/* ============================================
   ATM — Main Styles (Pratham Branding)
   ============================================ */

/* Google Font Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* CSS Variables — ATM Brand Colors */
:root {
  /* Primary: ATM Yellow/Orange */
  --color-primary: #F5B642;
  --color-primary-dark: #E5A632;
  --color-primary-light: #FFF8E7;
  --color-primary-lighter: #FFFDF5;
  
  /* Secondary: Dark/Black */
  --color-secondary: #1A1A1A;
  --color-secondary-light: #333333;
  
  /* Accent colors */
  --color-accent: #4A90D9;
  --color-accent-light: #E8F2FC;
  
  /* Status colors */
  --color-success: #22C55E;
  --color-success-light: #DCFCE7;
  --color-warning: #F59E0B;
  --color-warning-light: #FEF3C7;
  --color-error: #EF4444;
  --color-error-light: #FEE2E2;
  
  /* Neutrals */
  --color-white: #FFFFFF;
  --color-bg: #F8FAFC;
  --color-bg-alt: #FFFFFF;
  --color-surface: #FFFFFF;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;
  --color-text: #0F172A;
  --color-text-secondary: #64748B;
  --color-text-muted: #94A3B8;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 10px 20px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Prevent horizontal scrolling */
  overflow-x: hidden;
  /* Smooth scrolling for anchor links */
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background: #1a1a2e;
  height: 100vh;
  height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 0;
  margin: 0;
  /* Prevent horizontal scrolling */
  overflow-x: hidden;
  overflow-y: hidden;
  /* Better text rendering */
  text-rendering: optimizeLegibility;
  -webkit-tap-highlight-color: transparent;
}

/* Mobile Frame Container */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  width: 100%;
  max-width: 100%;
  background: var(--color-bg);
  position: relative;
  box-shadow: 0 0 60px rgba(0, 0, 0, 0.3);
  overflow-x: hidden;
  overflow-y: hidden;
  margin: 0 auto;
  /* Prevent content overflow */
  contain: layout style;
}

/* Base responsive adjustments */
@media (min-width: 481px) {
  body {
    padding: 20px;
    align-items: center;
  }
  
  #app {
    max-width: 420px;
    height: calc(100vh - 40px);
    height: calc(100dvh - 40px);
    max-height: calc(100vh - 40px);
    max-height: calc(100dvh - 40px);
    border-radius: 24px;
    overflow: hidden;
  }
}

/* Header */
#app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: 60px;
  flex-shrink: 0;
}

.header-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text);
}

.header-btn:hover {
  background: var(--color-bg);
}

#btn-back {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-bg);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text);
}

#btn-back:hover {
  background: var(--color-border);
}

#btn-back svg {
  width: 20px;
  height: 20px;
}

.header-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary-dark);
  flex: 1;
  text-align: center;
}

.header-logo {
  height: 36px;
}

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: 60px;
  right: var(--space-md);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  min-width: 200px;
  z-index: 200;
  overflow: hidden;
  border: 1px solid var(--color-border);
  animation: slideDown 0.2s ease;
}

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

.dropdown-menu.hidden {
  display: none;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  cursor: pointer;
  transition: background var(--transition-fast);
  color: var(--color-text);
}

.menu-item:hover {
  background: var(--color-bg);
}

.menu-item svg {
  color: var(--color-text-secondary);
}

.menu-item-logout {
  color: var(--color-error) !important;
  border-top: 1px solid var(--color-border-light);
  margin-top: var(--space-xs);
  padding-top: var(--space-md);
}

.menu-item-logout svg {
  color: var(--color-error) !important;
}

.menu-item-logout:hover {
  background: var(--color-error-light) !important;
}

.menu-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-xs) 0;
}

/* Bottom Navigation */
.bottom-nav {
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: var(--space-sm) 0;
  padding-bottom: calc(var(--space-sm) + env(safe-area-inset-bottom));
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  flex-shrink: 0;
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--space-sm) var(--space-lg);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  border-radius: var(--radius-lg);
}

.nav-item:hover {
  color: var(--color-text-secondary);
}

.nav-item.active {
  color: var(--color-primary-dark);
}

.nav-item.active svg {
  stroke-width: 2.5;
}

.nav-item span {
  font-size: var(--font-size-xs);
  font-weight: 500;
}

/* Main Content - adjust for bottom nav */
#main-content {
  flex: 1;
  padding: var(--space-lg);
  padding-bottom: calc(var(--space-lg) + 80px);
  max-width: 100%;
  margin: 0 auto;
  width: 100%;
  /* Prevent content overflow */
  overflow-x: hidden;
  overflow-y: auto;
  overflow-wrap: break-word;
  word-wrap: break-word;
  /* Constrain height to prevent excessive scrolling */
  min-height: 0;
}

/* Typography */
h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

h2 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text);
}

p {
  color: var(--color-text-secondary);
}

.subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* Screen wrapper */
.screen {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Screen Header Block */
.screen-header {
  text-align: center;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.screen-header h1 {
  margin-bottom: var(--space-xs);
}

.screen-header .subtitle {
  margin-bottom: 0;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 24px;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn svg,
.btn .icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Primary Button - ATM Yellow */
.btn-primary {
  background: var(--color-primary);
  color: var(--color-secondary);
  box-shadow: 0 2px 4px rgba(245, 182, 66, 0.3);
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
  box-shadow: 0 4px 12px rgba(245, 182, 66, 0.4);
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

/* Secondary Button */
.btn-secondary {
  background: var(--color-white);
  color: var(--color-text);
  border: 2px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--color-primary);
  background: var(--color-primary-lighter);
}

/* Ghost/Outline Button */
.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  padding: 12px 20px;
}

.btn-ghost:hover:not(:disabled) {
  background: var(--color-bg);
  color: var(--color-text);
}

/* Success Button */
.btn-success {
  background: var(--color-success);
  color: white;
}

.btn-success:hover:not(:disabled) {
  background: #16A34A;
}

/* Danger Button */
.btn-danger {
  background: #EF4444;
  color: white;
}

.btn-danger:hover:not(:disabled) {
  background: #DC2626;
}

/* Button Sizes */
.btn-sm {
  padding: 8px 16px;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-lg);
}

.btn-lg {
  padding: 18px 32px;
  font-size: var(--font-size-lg);
}

.btn-block {
  width: 100%;
}

/* Icon Button */
.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: var(--radius-xl);
}

/* ============================================
   Cards
   ============================================ */

.card {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  padding: var(--space-lg);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  border: 2px solid transparent;
}

.card-clickable {
  cursor: pointer;
}

.card-clickable:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.card-clickable.selected {
  border-color: var(--color-primary);
  background: var(--color-primary-lighter);
  box-shadow: 0 0 0 4px var(--color-primary-light);
}

.card-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  background: var(--color-primary-light);
  border-radius: var(--radius-xl);
  flex-shrink: 0;
}

.card-icon svg {
  width: 26px;
  height: 26px;
  color: var(--color-primary-dark);
}

.card-icon.accent {
  background: var(--color-accent-light);
}

.card-icon.accent svg {
  color: var(--color-accent);
}

.card-icon.success {
  background: var(--color-success-light);
}

.card-icon.success svg {
  color: var(--color-success);
}

.card-content {
  flex: 1;
  min-width: 0;
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.card-body {
  margin-top: var(--space-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.card-footer {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

.card-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  background: var(--color-bg);
  color: var(--color-text-secondary);
}

.card-badge.primary {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

/* ============================================
   Forms
   ============================================ */

.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.form-label .required {
  color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-white);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-fast);
  -webkit-appearance: none;
  appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-light);
}

.form-input::placeholder {
  color: var(--color-text-muted);
}

.form-input.error,
.form-select.error {
  border-color: var(--color-error);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 18px;
  padding-right: 44px;
  cursor: pointer;
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
  border-radius: var(--radius-xl);
}

.form-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
}

.form-error {
  font-size: var(--font-size-sm);
  color: var(--color-error);
  margin-top: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Form Row (two columns) */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Toggle Group (Modern Segmented Control)
   ============================================ */

.toggle-group {
  display: flex;
  background: var(--color-bg);
  border-radius: var(--radius-xl);
  padding: 4px;
  gap: 4px;
}

.toggle-option {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 16px 12px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.toggle-option:hover {
  color: var(--color-text);
  background: var(--color-white);
}

.toggle-option.active {
  background: var(--color-white);
  color: var(--color-text);
  box-shadow: var(--shadow-md);
}

.toggle-option svg {
  width: 22px;
  height: 22px;
}

.toggle-option .toggle-label {
  font-weight: 600;
}

.toggle-option .toggle-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: 400;
}

/* ============================================
   Chips / Pills
   ============================================ */

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.chip.selected {
  background: var(--color-primary);
  color: var(--color-secondary);
  border-color: var(--color-primary);
}

.chip.selected svg {
  color: var(--color-secondary);
}

.chip svg {
  width: 16px;
  height: 16px;
}

/* ============================================
   Info Tooltip
   ============================================ */

.info-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background: var(--color-bg);
  border-radius: var(--radius-full);
  cursor: help;
  position: relative;
  color: var(--color-text-muted);
  font-size: 12px;
  font-weight: 600;
}

.info-icon:hover {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
}

.tooltip {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  padding: 10px 14px;
  background: var(--color-secondary);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 400;
  border-radius: var(--radius-lg);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 100;
  max-width: 250px;
  white-space: normal;
  text-align: left;
  line-height: 1.4;
}

.tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: var(--color-secondary);
}

.info-icon:hover .tooltip {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   Utilities
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }

.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }
.text-success { color: var(--color-success); }
.text-error { color: var(--color-error); }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.w-full { width: 100%; }

.hidden { display: none !important; }

/* Divider */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-lg) 0;
}

.divider-text {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.divider-text::before,
.divider-text::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

/* ============================================
   Loading States
   ============================================ */

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 4px;
}

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

.loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  z-index: 1000;
}

.loading-text {
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ============================================
   Responsive (Base - Additional styles in responsive.css)
   ============================================ */

@media (max-width: 480px) {
  :root {
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.375rem;
  }
  
  #main-content {
    padding: var(--space-md);
  }
  
  .btn-lg {
    padding: 16px 24px;
  }
  
  .card {
    padding: var(--space-md);
  }
}