/* ===================================================================
   FastAppSpace - Main CSS File
   ================================================================== */

/* ===================================================================
   CSS Custom Properties (Variables)
   ================================================================== */
:root {
  /* Colors */
  --primary-color: #6e8efb;
  --secondary-color: #a777e3;
  --text-dark: #1f2937;
  --text-medium: #374151;
  --text-light: #6b7280;
  --text-lighter: #9ca3af;
  --background-white: #ffffff;
  --background-light: #f8fafc;
  --background-gray: #f3f4f6;
  --border-light: #e5e7eb;
  --error-color: #ef4444;
  --success-color: #10b981;
  --error-bg: #fef2f2;
  --success-bg: #f0fdf4;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6e8efb 0%, #a777e3 100%);
  --gradient-loading: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  
  /* Spacing */
  --container-max-width: 1280px;
  --border-radius: 0.375rem;
  --border-radius-lg: 0.5rem;
  --border-radius-full: 50%;
  
  /* Transitions */
  --transition-fast: 0.2s;
  --transition-normal: 0.3s;
  --transition-slow: 0.8s;
  --ease-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(.36,.07,.19,.97);
  
  /* Shadows */
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* ===================================================================
   Base Styles and Reset
   ================================================================== */
html {
  visibility: visible;
  opacity: 1;
  transition: opacity var(--transition-normal) ease-in;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  color: var(--text-dark);
  background-color: var(--background-white);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 600;
  line-height: 1.25;
}

p {
  margin: 0;
}

/* ===================================================================
   Layout Components
   ================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

/* ===================================================================
   Navigation Styles
   ================================================================== */
#navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--background-white);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal) ease;
}

.nav-scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
}

/* Mobile Navigation */
#mobile-menu {
  transition: all var(--transition-normal) ease-in-out;
  transform: translateY(-100%);
  opacity: 0;
  visibility: hidden;
  position: absolute;
  width: 100%;
  top: 100%;
  left: 0;
  z-index: 50;
}

#mobile-menu.active {
  transform: translateY(0);
  opacity: 1;
  visibility: visible;
}

.mobile-menu {
  transition: all var(--transition-normal) ease;
  max-height: 0;
  overflow: hidden;
}

.mobile-menu.active {
  max-height: 500px;
}

.mobile-nav-link.active {
  background-color: var(--background-gray);
  color: var(--primary-color);
}

/* ===================================================================
   Button Styles
   ================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: all var(--transition-fast);
}

/* ===================================================================
   Background Utilities
   ================================================================== */
.gradient-bg {
  background: var(--gradient-primary);
}

/* ===================================================================
   Form Styles
   ================================================================== */
.input-wrapper {
  position: relative;
  margin-bottom: 1.5rem;
}

.input-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--text-medium);
  transition: all var(--transition-normal) ease;
}

.input-wrapper:hover .input-label {
  color: var(--primary-color);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  padding-right: 2.5rem;
  border: 2px solid var(--border-light);
  border-radius: var(--border-radius-lg);
  background-color: var(--background-white);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-dark);
  transition: all var(--transition-normal) ease;
}

.form-input:hover {
  border-color: var(--secondary-color);
  box-shadow: 0 2px 4px rgba(167, 119, 227, 0.1);
}

.form-input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(110, 142, 251, 0.2);
  outline: none;
  transform: translateY(-1px);
}

.form-input.error {
  border-color: var(--error-color);
  background-color: var(--error-bg);
  animation: shake 0.5s var(--ease-bounce) both;
}

.form-input.success {
  border-color: var(--success-color);
  background-color: var(--success-bg);
}

textarea.form-input {
  min-height: 120px;
  resize: none;
}

/* Form Input Icons */
.input-icon {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-lighter);
  transition: all var(--transition-normal) ease;
}

.textarea-icon {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  color: var(--text-lighter);
  transition: all var(--transition-normal) ease;
}

.form-input:focus + .input-icon,
textarea.form-input:focus + .textarea-icon {
  color: var(--primary-color);
}

.form-input.error + .input-icon {
  color: var(--error-color);
}

.form-input.success + .input-icon {
  color: var(--success-color);
}

/* Form Validation Messages */
.input-helper {
  font-size: 0.875rem;
  color: var(--text-light);
  margin-top: 0.25rem;
}

.input-error, .error-message {
  font-size: 0.875rem;
  color: var(--error-color);
  margin-top: 0.25rem;
  display: none;
}

.input-error.show {
  display: block;
  animation: slideDown var(--transition-normal) ease-out;
}

.success-message {
  animation: slideIn 0.5s ease-out;
}

/* ===================================================================
   Card Components
   ================================================================== */
.app-card {
  transition: all var(--transition-normal) ease;
}

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

/* ===================================================================
   Mobile Mockup
   ================================================================== */
.mobile-mockup {
  position: relative;
  width: 300px;
  height: 600px;
  border: 12px solid #1a202c;
  border-radius: 40px;
  background: var(--background-light);
  box-shadow: var(--shadow-xl);
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  perspective: 1000;
  -webkit-perspective: 1000;
}

.mobile-mockup:before {
  content: '';
  position: absolute;
  width: 60%;
  height: 25px;
  background: #1a202c;
  border-radius: 0 0 20px 20px;
  left: 50%;
  transform: translateX(-50%);
  top: 0;
  -webkit-transform: translateX(-50%);
  z-index: 1;
}

.mobile-screen {
  width: 100%;
  height: 100%;
  overflow: hidden;
  border-radius: 28px;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  will-change: transform;
}

/* ===================================================================
   Scroll and Loading States
   ================================================================== */
/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: var(--secondary-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

/* Loading states */
.loading {
  opacity: 0;
  transition: opacity var(--transition-normal) ease-in;
}

.loaded {
  opacity: 1;
}

.image-loading {
  position: relative;
  background: var(--background-gray);
  overflow: hidden;
}

.image-loading::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-loading);
  animation: loading 1.5s infinite;
}

/* ===================================================================
   Accessibility and Navigation Helpers
   ================================================================== */
/* Skip to main content */
.skip-to-main {
  position: absolute;
  left: -9999px;
  z-index: 999;
  padding: 1em;
  background-color: var(--primary-color);
  color: white;
  text-decoration: none;
}

.skip-to-main:focus {
  left: 50%;
  transform: translateX(-50%);
}

/* Back to top button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--primary-color);
  color: white;
  width: 3rem;
  height: 3rem;
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-normal) ease;
  z-index: 1000;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: #5d7de9;
  transform: translateY(-3px);
}

/* ===================================================================
   Dropdown Components
   ================================================================== */
.legal-dropdown {
  transition: opacity var(--transition-fast) ease-in-out, transform var(--transition-fast) ease-in-out;
  transform-origin: top;
  opacity: 0;
  transform: scaleY(0);
  pointer-events: none;
}

.legal-dropdown.active {
  opacity: 1;
  transform: scaleY(1);
  pointer-events: auto;
}

.legal-dropdown a {
  transition: background-color var(--transition-fast) ease-in-out;
}

.legal-dropdown a:hover {
  background-color: var(--background-gray);
}

/* ===================================================================
   Animation Classes
   ================================================================== */
.animate-fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

/* Reveal animations */
.reveal {
  opacity: 0;
  transform: translate3d(0, 30px, 0);
  transition: all var(--transition-slow) var(--ease-out);
  -webkit-transform: translate3d(0, 30px, 0);
  -webkit-transition: all var(--transition-slow) var(--ease-out);
  will-change: transform, opacity;
}

.reveal.active {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  -webkit-transform: translate3d(0, 0, 0);
}

.reveal-left {
  opacity: 0;
  transform: translate3d(-50px, 0, 0);
  transition: all var(--transition-slow) var(--ease-out);
  -webkit-transform: translate3d(-50px, 0, 0);
  -webkit-transition: all var(--transition-slow) var(--ease-out);
  will-change: transform, opacity;
}

.reveal-left.active {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  -webkit-transform: translate3d(0, 0, 0);
}

.reveal-right {
  opacity: 0;
  transform: translate3d(50px, 0, 0);
  transition: all var(--transition-slow) var(--ease-out);
  -webkit-transform: translate3d(50px, 0, 0);
  -webkit-transition: all var(--transition-slow) var(--ease-out);
  will-change: transform, opacity;
}

.reveal-right.active {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  -webkit-transform: translate3d(0, 0, 0);
}

.reveal-scale {
  opacity: 0;
  transform: scale3d(0.9, 0.9, 1);
  transition: all var(--transition-slow) var(--ease-out);
  -webkit-transform: scale3d(0.9, 0.9, 1);
  -webkit-transition: all var(--transition-slow) var(--ease-out);
  will-change: transform, opacity;
}

.reveal-scale.active {
  opacity: 1;
  transform: scale3d(1, 1, 1);
  -webkit-transform: scale3d(1, 1, 1);
}

.reveal-delay-1 {
  transition-delay: 0.2s;
}

.reveal-delay-2 {
  transition-delay: 0.4s;
}

.reveal-delay-3 {
  transition-delay: 0.6s;
}

.reveal-initial {
  opacity: 0;
  transform: none;
  transition: none;
}

/* ===================================================================
   Utility Classes
   ================================================================== */
.hidden {
  display: none !important;
}

.flex {
  display: flex !important;
}

.items-center {
  align-items: center !important;
}

.justify-center {
  justify-content: center !important;
}

/* ===================================================================
   Keyframe Animations
   ================================================================== */
@keyframes fadeIn {
  from { 
    opacity: 0; 
    transform: translateY(20px); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0); 
  }
}

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

@keyframes shake {
  10%, 90% { transform: translate3d(-1px, 0, 0); }
  20%, 80% { transform: translate3d(2px, 0, 0); }
  30%, 50%, 70% { transform: translate3d(-4px, 0, 0); }
  40%, 60% { transform: translate3d(4px, 0, 0); }
}

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

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

/* ===================================================================
   Media Queries
   ================================================================== */
@media (max-width: 768px) {
  .mobile-mockup {
    width: 250px;
    height: 500px;
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
  }
}

@media (max-width: 1023px) {
  .nav-link {
    display: none;
  }
}

@media (min-width: 1024px) {
  #mobile-menu {
    display: none !important;
  }
  
  .mobile-menu-button {
    display: none !important;
  }

  .nav-link {
    display: inline-flex !important;
  }
  
  .lg\:block {
    display: block !important;
  }
}