/* RohpoLabs Creative Colorful CSS Framework */

/* CSS Variables for Creative Color Palette */
:root {
  /* Primary Colors - Creative & Colorful */
  --primary-purple: #8B5CF6;
  --primary-purple-light: #A78BFA;
  --primary-purple-dark: #7C3AED;

  /* Secondary Colors */
  --secondary-blue: #3B82F6;
  --secondary-blue-light: #60A5FA;
  --secondary-blue-dark: #2563EB;

  /* Accent Colors */
  --accent-coral: #F43F5E;
  --accent-coral-light: #FB7185;
  --accent-coral-dark: #E11D48;

  --highlight-lime: #84CC16;
  --highlight-lime-light: #A3E635;
  --highlight-lime-dark: #65A30D;

  /* Neutral Colors */
  --neutral-50: #FAFAFA;
  --neutral-100: #F5F5F5;
  --neutral-200: #E5E5E5;
  --neutral-300: #D4D4D4;
  --neutral-400: #A3A3A3;
  --neutral-500: #737373;
  --neutral-600: #525252;
  --neutral-700: #404040;
  --neutral-800: #262626;
  --neutral-900: #171717;

  /* Typography */
  --font-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;

  /* 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: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 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), 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-colorful: 0 10px 15px -3px rgba(139, 92, 246, 0.2), 0 4px 6px -2px rgba(59, 130, 246, 0.1);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--neutral-800);
  background: linear-gradient(135deg, #fafafa 0%, #f5f5f5 100%);
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  background: linear-gradient(135deg, var(--primary-purple), var(--secondary-blue));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 2px 10px rgba(139, 92, 246, 0.1);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--neutral-900);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--neutral-800);
}

p {
  margin-bottom: var(--space-md);
  color: var(--neutral-600);
}

a {
  color: var(--primary-purple);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-purple-dark);
}

/* Creative Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-xl);
  font-weight: var(--font-weight-medium);
  font-size: 1rem;
  text-decoration: none;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-purple), var(--primary-purple-light));
  color: white;
  box-shadow: var(--shadow-colorful);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 20px -5px rgba(139, 92, 246, 0.3);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--secondary-blue), var(--secondary-blue-light));
  color: white;
  box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.2);
}

.btn-accent {
  background: linear-gradient(135deg, var(--accent-coral), var(--accent-coral-light));
  color: white;
  box-shadow: 0 10px 15px -3px rgba(244, 63, 94, 0.2);
}

.btn-highlight {
  background: linear-gradient(135deg, var(--highlight-lime), var(--highlight-lime-light));
  color: white;
  box-shadow: 0 10px 15px -3px rgba(132, 204, 22, 0.2);
}

/* Layout Components */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.flex {
  display: flex;
}

.flex-center {
  align-items: center;
  justify-content: center;
}

.flex-between {
  align-items: center;
  justify-content: space-between;
}

.flex-column {
  flex-direction: column;
}

/* Creative Cards */
.card {
  background: white;
  border-radius: var(--radius-2xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-purple), var(--secondary-blue), var(--accent-coral), var(--highlight-lime));
  animation: gradient-shift 3s ease-in-out infinite;
}

@keyframes gradient-shift {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(10px); }
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

/* Navigation Header */
.header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--neutral-200);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-link {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  background: linear-gradient(135deg, var(--primary-purple), var(--secondary-blue));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: all var(--transition-normal);
}

.logo-link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.logo {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  background: linear-gradient(135deg, var(--primary-purple), var(--secondary-blue));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
}

.nav-link {
  color: var(--neutral-600);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-purple), var(--secondary-blue));
  transition: width var(--transition-normal);
}

.nav-link:hover::after {
  width: 100%;
}

/* Hero Section */
.hero {
  padding: calc(100px + var(--space-3xl)) 0 var(--space-3xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.05) 0%, transparent 70%);
  animation: float 6s ease-in-out infinite;
}

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

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  margin-bottom: var(--space-lg);
  animation: fadeInUp var(--transition-slow) ease-out;
}

.hero-subtitle {
  font-size: clamp(1.2rem, 3vw, 1.5rem);
  color: var(--neutral-600);
  margin-bottom: var(--space-2xl);
  animation: fadeInUp var(--transition-slow) ease-out 0.2s both;
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp var(--transition-slow) ease-out 0.4s both;
}

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

/* Sections */
.section {
  padding: var(--space-3xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

/* App Cards */
.app-card {
  background: white;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
  position: relative;
}

.app-card-header {
  height: 200px;
  background: linear-gradient(135deg, var(--primary-purple), var(--secondary-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.app-card-header::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: rotate 10s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.app-card-content {
  padding: var(--space-xl);
}

.app-title {
  font-size: 1.5rem;
  color: var(--neutral-900);
  margin-bottom: var(--space-md);
}

.app-description {
  color: var(--neutral-600);
  margin-bottom: var(--space-lg);
}

.app-tags {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}

.tag {
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
}

.tag-purple {
  background: rgba(139, 92, 246, 0.1);
  color: var(--primary-purple);
}

.tag-blue {
  background: rgba(59, 130, 246, 0.1);
  color: var(--secondary-blue);
}

.tag-coral {
  background: rgba(244, 63, 94, 0.1);
  color: var(--accent-coral);
}

.tag-lime {
  background: rgba(132, 204, 22, 0.1);
  color: var(--highlight-lime);
}

/* Footer */
.footer {
  background: var(--neutral-900);
  color: white;
  padding: var(--space-3xl) 0 var(--space-xl);
  text-align: center;
}

.footer-content {
  margin-bottom: var(--space-xl);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.footer-link {
  color: var(--neutral-400);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--primary-purple-light);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.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); }
.mb-2xl { margin-bottom: var(--space-2xl); }

.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); }

.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }

.hidden { display: none; }
.visible { display: block; }

/* Responsive Design */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 300px;
  }

  .footer-links {
    flex-direction: column;
    gap: var(--space-md);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-sm);
  }

  .card {
    padding: var(--space-lg);
  }

  .section {
    padding: var(--space-2xl) 0;
  }
}