/* ============================================
   CALCULATOR PAGE — Alpha Ceiling
   Dark-mode, matches site design system
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

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

:root {
  --bg:         #0a0a0f;
  --bg-card:    #13131c;
  --bg-input:   #1a1a28;
  --border:     #2a2a40;
  --accent:     #6c63ff;
  --accent-2:   #a78bfa;
  --success:    #22d3a5;
  --danger:     #f87171;
  --text:       #e8e8f0;
  --text-muted: #7070a0;
  --radius:     12px;
  --shadow:     0 4px 24px rgba(0,0,0,0.5);
  --canvas-bg:  #0d0d18;
  --grid:       rgba(108,99,255,0.1);
  --grid-sub:   rgba(108,99,255,0.05);
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---- HEADER ---- */
.calc-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10,10,15,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.calc-header .logo-link { display: flex; align-items: center; gap: .75rem; text-decoration: none; }
.calc-header .logo-img  { height: 36px; border-radius: 6px; }
.calc-header .logo-name { font-weight: 700; font-size: 1rem; color: var(--text); }
.calc-header nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: .875rem;
  font-weight: 500;
  transition: color .2s;
  margin-left: 1.5rem;
}
.calc-header nav a:hover, .calc-header nav a.active { color: var(--accent-2); }

/* ---- PAGE TITLE ---- */
.calc-page-title {
  padding: 2rem 2rem 1rem;
  text-align: center;
}
.calc-page-title h1 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-2), var(--success));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: .5rem;
}
.calc-page-title p { color: var(--text-muted); font-size: .9rem; }

/* ---- MAIN LAYOUT ---- */
.calc-layout {
  display: grid;
  grid-template-columns: 300px 1fr 280px;
  gap: 1rem;
  padding: 1rem 2rem 2rem;
  flex: 1;
  min-height: 0;
}

/* ---- PANEL BASE ---- */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.panel-title {
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent-2);
  border-bottom: 1px solid var(--border);
  padding-bottom: .75rem;
}

/* ---- LEFT PANEL: INPUTS ---- */
.input-group { display: flex; flex-direction: column; gap: .4rem; }
.input-group label { font-size: .8rem; color: var(--text-muted); font-weight: 500; }
.input-group input, .input-group select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: .9rem;
  padding: .5rem .75rem;
  width: 100%;
  transition: border-color .2s;
  outline: none;
}
.input-group input:focus, .input-group select:focus { border-color: var(--accent); }
.input-group input::placeholder { color: var(--text-muted); }

/* Direction picker */
.dir-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 4px;
  width: 120px;
  margin: 0 auto;
}
.dir-btn {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 1;
  transition: background .15s, color .15s, border-color .15s, transform .1s;
}
.dir-btn:hover { background: var(--bg-card); color: var(--text); border-color: var(--accent); }
.dir-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  transform: scale(1.08);
}
.dir-placeholder { background: transparent; border: none; pointer-events: none; }

/* Buttons */
.btn {
  border: none;
  border-radius: 8px;
  font-family: inherit;
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  padding: .6rem 1rem;
  transition: opacity .2s, transform .1s, background .2s;
  text-align: center;
  width: 100%;
}
.btn:active { transform: scale(.97); }
.btn-primary  { background: var(--accent); color: #fff; }
.btn-primary:hover  { opacity: .88; }
.btn-success  { background: var(--success); color: #0a0a0f; }
.btn-success:hover  { opacity: .88; }
.btn-danger   { background: var(--danger); color: #0a0a0f; }
.btn-danger:hover   { opacity: .88; }
.btn-ghost    { background: transparent; border: 1px solid var(--border); color: var(--text-muted); }
.btn-ghost:hover    { border-color: var(--accent); color: var(--text); }
.btn-sm { padding: .35rem .75rem; font-size: .8rem; width: auto; }

.btn-row { display: flex; gap: .5rem; }
.btn-row .btn { flex: 1; }

/* Segments table */
.seg-table-wrap { flex: 1; overflow-y: auto; }
.seg-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .78rem;
}
.seg-table th {
  color: var(--text-muted);
  font-weight: 600;
  text-align: left;
  padding: .3rem .4rem;
  border-bottom: 1px solid var(--border);
}
.seg-table td { padding: .3rem .4rem; border-bottom: 1px solid rgba(255,255,255,0.04); }
.seg-table tr:last-child td { border-bottom: none; }
.seg-label { color: var(--accent-2); font-weight: 700; }
.seg-delete { cursor: pointer; color: var(--danger); font-size: .9rem; background: none; border: none; padding: 0 .2rem; }
.seg-table-empty { color: var(--text-muted); font-size: .8rem; text-align: center; padding: 1.5rem 0; }

/* ---- CENTER PANEL: CANVAS ---- */
.canvas-wrap {
  position: relative;
  background: var(--canvas-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  min-height: 480px;
  display: flex;
  flex-direction: column;
}
#roomCanvas {
  display: block;
  width: 100%;
  flex: 1;
  cursor: crosshair;
}
.canvas-toolbar {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .6rem 1rem;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
  flex-wrap: wrap;
}
.canvas-info {
  margin-left: auto;
  font-size: .8rem;
  color: var(--text-muted);
}
.canvas-info span { color: var(--success); font-weight: 700; margin-left: .3rem; }

/* Closed polygon badge */
.closed-badge {
  display: none;
  position: absolute;
  top: .75rem;
  right: .75rem;
  background: linear-gradient(135deg, var(--success), #16a34a);
  color: #fff;
  font-size: .75rem;
  font-weight: 700;
  padding: .25rem .75rem;
  border-radius: 999px;
  letter-spacing: .05em;
}
.closed-badge.visible { display: block; }

/* ---- RIGHT PANEL: RESULT ---- */
.result-area { font-size: .85rem; }
.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .5rem 0;
  border-bottom: 1px solid var(--border);
}
.result-row:last-child { border-bottom: none; }
.result-label { color: var(--text-muted); }
.result-val { font-weight: 700; color: var(--text); }
.result-val.accent { color: var(--accent-2); }
.result-val.success { color: var(--success); font-size: 1.1rem; }

.price-lines { display: flex; flex-direction: column; gap: .5rem; }
.price-line {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .5rem .75rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.price-line select {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-family: inherit;
  font-size: .82rem;
  outline: none;
}
.price-line select option { background: var(--bg-card); }
.price-line .line-price { font-size: .82rem; color: var(--success); font-weight: 600; white-space: nowrap; }
.price-line .line-del { background: none; border: none; color: var(--danger); cursor: pointer; font-size: .9rem; }

.total-block {
  background: linear-gradient(135deg, rgba(108,99,255,.12), rgba(167,139,250,.06));
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
}
.total-block .total-label { font-size: .75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .08em; }
.total-block .total-sum { font-size: 1.6rem; font-weight: 800; color: var(--success); }
.total-block .total-hint { font-size: .72rem; color: var(--text-muted); margin-top: .25rem; }

/* ---- NOMENCLATURE MANAGER MODAL ---- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.75);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity .25s;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: min(680px, 96vw);
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  transform: translateY(20px);
  transition: transform .25s;
}
.modal-overlay.open .modal-box { transform: translateY(0); }
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
.modal-head h2 { font-size: 1rem; font-weight: 700; }
.modal-close {
  background: none; border: none; color: var(--text-muted);
  font-size: 1.5rem; cursor: pointer; line-height: 1;
  transition: color .2s;
}
.modal-close:hover { color: var(--danger); }
.modal-body { padding: 1.25rem 1.5rem; overflow-y: auto; flex: 1; display: flex; flex-direction: column; gap: 1rem; }

.nom-table { width: 100%; border-collapse: collapse; font-size: .85rem; }
.nom-table th { color: var(--text-muted); font-weight: 600; text-align: left; padding: .5rem; border-bottom: 1px solid var(--border); }
.nom-table td { padding: .4rem .5rem; border-bottom: 1px solid rgba(255,255,255,0.04); vertical-align: middle; }
.nom-table input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-family: inherit;
  font-size: .82rem;
  padding: .3rem .5rem;
  width: 100%;
  outline: none;
}
.nom-table input:focus { border-color: var(--accent); }
.nom-add-row { display: flex; gap: .5rem; align-items: center; }
.nom-add-row input { flex: 1; }

/* ---- LEAD FORM MODAL ---- */
.lead-form-group { display: flex; flex-direction: column; gap: .4rem; }
.lead-form-group label { font-size: .8rem; color: var(--text-muted); }
.lead-form-group input, .lead-form-group textarea {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-family: inherit;
  font-size: .9rem;
  padding: .55rem .8rem;
  outline: none;
  transition: border-color .2s;
  resize: vertical;
}
.lead-form-group input:focus, .lead-form-group textarea:focus { border-color: var(--accent); }
.form-agreement { font-size: .72rem; color: var(--text-muted); text-align: center; }
.form-agreement a { color: var(--accent-2); }

/* ---- SUCCESS MESSAGE ---- */
.success-msg {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: .75rem;
  text-align: center;
  padding: 1.5rem 0;
}
.success-msg.show { display: flex; }
.success-icon { font-size: 3rem; }
.success-msg h3 { font-size: 1.1rem; font-weight: 700; }
.success-msg p { color: var(--text-muted); font-size: .85rem; }

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ---- RESPONSIVE ---- */
@media (max-width: 1100px) {
  .calc-layout { grid-template-columns: 260px 1fr 250px; }
}
@media (max-width: 900px) {
  .calc-layout { grid-template-columns: 1fr; padding: .75rem; }
  .canvas-wrap { min-height: 360px; }
}
@media (max-width: 600px) {
  .calc-header { padding: 0 1rem; }
  .calc-page-title { padding: 1.25rem 1rem .75rem; }
}