/**
 * Base styles and design tokens
 * Material Design 3 inspired
 */

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

/* Design Tokens */
:root {
    /* Colors - Light Theme */
    --color-primary: #6750a4;
    --color-primary-container: #eaddff;
    --color-on-primary: #ffffff;
    --color-on-primary-container: #21005d;

    --color-secondary: #625b71;
    --color-secondary-container: #e8def8;
    --color-on-secondary: #ffffff;
    --color-on-secondary-container: #1d192b;

    --color-surface: #fffbfe;
    --color-surface-variant: #e7e0ec;
    --color-on-surface: #1c1b1f;
    --color-on-surface-variant: #49454f;

    --color-background: #fffbfe;
    --color-on-background: #1c1b1f;

    --color-outline: #79747e;
    --color-outline-variant: #cac4d0;

    --color-error: #b3261e;
    --color-on-error: #ffffff;

    /* Elevation Shadows */
    --elevation-1: 0 1px 2px rgba(0, 0, 0, 0.3), 0 1px 3px 1px rgba(0, 0, 0, 0.15);
    --elevation-2: 0 1px 2px rgba(0, 0, 0, 0.3), 0 2px 6px 2px rgba(0, 0, 0, 0.15);
    --elevation-3: 0 4px 8px 3px rgba(0, 0, 0, 0.15), 0 1px 3px rgba(0, 0, 0, 0.3);
    --elevation-4: 0 6px 10px 4px rgba(0, 0, 0, 0.15), 0 2px 3px rgba(0, 0, 0, 0.3);

    /* Spacing (8px base) */
    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-5: 40px;
    --space-6: 48px;

    /* Border Radius */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;

    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;

    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.25;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.75;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-index */
    --z-base: 1;
    --z-sidebar: 10;
    --z-toolbar: 20;
    --z-dialog: 100;
    --z-overlay: 90;
    --z-toast: 200;
}

/* Dark Theme */
[data-theme="dark"] {
    --color-primary: #d0bcff;
    --color-primary-container: #4f378b;
    --color-on-primary: #371e73;
    --color-on-primary-container: #eaddff;

    --color-secondary: #ccc2dc;
    --color-secondary-container: #4a4458;
    --color-on-secondary: #332d41;
    --color-on-secondary-container: #e8def8;

    --color-surface: #1c1b1f;
    --color-surface-variant: #49454f;
    --color-on-surface: #e6e1e5;
    --color-on-surface-variant: #cac4d0;

    --color-background: #1c1b1f;
    --color-on-background: #e6e1e5;

    --color-outline: #938f99;
    --color-outline-variant: #49454f;

    --color-error: #f2b8b5;
    --color-on-error: #601410;
}

/* Base Styles */
html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-on-background);
    background-color: var(--color-background);
    overflow: hidden;
}

/* Focus Styles */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Buttons */
button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

button:disabled {
    opacity: 0.38;
    cursor: not-allowed;
}

/* Inputs */
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

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

::-webkit-scrollbar-track {
    background: var(--color-surface-variant);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--color-on-surface-variant);
}

/* Loading Spinner */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-surface-variant);
    border-top-color: var(--color-primary);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}