/**
 * DENTIFY - Sistema de Diseño
 * CSS Principal - Variables y Reset
 */

/* ============================================
   VARIABLES CSS (Design Tokens)
   ============================================ */

:root {
    /* Colores Primarios */
    --primary-50: #EFF6FF;
    --primary-100: #DBEAFE;
    --primary-200: #BFDBFE;
    --primary-300: #93C5FD;
    --primary-400: #60A5FA;
    --primary-500: #3B82F6;
    --primary-600: #2563EB;
    --primary-700: #1D4ED8;
    --primary-800: #1E40AF;
    --primary-900: #1E3A8A;
    
    /* Colores Secundarios (Turquesa-Dental) */
    --secondary-50: #F0FDFA;
    --secondary-100: #CCFBF1;
    --secondary-500: #14B8A6;
    --secondary-600: #0D9488;
    --secondary-700: #0F766E;
    
    /* Colores de Estado */
    --success-50: #F0FDF4;
    --success-100: #DCFCE7;
    --success-500: #22C55E;
    --success-600: #16A34A;
    --success-700: #15803D;
    
    --warning-50: #FFFBEB;
    --warning-100: #FEF3C7;
    --warning-500: #F59E0B;
    --warning-600: #D97706;
    
    --error-50: #FEF2F2;
    --error-100: #FEE2E2;
    --error-500: #EF4444;
    --error-600: #DC2626;
    --error-700: #B91C1C;
    
    --info-50: #EFF6FF;
    --info-100: #DBEAFE;
    --info-500: #3B82F6;
    --info-600: #2563EB;
    
    /* Grises Neutros */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Fondos */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    
    /* Texto */
    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-tertiary: #6B7280;
    --text-muted: #9CA3AF;
    --text-inverse: #FFFFFF;
    
    /* Bordes */
    --border-light: #E5E7EB;
    --border-medium: #D1D5DB;
    --border-dark: #9CA3AF;
    
    /* Sombras */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    /* Tipografía */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --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;
    
    --font-regular: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    
    /* Espaciado */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;
    
    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    
    /* Z-Index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-toast: 800;
    
    /* Layout */
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 80px;
    --header-height: 64px;
}

/* ============================================
   RESET Y BASE
   ============================================ */

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary-600); text-decoration: none; }
a:hover { color: var(--primary-700); }

img, svg { display: block; max-width: 100%; }

input, button, textarea, select { font: inherit; }
button { cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
table { border-collapse: collapse; width: 100%; }

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-semibold);
    line-height: 1.25;
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }

@keyframes bounce-subtle {
    0%, 100% { transform: translate(-50%, 0); }
    50% { transform: translate(-50%, -10px); }
}

.animate-bounce-subtle {
    animation: bounce-subtle 3s infinite ease-in-out;
}