/* ==========================================
   UTILITY BILL CALCULATOR - MODERN UI 
   Version: 2.0
   ========================================== */

/* ========== CSS VARIABLES ========== */
:root {
  /* Modern Color Palette */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #2E5BFF 0%, #4A90E2 100%);
  --success-gradient: linear-gradient(135deg, #00D084 0%, #27AE60 100%);
  --warning-gradient: linear-gradient(135deg, #FF6B35 0%, #F39C12 100%);
  --error-gradient: linear-gradient(135deg, #FF165D 0%, #E74C3C 100%);
  
  /* Base Colors */
  --primary-color: #2E5BFF;
  --secondary-color: #4A90E2;
  --success-color: #00D084;
  --warning-color: #FF6B35;
  --error-color: #FF165D;
  
  /* Background */
  --bg-primary: #F8F9FA;
  --bg-secondary: #FFFFFF;
  --bg-tertiary: #E9ECEF;
  
  /* Text */
  --text-primary: #2D3748;
  --text-secondary: #718096;
  --text-light: #A0AEC0;
  
  /* Borders */
  --border-color: #E2E8F0;
  --border-radius: 12px;
  --border-radius-lg: 16px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.18);
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  
  /* Typography */
  --font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Dark Mode Variables */
body.dark-mode {
  --bg-primary: #1A1D29;
  --bg-secondary: #252A3E;
  --bg-tertiary: #2D3447;
  --text-primary: #E2E8F0;
  --text-secondary: #A0AEC0;
  --text-light: #718096;
  --border-color: #3D4459;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
}

/* ========== GLOBAL STYLES ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {  
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  transition: background var(--transition-base), color var(--transition-base);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Lao Font */
body.font-lao {
  font-family: 'Noto Sans Lao', sans-serif;
}

body.font-lao .header-left h1,
body.font-lao .card-header h2,
body.font-lao button,
body.font-lao input,
body.font-lao .lang-btn {
  font-family: 'Noto Sans Lao', sans-serif;
}

/* ========== HEADER ========== */
.app-header {
  background: var(--primary-gradient);
  color: white;
  padding: var(--spacing-lg) 0;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex: 1;
  min-width: 0;
}

.logo {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
  backdrop-filter: blur(10px);
}

.app-header h1 {
  font-size: clamp(18px, 4vw, var(--font-size-xl));
  font-weight: 700;
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-shrink: 0;
}

/* ========== LANGUAGE SELECTOR ========== */
.language-selector {
  display: flex;
  gap: var(--spacing-xs);
  background: rgba(255, 255, 255, 0.15);
  padding: var(--spacing-xs);
  border-radius: var(--border-radius);
  backdrop-filter: blur(10px);
}

.language-selector button {
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  border-radius: 8px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.language-selector button:hover {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

.language-selector button.active {
  background: white;
  color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

/* ========== HELP BUTTON ========== */
.btn-help {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.15);
  color: white;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.btn-help:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.1);
}

/* ========== DARK MODE TOGGLE ========== */
.dark-mode-toggle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.15);
  color: white;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

.dark-mode-toggle:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.1);
}

body.dark-mode .dark-mode-toggle {
  background: rgba(255, 255, 255, 0.1);
}

/* ========== MAIN CONTAINER ========== */
.main-container {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  flex: 1;
}

/* ========== CARDS ========== */
.card {
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
  animation: fadeInUp 0.5s ease-out;
}

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

.card-header {
  padding: var(--spacing-lg);
  background: linear-gradient(to right, rgba(46, 91, 255, 0.05), transparent);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.card-header.clickable {
  cursor: pointer;
  justify-content: space-between;
  transition: background var(--transition-base);
}

.card-header.clickable:hover {
  background: linear-gradient(to right, rgba(46, 91, 255, 0.08), transparent);
}

.card-header > div {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.card-icon {
  font-size: 24px;
  color: var(--primary-color);
  flex-shrink: 0;
}

.card-header h2 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.toggle-icon {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  transition: transform var(--transition-base);
}

.toggle-icon.rotated {
  transform: rotate(180deg);
}

.card-body {
  padding: var(--spacing-lg);
}

/* ========== COLUMNS ========== */
.left-column,
.right-column {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* ========== INPUTS ========== */
.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon {
  position: absolute;
  left: var(--spacing-md);
  color: var(--text-secondary);
  font-size: var(--font-size-base);
  pointer-events: none;
  z-index: 1;
}

input[type="text"],
input[type="number"] {
  width: 100%;
  padding: var(--spacing-md);
  padding-left: calc(var(--spacing-md) * 3);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-family: var(--font-family);
  color: var(--text-primary);
  background: var(--bg-secondary);
  transition: all var(--transition-base);
}

#totalCost {
  font-size: var(--font-size-xl);
  font-weight: 600;
  padding: var(--spacing-lg);
  padding-left: calc(var(--spacing-md) * 3.5);
}

input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(46, 91, 255, 0.1);
}

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

/* ========== PERSON LIST ========== */
#personList {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.person-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: linear-gradient(135deg, rgba(46, 91, 255, 0.03) 0%, rgba(102, 126, 234, 0.03) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: all var(--transition-base);
  animation: slideInLeft 0.3s ease-out;
}

.person-item:hover {
  background: linear-gradient(135deg, rgba(46, 91, 255, 0.05) 0%, rgba(102, 126, 234, 0.05) 100%);
  box-shadow: var(--shadow-sm);
}

.person-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--secondary-gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.person-inputs {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 120px;
  gap: var(--spacing-sm);
  min-width: 0;
}

.person-item input {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.days-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.days-label {
  position: absolute;
  right: var(--spacing-md);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  pointer-events: none;
}

.person-days {
  padding-right: calc(var(--spacing-md) * 3) !important;
}

.remove-person {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: var(--error-gradient);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  transition: all var(--transition-base);
  flex-shrink: 0;
}

.remove-person:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
}

/* ========== BUTTONS ========== */
button {
  font-family: var(--font-family);
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn {
  padding: var(--spacing-md) var(--spacing-xl);
  border: none;
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  transition: all var(--transition-base);
  min-height: 48px;
}

.btn-primary {
  background: var(--secondary-gradient);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--primary-color);
  background: rgba(46, 91, 255, 0.05);
  color: var(--primary-color);
}

.btn-add-person {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px dashed var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  transition: all var(--transition-base);
}

.btn-add-person:hover {
  border-color: var(--primary-color);
  background: rgba(46, 91, 255, 0.05);
  color: var(--primary-color);
  border-style: solid;
}

/* ========== ACTION BUTTONS ========== */
.action-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

#calculate {
  width: 100%;
  font-size: var(--font-size-lg);
  padding: var(--spacing-lg);
  min-height: 56px;
}

.btn-group-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

/* ========== RESULTS ========== */
#results {
  min-height: 200px;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-2xl);
  color: var(--text-light);
  text-align: center;
}

.empty-state i {
  font-size: 48px;
  opacity: 0.3;
}

.result-item {
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, rgba(0, 208, 132, 0.05) 0%, rgba(39, 174, 96, 0.05) 100%);
  border-left: 4px solid var(--success-color);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
  animation: slideInRight 0.3s ease-out;
}

.result-item:last-child {
  margin-bottom: 0;
}

.result-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.result-name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.result-name i {
  color: var(--success-color);
}

.result-amount {
  font-size: var(--font-size-xl);
  font-weight: 700;
  background: var(--success-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-details {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.result-bar {
  width: 100%;
  height: 8px;
  background: rgba(0, 208, 132, 0.1);
  border-radius: 4px;
  overflow: hidden;
  margin-top: var(--spacing-sm);
}

.result-bar-fill {
  height: 100%;
  background: var(--success-gradient);
  border-radius: 4px;
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== HISTORY ========== */
.history-empty {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--text-light);
  font-style: italic;
}

.history-item {
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.03) 0%, rgba(118, 75, 162, 0.03) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
  transition: all var(--transition-base);
  animation: fadeIn 0.3s ease-out;
}

.history-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--primary-color);
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
}

.history-date {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.history-total {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--primary-color);
}

.history-delete {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background: var(--error-color);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.history-delete:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
}

.history-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.history-person {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(0, 0, 0, 0.02);
  border-radius: 8px;
  font-size: var(--font-size-sm);
}

body.dark-mode .history-person {
  background: rgba(255, 255, 255, 0.02);
}

.history-person span:first-child {
  font-weight: 500;
  color: var(--text-primary);
}

.history-person span:nth-child(2) {
  color: var(--text-secondary);
}

.history-person span:last-child {
  font-weight: 600;
  color: var(--primary-color);
}

/* ========== ERROR MESSAGES ========== */
.error-message {
  color: var(--error-color);
  font-size: var(--font-size-sm);
  display: block;
  margin-top: var(--spacing-sm);
  animation: shake 0.3s ease;
}

.input-error {
  border-color: var(--error-color) !important;
  box-shadow: 0 0 0 3px rgba(255, 22, 93, 0.1) !important;
}

/* ========== NOTIFICATIONS ========== */
.toast-container {
  position: fixed;
  top: 90px;
  right: var(--spacing-lg);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  pointer-events: none;
}

.notification {
  background: white;
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  min-width: 300px;
  animation: slideInRight 0.3s ease-out;
  pointer-events: all;
  border-left: 4px solid transparent;
}

.notification.success {
  border-left-color: var(--success-color);
}

.notification.error {
  border-left-color: var(--error-color);
}

.notification i {
  font-size: 24px;
  flex-shrink: 0;
}

.notification.success i {
  color: var(--success-color);
}

.notification.error i {
  color: var(--error-color);
}

.notification-message {
  flex: 1;
  color: var(--text-primary);
  font-weight: 500;
}

/* ========== FOOTER ========== */
.footer {
  text-align: center;
  padding: var(--spacing-xl);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  margin-top: auto;
}

.footer a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-base);
  font-size: 24px;
  margin-top: var(--spacing-sm);
  display: inline-block;
}

.footer a:hover {
  color: var(--secondary-color);
}

/* ========== MODAL ========== */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background-color: var(--bg-secondary);
  margin: 5% auto;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  width: 90%;
  max-width: 600px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  animation: scaleIn 0.3s ease;
}

.modal-large {
  max-width: 800px;
}

.close {
  color: var(--text-light);
  float: right;
  font-size: 32px;
  font-weight: bold;
  cursor: pointer;
  transition: color var(--transition-base);
}

.close:hover {
  color: var(--error-color);
}

/* Guide Content Styling */
.guide-content {
  margin-top: var(--spacing-lg);
}

.guide-step {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.guide-step:last-child {
  border-bottom: none;
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: bold;
  flex-shrink: 0;
}

.step-text h3 {
  margin: 0 0 var(--spacing-sm) 0;
  color: var(--text-primary);
  font-size: var(--font-size-lg);
}

.step-text p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Terms Content Styling */
.terms-content {
  margin-top: var(--spacing-lg);
}

.terms-content section {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.terms-content section:last-child {
  border-bottom: none;
}

.terms-content h3 {
  color: var(--primary-color);
  margin: 0 0 var(--spacing-md) 0;
  font-size: var(--font-size-lg);
}

.terms-content p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ========== ANIMATIONS ========== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

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

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

/* ========== RESPONSIVE DESIGN ========== */

/* Tablet */
@media (max-width: 1024px) {
  .main-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .header-content {
    flex-wrap: wrap;
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --font-size-sm: 13px;
    --font-size-base: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
  }
  
  .app-header {
    padding: var(--spacing-md) 0;
  }
  
  .header-content {
    padding: 0 var(--spacing-md);
  }
  
  .app-header h1 {
    font-size: var(--font-size-lg);
  }
  
  .logo {
    width: 40px;
    height: 40px;
    font-size: 20px;
  }
  
  .main-container {
    padding: var(--spacing-lg) var(--spacing-md);
  }
  
  .card-body {
    padding: var(--spacing-md);
  }
  
  .person-inputs {
    grid-template-columns: 1fr;
  }
  
  .btn-group-secondary {
    grid-template-columns: 1fr;
  }
  
  .notification {
    min-width: 250px;
  }
  
  .toast-container {
    right: var(--spacing-md);
    left: var(--spacing-md);
  }
}

/* Mobile Small */
@media (max-width: 480px) {
  .language-selector {
    flex-direction: column;
    gap: var(--spacing-xs);
  }
  
  .language-selector button {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

/* ========== PRINT STYLES ========== */
@media print {
  .app-header,
  .dark-mode-toggle,
  .footer,
  .action-buttons,
  .btn-add-person,
  .remove-person,
  .history-card {
    display: none !important;
  }
  
  .main-container {
    grid-template-columns: 1fr;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}