/* ========== VARIABLES CSS - SpotiTube ========== */
/* Archivo: public/css/variables.css */
/* Descripción: Variables globales de colores, espaciados, tipografía y efectos */

:root {
    /* === Colores de marca === */
    --spotify-green: #1db954;
    --spotify-green-hover: #1ed760;
    --spotify-green-dark: #169c46;
    --youtube-red: #ff0000;
    --youtube-red-hover: #cc0000;
    
    /* === Escala de grises === */
    --spotify-black: #191414;
    --spotify-dark-gray: #212121;
    --spotify-gray: #535353;
    --spotify-light-gray: #b3b3b3;
    --spotify-white: #ffffff;
    
    /* === Colores semánticos === */
    --error-color: #e22134;
    --success-color: #1db954;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    
    /* === Colores de texto === */
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #727272;
    
    /* === Fondos === */
    --bg-primary: #191414;
    --bg-secondary: #212121;
    --bg-tertiary: #282828;
    --bg-elevated: #333333;
    --bg-overlay: rgba(0, 0, 0, 0.8);
    
    /* === Bordes === */
    --border-radius: 12px;
    --border-radius-small: 8px;
    --border-radius-large: 16px;
    --border-radius-pill: 500px;
    
    /* === Transiciones === */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* === Sombras === */
    --shadow-small: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.2);
    --shadow-heavy: 0 8px 16px rgba(0, 0, 0, 0.3);
    --shadow-glow-green: 0 4px 20px rgba(29, 185, 84, 0.4);
    --shadow-glow-red: 0 4px 20px rgba(255, 0, 0, 0.4);
    
    /* === Z-index === */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-popover: 600;
    --z-tooltip: 700;
    --z-overlay: 800;
    --z-header: 900;
    --z-modal: 1000;
    
    /* === Espaciado === */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* === Tipografía === */
    --font-family: 'Circular', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    
    /* === Dimensiones de componentes === */
    --header-height: 64px;
    --footer-height: 60px;
    --sidebar-width: 280px;
    --max-content-width: 800px;
    --button-height: 48px;
    --input-height: 48px;
    --avatar-size: 50px;
    --logo-size-welcome: 459px;
    --logo-size-auth: 306px;
    --logo-size-main: 230px;
}

/* === Tema oscuro (por defecto) === */
[data-theme="dark"] {
    --bg-primary: #191414;
    --bg-secondary: #212121;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
}