/* ============================================================
   RENEW WATER — styles.css
   Mobile-First · Card UI · Soft Inputs · Premium Design
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;600;700;800&display=swap');

/* ════════════════════════════════════════════════════════════
   1. DESIGN TOKENS
════════════════════════════════════════════════════════════ */
:root {
  /* Brand */
  --primary:       #0e7fab;
  --primary-dark:  #0a5f84;
  --primary-light: #29a8d4;
  --accent:        #00c4a7;
  --accent-dark:   #009e88;

  /* Neutral palette */
  --bg-app:        #f8fafc;
  --bg-card:       #ffffff;
  --bg-input:      #f8fafc;
  --bg-input-focus:#ffffff;

  /* Text */
  --text-heading:  #0f172a;
  --text-body:     #334155;
  --text-label:    #64748b;
  --text-muted:    #94a3b8;
  --text-white:    #ffffff;

  /* Borders */
  --border-light:  #e2e8f0;
  --border-focus:  #00c4a7;

  /* Feedback */
  --error:   #ef4444;
  --success: #10b981;

  /* Card system */
  --card-radius:  20px;
  --card-shadow:  0 4px 20px rgba(0,0,0,0.04);
  --card-shadow-hover: 0 8px 30px rgba(14,127,171,0.08);
  --card-gap:     24px;

  /* Input */
  --input-radius:  12px;
  --input-padding: 14px 16px;
  --input-height:  52px;

  /* Motion */
  --ease: 0.25s cubic-bezier(0.4,0,0.2,1);
}

/* ════════════════════════════════════════════════════════════
   2. RESET & BASE
════════════════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-app);
  color: var(--text-body);
  min-height: 100vh;
  font-size: 16px; /* 16px base prevents iOS input zooming */
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

/* ════════════════════════════════════════════════════════════
   3. HEADER
════════════════════════════════════════════════════════════ */
.app-header {
  background: linear-gradient(135deg, rgba(10, 74, 110, 1) 0%, rgba(14, 127, 171, 1) 55%, rgba(0, 196, 167, 1) 100%);
  padding: 1rem 1.25rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 20px rgba(0,0,0,0.1);
}

.header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Logo */
.logo-mark {
  height: 48px;
  width: auto;
  max-width: 150px;
  object-fit: contain;
  flex-shrink: 0;
  display: block;
}

.header-text h1 {
  font-family: 'Outfit', sans-serif;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: 0.3px;
  line-height: 1.2;
}

.header-text p {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.7);
  letter-spacing: 0.7px;
  text-transform: uppercase;
}

/* ════════════════════════════════════════════════════════════
   4. TAB NAVIGATION
════════════════════════════════════════════════════════════ */
.tab-nav {
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 2px solid rgba(226,232,240,0.6);
  position: sticky;
  top: 74px;
  z-index: 90;
  box-shadow: 0 4px 12px rgba(0,0,0,0.03);
}

.tab-nav-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.tab-nav-inner::-webkit-scrollbar { display: none; }

.tab-btn {
  flex: 1;
  min-width: 160px;
  min-height: 52px;
  padding: 0 1.25rem;
  border: none;
  background: transparent;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-label);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: all var(--ease);
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
}

.tab-btn:hover       { color: var(--primary); background: #f0f9ff; }
.tab-btn.active      { color: var(--primary); border-bottom-color: var(--accent); }
.tab-btn .tab-icon   { font-size: 1.1rem; }

/* ════════════════════════════════════════════════════════════
   5. MAIN CONTENT WRAPPER
════════════════════════════════════════════════════════════ */
.main-content {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.25rem 1rem 3rem;
}

/* Form panel animation */
.form-panel        { display: none; animation: fadeUp 0.3s ease; }
.form-panel.active { display: block; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ════════════════════════════════════════════════════════════
   6. PROGRESS BREADCRUMB
════════════════════════════════════════════════════════════ */
.form-progress {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.progress-step {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.progress-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--border-light);
}

.progress-step.done .progress-dot { background: var(--accent); }
.progress-step.done               { color: var(--accent); }
.progress-arrow                   { color: var(--border-light); font-size: 0.65rem; }

/* ════════════════════════════════════════════════════════════
   7. CARD SYSTEM — Form Section Cards
════════════════════════════════════════════════════════════ */
.form-section {
  background: var(--bg-card);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  margin-bottom: var(--card-gap);
  overflow: hidden;
  border: 1px solid rgba(226,232,240,0.8);
  transition: box-shadow var(--ease);
}

.form-section:hover { box-shadow: var(--card-shadow-hover); }

/* Section header bar */
.section-header {
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Gradient variants */
.section-header.blue-grad  { background: linear-gradient(135deg, #0a4a6e 0%, #0e7fab 100%); color: #fff; }
.section-header.teal-grad  { background: linear-gradient(135deg, #0e7fab 0%, #00c4a7 100%); color: #fff; }
.section-header.green-grad { background: linear-gradient(135deg, #00c4a7 0%, #34d399 100%); color: #fff; }
.section-header.navy-grad  { background: linear-gradient(135deg, #06304a 0%, #0e5f84 100%); color: #fff; }

.section-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.section-header h2 {
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
}

.section-header p { font-size: 0.75rem; opacity: 0.75; margin-top: 1px; }

/* Card body — padding */
.section-body { padding: 1.25rem; }

/* Optional badge */
.optional-badge {
  display: inline-block;
  padding: 0.12rem 0.55rem;
  background: rgba(255,255,255,0.2);
  border-radius: 20px;
  font-size: 0.68rem;
  font-weight: 500;
}

/* ════════════════════════════════════════════════════════════
   8. FIELD GRID — Mobile-First
   Default: 1 column (mobile)
   768px+:  auto 2-col
   1024px+: auto 3-col
════════════════════════════════════════════════════════════ */
.field-grid {
  display: grid;
  grid-template-columns: 1fr;   /* ← Mobile: single column */
  gap: 1rem;
}

.field-group           { display: flex; flex-direction: column; gap: 0.3rem; }
.field-group.span-2    { grid-column: span 1; }  /* reset on mobile */
.field-group.span-full { grid-column: 1 / -1; }

/* ════════════════════════════════════════════════════════════
   9. LABELS
════════════════════════════════════════════════════════════ */
label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-label);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 4px;
}

label .required { color: var(--accent); margin-left: 2px; }

/* ════════════════════════════════════════════════════════════
   10. INPUTS — Modern Soft UI
════════════════════════════════════════════════════════════ */
input[type="text"],
input[type="number"],
input[type="date"],
input[type="email"],
input[type="tel"],
input[type="password"],
textarea,
select {
  width: 100%;
  min-height: var(--input-height);   /* 48px touch target */
  padding: var(--input-padding);
  border: 1px solid var(--border-light);
  border-radius: var(--input-radius);
  background: var(--bg-input);
  color: var(--text-heading);
  font-family: 'Inter', sans-serif;
  font-size: 16px; /* Critical: 16px avoids iOS auto-zoom */
  transition: border-color var(--ease), box-shadow var(--ease), background var(--ease);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--border-focus);
  background: var(--bg-input-focus);
  box-shadow: 0 0 0 3px rgba(0,196,167,0.15);
}

input::placeholder, textarea::placeholder { color: var(--text-muted); font-size: 0.9rem; }
textarea            { resize: vertical; min-height: 90px; }
input.error         { border-color: var(--error); box-shadow: 0 0 0 3px rgba(239,68,68,0.1); }

/* Fix date/time on iOS */
input[type="date"] { cursor: pointer; }

/* Password Visibility Toggle */
.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-icon .eye-toggle {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  z-index: 5;
  transition: color var(--ease);
}

.input-with-icon .eye-toggle:hover {
  color: var(--primary);
}

.input-with-icon input {
  padding-right: 46px !important;
}

/* ════════════════════════════════════════════════════════════
   11. SUB-SECTION LABELS & DIVIDERS
════════════════════════════════════════════════════════════ */
.sub-section-title {
  grid-column: 1 / -1;
  font-family: 'Outfit', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 0.5rem 0 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sub-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border-light), transparent);
}

.field-divider {
  grid-column: 1 / -1;
  height: 1px;
  background: var(--border-light);
  margin: 0.4rem 0;
}

/* ════════════════════════════════════════════════════════════
   12. PILL-STYLE RADIO & CHECKBOX
════════════════════════════════════════════════════════════ */
.pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.25rem;
  border: 1px solid transparent;
  transition: all var(--ease);
}

.pill-group.error {
  border-color: var(--error);
  padding: 8px;
  border-radius: 16px;
  background: rgba(239, 68, 68, 0.05);
}

.pill-group input[type="radio"],
.pill-group input[type="checkbox"] { display: none; }

.pill-group label {
  min-height: var(--input-height);
  padding: 0 1.2rem;
  border: 1px solid var(--border-light);
  border-radius: 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-body);
  cursor: pointer;
  transition: all var(--ease);
  background: var(--bg-input);
  text-transform: none;
  letter-spacing: 0;
  display: flex;
  align-items: center;
  margin-bottom: 0;
}

.pill-group input[type="radio"]:checked + label,
.pill-group input[type="checkbox"]:checked + label {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 2px 8px rgba(14,127,171,0.3);
  font-weight: 600;
}

/* ════════════════════════════════════════════════════════════
   13. EQUIPMENT CHECKBOX LIST
════════════════════════════════════════════════════════════ */
.equipment-list { display: flex; flex-direction: column; gap: 0.6rem; }

.equipment-item { display: flex; align-items: center; gap: 0.75rem; }

.equipment-item input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}

.equipment-item label {
  min-height: var(--input-height);
  padding: 0 1.1rem;
  border: 1px solid var(--border-light);
  border-radius: var(--input-radius);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-body);
  background: var(--bg-input);
  transition: all var(--ease);
  text-transform: none;
  letter-spacing: 0;
  flex: 1;
  display: flex;
  align-items: center;
  margin-bottom: 0;
}

.equipment-item input[type="checkbox"]:checked + label {
  border-color: var(--accent);
  color: var(--primary-dark);
  background: rgba(0,196,167,0.06);
  font-weight: 600;
}

/* ════════════════════════════════════════════════════════════
   14. CONDITIONAL "OTHER" FIELD
════════════════════════════════════════════════════════════ */
.other-input-wrapper         { display: none; padding-left: 1rem; margin-top: 0.5rem; }
.other-input-wrapper.visible { display: block; }

/* ════════════════════════════════════════════════════════════
   15. SUBMIT ZONE & PREMIUM BUTTON
════════════════════════════════════════════════════════════ */
.submit-zone {
  position: sticky;
  bottom: 0px;
  z-index: 80;
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: #ffffff;
  border-radius: 20px 20px 0 0;
  box-shadow: 0 -10px 40px rgba(0,0,0,0.08);
  border-top: 1px solid rgba(226,232,240,0.8);
  text-align: center;
}

.submit-zone p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.5;
}

/* Full-width submit button */
.btn-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  width: 100%;
  min-height: 52px;
  padding: 0 2rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  color: #fff;
  border: none;
  border-radius: var(--input-radius);
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.3px;
  box-shadow: 0 4px 14px rgba(14,127,171,0.3);
  transition: transform var(--ease), box-shadow var(--ease), opacity var(--ease);
  position: relative;
  overflow: hidden;
}

.btn-submit:hover  { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(14,127,171,0.4); }
.btn-submit:active { transform: translateY(0); }
.btn-submit.loading { pointer-events: none; opacity: 0.85; filter: grayscale(50%); }

.btn-submit span, .btn-submit svg, .btn-submit .spinner { position: relative; z-index: 1; display:flex; align-items:center; justify-content:center; }
.btn-submit.loading .btn-icon { display: none; }
.btn-submit.loading .spinner { display: block; border: 3px solid rgba(255,255,255,0.3); border-top-color: #fff; border-radius: 50%; width: 20px; height: 20px; animation: spin 1s linear infinite; margin-right: 8px; }
.spinner.disable-anim { display: none; }

@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

/* ════════════════════════════════════════════════════════════
   16. CSS PROGRESS BAR (Sticky)
════════════════════════════════════════════════════════════ */
.global-progress-container {
  width: 100%;
  height: 6px;
  background-color: var(--border-light);
  border-radius: 4px;
  margin-bottom: 24px;
  overflow: hidden;
  position: sticky;
  top: 75px; /* Just below header */
  z-index: 80;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.global-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  width: 0%; /* Default 0 */
  transition: width 0.3s ease-out;
}

/* Canvas Styling */
.signature-wrapper { position: relative; width: 300px; margin: 0 auto; }
.signature-wrapper canvas { border: 1px dashed var(--border-light) !important; background-color: var(--bg-input) !important; }
.signature-placeholder { position: absolute; pointer-events: none; top: 50%; left: 50%; transform: translate(-50%, -50%); color: var(--text-muted); font-size: 1.2rem; font-family: 'Outfit', sans-serif; font-weight: 500; user-select: none; opacity: 0.5; }

/* File Upload & Secondary Buttons */
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: var(--bg-input);
  border: 1px solid var(--border-light);
  border-radius: var(--input-radius);
  color: var(--text-heading);
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--ease);
}

.btn-secondary:hover {
  background: #f1f5f9;
  border-color: var(--text-muted);
}

.file-upload-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

.file-preview {
  min-height: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.file-preview img {
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  max-height: 200px;
}

/* ════════════════════════════════════════════════════════════
   17. TOAST NOTIFICATION
════════════════════════════════════════════════════════════ */
#toast {
  position: fixed;
  bottom: 1.5rem;
  left: 1rem;
  right: 1rem;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1.2rem;
  border-radius: var(--card-radius);
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
  font-size: 0.9rem;
  font-weight: 500;
  transform: translateY(120%);
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1);
  max-width: 500px;
  margin: 0 auto;
}

#toast.show    { transform: translateY(0); }
#toast.success { background: linear-gradient(135deg, #059669, #10b981); color: #fff; }
#toast.error   { background: linear-gradient(135deg, #dc2626, #ef4444); color: #fff; }
.toast-icon    { font-size: 1.2rem; flex-shrink: 0; }

/* ════════════════════════════════════════════════════════════
   17. RESPONSIVE — TABLET / DESKTOP (min-width: 768px)
   2-column grid layout enabled here
════════════════════════════════════════════════════════════ */
@media (min-width: 768px) {

  /* Header */
  .app-header      { padding: 1.1rem 2rem; }
  .logo-mark       { height: 52px; width: auto; max-width: 180px; }
  .header-text h1  { font-size: 1.5rem; }

  /* Tab nav */
  .tab-nav         { top: 80px; }
  .tab-btn         { min-width: 200px; font-size: 0.9rem; }

  /* Layout */
  .main-content    { padding: 2rem 1.5rem 4rem; }
  .section-body    { padding: 1.75rem; }
  .section-header  { padding: 1.1rem 1.75rem; }

  /* Grid: 2 columns on tablet */
  .field-grid        { grid-template-columns: repeat(2, 1fr); }
  .field-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .field-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
  .field-grid.full   { grid-template-columns: 1fr; }

  /* Restore spans */
  .field-group.span-2    { grid-column: span 2; }
  .field-group.span-full { grid-column: 1 / -1; }

  /* Submit button & zone: inline on tablet/desktop */
  .submit-zone {
    position: static;
    margin-top: 2rem;
    border-radius: var(--card-radius);
    background: var(--bg-card);
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(226,232,240,0.8);
  }
  .btn-submit { max-width: 400px; margin: 0 auto; }

  /* Toast */
  #toast { left: auto; right: 1.5rem; bottom: 1.5rem; width: 340px; max-width: 340px; border-radius: 12px; }
}

/* ════════════════════════════════════════════════════════════
   18. RESPONSIVE — LARGE DESKTOP (min-width: 1024px)
   3-column grid layout
════════════════════════════════════════════════════════════ */
@media (min-width: 1024px) {

  /* Grid: 3 columns on desktop */
  .field-grid        { grid-template-columns: repeat(3, 1fr); }
  .field-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
  .field-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

  /* Section body more space */
  .section-body    { padding: 2rem; }
  .section-header  { padding: 1.25rem 2rem; }
}