/* ========================================== */
/* ZELL UNIFIED DESIGN SYSTEM                */
/* Version 2.0 - February 2026               */
/* ========================================== */

/* === Design Tokens (CSS Variables) === */
:root {
  /* Colors - Base Palette */
  --bg-gradient-start: #f8f9fa;
  --bg-gradient-end: #ffffff;
  --primary: #1d4ed8;
  --primary-soft: rgba(29, 78, 216, 0.10);
  --accent: #0ea5e9;
  --success: #16a34a;
  --success-bg: #f0fdf4;
  --danger: #b91c1c;
  --danger-bg: #fef2f2;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --info: #0ea5e9;
  --info-bg: #f0f9ff;
  
  /* Text Colors */
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  
  /* Background & Surface */
  --card-bg: rgba(255, 255, 255, 0.95);
  --glass-border: rgba(255, 255, 255, 0.8);
  --border-color: #cbd5e1;
  --overlay-bg: rgba(15, 23, 42, 0.55);
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 24px;
  --spacing-2xl: 32px;
  
  /* Border Radius */
  --radius-xs: 6px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-pill: 999px;
  
  /* Shadows */
  --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 20px rgba(15, 23, 42, 0.12);
  --shadow-lg: 0 24px 80px rgba(15, 23, 42, 0.25);
  
  /* Gradients */
  --aurora: linear-gradient(120deg, #4f46e5, #0ea5e9, #22c55e, #f97316);
  --btn-gradient: linear-gradient(135deg, var(--primary), var(--accent));
  --bg-radial: radial-gradient(circle at 10% 10%, rgba(29,78,216,0.06), transparent 45%),
                radial-gradient(circle at 80% 30%, rgba(14,165,233,0.06), transparent 50%),
                #ffffff;
  
  /* Typography */
  --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 13px;
  --font-size-base: 14px;
  --font-size-md: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  
  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 999999;
  --z-modal: 1000000;
  --z-popover: 1000001;
  --z-tooltip: 1000002;
}

/* === Base Styles === */
* {
  box-sizing: border-box;
}

/* === BUTTONS === */

/* Primary Button */
.zell-btn-primary {
  position: relative;
  background-image: var(--btn-gradient);
  border-radius: var(--radius-pill);
  color: #fff;
  border: 1px solid transparent;
  padding: 12px 24px;
  font-size: var(--font-size-md);
  font-weight: 600;
  letter-spacing: 0.01em;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.22);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  white-space: nowrap;
  font-family: var(--font-family);
  min-height: 44px;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  text-decoration: none;
}

.zell-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 25px rgba(37, 99, 235, 0.35);
}

.zell-btn-primary:active {
  transform: translateY(0);
}

.zell-btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.12);
}

/* Button Sizes */
.zell-btn-large {
  padding: 14px 32px;
  font-size: 18px;
  min-height: 52px;
}

.zell-btn-small {
  padding: 8px 16px;
  font-size: 13px;
  min-height: 36px;
}

/* Ghost Button (Secondary) */
.zell-btn-ghost {
  appearance: none;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-color);
  background: #fff;
  color: var(--text-main);
  padding: 12px 24px;
  font-size: var(--font-size-md);
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
  cursor: pointer;
  font-family: var(--font-family);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: var(--shadow-sm);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  text-decoration: none;
}

.zell-btn-ghost:hover {
  background: #f8fafc;
  border-color: var(--primary);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(15, 23, 42, 0.1);
}

.zell-btn-ghost:active {
  transform: translateY(0);
}

.zell-btn-ghost:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Danger Button */
.zell-btn-danger {
  background: var(--danger);
  background-image: none;
  color: white;
  border: none;
  box-shadow: 0 8px 20px rgba(185, 28, 28, 0.22);
}

.zell-btn-danger:hover {
  background: #991b1b;
  box-shadow: 0 12px 25px rgba(185, 28, 28, 0.35);
}

/* Button Group */
.zell-btn-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* === FORM INPUTS === */

.zell-form-group {
  margin-bottom: 16px;
}

.zell-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: 6px;
  color: #334155;
}

.zell-input {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  background: #fff;
  transition: all 0.2s ease;
  font-family: var(--font-family);
  color: var(--text-main);
}

.zell-input:focus {
  border-color: var(--primary);
  outline: 4px solid var(--primary-soft);
}

.zell-input:disabled {
  background: #f1f5f9;
  cursor: not-allowed;
  opacity: 0.6;
}

.zell-input::placeholder {
  color: var(--text-light);
}

/* Textarea */
.zell-textarea {
  min-height: 100px;
  resize: vertical;
}

/* Select */
.zell-select {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  background: #fff;
  font-family: var(--font-family);
  color: var(--text-main);
  cursor: pointer;
}

.zell-select:focus {
  border-color: var(--primary);
  outline: 4px solid var(--primary-soft);
}

/* Helper Text */
.zell-helper-text {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: 6px;
}

/* Error State */
.zell-input.error,
.zell-select.error {
  border-color: var(--danger);
}

.zell-error-text {
  font-size: var(--font-size-xs);
  color: var(--danger);
  margin-top: 6px;
}

/* === CHIPS (Selectable Tags) === */

.zell-chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.zell-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-color);
  background: #fff;
  font-size: var(--font-size-sm);
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
  font-weight: 500;
}

.zell-chip:hover {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.zell-chip.selected {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
  font-weight: 600;
}

.zell-chip:active {
  transform: scale(0.96);
}

/* === STEPPER (Progress Pills) === */

.zell-stepper {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.zell-step-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid #d1d5db;
  background: #f8fafc;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  transition: all 0.2s ease;
  white-space: nowrap;
  font-weight: 500;
}

.zell-step-pill.current {
  background: var(--primary-soft);
  border-color: var(--primary);
  color: #1e293b;
  font-weight: 700;
}

.zell-step-pill.completed {
  background: var(--success-bg);
  border-color: var(--success);
  color: var(--success);
  font-weight: 700;
}

/* === CARDS & PANELS === */

.zell-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  margin-bottom: 24px;
  transition: all 0.3s ease;
}

.zell-card-header {
  margin-bottom: 16px;
}

.zell-card-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.zell-card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin: 4px 0 0 0;
}

/* Panel (smaller card variant) */
.zell-panel {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 14px;
  padding: 16px;
}

.zell-panel h4 {
  margin: 0 0 8px 0;
  font-size: var(--font-size-sm);
  font-weight: 800;
  letter-spacing: 0.2px;
  color: #1e293b;
}

/* Key-Value Display */
.zell-kv {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid #f1f5f9;
  font-size: var(--font-size-sm);
}

.zell-kv:last-child {
  border-bottom: none;
}

.zell-kv-key {
  color: #475569;
}

.zell-kv-value {
  font-weight: 700;
  color: var(--text-main);
  text-align: right;
}

/* === NOTICES/ALERTS === */

.zell-notice {
  border-radius: var(--radius-md);
  padding: 14px 16px;
  border: 1px solid var(--border-color);
  background: #fff;
  font-size: var(--font-size-sm);
  color: #334155;
  line-height: 1.5;
  margin-bottom: 16px;
}

.zell-notice-success {
  border-color: rgba(22, 163, 74, 0.55);
  background: var(--success-bg);
  color: #14532d;
}

.zell-notice-danger {
  border-color: rgba(185, 28, 28, 0.50);
  background: var(--danger-bg);
  color: #7f1d1d;
}

.zell-notice-warning {
  border-color: rgba(245, 158, 11, 0.55);
  background: var(--warning-bg);
  color: #7c2d12;
}

.zell-notice-info {
  border-color: rgba(14, 165, 233, 0.55);
  background: var(--info-bg);
  color: #075985;
}

/* === MODAL === */

.zell-modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: var(--z-modal-backdrop);
  backdrop-filter: blur(4px);
}

.zell-modal-overlay.show {
  display: flex !important;
}

.zell-modal-overlay.active {
  display: flex !important;
}

/* Aurora Frame (animated border) */
.zell-aurora-frame {
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius-lg);
  padding: 2px;
  background: var(--aurora);
  background-size: 200% 200%;
  animation: auroraMove 5s infinite ease-in-out;
  box-shadow: var(--shadow-lg);
}

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

/* Modal content (nested inside modal-overlay) */
.zell-modal-overlay .zell-modal {
  width: 100%;
  background: #fff;
  border-radius: calc(var(--radius-lg) - 2px);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  max-height: 90vh;
  overflow: hidden;
  z-index: var(--z-modal);
}

.zell-modal-header {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid #f0f0f1;
  background: rgba(255, 255, 255, 0.98);
}

.zell-modal-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-main);
}

.zell-modal-subtitle {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-top: 2px;
}

.zell-modal-close {
  width: 38px;
  height: 38px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid #e2e8f0;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  color: #475569;
  font-size: 0;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 0;
}

.zell-modal-close::before {
  content: "×";
  font-size: 24px;
  line-height: 1;
  transform: translateY(-1px);
}

.zell-modal-close:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

.zell-modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
  background: var(--bg-radial);
}

.zell-modal-footer {
  padding: 16px 24px;
  border-top: 1px solid #f0f0f1;
  background: #f8fafc;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

/* === FORM ACTIONS (Modal Buttons) === */

.zell-form-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.zell-btn-primary,
.zell-btn-ghost {
  padding: 12px 24px !important;
  border-radius: 999px !important;
  font-size: 16px !important;
  font-weight: 600 !important;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
  min-width: 140px;
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.22) !important;
}

.zell-btn-primary {
  background-color: #667eea !important;
  color: white !important;
  border: 1px solid transparent !important;
}

.zell-btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 12px 25px rgba(102, 126, 234, 0.35) !important;
}

.zell-btn-primary:active {
  transform: translateY(0);
}

.zell-btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.12) !important;
}

.zell-btn-ghost {
  background: #fff !important;
  color: #0f172a !important;
  border: 1px solid #cbd5e1 !important;
}

.zell-btn-ghost:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 25px rgba(102, 126, 234, 0.15) !important;
}

/* Button Loading State */
.btn-loading {
  display: none;
}

.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* === TWO-COLUMN LAYOUT === */

.zell-cols {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 768px) {
  .zell-cols {
    grid-template-columns: 1fr;
  }
}

/* === UTILITY CLASSES === */

.zell-text-muted {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

.zell-text-center {
  text-align: center;
}

.zell-mb-0 { margin-bottom: 0; }
.zell-mb-1 { margin-bottom: 8px; }
.zell-mb-2 { margin-bottom: 16px; }
.zell-mb-3 { margin-bottom: 24px; }
.zell-mb-4 { margin-bottom: 32px; }

.zell-mt-0 { margin-top: 0; }
.zell-mt-1 { margin-top: 8px; }
.zell-mt-2 { margin-top: 16px; }
.zell-mt-3 { margin-top: 24px; }
.zell-mt-4 { margin-top: 32px; }

.zell-hidden {
  display: none !important;
}

.zell-flex {
  display: flex;
}

.zell-flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.zell-gap-1 { gap: 8px; }
.zell-gap-2 { gap: 16px; }
.zell-gap-3 { gap: 24px; }

/* Loading Spinner */
.zell-spinner {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Code Badge */
.zell-code {
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-xs);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid #e2e8f0;
  background: #f8fafc;
  color: #475569;
}

/* === CALCULATOR-SPECIFIC WRAPPERS === */

.zell-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 20px;
  background: linear-gradient(to bottom, var(--bg-gradient-start), var(--bg-gradient-end));
  min-height: 100vh;
  font-family: var(--font-family);
}

.zell-shell {
  width: 100%;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
  padding: 30px;
  position: relative;
  overflow: hidden;
}

.zell-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 12px 0;
}

/* === CALCULATOR BADGE === */
.zell-calc-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 100px;
  background: rgba(102, 126, 234, 0.08);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #102448;
  margin-bottom: 12px;
}

.zell-calc-badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10b981;
  animation: pulse-dot 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-dot {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  50% {
    opacity: 0.8;
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0);
  }
}

/* === CALCULATOR CARD (Shell) === */
.zell-calc-shell {
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-lg, 18px);
  border: 1px solid rgba(203, 213, 225, 0.5);
  box-shadow: var(--shadow-md, 0 8px 20px rgba(15, 23, 42, 0.12));
  padding: 24px;
  backdrop-filter: blur(16px);
}

/* Responsive padding for shell */
@media (max-width: 768px) {
  .zell-calc-shell {
    padding: 20px;
  }
}

@media (max-width: 640px) {
  .zell-calc-shell {
    padding: 16px;
  }
}

.zell-sub {
  font-size: var(--font-size-md);
  color: var(--text-muted);
  margin: 0 0 32px 0;
}

/* Field & Grid */
.zell-field {
  margin-bottom: 16px;
}

.zell-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}

@media (max-width: 768px) {
  .zell-grid-2 {
    grid-template-columns: 1fr;
  }
}

/* Actions */
.zell-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

/* Stats Display */
.zell-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.zell-stat {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
  color: white;
  box-shadow: var(--shadow-md);
}

.zell-stat .cap {
  font-size: var(--font-size-sm);
  opacity: 0.9;
  margin-bottom: 8px;
  font-weight: 500;
}

.zell-stat .val {
  font-size: 24px;
  font-weight: 700;
}

/* Breakdown */
.zell-breakdown {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 2px solid var(--border-color);
}

.zell-breakdown h3 {
  font-size: var(--font-size-lg);
  margin-bottom: 16px;
  color: var(--text-main);
  font-weight: 700;
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid #f1f5f9;
  font-size: var(--font-size-base);
}

.breakdown-row:last-child {
  border-bottom: none;
  font-weight: 700;
  font-size: var(--font-size-md);
  color: var(--primary);
  margin-top: 8px;
  padding-top: 16px;
  border-top: 2px solid var(--primary);
}

/* Info Box */
.info-box {
  background: var(--warning-bg);
  border-left: 4px solid var(--warning);
  padding: 16px;
  border-radius: var(--radius-md);
  margin-top: 24px;
  font-size: var(--font-size-sm);
  color: #7c2d12;
}

/* Login Prompt */
#login-prompt {
  display: none !important;
}

#login-prompt.show {
  display: block !important;
}

/* Results Display */
#cgt-results {
  display: none;
}

#cgt-results.show {
  display: block;
}

/* === COMPREHENSIVE MOBILE RESPONSIVE RULES === */

/* Field Row Layouts - Responsive Grid */
.field-row-dual {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.field-row-triple {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}

/* Tablet breakpoint */
@media (max-width: 900px) {
  .field-row-triple {
    grid-template-columns: 1fr;
  }
}

/* Tablet/Mobile breakpoint */
@media (max-width: 768px) {
  .field-row-dual {
    grid-template-columns: 1fr;
  }
  
  /* Header text size adjustments */
  .zell-calc-header h1 {
    font-size: 24px;
  }
  
  .zell-calc-header p {
    font-size: 13px;
  }
}

/* Mobile breakpoint */
@media (max-width: 640px) {
  /* Stepper adjustments */
  .zell-stepper {
    gap: 12px;
  }
  
  .zell-step-pill {
    padding: 6px 12px;
    font-size: 12px;
  }
  
  .zell-step-pill .step-number {
    width: 20px;
    height: 20px;
    font-size: 11px;
  }
  
  /* Navigation buttons - stack vertically */
  .nav-buttons {
    flex-direction: column;
    align-items: stretch;
  }
  
  .button-group-right {
    display: flex;
    gap: 8px;
    width: 100%;
  }
  
  .button-group-right button,
  .nav-buttons > button {
    flex: 1;
    width: 100%;
  }
  
  /* Stats grid - single column */
  .zell-stats {
    grid-template-columns: 1fr;
  }
  
  .zell-stat .val {
    font-size: 20px;
  }
  
  /* Result cards - single column */
  .zell-cards {
    grid-template-columns: 1fr !important;
  }
  
  /* Header adjustments */
  .zell-calc-header h1 {
    font-size: 20px;
  }
  
  .zell-calc-header p {
    font-size: 12px;
  }
}