@import url("https://cdn.jsdelivr.net/gh/rastikerdar/vazirmatn@v33.003/Vazirmatn-font-face.css");
@import url("https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600&display=swap");

:root {
  --primary: #1E88E5;
  --secondary: #1565C0;
  --accent: #FF9800;
  --success: #4CAF50;
  --bg: #F5F7FA;
  --card: #FFFFFF;
  --text: #263238;
  --text-sub: #607D8B;
  --border: #E3E8EE;
  --danger: #E53935;
  --shadow: 0 2px 10px rgba(38, 54, 63, 0.06);
  --shadow-lg: 0 8px 28px rgba(38, 54, 63, 0.12);
  --radius: 14px;
  --font-ui: "Vazirmatn", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
}

[data-theme="dark"] {
  --primary: #42A5F5;
  --secondary: #64B5F6;
  --accent: #FFB74D;
  --success: #66BB6A;
  --bg: #121A21;
  --card: #1B2530;
  --text: #ECEFF1;
  --text-sub: #90A4AE;
  --border: #2C3A47;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  direction: rtl;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  padding-bottom: 76px;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 28px 28px;
  background-attachment: fixed;
  background-position: center top;
}
[data-theme="dark"] body { background-image: linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px); }

button, input, select { font-family: inherit; }

a { color: inherit; text-decoration: none; }

.hidden { display: none !important; }

/* ------------------------------- Topbar ---------------------------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar-title { font-weight: 700; font-size: 15px; }
.brand-mini { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-sub); font-weight: 600; }
.brand-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 20%, transparent); }

.icon-btn {
  border: none;
  background: var(--card);
  color: var(--text);
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow);
}
.icon-btn:hover { color: var(--primary); }

/* -------------------------------- Layout ---------------------------------- */
#app { max-width: 720px; margin: 0 auto; }
.view { padding: 16px; display: flex; flex-direction: column; gap: 16px; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

/* -------------------------------- Buttons --------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 12px;
  border: none;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, opacity .15s ease;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 16px color-mix(in srgb, var(--primary) 35%, transparent); }
.btn-primary:hover { background: var(--secondary); }
.btn-accent { background: var(--accent); color: #26150; color: #2B1900; box-shadow: 0 6px 16px color-mix(in srgb, var(--accent) 35%, transparent); }
.btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.full-w { width: 100%; }

/* --------------------------------- Hero ------------------------------------ */
.hero { text-align: center; padding: 28px 20px; position: relative; overflow: hidden; }
.hero-logo { color: var(--primary); margin-bottom: 10px; display: flex; justify-content: center; }
.hero h1 { margin: 4px 0; font-size: 24px; letter-spacing: -0.02em; }
.hero-sub { color: var(--text-sub); font-size: 14px; line-height: 1.9; margin: 8px 0 18px; }
.hero-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* ------------------------------ Install card ------------------------------- */
.install-card { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.install-info { display: flex; gap: 12px; align-items: flex-start; }
.install-icon { color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent); width: 42px; height: 42px; border-radius: 10px; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.install-info p { margin: 4px 0 0; color: var(--text-sub); font-size: 13px; line-height: 1.7; }

/* ------------------------------ Section head -------------------------------- */
.section-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.section-head h2 { font-size: 16px; margin: 0; }
.link-more { color: var(--primary); font-size: 13px; font-weight: 700; }

/* ------------------------------ Project/unit cards -------------------------- */
.project-grid, .unit-list { display: grid; gap: 12px; }
.project-card, .unit-card { cursor: pointer; transition: box-shadow .15s ease, transform .15s ease; }
.project-card:hover, .unit-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-1px); }
.pc-top { display: flex; justify-content: space-between; align-items: center; }
.pc-name { font-weight: 700; font-size: 14.5px; }
.pc-badge { background: color-mix(in srgb, var(--primary) 14%, transparent); color: var(--primary); font-size: 11px; padding: 3px 9px; border-radius: 20px; font-weight: 700; }
.pc-meta { color: var(--text-sub); font-size: 12.5px; margin-top: 6px; }
.pc-date { color: var(--text-sub); font-size: 11px; margin-top: 8px; font-family: var(--font-mono); }
.pc-delete { width: 30px; height: 30px; color: var(--danger); background: color-mix(in srgb, var(--danger) 10%, transparent); }
.unit-delete { width: 30px; height: 30px; color: var(--danger); background: color-mix(in srgb, var(--danger) 10%, transparent); border: none; border-radius: 8px; cursor: pointer; display: flex; align-items: center; justify-content: center; }

.empty-state { text-align: center; color: var(--text-sub); padding: 28px 16px; }
.empty-state p { margin: 0 0 12px; }

/* ---------------------------------- Forms ----------------------------------- */
.form-card h3 { margin-top: 0; }
.form-card label { display: block; font-size: 13px; color: var(--text-sub); margin: 12px 0 6px; font-weight: 600; }
.form-card input[type="text"], .form-card input[type="number"], .form-card select {
  width: 100%;
  padding: 11px 12px;
  border-radius: 10px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  font-family: var(--font-mono);
}
.form-card select { font-family: var(--font-ui); }
.form-card input:focus, .form-card select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 18%, transparent); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.checkbox-line { display: flex; align-items: center; gap: 8px; font-weight: 600; color: var(--text); }
.checkbox-line input { width: auto; }
fieldset { border: 1px dashed var(--border); border-radius: 10px; padding: 4px 14px 14px; margin: 14px 0 0; }
legend { font-size: 12px; font-weight: 700; color: var(--primary); padding: 0 6px; }
.form-errors { margin-top: 10px; }
.err-line { color: var(--danger); font-size: 12.5px; background: color-mix(in srgb, var(--danger) 8%, transparent); padding: 8px 10px; border-radius: 8px; margin-top: 6px; }

.color-picker { display: flex; gap: 10px; flex-wrap: wrap; }
.color-swatch { width: 34px; height: 34px; border-radius: 50%; border: 2px solid var(--border); cursor: pointer; }
.color-swatch.selected { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 25%, transparent); }

/* --------------------------------- Stats grid -------------------------------- */
.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 6px; }
.stat-card.accent { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; border: none; grid-column: span 2; }
.stat-label { font-size: 12px; color: var(--text-sub); }
.stat-card.accent .stat-label { color: rgba(255,255,255,0.85); }
.stat-value { font-size: 18px; font-weight: 800; font-family: var(--font-mono); }

/* ---------------------------------- Cost rows --------------------------------- */
.cost-row { display: flex; justify-content: space-between; padding: 9px 0; border-bottom: 1px dashed var(--border); font-size: 13.5px; }
.cost-row span:last-child { font-family: var(--font-mono); font-weight: 600; }
.cost-row.total { font-weight: 800; font-size: 15px; color: var(--primary); border-bottom: none; padding-top: 12px; }
.cost-row.waste-note { color: var(--text-sub); font-size: 12px; border-top: 1px solid var(--border); margin-top: 6px; }

.hw-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; font-size: 12.5px; }
.hw-grid div { background: var(--bg); border-radius: 10px; padding: 10px; text-align: center; }
.hw-grid b { display: block; font-family: var(--font-mono); font-size: 16px; margin-top: 4px; color: var(--primary); }

.unit-detail { border-bottom: 1px solid var(--border); padding: 10px 0; }
.unit-detail summary { cursor: pointer; font-weight: 700; font-size: 13.5px; }

/* --------------------------------- Sticky actions ------------------------------ */
.sticky-actions { position: sticky; bottom: 76px; z-index: 5; }

/* ----------------------------------- Bottom nav --------------------------------- */
.bottomnav {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  background: var(--card);
  border-top: 1px solid var(--border);
  z-index: 20;
}
.bn-item { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 3px; padding: 10px 0 8px; color: var(--text-sub); font-size: 11px; font-weight: 600; }
.bn-item.active { color: var(--primary); }

/* ------------------------------------- Toast ------------------------------------ */
#toast {
  position: fixed;
  bottom: 90px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--text);
  color: var(--bg);
  padding: 10px 18px;
  border-radius: 30px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease, transform .2s ease;
  z-index: 50;
  white-space: nowrap;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* -------------------------------------- Report ----------------------------------- */
.report-actions { display: flex; gap: 10px; }
.report-sheet { font-size: 13px; }
.report-head { display: flex; justify-content: space-between; align-items: flex-start; border-bottom: 2px solid var(--primary); padding-bottom: 14px; margin-bottom: 14px; }
.report-head h2 { margin: 0 0 6px; font-size: 17px; }
.report-head p { margin: 2px 0; color: var(--text-sub); font-size: 12.5px; }
.report-logo { display: flex; flex-direction: column; align-items: center; gap: 4px; color: var(--primary); font-size: 11px; font-weight: 700; }
.report-table { width: 100%; border-collapse: collapse; margin-bottom: 18px; font-size: 12.5px; }
.report-table th, .report-table td { border: 1px solid var(--border); padding: 7px 9px; text-align: right; }
.report-table th { background: var(--bg); font-weight: 700; }
.report-table td:last-child, .report-table th:last-child { font-family: var(--font-mono); }
.total-row td { font-weight: 800; color: var(--primary); background: color-mix(in srgb, var(--primary) 8%, transparent); }
.report-footer { color: var(--text-sub); font-size: 11px; text-align: center; margin-top: 10px; }

@media print {
  .topbar, .bottomnav, .no-print { display: none !important; }
  body { background: #fff; padding: 0; }
  .report-sheet { box-shadow: none; border: none; }
}

/* ---------------------------------- Responsive ------------------------------------ */
@media (min-width: 760px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 420px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .hw-grid { grid-template-columns: repeat(2, 1fr); }
}