/* ===== Modern Banking Design System ===== */
/* Copy this entire file and paste into: assets/css/modern-design.css */

:root {
  /* Primary Colors */
  --primary-900: #0A0E27;
  --primary-800: #141B3D;
  --primary-700: #1E2852;
  --primary-600: #283568;
  --primary-500: #3B4A7D;
  --primary-400: #5C6B9A;
  
  /* Accent Colors */
  --accent-500: #6366F1;
  --accent-400: #818CF8;
  --accent-300: #A5B4FC;
  --accent-gradient: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
  
  /* Neutrals */
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  
  /* Semantic Colors */
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --info: #3B82F6;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-display: 'Inter', var(--font-sans);
}

/* ===== Global Resets & Base Styles ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  color: var(--gray-800);
  background: var(--gray-50);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Modern Button System ===== */
.btn-modern {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.875rem 1.5rem;
  font-weight: 600;
  font-size: 0.9375rem;
  line-height: 1;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn-modern::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.4s, height 0.4s;
}

.btn-modern:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  background: white;
  color: var(--primary-700);
  border: 2px solid var(--gray-200);
}

.btn-secondary:hover {
  border-color: var(--accent-500);
  color: var(--accent-500);
  transform: translateY(-1px);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ===== Glass Card System ===== */
.glass-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  padding: var(--space-8);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl);
}

/* ===== Modern Input System ===== */
.input-group-modern {
  position: relative;
  margin-bottom: var(--space-6);
}

.input-group-modern label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: var(--space-2);
  letter-spacing: 0.01em;
}

.input-modern {
  width: 100%;
  padding: 0.875rem 1rem 0.875rem 3rem;
  font-size: 0.9375rem;
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  background: white;
  transition: all 0.2s ease;
  outline: none;
}

.input-modern:focus {
  border-color: var(--accent-500);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.input-icon {
  position: absolute;
  left: 1rem;
  top: 2.5rem;
  color: var(--gray-400);
  pointer-events: none;
}

/* ===== Hero Section ===== */
.hero-modern {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
  overflow: hidden;
}

.hero-modern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(118, 75, 162, 0.3) 0%, transparent 50%);
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

.hero-content {
  position: relative;
  z-index: 2;
}

/* ===== Feature Cards ===== */
.feature-card {
  background: white;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--accent-gradient);
  transform: scaleX(0);
  transition: transform 0.3s ease;
  transform-origin: left;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--accent-300);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-4);
  font-size: 1.75rem;
  color: var(--accent-500);
}

/* ===== Stats Section ===== */
.stat-item {
  text-align: center;
  padding: var(--space-6);
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  margin-bottom: var(--space-2);
}

.stat-label {
  color: var(--gray-600);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== Badge System ===== */
.badge-modern {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: white;
}

/* ===== Section Spacing ===== */
.section-modern {
  padding: 5rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-subtitle {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-500);
  margin-bottom: var(--space-3);
}

.section-heading {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.2;
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

/* ===== Responsive Utilities ===== */
@media (max-width: 768px) {
  .section-heading {
    font-size: 2rem;
  }
  
  .stat-number {
    font-size: 2.25rem;
  }
  
  .hero-modern {
    min-height: auto;
    padding: 4rem 0;
  }
}

/* ===== Form Container (for login/pin pages) ===== */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
  padding: var(--space-4);
  position: relative;
  overflow: hidden;
}

.auth-container::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  top: -250px;
  right: -250px;
  animation: float 6s ease-in-out infinite;
}

.auth-container::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  bottom: -200px;
  left: -200px;
  animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(20px); }
}

.auth-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-2xl);
  padding: var(--space-12);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
  width: 100%;
  max-width: 480px;
  position: relative;
  z-index: 1;
}

.auth-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.auth-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--space-2);
}

.auth-subtitle {
  color: var(--gray-600);
  font-size: 0.9375rem;
}

/* ===== Keypad Styling ===== */
.keypad-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin: var(--space-6) 0;
}

.keypad-btn {
  aspect-ratio: 1;
  border: 2px solid var(--gray-200);
  background: white;
  border-radius: var(--radius-lg);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-800);
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.keypad-btn:hover {
  background: var(--gray-50);
  border-color: var(--accent-500);
  transform: scale(1.05);
}

.keypad-btn:active {
  transform: scale(0.95);
}

.keypad-btn.special {
  background: var(--gray-100);
  color: var(--gray-600);
}

.keypad-btn.delete {
  background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
  color: white;
  border: none;
}

/* ===== User Profile Display ===== */
.user-profile-display {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--gray-50);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-6);
}

.user-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid white;
  box-shadow: var(--shadow-md);
}

.user-info h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-1);
}

.user-info p {
  font-size: 0.875rem;
  color: var(--gray-600);
  margin: 0;
}

/* ===== Input with Icon Styling ===== */
.input-with-icon {
  position: relative;
}

.input-with-icon input {
  padding-left: 3rem;
}

.input-with-icon .icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  pointer-events: none;
}

.toggle-password {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease;
}

.toggle-password:hover {
  color: var(--accent-500);
}

/* ===== PIN Display Dots ===== */
.pin-display {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin: 2rem 0;
}

.pin-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--gray-200);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.pin-dot.filled {
  background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
  transform: scale(1.2);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

/* ===== Modern Keypad ===== */
.keypad-modern {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  max-width: 320px;
  margin: 0 auto;
  padding: 1.5rem 0;
}

.keypad-button {
  aspect-ratio: 1;
  border: none;
  background: white;
  border-radius: 50%;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-800);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.keypad-button::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(99, 102, 241, 0.1);
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s;
}

.keypad-button:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.12);
}

.keypad-button:active {
  transform: scale(0.95);
}

.keypad-button:hover::before {
  width: 100%;
  height: 100%;
}

.keypad-button.special {
  background: var(--gray-100);
  color: var(--gray-600);
  font-size: 1.25rem;
}

.keypad-button.delete {
  background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
  color: white;
}

.keypad-button.delete:hover {
  box-shadow: 0 8px 16px rgba(239, 68, 68, 0.3);
}

/* ===== User Profile Card ===== */
.user-profile-card {
  background: white;
  border-radius: 1.5rem;
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.user-avatar-large {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  margin: 0 auto 1rem;
  display: block;
}

/* ===== Pulse Animation ===== */
@keyframes pulse-ring {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  100% {
    transform: scale(1.5);
    opacity: 0;
  }
}

.pulse-animation {
  position: relative;
}

.pulse-animation::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 3px solid var(--accent-500);
  transform: translate(-50%, -50%);
  animation: pulse-ring 1.5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

/* ===== Divider ===== */
.divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: 2rem 0;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--gray-200);
}

.divider span {
  padding: 0 1rem;
  color: var(--gray-500);
  font-size: 0.875rem;
  font-weight: 500;
}

/* ===== Help Link ===== */
.help-link {
  color: var(--accent-500);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
  transition: color 0.2s ease;
}

.help-link:hover {
  color: var(--accent-400);
  text-decoration: underline;
}

/* ===== Shake Animation ===== */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

.shake {
  animation: shake 0.3s ease;
}

/* ===== Security Badge ===== */
.security-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 999px;
  color: var(--success);
  font-size: 0.875rem;
  font-weight: 600;
  margin-top: 1rem;
}

/* ===== END OF CSS ===== */