style.css

/*
 * Custom Design System & Aesthetics for MiniCPM AI SaaS MVP
 * Features: Dark mode, glassmorphism, vibrant gradients, micro-animations, and Inter font.
 */

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

:root {
  --bg-dark: #090a0f;
  --bg-card: rgba(18, 20, 32, 0.7);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --border-glass: rgba(255, 255, 255, 0.08);
  --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
  --secondary-gradient: linear-gradient(135deg, #3b82f6 0%, #10b981 100%);
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --accent-glow: rgba(168, 85, 247, 0.25);
}

/* Global Typography & Background */
body, .gradio-container {
  font-family: 'Inter', sans-serif !important;
  background-color: var(--bg-dark) !important;
  color: var(--text-main) !important;
  background-image: 
    radial-gradient(circle at 15% 20%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 85% 80%, rgba(236, 72, 153, 0.1) 0%, transparent 40%) !important;
  background-attachment: fixed !important;
}

h1, h2, h3, h4, .font-outfit {
  font-family: 'Outfit', sans-serif !important;
  letter-spacing: -0.02em !important;
}

/* Glassmorphism Containers */
.glass-panel, .gradio-container .form, .gradio-container .block {
  background: var(--bg-card) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
  border: 1px solid var(--border-glass) !important;
  border-radius: 16px !important;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37) !important;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.glass-panel:hover {
  border-color: rgba(168, 85, 247, 0.3) !important;
  box-shadow: 0 12px 40px 0 var(--accent-glow) !important;
}

/* Header Banner Styling */
.header-banner {
  text-align: center;
  padding: 2.5rem 1rem 1.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-glass);
}

.header-title {
  font-size: 2.75rem !important;
  font-weight: 700 !important;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.5rem !important;
}

.header-subtitle {
  font-size: 1.1rem !important;
  color: var(--text-muted) !important;
  max-width: 600px;
  margin: 0 auto !important;
}

/* Tabs Navigation */
.tabs > .tab-nav {
  display: flex !important;
  gap: 0.5rem !important;
  background: rgba(0, 0, 0, 0.2) !important;
  padding: 0.5rem !important;
  border-radius: 12px !important;
  border: 1px solid var(--border-glass) !important;
  margin-bottom: 1.5rem !important;
}

.tabs > .tab-nav > button {
  font-family: 'Outfit', sans-serif !important;
  font-weight: 500 !important;
  font-size: 1rem !important;
  padding: 0.75rem 1.5rem !important;
  border-radius: 10px !important;
  border: none !important;
  background: transparent !important;
  color: var(--text-muted) !important;
  transition: all 0.25s ease !important;
  cursor: pointer;
}

.tabs > .tab-nav > button:hover {
  color: var(--text-main) !important;
  background: rgba(255, 255, 255, 0.05) !important;
}

.tabs > .tab-nav > button.selected {
  background: var(--primary-gradient) !important;
  color: #ffffff !important;
  font-weight: 600 !important;
  box-shadow: 0 4px 15px rgba(168, 85, 247, 0.4) !important;
}

/* Buttons & Micro-animations */
button.primary, .pro-btn {
  background: var(--primary-gradient) !important;
  color: white !important;
  font-weight: 600 !important;
  border: none !important;
  border-radius: 12px !important;
  padding: 0.75rem 1.5rem !important;
  cursor: pointer !important;
  transition: transform 0.2s ease, box-shadow 0.2s ease !important;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3) !important;
}

button.primary:hover, .pro-btn:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 20px rgba(236, 72, 153, 0.5) !important;
}

button.primary:active, .pro-btn:active {
  transform: translateY(0) !important;
}

/* Pricing Cards */
.pricing-grid {
  display: flex;
  gap: 2rem;
  justify-content: center;
  align-items: stretch;
  flex-wrap: wrap;
  margin: 2rem 0;
}

.pricing-card {
  flex: 1;
  min-width: 280px;
  max-width: 380px;
  background: rgba(20, 22, 35, 0.8) !important;
  border: 1px solid var(--border-glass) !important;
  border-radius: 20px !important;
  padding: 2.5rem !important;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease !important;
}

.pricing-card.pro {
  border: 2px solid #a855f7 !important;
  box-shadow: 0 10px 40px rgba(168, 85, 247, 0.2) !important;
}

.pricing-card:hover {
  transform: translateY(-6px);
}

.pricing-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.pricing-price {
  font-size: 3rem;
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 1rem 0;
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  color: var(--text-muted);
  line-height: 2;
}

.pricing-features li::before {
  content: "✨ ";
  color: #a855f7;
}

/* Badges and Alerts */
.badge-free {
  background: rgba(156, 163, 175, 0.2);
  color: #e5e7eb;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-block;
}

.badge-pro {
  background: var(--primary-gradient);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-block;
  box-shadow: 0 0 10px rgba(236, 72, 153, 0.5);
}

/* Chatbot customization */
#chatbot {
  border-radius: 16px !important;
  border: 1px solid var(--border-glass) !important;
  background: rgba(10, 12, 20, 0.5) !important;
  min-height: 500px !important;
}