/**
 * BIOINTE - BASE STYLES
 * Reset, CSS Variables, Typography
 */

/* ==========================================
   CSS RESET
   ========================================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-page);
    overflow-x: hidden;
}

ul, ol {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* ==========================================
   CSS VARIABLES - NEW COLOR SCHEME
   Orange, Green, Purple Theme
   ========================================== */

:root {
    /* Brand Colors - Orange, Green, Purple */
    --primary-orange: #FF6B35;
    --primary-orange-dark: #E85A2A;
    --primary-orange-light: #FF8456;
    
    --primary-green: #00D9A3;
    --primary-green-dark: #00C092;
    --primary-green-light: #1AE3AE;
    
    --primary-purple: #8B5CF6;
    --primary-purple-dark: #7C3AED;
    --primary-purple-light: #A78BFA;
    
    /* Main Gradient - Orange to Purple */
    --gradient-primary: linear-gradient(135deg, #FF6B35 0%, #8B5CF6 100%);
    --gradient-secondary: linear-gradient(135deg, #00D9A3 0%, #8B5CF6 100%);
    --gradient-tertiary: linear-gradient(135deg, #FF6B35 0%, #00D9A3 100%);
    
    /* Success, Warning, Error */
    --success: #00D9A3;
    --success-light: #D1FAF0;
    --warning: #FF6B35;
    --warning-light: #FFE5DD;
    --error: #EF4444;
    --error-light: #FEE2E2;
    --info: #8B5CF6;
    --info-light: #EDE9FE;
    
    /* Text Colors */
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-tertiary: #9CA3AF;
    --text-inverse: #FFFFFF;
    
    /* Background Colors */
    --bg-page: #F9FAFB;
    --bg-card: #FFFFFF;
    --bg-hover: #F3F4F6;
    --bg-active: #E5E7EB;
    --bg-overlay: rgba(0, 0, 0, 0.5);
    
    /* Border Colors */
    --border-light: #E5E7EB;
    --border-medium: #D1D5DB;
    --border-dark: #9CA3AF;
    
    /* 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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Glow Effects */
    --glow-orange: 0 0 20px rgba(255, 107, 53, 0.4);
    --glow-green: 0 0 20px rgba(0, 217, 163, 0.4);
    --glow-purple: 0 0 20px rgba(139, 92, 246, 0.4);
    
    /* 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: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;
    --font-black: 900;
    
    /* Line Heights */
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;
}

/* Dark Mode */
[data-theme="dark"] {
    --text-primary: #F9FAFB;
    --text-secondary: #D1D5DB;
    --bg-page: #111827;
    --bg-card: #1F2937;
    --bg-hover: #374151;
    --border-light: #374151;
}

/* ==========================================
   TYPOGRAPHY
   ========================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

h1 {
    font-size: var(--text-5xl);
    font-weight: var(--font-extrabold);
}

h2 {
    font-size: var(--text-4xl);
}

h3 {
    font-size: var(--text-3xl);
}

h4 {
    font-size: var(--text-2xl);
}

h5 {
    font-size: var(--text-xl);
}

h6 {
    font-size: var(--text-lg);
}

p {
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */

.hidden { display: none !important; }
.block { display: block; }
.flex { display: flex; }
.grid { display: grid; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }

.bg-gradient-primary { background: var(--gradient-primary); }
.bg-gradient-secondary { background: var(--gradient-secondary); }

.rounded { border-radius: var(--radius-md); }
.rounded-full { border-radius: var(--radius-full); }

.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* ==========================================
   ANIMATIONS
   ========================================== */

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

.animate-fade { animation: fadeIn 0.3s ease; }
.animate-slide { animation: slideUp 0.5s ease; }
.animate-float { animation: float 3s ease-in-out infinite; }
.animate-pulse { animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }
.animate-spin { animation: spin 1s linear infinite; }

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-page);
}

::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-dark);
}

/* Selection */
::selection {
    background: var(--primary-purple-light);
    color: white;
}