/* ════════════════════════════════════════════════════════════════
   Electrician PMS — Modern UI Design System
   ════════════════════════════════════════════════════════════════ */

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

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

:root {
  --blue:        #1F4E79;
  --blue-mid:    #2E75B6;
  --blue-light:  #EAF2FB;
  --blue-soft:   #f3f8fe;
  --green:       #16a34a;
  --green-bg:    #dcfce7;
  --green-text:  #166534;
  --red:         #dc2626;
  --red-bg:      #fee2e2;
  --red-text:    #991b1b;
  --amber-bg:    #fef3c7;
  --amber-text:  #92400e;
  --grey:        #64748b;
  --grey-light:  #f1f5f9;
  --bg:          #f6f8fb;
  --border:      #e2e8f0;
  --border-soft: #eef2f7;
  --white:       #ffffff;
  --text:        #0f172a;
  --text-soft:   #475569;
  --muted:       #94a3b8;
  --shadow-sm:   0 1px 2px rgba(15,23,42,0.04), 0 1px 3px rgba(15,23,42,0.06);
  --shadow:      0 4px 16px rgba(15,23,42,0.06), 0 1px 3px rgba(15,23,42,0.05);
  --shadow-focus:0 0 0 4px rgba(46,117,182,0.15);
  --radius:      16px;
  --radius-sm:   10px;
  --ease:        cubic-bezier(0.4, 0, 0.2, 1);
}

html, body {
  height: 100%;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

#app { min-height: 100vh; display: flex; flex-direction: column; }

/* ── Header ─────────────────────────────────────────────────── */
.app-header {
  background: linear-gradient(135deg, #1F4E79 0%, #2E75B6 100%);
  color: white;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 20px rgba(31,78,121,0.28);
}
.app-header .back-btn {
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.18);
  color: white;
  width: 38px; height: 38px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 20px;
  display: none;
  align-items: center;
  justify-content: center;
  transition: background 0.2s var(--ease), transform 0.1s var(--ease);
  flex-shrink: 0;
}
.app-header .back-btn:hover { background: rgba(255,255,255,0.28); }
.app-header .back-btn:active { transform: scale(0.94); }
.app-header .back-btn.visible { display: flex; }
.app-header .header-title { flex: 1; min-width: 0; }
.app-header h1 { font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }
.app-header .header-sub { font-size: 12.5px; opacity: 0.82; margin-top: 2px; font-weight: 500; }

.progress-bar-wrap {
  background: rgba(255,255,255,0.22);
  height: 4px; position: absolute; bottom: 0; left: 0; right: 0;
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, #90CAF9, #ffffff);
  border-radius: 0 4px 4px 0;
  transition: width 0.45s var(--ease);
  box-shadow: 0 0 8px rgba(144,202,249,0.6);
}

/* ── Screen ─────────────────────────────────────────────────── */
.screen {
  display: none; flex: 1;
  padding: 22px 16px 40px;
  max-width: 680px; width: 100%; margin: 0 auto;
  animation: fadeIn 0.3s var(--ease);
}
.screen.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* ── Cards ──────────────────────────────────────────────────── */
.card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 22px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.25s var(--ease);
}
.card:hover { box-shadow: var(--shadow); }
.card-title {
  font-size: 15px; font-weight: 700; color: var(--blue);
  margin-bottom: 18px; padding-bottom: 12px;
  border-bottom: 1px solid var(--border-soft);
  letter-spacing: -0.01em; display: flex; align-items: center; gap: 8px;
}
.card-title .required { color: var(--red); margin-left: 2px; }

/* ── Forms ──────────────────────────────────────────────────── */
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--text-soft); margin-bottom: 7px;
}
.form-group label .required { color: var(--red); margin-left: 2px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 14px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-size: 15px; font-family: inherit; color: var(--text);
  background: #fcfdfe;
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease), background 0.18s var(--ease);
  -webkit-appearance: none;
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--muted); }
.form-group input:hover, .form-group select:hover, .form-group textarea:hover { border-color: #cbd5e1; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--blue-mid); box-shadow: var(--shadow-focus); background: var(--white);
}
.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center;
  padding-right: 40px; cursor: pointer;
}
.form-group textarea { min-height: 84px; resize: vertical; line-height: 1.5; }
.form-group .hint { font-size: 12.5px; color: var(--grey); margin-top: 6px; }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: block; width: 100%; padding: 14px 18px;
  border: none; border-radius: 12px;
  font-size: 15.5px; font-weight: 600; font-family: inherit;
  cursor: pointer; text-align: center; letter-spacing: 0.01em;
  transition: transform 0.1s var(--ease), filter 0.2s var(--ease);
  margin-bottom: 10px;
}
.btn:hover { filter: brightness(1.04); }
.btn:active { transform: translateY(1px) scale(0.99); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; filter: none; }
.btn-primary { background: linear-gradient(135deg, #2E75B6 0%, #1F4E79 100%); color: white; box-shadow: 0 4px 14px rgba(46,117,182,0.28); }
.btn-success { background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%); color: white; box-shadow: 0 4px 14px rgba(22,163,74,0.28); }
.btn-outline { background: white; color: var(--blue-mid); border: 1.5px solid var(--blue-mid); box-shadow: none; }
.btn-outline:hover { background: var(--blue-soft); filter: none; }
.btn-grey { background: var(--white); color: var(--text-soft); border: 1.5px solid var(--border); box-shadow: none; }
.btn-grey:hover { background: var(--grey-light); filter: none; }
.btn-sm { padding: 10px; font-size: 13px; border-radius: 9px; margin: 0; font-weight: 600; }

/* ── Toggle (Yes/No) ────────────────────────────────────────── */
.toggle-wrap {
  display: flex; border-radius: 12px; overflow: hidden;
  border: 1.5px solid var(--border); background: var(--grey-light);
  padding: 4px; gap: 4px;
}
.toggle-wrap .toggle-opt {
  flex: 1; padding: 11px; text-align: center;
  font-size: 14.5px; font-weight: 600; cursor: pointer;
  background: transparent; color: var(--grey);
  transition: all 0.2s var(--ease); border: none; border-radius: 8px; user-select: none;
}
.toggle-wrap .toggle-opt:hover { color: var(--text); }
.toggle-wrap .toggle-opt.active-solved   { background: var(--green); color: white; box-shadow: 0 2px 8px rgba(22,163,74,0.3); }
.toggle-wrap .toggle-opt.active-unsolved { background: var(--red);   color: white; box-shadow: 0 2px 8px rgba(220,38,38,0.3); }

/* ── Checkpoint rows (electrician PMS) ──────────────────────── */
.checkpoint {
  padding: 14px 0;
  border-bottom: 1px solid var(--border-soft);
}
.checkpoint:first-of-type { padding-top: 0; }
.checkpoint:last-child { border-bottom: none; padding-bottom: 0; }
.checkpoint-label {
  font-size: 14.5px; font-weight: 600; color: var(--text);
  margin-bottom: 10px;
}
.cp-toggle { max-width: 240px; margin-bottom: 10px; }
.cp-remarks {
  width: 100%; padding: 10px 13px;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  font-size: 14px; font-family: inherit; color: var(--text);
  background: #fcfdfe; margin-bottom: 10px;
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
.cp-remarks::placeholder { color: var(--muted); }
.cp-remarks:focus { outline: none; border-color: var(--blue-mid); box-shadow: var(--shadow-focus); background: #fff; }
.cp-photo-row { display: flex; align-items: center; gap: 12px; }
.cp-photo-btn {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 8px 14px; border-radius: var(--radius-sm);
  border: 1.5px dashed #cbd5e1; background: var(--blue-soft);
  color: var(--text-soft); font-size: 13px; font-weight: 600;
  cursor: pointer; transition: all 0.15s var(--ease);
}
.cp-photo-btn:hover { border-color: var(--blue-mid); background: var(--blue-light); }
.cp-photo-btn.has-photo { border-style: solid; border-color: var(--green); background: var(--green-bg); color: var(--green-text); }
.cp-photo-clear { font-size: 12.5px; color: var(--red); cursor: pointer; font-weight: 600; }
.cp-photo-clear:hover { text-decoration: underline; }

/* ── Signature ──────────────────────────────────────────────── */
.signature-wrap {
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  overflow: hidden; position: relative; background: white;
}
#signature-canvas { display: block; width: 100%; height: 184px; touch-action: none; cursor: crosshair; }
.signature-actions { display: flex; gap: 8px; margin-top: 10px; }
.sig-placeholder {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  color: #cbd5e1; font-size: 14px; pointer-events: none; font-weight: 500;
}

/* ── Summary ────────────────────────────────────────────────── */
.summary-row { display: flex; padding: 12px 0; border-bottom: 1px solid var(--border-soft); font-size: 14px; gap: 12px; }
.summary-row:last-child { border-bottom: none; }
.summary-label { color: var(--grey); min-width: 124px; font-size: 13px; flex-shrink: 0; font-weight: 500; }
.summary-value { color: var(--text); font-weight: 600; flex: 1; }

/* ── Alerts ─────────────────────────────────────────────────── */
.alert { padding: 14px 16px; border-radius: var(--radius-sm); font-size: 14px; margin-bottom: 16px; line-height: 1.5; border: 1px solid transparent; }
.alert-error   { background: var(--red-bg);   color: var(--red-text);   border-color: #fecaca; }
.alert-success { background: var(--green-bg); color: var(--green-text); border-color: #bbf7d0; }
.alert-info    { background: var(--blue-soft); color: var(--blue);      border-color: #cfe3f9; }

/* ── Spinner ────────────────────────────────────────────────── */
.spinner-wrap { text-align: center; padding: 48px 20px; color: var(--grey); font-size: 14px; }
.spinner { width: 38px; height: 38px; border: 4px solid var(--border); border-top-color: var(--blue-mid); border-radius: 50%; animation: spin 0.7s linear infinite; margin: 0 auto 14px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Confirmation ───────────────────────────────────────────── */
.confirm-icon {
  width: 88px; height: 88px; border-radius: 50%;
  background: linear-gradient(135deg, var(--green-bg), #bbf7d0);
  color: var(--green); font-size: 42px;
  display: flex; align-items: center; justify-content: center;
  margin: 24px auto 18px; box-shadow: 0 8px 24px rgba(22,163,74,0.22);
  animation: pop 0.4s var(--ease);
}
@keyframes pop { 0% { transform: scale(0.6); opacity: 0; } 60% { transform: scale(1.08); } 100% { transform: scale(1); opacity: 1; } }
.confirm-title { text-align: center; font-size: 23px; font-weight: 800; color: var(--text); margin-bottom: 8px; letter-spacing: -0.02em; }
.confirm-sub { text-align: center; color: var(--grey); font-size: 14.5px; margin-bottom: 26px; max-width: 420px; margin-left: auto; margin-right: auto; }
.fsr-ref { text-align: center; background: linear-gradient(135deg, var(--blue-soft), var(--blue-light)); border: 1px solid #cfe3f9; border-radius: var(--radius); padding: 20px; margin-bottom: 22px; }
.fsr-ref .ref-label { font-size: 11.5px; color: var(--grey); text-transform: uppercase; letter-spacing: 0.8px; font-weight: 600; }
.fsr-ref .ref-num { font-size: 28px; font-weight: 800; color: var(--blue); margin-top: 4px; letter-spacing: -0.01em; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (min-width: 768px) {
  .screen { padding: 32px 24px 48px; }
  .app-header { padding: 18px 32px; }
}
@media (max-width: 420px) {
  .screen { padding: 16px 12px 32px; }
  .card { padding: 18px; }
  #signature-canvas { height: 158px; }
  .app-header h1 { font-size: 16.5px; }
  .cp-toggle { max-width: none; }
}

@media print {
  .app-header, .btn, .cp-photo-row, .signature-actions { display: none !important; }
  .card { box-shadow: none; border: 1px solid #ddd; }
  body { background: white; }
}