s2f/frontend/app/globals.css

@import "tailwindcss";
@import "@fontsource/geist/400.css";
@import "@fontsource/geist/500.css";
@import "@fontsource/geist/600.css";
@import "@fontsource/geist/700.css";

@custom-variant dark (&:is(.dark *));

/* Liner Style Design System - Minimal, Clean, Refined */
:root {
  /* Colors - Light Mode - Soft & Clean */
  --background: 0 0% 99%;
  --foreground: 220 10% 15%;
  --card: 0 0% 100%;
  --card-foreground: 220 10% 15%;
  --popover: 0 0% 100%;
  --popover-foreground: 220 10% 15%;
  
  /* Primary - Subtle Blue */
  --primary: 217 91% 60%;
  --primary-foreground: 0 0% 100%;
  
  /* Secondary - Ultra Light Gray */
  --secondary: 220 14% 96%;
  --secondary-foreground: 220 10% 25%;
  
  /* Muted - Very Light */
  --muted: 220 14% 96%;
  --muted-foreground: 220 8% 46%;
  
  /* Accent - Soft Highlight */
  --accent: 217 91% 97%;
  --accent-foreground: 217 91% 40%;
  
  /* Destructive */
  --destructive: 0 84% 60%;
  --destructive-foreground: 0 0% 100%;
  
  /* Borders - Ultra Fine */
  --border: 220 13% 91%;
  --input: 220 13% 91%;
  --ring: 217 91% 60%;
  
  /* Radius - Larger, Softer */
  --radius: 0.625rem;
  
  /* Shadows - Minimal */
  --shadow: 0 1px 2px 0 hsl(220 14% 96%);
  --shadow-sm: 0 0px 0px 1px hsl(220 13% 91%);
  --shadow-md: 0 2px 4px 0 hsl(220 14% 96%);
  --shadow-lg: 0 4px 8px 0 hsl(220 14% 96%);
}

/* Dark Mode - Soft Dark */
.dark {
  --background: 220 20% 7%;
  --foreground: 220 14% 96%;
  --card: 220 18% 9%;
  --card-foreground: 220 14% 96%;
  --popover: 220 18% 9%;
  --popover-foreground: 220 14% 96%;
  
  --primary: 217 91% 65%;
  --primary-foreground: 220 20% 7%;
  
  --secondary: 220 18% 14%;
  --secondary-foreground: 220 14% 96%;
  
  --muted: 220 18% 14%;
  --muted-foreground: 220 8% 64%;
  
  --accent: 217 33% 20%;
  --accent-foreground: 217 91% 75%;
  
  --destructive: 0 62% 50%;
  --destructive-foreground: 0 0% 100%;
  
  --border: 220 18% 16%;
  --input: 220 18% 16%;
  --ring: 217 91% 65%;
  
  --shadow: 0 1px 2px 0 hsl(220 20% 4%);
  --shadow-sm: 0 0px 0px 1px hsl(220 18% 16%);
  --shadow-md: 0 2px 4px 0 hsl(220 20% 4%);
  --shadow-lg: 0 4px 8px 0 hsl(220 20% 4%);
}

/* Base Styles */
* {
  border-color: hsl(var(--border));
}

body {
  font-family: "Geist", system-ui, -apple-system, sans-serif;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

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

/* Selection */
::selection {
  background: hsl(var(--primary) / 0.15);
  color: hsl(var(--foreground));
}

/* Focus Visible */
:focus-visible {
  outline: 2px solid hsl(var(--ring) / 0.5);
  outline-offset: 2px;
  border-radius: calc(var(--radius) - 2px);
}

/* Scrollbar - Minimal */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: hsl(var(--border));
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: hsl(var(--muted-foreground) / 0.3);
}

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

@keyframes slideUp {
  from { 
    opacity: 0; 
    transform: translateY(6px);
  }
  to { 
    opacity: 1; 
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from { 
    opacity: 0; 
    transform: translateY(-6px);
  }
  to { 
    opacity: 1; 
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from { 
    opacity: 0; 
    transform: scale(0.97);
  }
  to { 
    opacity: 1; 
    transform: scale(1);
  }
}

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

/* Animation Classes */
.animate-fade-in {
  animation: fadeIn 0.2s ease-out forwards;
}

.animate-slide-up {
  animation: slideUp 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-slide-down {
  animation: slideDown 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-scale-in {
  animation: scaleIn 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-spin {
  animation: spin 0.8s linear infinite;
}

/* Staggered Animation */
.stagger-1 { animation-delay: 30ms; }
.stagger-2 { animation-delay: 60ms; }
.stagger-3 { animation-delay: 90ms; }
.stagger-4 { animation-delay: 120ms; }
.stagger-5 { animation-delay: 150ms; }

/* Transitions - Smooth */
.transition-base {
  transition: all 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}

.transition-smooth {
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Hover Effects - Subtle Lift */
.hover-lift {
  transition: transform 0.15s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}

.hover-lift:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.hover-scale {
  transition: transform 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}

.hover-scale:hover {
  transform: scale(1.01);
}

/* Button Press Effect */
.btn-press:active {
  transform: scale(0.98);
}

/* Glass Effect - Subtle */
.glass {
  background: hsl(var(--background) / 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Typography Scale */
.text-display {
  font-size: 3rem;
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.text-heading-1 {
  font-size: 2rem;
  line-height: 1.2;
  letter-spacing: -0.025em;
  font-weight: 600;
}

.text-heading-2 {
  font-size: 1.5rem;
  line-height: 1.3;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.text-heading-3 {
  font-size: 1.125rem;
  line-height: 1.4;
  letter-spacing: -0.01em;
  font-weight: 600;
}

.text-body {
  font-size: 0.9375rem;
  line-height: 1.6;
}

.text-body-small {
  font-size: 0.8125rem;
  line-height: 1.5;
}

.text-caption {
  font-size: 0.75rem;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

/* Liner-Style Card - Border only, no shadow */
.liner-card {
  border: 1px solid hsl(var(--border));
  background: hsl(var(--card));
  border-radius: var(--radius);
}

/* Liner-Style Button - Clean, minimal */
.liner-btn {
  background: hsl(var(--background));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  transition: all 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}

.liner-btn:hover {
  background: hsl(var(--accent));
  border-color: hsl(var(--accent-foreground) / 0.2);
}

.liner-btn:active {
  transform: scale(0.98);
}

/* Liner-Style Input */
.liner-input {
  background: hsl(var(--background));
  border: 1px solid hsl(var(--border));
  border-radius: var(--radius);
  transition: all 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}

.liner-input:focus {
  border-color: hsl(var(--ring));
  box-shadow: 0 0 0 3px hsl(var(--ring) / 0.1);
}

/* Liner-Style Badge */
.liner-badge {
  background: hsl(var(--accent));
  color: hsl(var(--accent-foreground));
  border: 1px solid transparent;
  border-radius: calc(var(--radius) - 2px);
  font-weight: 500;
  letter-spacing: -0.01em;
}

/* Liner-Style Table */
.liner-table {
  border-collapse: separate;
  border-spacing: 0;
}

.liner-table th {
  background: hsl(var(--muted));
  border-bottom: 1px solid hsl(var(--border));
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: hsl(var(--muted-foreground));
}

.liner-table td {
  border-bottom: 1px solid hsl(var(--border));
}

.liner-table tr:hover td {
  background: hsl(var(--accent));
}

/* Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, hsl(var(--primary)), hsl(var(--primary) / 0.8));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Subtle Divider */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, hsl(var(--border)), transparent);
}