/* Root tokens */
:root{
  --sum-bg:#ffffff;
  --sum-fg:#1e293b;
  --sum-muted:#64748b;
  --sum-border:#e2e8f0;
  --sum-ink:#0f172a;
  --sum-accent:#f97316;
  --sum-accent-dark:#ea580c;
  --sum-success:#10b981;
  --sum-radius:16px;
  --sum-radius-sm:12px;
  --sum-shadow:0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --sum-shadow-lg:0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --sum-focus:0 0 0 3px rgba(249,115,22,.2);
  --sum-max:1000px;
  --gap:16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e9f2 100%);
  min-height: 100vh;
  padding: 20px 0;
}

/* Card & header */
.sum-card{
  background:var(--sum-bg);
  color:var(--sum-fg);
  border-radius:var(--sum-radius);
  box-shadow:var(--sum-shadow-lg);
  margin:20px auto;
  padding:40px;
  max-width:var(--sum-max);
  border: 1px solid rgba(0,0,0,0.05);
  animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.sum-header{
  background: linear-gradient(135deg, var(--sum-accent) 0%, var(--sum-accent-dark) 100%);
  padding: 24px 28px;
  margin: -40px -40px 32px -40px;
  border-radius: var(--sum-radius) var(--sum-radius) 0 0;
  color: white;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.2);
}

.sum-title{
  font-weight: 800;
  font-size: 28px;
  letter-spacing: 0.5px;
  margin: 0;
  text-transform: uppercase;
  color: white;
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.sum-subtitle{
  font-size: 14px;
  color: rgba(255,255,255,0.9);
  margin-top: 6px;
  font-weight: 500;
}

.sum-section{
  margin-top: 32px;
  padding: 24px;
  background: #f8fafc;
  border-radius: var(--sum-radius-sm);
  border-left: 4px solid var(--sum-accent);
  transition: all 0.3s ease;
}

.sum-section:hover {
  background: #f1f5f9;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.sum-h{
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin: 0 0 20px;
  text-transform: uppercase;
  color: var(--sum-ink);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sum-h::before {
  content: '';
  width: 4px;
  height: 24px;
  background: linear-gradient(135deg, var(--sum-accent), var(--sum-accent-dark));
  border-radius: 2px;
}

/* Grid: mobile-first */
.sum-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:var(--gap);
}
@media (min-width:640px){
  .sum-grid{ grid-template-columns:repeat(2,1fr); }
}
@media (min-width:960px){
  .sum-grid{ grid-template-columns:repeat(3,1fr); }
}
.sum-col-12{ grid-column:1/-1; }

.sum-field {
  position: relative;
}

.sum-field label{
  display: block;
  font-weight: 600;
  margin: 0 0 8px;
  color: var(--sum-fg);
  font-size: 14px;
  letter-spacing: 0.3px;
}

.sum-input{
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--sum-border);
  border-radius: var(--sum-radius-sm);
  background: #fff;
  color: var(--sum-fg);
  font-size: 15px;
  transition: all 0.2s ease;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.sum-input:hover {
  border-color: #cbd5e1;
}

.sum-input:focus{
  outline: none;
  border-color: var(--sum-accent);
  box-shadow: var(--sum-focus), 0 2px 8px rgba(0,0,0,0.08);
  transform: translateY(-1px);
}

.sum-input[readonly] {
  background: #f1f5f9;
  cursor: not-allowed;
  opacity: 0.7;
}

.req{
  color: #ef4444;
  font-weight: 700;
  margin-left: 2px;
}

/* File input helper */
.sum-file {
  position: relative;
  cursor: pointer;
}

.sum-file-hint{
  display: block;
  font-size: 13px;
  color: var(--sum-muted);
  margin-top: 8px;
  padding: 8px 12px;
  background: #f8fafc;
  border-radius: 8px;
  border: 1px dashed var(--sum-border);
  text-align: center;
  transition: all 0.2s ease;
}

.sum-file:hover + .sum-file-hint {
  background: #f1f5f9;
  border-color: var(--sum-accent);
  color: var(--sum-accent);
}

/* Toggles */
.sum-toggle{
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
  padding: 16px;
  background: white;
  border-radius: var(--sum-radius-sm);
  border: 2px solid var(--sum-border);
  cursor: pointer;
  transition: all 0.2s ease;
}

.sum-toggle:hover {
  border-color: var(--sum-accent);
  background: #fffbf5;
}

.sum-toggle label {
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  color: var(--sum-fg);
  flex: 1;
}

.sum-switch{
  width: 52px;
  height: 28px;
  appearance: none;
  background: #e2e8f0;
  border-radius: 999px;
  position: relative;
  outline: none;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.sum-switch::after{
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
  transition: all 0.3s ease;
}

.sum-switch:checked{
  background: var(--sum-accent);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.15);
}

.sum-switch:checked::after{
  left: 26px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

.sum-hidden{ display:none; }

/* Price box */
.sum-price{
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  border: 2px solid var(--sum-accent);
  border-radius: var(--sum-radius-sm);
  padding: 20px 24px;
  margin-top: 16px;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.1);
}

.sum-price .row{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  font-size: 15px;
}

.sum-price .row:last-child {
  border-bottom: none;
  padding-top: 16px;
  margin-top: 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--sum-accent);
}

.sum-price .row strong {
  color: var(--sum-ink);
}

.sum-price .row span {
  font-weight: 600;
  color: var(--sum-fg);
}

/* Acceptance */
.sum-check{
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin: 20px 0;
  padding: 20px;
  background: white;
  border-radius: var(--sum-radius-sm);
  border: 2px solid var(--sum-border);
  transition: all 0.2s ease;
  cursor: pointer;
}

.sum-check:hover {
  border-color: var(--sum-accent);
  background: #fffbf5;
}

.sum-check input[type="checkbox"] {
  width: 22px;
  height: 22px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--sum-accent);
  flex-shrink: 0;
}

.sum-check label {
  flex: 1;
  font-size: 15px;
  line-height: 1.6;
  color: var(--sum-fg);
  cursor: pointer;
}

.sum-link{
  color: var(--sum-accent);
  text-decoration: underline;
  font-weight: 600;
  transition: color 0.2s ease;
}

.sum-link:hover {
  color: var(--sum-accent-dark);
}

.sum-help {
  font-size: 14px;
  color: var(--sum-muted);
  line-height: 1.6;
  margin-top: 12px;
  padding: 12px 16px;
  background: #f8fafc;
  border-radius: 8px;
  border-left: 3px solid #94a3b8;
}

/* Actions */
.sum-actions{
  display: flex;
  justify-content: center;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 2px solid var(--sum-border);
  position: sticky;
  bottom: 20px;
  background: white;
  padding: 20px;
  border-radius: var(--sum-radius-sm);
  box-shadow: 0 -4px 12px rgba(0,0,0,0.05);
}

.sum-btn{
  background: linear-gradient(135deg, var(--sum-accent) 0%, var(--sum-accent-dark) 100%);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 16px 48px;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sum-btn:hover{
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(249, 115, 22, 0.4);
}

.sum-btn:active{
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
}

/* Toast */
.sum-toast{
  max-width: var(--sum-max);
  margin: 20px auto;
  padding: 20px 24px;
  background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
  color: #065f46;
  border: 2px solid var(--sum-success);
  border-radius: var(--sum-radius);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
  font-weight: 600;
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: slideInDown 0.4s ease;
}

.sum-toast::before {
  content: '✓';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--sum-success);
  color: white;
  border-radius: 50%;
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
}

@keyframes slideInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Contact info sections */
.sum-contact-details {
  background: white;
  padding: 16px;
  border-radius: var(--sum-radius-sm);
  margin-top: 12px;
}

.sum-contact-details div {
  padding: 8px 0;
  border-bottom: 1px solid var(--sum-border);
}

.sum-contact-details div:last-child {
  border-bottom: none;
}

.sum-secondary-contact {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 2px solid var(--sum-border);
}

/* Responsive design */
@media (max-width:768px){
  .sum-card{
    padding: 24px;
    margin: 12px;
  }

  .sum-header{
    margin: -24px -24px 24px -24px;
    padding: 20px 24px;
  }

  .sum-title{
    font-size: 22px;
  }

  .sum-section{
    padding: 16px;
  }

  .sum-btn{
    width: 100%;
    padding: 14px 32px;
  }
}

@media (max-width:420px){
  .sum-title{
    font-size: 20px;
  }

  .sum-card{
    padding: 20px;
    margin: 8px;
  }

  .sum-header{
    margin: -20px -20px 20px -20px;
    padding: 16px 20px;
  }

  .sum-grid{
    gap: 12px;
  }

  .sum-section{
    padding: 12px;
  }

  .sum-h{
    font-size: 16px;
  }
}

/* Loading states */
.sum-input:disabled,
.sum-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.sum-btn:disabled:hover {
  transform: none;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

/* Focus visible for accessibility */
*:focus-visible {
  outline: 2px solid var(--sum-accent);
  outline-offset: 2px;
}

/* Print styles */
@media print {
  .sum-actions,
  .sum-btn {
    display: none;
  }

  .sum-card {
    box-shadow: none;
    border: 1px solid #ddd;
  }

  body {
    background: white;
  }
}