/* ── ROI Calculator Modal Styles ── */

.delta-calc-overlay {
  position: fixed;
  inset: 0;
  background: rgba(16, 24, 32, 0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
  padding: 20px;
}

.delta-calc-overlay.active {
  display: flex;
  opacity: 1;
}

.delta-calc-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 32px;
  max-width: 680px;
  width: 100%;
  color: var(--ink);
  position: relative;
  box-shadow: var(--shadow);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), max-width 0.3s ease;
  transform: scale(0.92);
  max-height: 90vh;
  overflow-y: auto;
  text-align: left;
  font-family: var(--font-body);
}

@media (min-width: 768px) {
  .delta-calc-card {
    padding: 40px;
  }
  .delta-calc-card.results-state {
    max-width: 900px;
  }
}

.delta-calc-overlay.active .delta-calc-card {
  transform: scale(1);
}

/* Close Button */
.delta-calc-close {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 2rem;
  line-height: 1;
  color: var(--ink-soft);
  cursor: pointer;
  background: none;
  border: none;
  outline: none;
  transition: color 0.2s, transform 0.2s;
  z-index: 10;
}
.delta-calc-close:hover {
  color: var(--brand);
  transform: scale(1.1);
}

/* Header */
.delta-calc-header {
  margin-bottom: 28px;
  padding-right: 40px;
}

.delta-calc-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: 6px;
  display: block;
}

.delta-calc-subtitle {
  font-size: 0.95rem;
  color: var(--ink-soft);
  display: block;
  line-height: 1.4;
}

/* Form Layout */
.delta-calc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 640px) {
  .delta-calc-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.delta-calc-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.delta-calc-label {
  font-size: 0.85rem;
  color: var(--ink-soft);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.delta-calc-info-icon {
  font-size: 0.8rem;
  color: var(--ink-soft);
  cursor: help;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  width: 14px;
  height: 14px;
  border: 1px solid var(--line);
  background: var(--paper-2);
}

/* Input Styles */
.delta-calc-input,
.delta-calc-select {
  width: 100%;
  padding: 12px 16px;
  background-color: var(--paper-2);
  border: 1.5px solid transparent;
  border-radius: 12px;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  outline: none;
  transition: border-color 0.2s, background-color 0.2s;
  box-sizing: border-box;
}

.delta-calc-input:focus,
.delta-calc-select:focus {
  border-color: var(--brand);
  background-color: var(--white);
}

.delta-calc-input::placeholder {
  color: var(--ink-soft);
  opacity: 0.6;
}

/* Input Prefix Wrapper */
.delta-calc-prefix-wrapper {
  position: relative;
  width: 100%;
}

.delta-calc-prefix {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.95rem;
  pointer-events: none;
}

.delta-calc-prefix-wrapper .delta-calc-input {
  padding-left: 32px;
}

/* Custom Select Dropdown */
.delta-calc-select {
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%235a6872'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 16px;
  padding-right: 40px;
}

.delta-calc-select option {
  background-color: var(--white);
  color: var(--ink);
}

/* Input Helpers and Warnings */
.delta-calc-helper {
  font-size: 0.76rem;
  color: var(--ink-soft);
  display: block;
}

.delta-calc-warning {
  font-size: 0.76rem;
  color: #dc2626; /* Deep warning red */
  background: rgba(220, 38, 38, 0.06);
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid rgba(220, 38, 38, 0.12);
  margin-top: 4px;
  display: none;
}

.delta-calc-warning-visible {
  display: block;
}

/* Error Alert Box */
.delta-calc-error-box {
  display: none;
  margin-top: 20px;
  padding: 14px 18px;
  background-color: rgba(220, 38, 38, 0.08);
  border: 1px solid rgba(220, 38, 38, 0.18);
  border-radius: 12px;
}

.delta-calc-error-text {
  color: #dc2626;
  font-size: 0.88rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
}

/* Submit Button */
.delta-calc-submit-btn {
  width: 100%;
  margin-top: 28px;
  padding: 16px 32px;
  color: var(--white);
  font-weight: 600;
  font-family: var(--font-body);
  font-size: 1rem;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  background: var(--brand);
  box-shadow: 0 10px 24px -8px rgba(255, 90, 31, 0.45);
  text-align: center;
  user-select: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.delta-calc-submit-btn:hover {
  background: var(--brand-deep);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -8px rgba(255, 90, 31, 0.55);
}

/* ── Results Panel ── */
.delta-calc-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 24px;
  padding: 10px 18px;
  background-color: var(--white);
  border: 1px solid var(--line);
  color: var(--ink-soft);
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.84rem;
  user-select: none;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s;
}

.delta-calc-back-btn:hover {
  background-color: var(--paper-2);
  border-color: var(--ink-soft);
  color: var(--ink);
}

/* Results Grid */
.delta-calc-results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

@media (min-width: 768px) {
  .delta-calc-results-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.delta-calc-result-card {
  background-color: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
}

.delta-calc-result-label {
  font-size: 0.82rem;
  color: var(--ink-soft);
  font-weight: 600;
  margin-bottom: 8px;
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.delta-calc-result-value {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 6px;
  display: block;
}

.delta-calc-result-badge {
  display: inline-block;
  padding: 4px 8px;
  background-color: var(--teal-soft);
  color: var(--teal);
  border-radius: 6px;
  font-size: 0.74rem;
  font-weight: 600;
}

.delta-calc-result-note {
  font-size: 0.74rem;
  color: var(--ink-soft);
  margin-top: 10px;
  display: block;
  line-height: 1.35;
}

/* Total Section */
.delta-calc-total-section {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 24px 0;
  margin-bottom: 28px;
  text-align: center;
}

.delta-calc-total-label {
  font-size: 0.95rem;
  color: var(--ink-soft);
  font-weight: 600;
  margin-bottom: 6px;
  display: block;
}

.delta-calc-total-value {
  font-family: var(--font-display);
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--teal);
  display: block;
  line-height: 1.1;
}

/* Visual Comparison Bars */
.delta-calc-comparison-box {
  background-color: var(--paper-2);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 28px;
}

.delta-calc-bar-group {
  margin-bottom: 18px;
}
.delta-calc-bar-group:last-child {
  margin-bottom: 0;
}

.delta-calc-bar-label {
  font-size: 0.78rem;
  font-weight: 700;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: block;
}

.delta-calc-bar-bg {
  position: relative;
  height: 52px;
  background-color: rgba(16, 24, 32, 0.06);
  border-radius: 999px;
  overflow: hidden;
}

.delta-calc-bar-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 20px;
  border-radius: 999px;
  box-sizing: border-box;
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.delta-calc-bar-fill-current {
  background: linear-gradient(to right, var(--ink-soft), var(--ink));
  color: var(--white);
  font-weight: 700;
}

.delta-calc-bar-fill-potential {
  background: linear-gradient(135deg, var(--brand), #ff8f5a);
  color: var(--white);
  font-weight: 700;
  background-size: 200% 100%;
  animation: delta-shimmer 3s linear infinite;
}

@keyframes delta-shimmer {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.delta-calc-bar-value {
  font-size: 0.95rem;
}

.delta-calc-bar-emoji {
  margin-left: auto;
  font-size: 1.15rem;
}

/* Opportunity Gap Alert */
.delta-calc-gap-card {
  margin-top: 18px;
  padding: 16px;
  background-color: var(--teal-soft);
  border: 1px solid rgba(14, 107, 99, 0.15);
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.delta-calc-gap-arrow {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--teal);
  animation: delta-bounce 1s infinite;
}

@keyframes delta-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.delta-calc-gap-label {
  font-size: 0.72rem;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
  display: block;
}

.delta-calc-gap-value {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--teal);
  display: block;
}

/* ROI Metrics Box */
.delta-calc-roi-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  text-align: center;
}

@media (min-width: 640px) {
  .delta-calc-roi-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.delta-calc-roi-metric {
  background-color: var(--paper-2);
  border-radius: 12px;
  border: 1px solid var(--line);
  padding: 14px;
}

.delta-calc-roi-label {
  font-size: 0.74rem;
  color: var(--ink-soft);
  font-weight: 600;
  margin-bottom: 4px;
  display: block;
}

.delta-calc-roi-value {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--teal);
  display: block;
}

/* Success Note */
.delta-calc-success-note {
  display: none;
  margin-top: 24px;
  text-align: center;
  padding: 14px;
  background-color: var(--teal-soft);
  border-radius: 12px;
  color: var(--teal);
  font-weight: 600;
  font-size: 0.95rem;
}