/* ===================================
   BulkReplaceTool - Main Stylesheet
   assets/css/style.css
   =================================== */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ===================================
   Root Variables
   =================================== */
:root {
  /* Colors */
  --primary-start: #667eea;
  --primary-end: #764ba2;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  
  /* Grays */
  --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;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  
  /* 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);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--gray-50);
  color: var(--gray-900);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.875rem; }
  h3 { font-size: 1.5rem; }
}

/* ===================================
   Utility Classes
   =================================== */

/* Gradients */
.gradient-text {
  background: linear-gradient(135deg, var(--primary-start) 0%, var(--primary-end) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-gradient {
  background: linear-gradient(135deg, var(--primary-start) 0%, var(--primary-end) 100%);
}

/* Glass Effect */
.glass-effect {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.glass-effect-dark {
  background: rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Background Pattern */
.bg-pattern {
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%239C92AC' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* ===================================
   Components
   =================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-start) 0%, var(--primary-end) 100%);
  color: white;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
  background: var(--gray-50);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--gray-700);
}

.btn-ghost:hover {
  background: var(--gray-100);
}

/* Cards */
.card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

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

/* Form Controls */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary-start);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-input-icon {
  position: relative;
}

.form-input-icon .icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
}

.form-input-icon input {
  padding-left: 2.75rem;
}

/* Dropzone */
.dropzone {
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--gray-50);
}

.dropzone:hover {
  border-color: var(--primary-start);
  background: white;
}

.dropzone.dragover {
  border-color: var(--primary-start);
  background: rgba(102, 126, 234, 0.05);
}

/* Progress Bar */
.progress {
  width: 100%;
  height: 0.5rem;
  background: var(--gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-start) 0%, var(--primary-end) 100%);
  transition: width var(--transition-base);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
}

.badge-primary {
  background: rgba(102, 126, 234, 0.1);
  color: var(--primary-start);
}

.badge-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.badge-danger {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

/* ===================================
   Animations
   =================================== */

/* Float Animation */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

.float-animation {
  animation: float 6s ease-in-out infinite;
}

/* Pulse Animation */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.pulse-animation {
  animation: pulse 2s ease-in-out infinite;
}

/* Slide In Animation */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide-in {
  animation: slideIn 0.3s ease-out;
}

/* Scale In Animation */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.scale-in {
  animation: scaleIn 0.3s ease-out;
}

/* Spin Animation */
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.spin {
  animation: spin 1s linear infinite;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: white;
  box-shadow: var(--shadow-md);
}

.nav-link {
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--primary-start);
}

.nav-link.active {
  color: var(--primary-start);
}

/* ===================================
   Layout Utilities
   =================================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.section {
  padding: 4rem 0;
}

@media (max-width: 768px) {
  .section {
    padding: 2rem 0;
  }
}

/* ===================================
   Pricing Card Special Styles
   =================================== */
.pricing-card {
  position: relative;
  background: white;
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
}

.pricing-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.pricing-card.recommended {
  border: 2px solid var(--primary-start);
}

.pricing-card.recommended::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-start) 0%, var(--primary-end) 100%);
  opacity: 0.05;
  border-radius: var(--radius-xl);
}

/* ===================================
   Dashboard Specific
   =================================== */
.stat-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

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

.activity-item {
  display: flex;
  align-items: center;
  padding: 1rem;
  background: var(--gray-50);
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
}

/* ===================================
   App Page Specific
   =================================== */
.log-container {
  background: var(--gray-900);
  color: var(--gray-300);
  font-family: 'Courier New', monospace;
  padding: 1rem;
  border-radius: var(--radius-md);
  height: 400px;
  overflow-y: auto;
  font-size: 0.875rem;
  line-height: 1.5;
}

.log-entry {
  margin-bottom: 0.5rem;
  animation: slideIn 0.3s ease-out;
}

.log-info { color: var(--gray-400); }
.log-success { color: var(--success); }
.log-warning { color: var(--warning); }
.log-error { color: var(--danger); }
.log-replace { color: var(--info); }

/* ===================================
   Responsive Utilities
   =================================== */
@media (max-width: 1024px) {
  .hide-lg { display: none !important; }
}

@media (max-width: 768px) {
  .hide-md { display: none !important; }
  
  .grid-md-1 {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 640px) {
  .hide-sm { display: none !important; }
}

/* ===================================
   Print Styles
   =================================== */
@media print {
  .no-print {
    display: none !important;
  }
  
  body {
    background: white;
    color: black;
  }
}