/* ─── InvestOK Calculator Styles ──────────────────────────────────────────── */

.calc-page-wrapper {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
  padding: var(--space-10) var(--space-6) var(--space-16);
}

/* ─── Calculator Card ─────────────────────────────────────────────────────── */
.calc-card-main {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-8);
}

.calc-card-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  padding: var(--space-8) var(--space-8) var(--space-6);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.calc-card-header::before {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 200px; height: 200px;
  background: rgba(5,150,105,0.12);
  border-radius: 50%;
}
.calc-card-header::after {
  content: '';
  position: absolute;
  bottom: -60px; right: 60px;
  width: 150px; height: 150px;
  background: rgba(255,255,255,0.04);
  border-radius: 50%;
}
.calc-icon-large {
  width: 56px; height: 56px;
  flex-shrink: 0;
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: center;
}
.calc-icon-large svg { width: 52px; height: 52px; }
.calc-header-text { flex: 1; position: relative; z-index: 1; }
.calc-card-title { color: white; font-size: var(--text-2xl); margin-bottom: var(--space-2); }
.calc-card-desc  { color: rgba(255,255,255,0.80); font-size: var(--text-sm); line-height: 1.6; }

.calc-card-body { padding: var(--space-8); }

/* ─── Form Elements ───────────────────────────────────────────────────────── */
.calc-form { display: flex; flex-direction: column; gap: var(--space-5); }

.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.form-label-hint {
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--color-text-muted);
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-size: var(--text-base);
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color var(--transition), box-shadow var(--transition);
  -webkit-appearance: none;
}
.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(5,150,105,0.12);
}
.form-input::-webkit-inner-spin-button { opacity: 0.4; }

.form-input-prefix, .form-input-suffix {
  position: relative;
}
.form-input-prefix .prefix-symbol,
.form-input-suffix .suffix-symbol {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  pointer-events: none;
}
.form-input-prefix .prefix-symbol { left: var(--space-3); }
.form-input-suffix .suffix-symbol  { right: var(--space-3); }
.form-input-prefix .form-input     { padding-left: 1.875rem; }
.form-input-suffix .form-input     { padding-right: var(--space-8); }

.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-size: var(--text-base);
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-surface);
  cursor: pointer;
  -webkit-appearance: none;
  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'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 40px;
  transition: border-color var(--transition);
}
.form-select:focus {
  outline: none;
  border-color: var(--color-accent);
}

/* Range slider */
.form-range-group { display: flex; flex-direction: column; gap: var(--space-2); }
.range-header { display: flex; justify-content: space-between; align-items: center; }
.range-value {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}
.form-range {
  width: 100%;
  -webkit-appearance: none;
  height: 6px;
  border-radius: 3px;
  background: linear-gradient(to right, var(--color-accent) 0%, var(--color-accent) var(--range-pct, 50%), var(--color-border) var(--range-pct, 50%), var(--color-border) 100%);
  cursor: pointer;
  outline: none;
}
.form-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px; height: 22px;
  border-radius: 50%;
  background: white;
  border: 3px solid var(--color-accent);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform var(--transition);
}
.form-range::-webkit-slider-thumb:hover { transform: scale(1.15); }
.range-labels { display: flex; justify-content: space-between; font-size: var(--text-xs); color: var(--color-text-muted); margin-top: 4px; }

/* Submit button */
.calc-submit {
  background: var(--color-accent);
  color: white;
  font-size: var(--text-base);
  font-weight: 700;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  width: 100%;
  transition: all var(--transition);
  letter-spacing: -0.01em;
  margin-top: var(--space-2);
}
.calc-submit:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(5,150,105,0.30);
}

/* ─── Results Panel ───────────────────────────────────────────────────────── */
.calc-results {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  margin-top: var(--space-6);
  display: none;
}
.calc-results.visible { display: block; animation: fadeSlideIn 0.35s ease; }

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.results-headline {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.results-primary {
  display: flex;
  align-items: flex-end;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}
.results-big-value {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  font-weight: 900;
  color: var(--color-accent);
  letter-spacing: -0.04em;
  line-height: 1;
}
.results-big-label { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: var(--space-2); }

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
.result-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
}
.result-item-label { font-size: var(--text-xs); color: var(--color-text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: var(--space-2); }
.result-item-value { font-size: var(--text-xl); font-weight: 800; color: var(--color-primary); letter-spacing: -0.02em; }
.result-item-value.positive { color: var(--color-accent); }
.result-item-value.negative { color: var(--color-danger); }

/* Chart area */
.results-chart-area {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-5);
  margin-bottom: var(--space-6);
}
.chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 120px;
}
.chart-bar {
  flex: 1;
  min-width: 8px;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(180deg, var(--color-accent) 0%, rgba(5,150,105,0.5) 100%);
  transition: opacity var(--transition);
}
.chart-bar:hover { opacity: 0.8; }

.results-comparison {
  background: var(--color-primary-50);
  border: 1px solid var(--color-primary-100);
  border-radius: var(--radius);
  padding: var(--space-4);
  margin-bottom: var(--space-6);
  font-size: var(--text-sm);
}
.comparison-label { font-weight: 600; color: var(--color-primary); margin-bottom: var(--space-2); }
.comparison-row { display: flex; justify-content: space-between; padding: var(--space-1) 0; color: var(--color-text-muted); }
.comparison-row.highlight { color: var(--color-text); font-weight: 600; }
.comparison-row .val-positive { color: var(--color-accent); font-weight: 700; }
.comparison-row .val-negative { color: var(--color-danger); }

.results-note {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
  padding: var(--space-3);
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-4);
}

/* ─── Calculator Tabs (for instrument comparison) ─────────────────────────── */
.calc-tabs {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: var(--space-6);
  overflow-x: auto;
  gap: 0;
}
.calc-tab {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  cursor: pointer;
  transition: all var(--transition);
}
.calc-tab.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}
.calc-tab:hover:not(.active) { color: var(--color-primary); }

/* ─── Other calc list ─────────────────────────────────────────────────────── */
.calc-others {
  margin-top: var(--space-10);
}
.calc-others h3 { margin-bottom: var(--space-5); font-size: var(--text-xl); }
.calc-others-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-3);
}
.calc-other-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  transition: all var(--transition);
}
.calc-other-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.calc-other-icon { width: 28px; height: 28px; flex-shrink: 0; display: flex; align-items: center; }
.calc-other-icon svg { width: 22px; height: 22px; }

@media (max-width: 640px) {
  .form-row { grid-template-columns: 1fr; }
  .results-grid { grid-template-columns: 1fr 1fr; }
  .calc-card-body { padding: var(--space-5); }
}