESS ─── */
.steps-bar {
  display: flex; align-items: center; justify-content: center;
  gap: 0; margin-bottom: 40px; padding: 0 20px;
}
.step {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 20px; border-radius: 100px;
  font-size: 13px; font-weight: 700; color: var(--parchment-dim);
  transition: all 0.3s; position: relative;
}
.step.active { color: var(--amber); }
.step.done { color: var(--parchment-dim); }
.step-num {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--ink-3); border: 2px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 900; flex-shrink: 0;
  transition: all 0.3s;
}
.step.active .step-num { background: var(--amber); border-color: var(--amber); color: var(--ink); box-shadow: 0 0 16px rgba(232,166,60,0.4); }
.step.done .step-num { background: var(--sage); border-color: var(--sage); color: #fff; }
.step-connector { width: 40px; height: 2px; background: var(--line); flex-shrink: 0; }
.step-connector.done { background: var(--sage); }

/* ─── SYSTEM TYPE CARDS ─── */
.type-tabs {
  display: grid; grid-template-columns: repeat(4,1fr); gap: 14px;
  padding: 0 0 36px;
}
.type-tab {
  background: var(--ink-2); border: 2px solid var(--line);
  border-radius: 18px; padding: 24px 18px 20px; cursor: pointer;
  text-align: right; transition: all 0.3s; font-family: var(--ff);
  display: flex; flex-direction: column; gap: 0;
  position: relative; overflow: hidden;
}
.type-tab::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(232,166,60,0.12), transparent);
  opacity: 0; transition: opacity 0.3s;
}
.type-tab:hover { border-color: rgba(232,166,60,0.5); transform: translateY(-3px); box-shadow: 0 12px 32px -10px rgba(0,0,0,0.4); }
.type-tab:hover::before { opacity: 1; }
.type-tab.active { border-color: var(--amber); box-shadow: 0 0 0 1px rgba(232,166,60,0.3), 0 16px 40px -12px rgba(232,166,60,0.25); }
.type-tab.active::before { opacity: 1; }
.tab-icon-wrap {
  width: 52px; height: 52px; border-radius: 14px;
  background: var(--ink-3); border: 1px solid var(--line);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; margin-bottom: 14px;
  transition: all 0.3s;
}
.type-tab.active .tab-icon-wrap { background: rgba(232,166,60,0.15); border-color: rgba(232,166,60,0.4); }
.tab-label { font-size: 16px; font-weight: 900; color: var(--parchment); margin-bottom: 6px; transition: color 0.3s; }
.tab-sub { font-size: 12px; color: var(--parchment-dim); line-height: 1.5; margin-bottom: 14px; }
.type-tab.active .tab-label { color: var(--amber); }
.tab-tags { display: flex; flex-direction: column; gap: 4px; }
.tab-tag { font-size: 11px; color: var(--parchment-dim); display: flex; align-items: center; gap: 5px; opacity: 0.75; }
.tab-tag::before { content: '◆'; font-size: 6px; color: var(--amber); opacity: 0.6; }
.type-tab.active .tab-tag { opacity: 1; }

/* ─── CALC LAYOUT ─── */
.calc-layout {
  display: grid; grid-template-columns: 1fr; gap: 20px;
  padding-bottom: 24px; align-items: start;
}

/* ─── INPUT CARD ─── */
.input-card {
  background: var(--ink-2); border: 1px solid var(--line);
  border-radius: 16px; overflow: hidden;
}
.card-head {
  padding: 20px 24px 18px; border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: 12px;
}
.card-head-icon { font-size: 22px; }
.card-head-title { font-size: 17px; font-weight: 800; }
.card-head-sub { font-size: 13px; color: var(--parchment-dim); margin-top: 2px; }
.card-body { padding: 24px; }

.sys-panel { display: none; }
.sys-panel.active { display: block; }

/* ─── FORM ELEMENTS ─── */
.field { margin-bottom: 20px; }
.field label { display: block; font-size: 13px; font-weight: 700; color: var(--parchment-dim); margin-bottom: 8px; }
.field input, .field select {
  width: 100%; background: var(--ink-3); border: 1px solid var(--line);
  border-radius: 10px; padding: 13px 16px; color: var(--parchment);
  font-family: var(--ff); font-size: 15px; transition: border-color 0.2s;
  appearance: none;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--amber); }
.field select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23c9bfa9' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: left 14px center; padding-left: 40px; }
.field .hint { font-size: 12px; color: var(--parchment-dim); margin-top: 6px; opacity: 0.7; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

/* ─── HP SELECTOR ─── */
.hp-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: 7px; margin-bottom: 10px; }
.hp-btn {
  padding: 10px 4px; border-radius: 10px;
  border: 1.5px solid var(--line); background: var(--ink-3);
  color: var(--parchment); font-family: var(--ff); font-size: 13px; font-weight: 700;
  cursor: pointer; transition: all 0.2s; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
}
.hp-btn .hp-num { font-size: 15px; font-weight: 900; }
.hp-btn .hp-tag { font-size: 9px; color: var(--parchment-dim); font-weight: 600; }
.hp-btn:hover { border-color: rgba(232,166,60,0.5); background: rgba(232,166,60,0.06); }
.hp-btn.sel { border-color: var(--amber); background: rgba(232,166,60,0.15); color: var(--amber); box-shadow: 0 0 12px rgba(232,166,60,0.15); }
.hp-btn.sel .hp-tag { color: rgba(232,166,60,0.7); }
.hp-btn.hp-large { border-color: rgba(167,139,250,0.2); background: rgba(167,139,250,0.05); }
.hp-btn.hp-large .hp-num { color: #c4b5fd; }
.hp-btn.hp-large.sel { border-color: #a855f7; background: rgba(167,139,250,0.15); color: #c4b5fd; }
.hp-custom-row { display: flex; gap: 10px; align-items: center; margin-top: 4px; }
.hp-custom-row label { font-size: 12px; color: var(--parchment-dim); white-space: nowrap; font-weight: 600; }
.hp-custom-inp {
  flex: 1; background: var(--ink-3); border: 1.5px solid var(--line);
  border-radius: 10px; padding: 10px 14px; color: var(--parchment);
  font-family: var(--ff); font-size: 14px; font-weight: 700; text-align: center;
  transition: border-color 0.2s;
}
.hp-custom-inp:focus { outline: none; border-color: var(--amber); }
.hp-custom-inp::placeholder { color: var(--parchment-dim); opacity: 0.5; font-weight: 400; }
.hp-display {
  display: flex; align-items: center; gap: 12px;
  background: rgba(232,166,60,0.08); border: 1px solid rgba(232,166,60,0.2);
  border-radius: 12px; padding: 12px 16px; margin-bottom: 14px;
}
.hp-display-num { font-size: 32px; font-weight: 900; color: var(--amber); line-height: 1; }
.hp-display-unit { font-size: 14px; color: var(--parchment-dim); font-weight: 700; }
.hp-display-kw { font-size: 13px; color: var(--parchment-dim); margin-top: 2px; }

/* ─── APPLIANCE LIST ─── */
.appliance-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.appliance-header span { font-size: 14px; font-weight: 700; color: var(--parchment-dim); }
.appliance-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; max-height: 360px; overflow-y: auto; padding-left: 4px; }
.appliance-list::-webkit-scrollbar { width: 4px; }
.appliance-list::-webkit-scrollbar-track { background: transparent; }
.appliance-list::-webkit-scrollbar-thumb { background: var(--line); border-radius: 4px; }
.app-row {
  display: grid; grid-template-columns: 1fr auto auto auto;
  gap: 8px; align-items: center;
  background: var(--ink-3); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px;
  transition: border-color 0.2s;
}
.app-row:hover { border-color: rgba(232,166,60,0.25); }
.app-name { font-size: 13px; font-weight: 700; }
.app-watt { font-size: 12px; color: var(--parchment-dim); }
.app-qty-inp, .app-hrs-inp {
  width: 58px; background: var(--ink); border: 1px solid var(--line);
  border-radius: 7px; padding: 6px 8px; color: var(--parchment);
  font-family: var(--ff); font-size: 13px; text-align: center;
}
.app-qty-inp:focus, .app-hrs-inp:focus { outline: none; border-color: var(--amber); }
.app-del { background: none; border: none; color: rgba(239,68,68,0.6); cursor: pointer; font-size: 16px; padding: 4px; transition: color 0.2s; }
.app-del:hover { color: var(--red); }
.app-add-section { display: grid; grid-template-columns: 1fr auto; gap: 10px; margin-bottom: 14px; }
.app-add-section select { width: 100%; background: var(--ink-3); border: 1px solid var(--line); border-radius: 10px; padding: 11px 14px; color: var(--parchment); font-family: var(--ff); font-size: 14px; }
.app-add-section button { background: rgba(232,166,60,0.15); border: 1px solid rgba(232,166,60,0.35); border-radius: 10px; padding: 0 18px; color: var(--amber); font-family: var(--ff); font-size: 14px; font-weight: 700; cursor: pointer; white-space: nowrap; transition: all 0.2s; }
.app-add-section button:hover { background: rgba(232,166,60,0.25); }
.custom-app-row { display: grid; grid-template-columns: 1fr 80px 80px auto; gap: 8px; margin-bottom: 8px; }
.custom-app-row input { background: var(--ink-3); border: 1px solid var(--line); border-radius: 8px; padding: 9px 12px; color: var(--parchment); font-family: var(--ff); font-size: 13px; }
.custom-app-row input:focus { outline: none; border-color: var(--amber); }
.custom-app-row button { background: rgba(16,185,129,0.12); border: 1px solid rgba(16,185,129,0.3); border-radius: 8px; color: #6ee7b7; font-family: var(--ff); font-size: 13px; font-weight: 700; cursor: pointer; transition: all 0.2s; padding: 0 10px; }
.custom-app-row button:hover { background: rgba(16,185,129,0.22); }
.daily-total-bar {
  display: flex; justify-content: space-between; align-items: center;
  background: rgba(232,166,60,0.08); border: 1px solid rgba(232,166,60,0.2);
  border-radius: 10px; padding: 12px 16px; margin-top: 12px;
}
.daily-total-bar .label { font-size: 13px; font-weight: 700; color: var(--parchment-dim); }
.daily-total-bar .value { font-size: 18px; font-weight: 900; color: var(--amber); }

/* ─── BATTERY TOGGLE ─── */
.toggle-row { display: flex; align-items: center; gap: 14px; padding: 14px 0; }
.toggle-label { flex: 1; font-size: 14px; font-weight: 700; }
.toggle-label small { display: block; font-size: 12px; color: var(--parchment-dim); font-weight: 400; margin-top: 2px; }
.toggle {
  position: relative; width: 52px; height: 28px;
  background: var(--ink-3); border: 1.5px solid var(--line);
  border-radius: 100px; cursor: pointer; transition: all 0.3s; flex-shrink: 0;
}
.toggle.on { background: rgba(232,166,60,0.3); border-color: var(--amber); }
.toggle::after {
  content: ''; position: absolute; top: 3px; right: 3px;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--parchment-dim); transition: all 0.3s;
}
.toggle.on::after { right: auto; left: 3px; background: var(--amber); }

/* ─── RESULTS CARD ─── */
.results-card {
  background: var(--ink-2); border: 1px solid var(--line);
  border-radius: 18px; overflow: hidden;
}
.results-card .card-head {
  background: linear-gradient(135deg, rgba(232,166,60,0.12), rgba(201,123,60,0.06));
  border-bottom: 1px solid var(--line);
}

/* key metrics strip */
.metrics-strip {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1px; background: var(--line);
  border-bottom: 1px solid var(--line);
}
.metric-box {
  background: var(--ink-2); padding: 16px 18px;
  display: flex; flex-direction: column; gap: 4px;
}
.metric-box:last-child:nth-child(odd) { grid-column: 1/-1; }
.metric-label { font-size: 10px; font-weight: 700; color: var(--parchment-dim); text-transform: uppercase; letter-spacing: 0.6px; }
.metric-val { font-size: 26px; font-weight: 900; color: var(--amber); line-height: 1; }
.metric-val.green { color: #10b981; }
.metric-sub { font-size: 11px; color: var(--parchment-dim); margin-top: 2px; }

.result-row { padding: 14px 18px; border-bottom: 1px solid var(--line); }
.result-row:last-child { border-bottom: none; }
.result-label { font-size: 11px; font-weight: 700; color: var(--parchment-dim); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 8px; }
.result-val { font-size: 20px; font-weight: 900; color: var(--amber); }
.result-val small { font-size: 12px; font-weight: 600; color: var(--parchment-dim); margin-right: 4px; }
.result-detail { font-size: 12px; color: var(--parchment-dim); margin-top: 3px; }
.result-item-list { display: flex; flex-direction: column; gap: 6px; }
.result-item {
  background: var(--ink-3); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 12px;
  display: flex; align-items: center; gap: 9px;
  transition: border-color 0.2s;
}
.result-item:hover { border-color: rgba(232,166,60,0.2); }
.result-item-icon { font-size: 16px; flex-shrink: 0; }
.result-item-name { font-size: 12px; font-weight: 700; flex: 1; }
.result-item-price { font-size: 12px; color: var(--amber); font-weight: 800; white-space: nowrap; }

.cost-row { padding: 18px; background: linear-gradient(135deg, rgba(232,166,60,0.12), rgba(201,123,60,0.06)); border-top: 1px solid rgba(232,166,60,0.15); }
.cost-label { font-size: 11px; font-weight: 700; color: var(--parchment-dim); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 6px; }
.cost-range { font-size: 22px; font-weight: 900; color: var(--amber); }
.cost-note { font-size: 11px; color: var(--parchment-dim); margin-top: 4px; line-height: 1.6; }

.empty-result {
  padding: 40px 24px; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 14px;
}
.empty-result-icon { font-size: 48px; opacity: 0.4; }
.empty-result p { color: var(--parchment-dim); font-size: 14px; }

/* ─── SAVINGS BADGE ─── */
.savings-badge {
  display: flex; align-items: center; gap: 10px;
  background: rgba(16,185,129,0.1); border: 1px solid rgba(16,185,129,0.25);
  border-radius: 10px; padding: 12px 14px; margin: 12px 24px 0;
}
.savings-badge .icon { font-size: 20px; }
.savings-badge .text { font-size: 13px; color: #6ee7b7; font-weight: 700; }

/* ─── QUOTE SECTION ─── */
.quote-section { padding: 0 0 80px; }
.quote-card {
  background: var(--ink-2); border: 1px solid var(--line);
  border-radius: 16px; overflow: hidden;
}
.quote-card-head {
  padding: 28px 32px 24px;
  background: linear-gradient(135deg, rgba(232,166,60,0.1), transparent);
  border-bottom: 1px solid var(--line);
}
.quote-card-head h2 { font-size: 22px; font-weight: 800; margin-bottom: 8px; }
.quote-card-head p { font-size: 14px; color: var(--parchment-dim); }
.quote-body { padding: 28px 32px; }
.quote-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.quote-field label { display: block; font-size: 13px; font-weight: 700; color: var(--parchment-dim); margin-bottom: 8px; }
.quote-field input, .quote-field textarea, .quote-field select {
  width: 100%; background: var(--ink-3); border: 1px solid var(--line);
  border-radius: 10px; padding: 13px 16px; color: var(--parchment);
  font-family: var(--ff); font-size: 15px; transition: border-color 0.2s;
}
.quote-field input:focus, .quote-field textarea:focus, .quote-field select:focus { outline: none; border-color: var(--amber); }
.quote-field textarea { resize: vertical; min-height: 80px; }
.submit-btn {
  width: 100%; padding: 16px; border: none; border-radius: 12px;
  background: linear-gradient(135deg, var(--amber), var(--copper));
  color: var(--ink); font-family: var(--ff); font-size: 16px; font-weight: 800;
  cursor: pointer; transition: all 0.2s; margin-top: 8px;
  display: flex; align-items: center; justify-content: center; gap: 10px;
}
.submit-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 30px -10px rgba(232,166,60,0.5); }
.submit-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; box-shadow: none; }
.submit-success {
  display: none; background: rgba(16,185,129,0.12); border: 1px solid rgba(16,185,129,0.3);
  border-radius: 12px; padding: 20px 24px; text-align: center;
}
.submit-success.show { display: block; }
.submit-success h3 { color: #6ee7b7; font-size: 18px; margin-bottom: 8px; }
.submit-success p { color: var(--parchment-dim); font-size: 14px; }

/* ─── PRINT / QUOTE DOWNLOAD ─── */
.dl-btn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 14px; border-radius: 12px;
  background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.3);
  color: #93c5fd; font-family: var(--ff); font-size: 14px; font-weight: 700;
  cursor: pointer; transition: all 0.2s; margin: 0 24px 20px; width: calc(100% - 48px);
}
.dl-btn:hover { background: rgba(59,130,246,0.18); }

/* ─── SAFETY FACTOR BUTTONS ─── */
.sf-btns { display:grid; grid-template-columns:repeat(6,1fr); gap:6px; margin-bottom:10px; }
.sf-btn { background:var(--ink-3); border:1.5px solid var(--line); border-radius:10px; padding:10px 4px; cursor:pointer; font-family:var(--ff); display:flex; flex-direction:column; align-items:center; gap:3px; transition:all 0.2s; }
.sf-btn:hover { border-color:rgba(232,166,60,0.4); }
.sf-btn.sel { border-color:var(--amber); background:rgba(232,166,60,0.12); }
.sf-pct { font-size:16px; font-weight:900; color:var(--parchment); }
.sf-btn.sel .sf-pct { color:var(--amber); }
.sf-desc { font-size:10px; color:var(--parchment-dim); text-align:center; line-height:1.3; }
.sf-info { font-size:12px; color:var(--parchment-dim); line-height:1.7; background:rgba(232,166,60,0.06); border:1px solid rgba(232,166,60,0.15); border-radius:8px; padding:10px 12px; margin-top:8px; }

/* ─── STRING CARD ─── */
.string-card { border:1px solid rgba(59,130,246,0.2); border-radius:14px; overflow:hidden; margin-top:4px; }
.string-card-head { background:rgba(59,130,246,0.06); border-bottom:1px solid rgba(59,130,246,0.12); padding:11px 16px; display:flex; align-items:center; gap:10px; }
.string-card-title { font-size:12px; font-weight:800; color:#93c5fd; flex:1; }
.string-badge { font-size:10px; font-weight:700; padding:3px 10px; border-radius:100px; flex-shrink:0; }
.string-badge-ok  { background:rgba(16,185,129,0.15); color:#6ee7b7; }
.string-badge-warn{ background:rgba(251,191,36,0.15); color:#fbbf24; }
.string-diagram { padding:16px 20px; background:var(--ink-3); display:flex; align-items:center; justify-content:center; border-bottom:1px solid rgba(59,130,246,0.1); }
.string-d-item { display:flex; flex-direction:column; align-items:center; gap:4px; padding:0 12px; }
.string-d-num { font-size:30px; font-weight:900; color:#93c5fd; line-height:1; }
.string-d-label { font-size:9px; color:var(--parchment-dim); font-weight:600; text-transform:uppercase; letter-spacing:0.5px; text-align:center; }
.string-d-sep { font-size:22px; color:rgba(59,130,246,0.3); padding:0 4px; margin-bottom:14px; }
.string-voltages { padding:12px 16px; display:flex; flex-direction:column; gap:10px; }
.string-volt-row { display:flex; align-items:center; gap:12px; }
.string-volt-lbl { font-size:11px; font-weight:700; color:var(--parchment-dim); width:88px; flex-shrink:0; }
.string-volt-track { flex:1; height:6px; background:rgba(255,255,255,0.06); border-radius:100px; position:relative; }
.string-volt-zone { position:absolute; top:0; height:100%; background:rgba(16,185,129,0.3); border-radius:100px; }
.string-volt-pin { position:absolute; top:-5px; width:3px; height:16px; border-radius:2px; transform:translateX(-50%); z-index:2; }
.string-volt-v { font-size:11px; font-weight:800; width:90px; text-align:left; flex-shrink:0; }
.string-volt-v.ok   { color:#6ee7b7; }
.string-volt-v.warn { color:#fbbf24; }

/* ─── STRUCT CARD ─── */
.struct-card { border:1px solid rgba(167,139,250,0.2); border-radius:14px; overflow:hidden; margin-top:4px; }
.struct-card-head { background:rgba(167,139,250,0.06); border-bottom:1px solid rgba(167,139,250,0.12); padding:11px 16px; display:flex; align-items:center; gap:10px; }
.struct-card-title { font-size:12px; font-weight:800; color:#c4b5fd; flex:1; }
.struct-badge { font-size:10px; font-weight:700; padding:3px 10px; border-radius:100px; background:rgba(167,139,250,0.15); color:#c4b5fd; flex-shrink:0; }
.struct-stat-grid { display:grid; grid-template-columns:1fr 1fr 1fr; gap:1px; background:rgba(167,139,250,0.08); }
.struct-stat { padding:12px 14px; background:var(--ink-2); }
.struct-stat-val { font-size:20px; font-weight:900; color:#c4b5fd; line-height:1; }
.struct-stat-label { font-size:10px; color:var(--parchment-dim); margin-top:3px; }
.struct-stat-note { font-size:9px; color:var(--parchment-dim); opacity:0.6; margin-top:1px; }

/* ─── COST BREAKDOWN ─── */
.cost-breakdown { padding:18px; background:linear-gradient(135deg,rgba(201,168,76,0.09),rgba(160,120,40,0.03)); border-top:1px solid rgba(201,168,76,0.15); }
.cost-bk-title { font-size:11px; font-weight:700; color:var(--parchment-dim); text-transform:uppercase; letter-spacing:0.5px; margin-bottom:14px; }
.cost-bk-item { display:flex; align-items:center; gap:10px; margin-bottom:9px; }
.cost-bk-label { font-size:11px; color:var(--parchment-dim); flex:1; min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.cost-bk-bar { width:70px; height:5px; background:rgba(255,255,255,0.07); border-radius:100px; flex-shrink:0; overflow:hidden; }
.cost-bk-fill { height:100%; border-radius:100px; background:linear-gradient(90deg,var(--copper),var(--amber)); }
.cost-bk-pct { font-size:10px; color:var(--parchment-dim); width:28px; text-align:center; flex-shrink:0; }
.cost-bk-price { font-size:11px; font-weight:800; color:var(--amber); width:68px; text-align:left; flex-shrink:0; }
.cost-bk-total { border-top:1px solid rgba(201,168,76,0.2); padding-top:12px; margin-top:10px; }
.cost-bk-range { font-size:22px; font-weight:900; color:var(--amber); }
.cost-bk-note { font-size:11px; color:var(--parchment-dim); margin-top:4px; line-height:1.6; }

/* ─── TARIFF INPUTS in ROI ─── */
.tariff-inp-wrap { display:flex; align-items:center; gap:6px; }
.tariff-inp { width:54px; background:rgba(255,255,255,0.06); border:1.5px solid rgba(201,168,76,0.4); border-radius:8px; padding:5px 8px; color:var(--amber); font-family:var(--ff); font-size:16px; font-weight:900; text-align:center; -moz-appearance:textfield; }
.tariff-inp::-webkit-inner-spin-button,.tariff-inp::-webkit-outer-spin-button{-webkit-appearance:none}
.tariff-inp:focus { outline:none; border-color:var(--amber); background:rgba(201,168,76,0.1); }
.tariff-inp-unit { font-size:12px; color:var(--parchment-dim); font-weight:600; }
.tariff-inp-2 { color:#6ee7b7; border-color:rgba(16,185,129,0.4); }
.tariff-inp-2:focus { border-color:#6ee7b7; background:rgba(16,185,129,0.08); }

/* ─── ANIMATIONS ─── */
@keyframes pulse { 0%,100%{opacity:0.7;transform:scale(1)} 50%{opacity:1;transform:scale(1.15)} }
@keyframes fadeUp { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} }
.sys-panel.active { animation: fadeUp 0.3s ease; }

/* ─── ROI SECTION ─── */
.roi-section {
  background: var(--ink-2); border: 1px solid var(--line);
  border-radius: 18px; overflow: hidden; margin-bottom: 28px;
}
.roi-header {
  background: linear-gradient(135deg, rgba(201,168,76,0.13), rgba(160,120,40,0.06));
  border-bottom: 1px solid var(--line);
  padding: 24px 28px; display: flex; align-items: center; gap: 16px;
}
.roi-header-icon { font-size: 32px; }
.roi-header h2 { font-size: 20px; font-weight: 900; margin-bottom: 4px; }
.roi-header p { font-size: 13px; color: var(--parchment-dim); }
.roi-kpis {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 1px; background: var(--line); border-bottom: 1px solid var(--line);
}
.roi-kpi { background: var(--ink-2); padding: 20px 16px; text-align: center; }
.roi-kpi-val { font-size: 22px; font-weight: 900; color: var(--amber); line-height: 1.1; }
.roi-kpi-label { font-size: 11px; color: var(--parchment-dim); margin-top: 5px; font-weight: 600; letter-spacing: 0.3px; }
.roi-kpi-sub { font-size: 10px; color: var(--parchment-dim); opacity: 0.7; margin-top: 2px; }
.roi-body { padding: 24px 28px; }
.roi-scenarios { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 28px; }
.roi-scenario {
  border-radius: 14px; padding: 20px; border: 1px solid;
  position: relative; overflow: hidden;
}
.roi-scenario::before {
  content: ''; position: absolute; inset: 0; opacity: 0.04;
  border-radius: 14px;
}
.roi-sc-low { border-color: rgba(201,168,76,0.35); background: rgba(201,168,76,0.04); }
.roi-sc-low::before { background: var(--amber); }
.roi-sc-high { border-color: rgba(16,185,129,0.35); background: rgba(16,185,129,0.04); }
.roi-sc-high::before { background: #10b981; }
.roi-sc-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.roi-sc-tariff { font-size: 15px; font-weight: 900; }
.roi-sc-low .roi-sc-tariff { color: var(--amber); }
.roi-sc-high .roi-sc-tariff { color: #6ee7b7; }
.roi-sc-badge { font-size: 10px; font-weight: 700; padding: 3px 9px; border-radius: 100px; }
.roi-sc-low .roi-sc-badge { background: rgba(201,168,76,0.15); color: var(--amber); }
.roi-sc-high .roi-sc-badge { background: rgba(16,185,129,0.15); color: #6ee7b7; }
.roi-sc-payback-row { text-align: center; margin-bottom: 12px; }
.roi-sc-payback { font-size: 44px; font-weight: 900; line-height: 1; }
.roi-sc-low .roi-sc-payback { color: var(--amber); }
.roi-sc-high .roi-sc-payback { color: #6ee7b7; }
.roi-sc-payback-label { font-size: 12px; color: var(--parchment-dim); font-weight: 600; margin-top: 4px; }
.payback-timeline { margin: 12px 0 14px; }
.payback-track {
  height: 8px; background: rgba(255,255,255,0.08); border-radius: 100px;
  position: relative; overflow: hidden;
}
.payback-fill {
  height: 100%; border-radius: 100px; transition: width 0.8s ease;
}
.roi-sc-low .payback-fill { background: linear-gradient(90deg, var(--copper), var(--amber)); }
.roi-sc-high .payback-fill { background: linear-gradient(90deg, #059669, #10b981); }
.payback-milestones {
  display: flex; justify-content: space-between;
  margin-top: 5px; font-size: 10px; color: var(--parchment-dim);
}
.roi-sc-stats { display: grid; grid-template-columns: 1fr; gap: 8px; margin-top: 14px; }
.roi-sc-stat {
  display: flex; justify-content: space-between; align-items: center;
  background: rgba(255,255,255,0.04); border-radius: 8px; padding: 8px 12px;
}
.roi-sc-stat-label { font-size: 12px; color: var(--parchment-dim); }
.roi-sc-stat-val { font-size: 13px; font-weight: 800; }
.roi-sc-low .roi-sc-stat-val { color: var(--amber); }
.roi-sc-high .roi-sc-stat-val { color: #6ee7b7; }
.roi-chart-section { margin-bottom: 24px; }
.roi-chart-title {
  font-size: 13px; font-weight: 800; color: var(--parchment-dim);
  letter-spacing: 0.5px; margin-bottom: 14px; display: flex; align-items: center; gap: 8px;
}
.roi-chart-legend { display: flex; gap: 18px; margin-bottom: 12px; }
.roi-legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--parchment-dim); }
.roi-legend-dot { width: 10px; height: 10px; border-radius: 3px; }
.roi-chart-svg { width: 100%; }
.roi-extra-note {
  background: rgba(16,185,129,0.07); border: 1px solid rgba(16,185,129,0.25);
  border-radius: 12px; padding: 16px 18px;
}
.roi-extra-note-title { font-size: 13px; font-weight: 800; color: #6ee7b7; margin-bottom: 8px; display: flex; align-items: center; gap: 7px; }
.roi-extra-note-body { font-size: 12.5px; color: var(--parchment-dim); line-height: 1.85; }
.roi-extra-note-body li { margin-bottom: 3px; }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .calc-layout { grid-template-columns: 1fr; }
  .results-card { position: static; }
  .type-tabs { grid-template-columns: 1fr 1fr; }
  .steps-bar { overflow-x: auto; justify-content: flex-start; padding: 0 10px; }
  .step-connector { width: 20px; flex-shrink: 0; }
}
@media (max-width: 700px) {
  .roi-kpis { grid-template-columns: 1fr 1fr; }
  .roi-scenarios { grid-template-columns: 1fr; }
  .roi-body { padding: 16px; }
  .roi-header { padding: 18px; }
}
@media (max-width: 600px) {
  .wrap { padding: 0 14px; }
  .type-tabs { grid-template-columns: 1fr 1fr; gap: 8px; }
  .type-tab { padding: 14px 10px; }
  .tab-icon { font-size: 22px; }
  .tab-label { font-size: 13px; }
  .tab-sub { font-size: 11px; }
  .tab-tags { display: none; }
  .hero { padding: 28px 0 20px; }
  .hero h1 { font-size: 26px; }
  .step span { display: none; }
  .step { padding: 8px 10px; }
  .quote-form-row { grid-template-columns: 1fr; }
  .quote-body { padding: 16px; }
  .quote-card-head { padding: 20px 16px; }
  .custom-app-row { grid-template-columns: 1fr 70px auto; }
  .custom-app-row .hrs-inp { display: none; }
  .hp-grid { gap: 5px; }
  .hp-btn { padding: 8px 2px; }
  .hp-btn .hp-num { font-size: 13px; }
  .hp-btn .hp-tag { font-size: 8px; }
  .metrics-strip { grid-template-columns: 1fr 1fr; }
  .metric-val { font-size: 20px; }
  .field-row { grid-template-columns: 1fr; }
  .sf-btns { grid-template-columns: repeat(3, 1fr); }
  .sf-btn { padding: 8px 2px; }
  .sf-pct { font-size: 14px; }
  .cost-range { font-size: 18px; }
  .dl-btn { margin: 0 12px 16px; width: calc(100% - 24px); }
}
@media (max-width: 420px) {
  .type-tabs { grid-template-columns: 1fr; }
  .tab-icon-wrap { width: 40px; height: 40px; font-size: 20px; }
}