@import url(https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap);
/* AI PPT Generator - Professional Design System */

/* Import Inter font for professional typography - with fallback handling */

/* CSS Custom Properties - Professional Design System */
:root {
  /* Professional Color Palette */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --warning-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
  --error-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  
  /* Semantic Colors */
  --color-primary: #667eea;
  --color-primary-dark: #5a67d8;
  --color-primary-light: #7c8aed;
  --color-secondary: #764ba2;
  --color-success: #48bb78;
  --color-warning: #ed8936;
  --color-error: #f56565;
  --color-info: #4299e1;
  
  /* Glass Morphism Colors */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-bg-hover: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
  --glass-shadow-hover: 0 12px 40px rgba(31, 38, 135, 0.5);
  
  /* Typography System */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* Type Scale */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 1.875rem;  /* 30px */
  --text-4xl: 2.25rem;   /* 36px */
  --text-5xl: 3rem;      /* 48px */
  
  /* Line Heights */
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
  
  /* Spacing System (4px grid) */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  
  /* Border Radius */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-2xl: 1.5rem;   /* 24px */
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
  
  /* Animation System */
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-slower: 750ms;
  
  /* Easing Functions */
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-decelerate: cubic-bezier(0, 0, 0.2, 1);
  --ease-accelerate: cubic-bezier(0.4, 0, 1, 1);
  --ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  
  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
}

/* Global Reset and Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-family-primary);
  font-weight: var(--font-weight-normal);
  color: #1a202c;
  background: var(--primary-gradient);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Professional Typography Classes */
.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.text-3xl { font-size: var(--text-3xl); }
.text-4xl { font-size: var(--text-4xl); }
.text-5xl { font-size: var(--text-5xl); }

.font-light { font-weight: var(--font-weight-light); }
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }
.font-extrabold { font-weight: var(--font-weight-extrabold); }

.leading-tight { line-height: var(--leading-tight); }
.leading-snug { line-height: var(--leading-snug); }
.leading-normal { line-height: var(--leading-normal); }
.leading-relaxed { line-height: var(--leading-relaxed); }
.leading-loose { line-height: var(--leading-loose); }

/* Professional Glass Morphism Components */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--glass-shadow);
  transition: all var(--duration-normal) var(--ease-standard);
}

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

.glass-button {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family-primary);
  font-weight: var(--font-weight-medium);
  color: white;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.glass-button:hover {
  background: var(--glass-bg-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.glass-button:active {
  transform: translateY(0);
  transition-duration: var(--duration-fast);
}

/* Professional Input Styles */
.professional-input {
  width: 100%;
  padding: var(--space-4);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: white;
  font-family: var(--font-family-primary);
  font-size: var(--text-base);
  transition: all var(--duration-normal) var(--ease-standard);
}

.professional-input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.professional-input:focus {
  outline: none;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
  background: rgba(255, 255, 255, 0.15);
}

/* Professional Animation Classes */
.animate-fade-in {
  animation: fadeIn var(--duration-normal) var(--ease-standard);
}

.animate-slide-up {
  animation: slideUp var(--duration-normal) var(--ease-standard);
}

.animate-scale-in {
  animation: scaleIn var(--duration-normal) var(--ease-spring);
}

.animate-bounce-in {
  animation: bounceIn var(--duration-slow) var(--ease-spring);
}

/* Keyframe Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

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

@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* Utility Classes */
.hidden { display: none !important; }
.visible { display: block !important; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

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

.w-full { width: 100%; }
.h-full { height: 100%; }
.min-h-screen { min-height: 100vh; }

/* Responsive Breakpoints */
@media (max-width: 640px) {
  :root {
    --space-container: var(--space-4);
  }
}

@media (min-width: 641px) and (max-width: 1024px) {
  :root {
    --space-container: var(--space-6);
  }
}

@media (min-width: 1025px) {
  :root {
    --space-container: var(--space-8);
  }
}

/* Professional Focus Indicators */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Selection Styling */
::selection {
  background: rgba(102, 126, 234, 0.3);
  color: white;
}

::-moz-selection {
  background: rgba(102, 126, 234, 0.3);
  color: white;
}

/* AI PPT Generator - Advanced Architecture CSS */

/* Professional Dashboard Layout */
.professional-dashboard {
  display: grid;
  grid-template-areas: 
    "header header"
    "sidebar main"
    "status status";
  grid-template-columns: 350px 1fr;
  grid-template-rows: auto 1fr auto;
  gap: var(--space-6);
  padding: var(--space-6);
  min-height: 100vh;
  max-width: 1400px;
  margin: 0 auto;
}

.dashboard-header {
  grid-area: header;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--glass-shadow);
}

.dashboard-sidebar {
  grid-area: sidebar;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--glass-shadow);
  overflow-y: auto;
  max-height: calc(100vh - 200px);
}

.dashboard-main {
  grid-area: main;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--glass-shadow);
  overflow-y: auto;
  max-height: calc(100vh - 200px);
}

.dashboard-status {
  grid-area: status;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  box-shadow: var(--glass-shadow);
}

/* Professional Header Components */
.header-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
  color: white;
  margin-bottom: var(--space-2);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header-subtitle {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-normal);
  color: rgba(255, 255, 255, 0.8);
  line-height: var(--leading-relaxed);
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
}

.breadcrumb-separator {
  color: rgba(255, 255, 255, 0.4);
}

/* Enhanced Upload Area */
.professional-upload-area {
  border: 2px dashed var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
  text-align: center;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: all var(--duration-normal) var(--ease-standard);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.professional-upload-area:hover {
  border-color: var(--color-primary-light);
  background: var(--glass-bg-hover);
  transform: translateY(-2px);
  box-shadow: var(--glass-shadow-hover);
}

.professional-upload-area.drag-over {
  border-color: var(--color-primary);
  background: rgba(102, 126, 234, 0.1);
  transform: scale(1.02);
}

.upload-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4);
  opacity: 0.7;
  transition: all var(--duration-normal) var(--ease-standard);
}

.professional-upload-area:hover .upload-icon {
  opacity: 1;
  transform: scale(1.1);
}

.upload-text {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  color: white;
  margin-bottom: var(--space-2);
}

.upload-subtext {
  font-size: var(--text-base);
  color: rgba(255, 255, 255, 0.7);
  line-height: var(--leading-relaxed);
}

/* Professional Status Cards */
.status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.status-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--glass-shadow);
  transition: all var(--duration-normal) var(--ease-standard);
  cursor: pointer;
}

.status-card:hover {
  background: var(--glass-bg-hover);
  transform: translateY(-2px);
  box-shadow: var(--glass-shadow-hover);
}

.status-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.status-card-title {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  color: white;
}

.status-card-icon {
  width: 24px;
  height: 24px;
  opacity: 0.8;
}

.status-card-value {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
  color: white;
  margin-bottom: var(--space-2);
}

.status-card-description {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
  line-height: var(--leading-relaxed);
}

/* Professional Progress Indicators */
.progress-container {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  height: 8px;
  overflow: hidden;
  margin: var(--space-4) 0;
}

.progress-bar {
  height: 100%;
  background: var(--primary-gradient);
  border-radius: var(--radius-full);
  transition: width var(--duration-normal) var(--ease-standard);
  position: relative;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Professional Notification System */
.notification-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  max-width: 400px;
  pointer-events: none;
}

.notification {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-4);
  margin-bottom: var(--space-3);
  box-shadow: var(--glass-shadow);
  pointer-events: auto;
  transform: translateX(100%);
  animation: slideInRight var(--duration-normal) var(--ease-spring) forwards;
}

.notification.success {
  border-left: 4px solid var(--color-success);
}

.notification.error {
  border-left: 4px solid var(--color-error);
}

.notification.warning {
  border-left: 4px solid var(--color-warning);
}

.notification.info {
  border-left: 4px solid var(--color-info);
}

@keyframes slideInRight {
  to { transform: translateX(0); }
}

.notification-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2);
}

.notification-title {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: white;
}

.notification-close {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-standard);
}

.notification-close:hover {
  color: white;
  background: rgba(255, 255, 255, 0.1);
}

.notification-message {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.8);
  line-height: var(--leading-relaxed);
}

/* Professional Modal System */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  animation: fadeIn var(--duration-normal) var(--ease-standard);
}

.modal {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-2xl);
  max-width: 500px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  animation: scaleIn var(--duration-normal) var(--ease-spring);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--glass-border);
}

.modal-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  color: white;
}

.modal-close {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-lg);
  transition: all var(--duration-fast) var(--ease-standard);
  font-size: var(--text-xl);
}

.modal-close:hover {
  color: white;
  background: rgba(255, 255, 255, 0.1);
}

/* Professional Form Styles */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: white;
  margin-bottom: var(--space-2);
}

.form-error {
  font-size: var(--text-sm);
  color: var(--color-error);
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form-success {
  font-size: var(--text-sm);
  color: var(--color-success);
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Professional Button Variants */
.btn-primary {
  background: var(--primary-gradient);
  border: none;
  color: white;
  font-weight: var(--font-weight-semibold);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  text-decoration: none;
  font-family: var(--font-family-primary);
  font-size: var(--text-base);
}

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

.btn-primary:active {
  transform: translateY(0);
  transition-duration: var(--duration-fast);
}

.btn-secondary {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  color: white;
  font-weight: var(--font-weight-medium);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  text-decoration: none;
  font-family: var(--font-family-primary);
  font-size: var(--text-base);
}

.btn-secondary:hover {
  background: var(--glass-bg-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Professional Loading States */
.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top: 2px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-dots {
  display: inline-flex;
  gap: var(--space-1);
}

.loading-dot {
  width: 6px;
  height: 6px;
  background: white;
  border-radius: 50%;
  animation: pulse 1.4s ease-in-out infinite both;
}

.loading-dot:nth-child(1) { animation-delay: -0.32s; }
.loading-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes pulse {
  0%, 80%, 100% {
    transform: scale(0);
    opacity: 0.5;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .professional-dashboard {
    grid-template-areas: 
      "header"
      "main"
      "sidebar"
      "status";
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto auto;
    gap: var(--space-4);
    padding: var(--space-4);
  }
  
  .dashboard-sidebar,
  .dashboard-main {
    max-height: none;
  }
}

@media (max-width: 640px) {
  .professional-dashboard {
    padding: var(--space-3);
    gap: var(--space-3);
  }
  
  .dashboard-header,
  .dashboard-sidebar,
  .dashboard-main,
  .dashboard-status {
    padding: var(--space-4);
  }
  
  .status-grid {
    grid-template-columns: 1fr;
  }
  
  .notification-container {
    top: var(--space-4);
    right: var(--space-4);
    left: var(--space-4);
    max-width: none;
  }
  
  .modal {
    margin: var(--space-4);
    padding: var(--space-6);
  }
}