:root {
    /* Primitive Color Tokens */
    --color-white: rgba(255, 255, 255, 1);
    --color-black: rgba(0, 0, 0, 1);
    --color-cream-50: rgba(252, 252, 249, 1);
    --color-cream-100: rgba(255, 255, 253, 1);
    --color-gray-200: rgba(245, 245, 245, 1);
    --color-gray-300: rgba(167, 169, 169, 1);
    --color-gray-400: rgba(119, 124, 124, 1);
    --color-slate-500: rgba(98, 108, 113, 1);
    --color-brown-600: rgba(94, 82, 64, 1);
    --color-charcoal-700: rgba(31, 33, 33, 1);
    --color-charcoal-800: rgba(38, 40, 40, 1);
    --color-slate-900: rgba(19, 52, 59, 1);
    --color-teal-300: rgba(50, 184, 198, 1);
    --color-teal-400: rgba(45, 166, 178, 1);
    --color-teal-500: rgba(33, 128, 141, 1);
    --color-teal-600: rgba(29, 116, 128, 1);
    --color-teal-700: rgba(26, 104, 115, 1);
    --color-teal-800: rgba(41, 150, 161, 1);
    --color-red-400: rgba(255, 84, 89, 1);
    --color-red-500: rgba(192, 21, 47, 1);
    --color-orange-400: rgba(230, 129, 97, 1);
    --color-orange-500: rgba(168, 75, 47, 1);

    /* RGB versions for opacity control */
    --color-brown-600-rgb: 94, 82, 64;
    --color-teal-500-rgb: 33, 128, 141;
    --color-slate-900-rgb: 19, 52, 59;
    --color-slate-500-rgb: 98, 108, 113;
    --color-red-500-rgb: 192, 21, 47;
    --color-red-400-rgb: 255, 84, 89;
    --color-orange-500-rgb: 168, 75, 47;
    --color-orange-400-rgb: 230, 129, 97;

    /* Background color tokens (Light Mode) */
    --color-bg-1: rgba(59, 130, 246, 0.08); /* Light blue */
    --color-bg-2: rgba(245, 158, 11, 0.08); /* Light yellow */
    --color-bg-3: rgba(34, 197, 94, 0.08); /* Light green */
    --color-bg-4: rgba(239, 68, 68, 0.08); /* Light red */
    --color-bg-5: rgba(147, 51, 234, 0.08); /* Light purple */
    --color-bg-6: rgba(249, 115, 22, 0.08); /* Light orange */
    --color-bg-7: rgba(236, 72, 153, 0.08); /* Light pink */
    --color-bg-8: rgba(6, 182, 212, 0.08); /* Light cyan */

    /* Semantic Color Tokens (Light Mode) */
    --color-background: var(--color-cream-50);
    --color-surface: var(--color-cream-100);
    --color-text: var(--color-slate-900);
    --color-text-secondary: var(--color-slate-500);
    --color-primary: var(--color-teal-500);
    --color-primary-hover: var(--color-teal-600);
    --color-primary-active: var(--color-teal-700);
    --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
    --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
    --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
    --color-border: rgba(var(--color-brown-600-rgb), 0.2);
    --color-btn-primary-text: var(--color-cream-50);
    --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
    --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
    --color-error: var(--color-red-500);
    --color-success: var(--color-teal-500);
    --color-warning: var(--color-orange-500);
    --color-info: var(--color-slate-500);
    --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
    --color-select-caret: rgba(var(--color-slate-900-rgb), 0.8);

    /* Common style patterns */
    --focus-ring: 0 0 0 3px var(--color-focus-ring);
    --focus-outline: 2px solid var(--color-primary);
    --status-bg-opacity: 0.15;
    --status-border-opacity: 0.25;
    --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

    /* RGB versions for opacity control */
    --color-success-rgb: 33, 128, 141;
    --color-error-rgb: 192, 21, 47;
    --color-warning-rgb: 168, 75, 47;
    --color-info-rgb: 98, 108, 113;

    /* Typography */
    --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo,
    Monaco, Consolas, monospace;
    --font-size-xs: 11px;
    --font-size-sm: 12px;
    --font-size-base: 14px;
    --font-size-md: 14px;
    --font-size-lg: 16px;
    --font-size-xl: 18px;
    --font-size-2xl: 20px;
    --font-size-3xl: 24px;
    --font-size-4xl: 30px;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 550;
    --font-weight-bold: 600;
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --letter-spacing-tight: -0.01em;

    /* Spacing */
    --space-0: 0;
    --space-1: 1px;
    --space-2: 2px;
    --space-4: 4px;
    --space-6: 6px;
    --space-8: 8px;
    --space-10: 10px;
    --space-12: 12px;
    --space-16: 16px;
    --space-20: 20px;
    --space-24: 24px;
    --space-32: 32px;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-base: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04),
    0 2px 4px -1px rgba(0, 0, 0, 0.02);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04),
    0 4px 6px -2px rgba(0, 0, 0, 0.02);
    --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.15),
    inset 0 -1px 0 rgba(0, 0, 0, 0.03);

    /* Animation */
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

    /* Layout */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
    :root {
        /* RGB versions for opacity control (Dark Mode) */
        --color-gray-400-rgb: 119, 124, 124;
        --color-teal-300-rgb: 50, 184, 198;
        --color-gray-300-rgb: 167, 169, 169;
        --color-gray-200-rgb: 245, 245, 245;

        /* Background color tokens (Dark Mode) */
        --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
        --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
        --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
        --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
        --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
        --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
        --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
        --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */

        /* Semantic Color Tokens (Dark Mode) */
        --color-background: var(--color-charcoal-700);
        --color-surface: var(--color-charcoal-800);
        --color-text: var(--color-gray-200);
        --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
        --color-primary: var(--color-teal-300);
        --color-primary-hover: var(--color-teal-400);
        --color-primary-active: var(--color-teal-800);
        --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
        --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
        --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
        --color-border: rgba(var(--color-gray-400-rgb), 0.3);
        --color-error: var(--color-red-400);
        --color-success: var(--color-teal-300);
        --color-warning: var(--color-orange-400);
        --color-info: var(--color-gray-300);
        --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
        --color-btn-primary-text: var(--color-slate-900);
        --color-card-border: rgba(var(--color-gray-400-rgb), 0.2);
        --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
        --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
        inset 0 -1px 0 rgba(0, 0, 0, 0.15);
        --button-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
        --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
        --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

        /* Common style patterns - updated for dark mode */
        --focus-ring: 0 0 0 3px var(--color-focus-ring);
        --focus-outline: 2px solid var(--color-primary);
        --status-bg-opacity: 0.15;
        --status-border-opacity: 0.25;
        --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
        --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

        /* RGB versions for dark mode */
        --color-success-rgb: var(--color-teal-300-rgb);
        --color-error-rgb: var(--color-red-400-rgb);
        --color-warning-rgb: var(--color-orange-400-rgb);
        --color-info-rgb: var(--color-gray-300-rgb);
    }
}

/* Data attribute for manual theme switching */
[data-color-scheme="dark"] {
    /* RGB versions for opacity control (dark mode) */
    --color-gray-400-rgb: 119, 124, 124;
    --color-teal-300-rgb: 50, 184, 198;
    --color-gray-300-rgb: 167, 169, 169;
    --color-gray-200-rgb: 245, 245, 245;

    /* Colorful background palette - Dark Mode */
    --color-bg-1: rgba(29, 78, 216, 0.15); /* Dark blue */
    --color-bg-2: rgba(180, 83, 9, 0.15); /* Dark yellow */
    --color-bg-3: rgba(21, 128, 61, 0.15); /* Dark green */
    --color-bg-4: rgba(185, 28, 28, 0.15); /* Dark red */
    --color-bg-5: rgba(107, 33, 168, 0.15); /* Dark purple */
    --color-bg-6: rgba(194, 65, 12, 0.15); /* Dark orange */
    --color-bg-7: rgba(190, 24, 93, 0.15); /* Dark pink */
    --color-bg-8: rgba(8, 145, 178, 0.15); /* Dark cyan */

    /* Semantic Color Tokens (Dark Mode) */
    --color-background: var(--color-charcoal-700);
    --color-surface: var(--color-charcoal-800);
    --color-text: var(--color-gray-200);
    --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
    --color-primary: var(--color-teal-300);
    --color-primary-hover: var(--color-teal-400);
    --color-primary-active: var(--color-teal-800);
    --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
    --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
    --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
    --color-border: rgba(var(--color-gray-400-rgb), 0.3);
    --color-error: var(--color-red-400);
    --color-success: var(--color-teal-300);
    --color-warning: var(--color-orange-400);
    --color-info: var(--color-gray-300);
    --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
    --color-btn-primary-text: var(--color-slate-900);
    --color-card-border: rgba(var(--color-gray-400-rgb), 0.15);
    --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
    --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.15);
    --color-border-secondary: rgba(var(--color-gray-400-rgb), 0.2);
    --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

    /* Common style patterns - updated for dark mode */
    --focus-ring: 0 0 0 3px var(--color-focus-ring);
    --focus-outline: 2px solid var(--color-primary);
    --status-bg-opacity: 0.15;
    --status-border-opacity: 0.25;
    --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

    /* RGB versions for dark mode */
    --color-success-rgb: var(--color-teal-300-rgb);
    --color-error-rgb: var(--color-red-400-rgb);
    --color-warning-rgb: var(--color-orange-400-rgb);
    --color-info-rgb: var(--color-gray-300-rgb);
}

[data-color-scheme="light"] {
    /* RGB versions for opacity control (light mode) */
    --color-brown-600-rgb: 94, 82, 64;
    --color-teal-500-rgb: 33, 128, 141;
    --color-slate-900-rgb: 19, 52, 59;

    /* Semantic Color Tokens (Light Mode) */
    --color-background: var(--color-cream-50);
    --color-surface: var(--color-cream-100);
    --color-text: var(--color-slate-900);
    --color-text-secondary: var(--color-slate-500);
    --color-primary: var(--color-teal-500);
    --color-primary-hover: var(--color-teal-600);
    --color-primary-active: var(--color-teal-700);
    --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
    --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
    --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
    --color-border: rgba(var(--color-brown-600-rgb), 0.2);
    --color-btn-primary-text: var(--color-cream-50);
    --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
    --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
    --color-error: var(--color-red-500);
    --color-success: var(--color-teal-500);
    --color-warning: var(--color-orange-500);
    --color-info: var(--color-slate-500);
    --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);

    /* RGB versions for light mode */
    --color-success-rgb: var(--color-teal-500-rgb);
    --color-error-rgb: var(--color-red-500-rgb);
    --color-warning-rgb: var(--color-orange-500-rgb);
    --color-info-rgb: var(--color-slate-500-rgb);
}

/* Base styles */
html {
    font-size: var(--font-size-base);
    font-family: var(--font-family-base);
    line-height: var(--line-height-normal);
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
}

*,
*::before,
*::after {
    box-sizing: inherit;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    margin: 0;
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    color: var(--color-text);
    letter-spacing: var(--letter-spacing-tight);
}

h1 {
    font-size: var(--font-size-4xl);
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

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

h5 {
    font-size: var(--font-size-lg);
}

h6 {
    font-size: var(--font-size-md);
}

p {
    margin: 0 0 var(--space-16) 0;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-standard);
}

a:hover {
    color: var(--color-primary-hover);
}

code,
pre {
    font-family: var(--font-family-mono);
    font-size: calc(var(--font-size-base) * 0.95);
    background-color: var(--color-secondary);
    border-radius: var(--radius-sm);
}

code {
    padding: var(--space-1) var(--space-4);
}

pre {
    padding: var(--space-16);
    margin: var(--space-16) 0;
    overflow: auto;
    border: 1px solid var(--color-border);
}

pre code {
    background: none;
    padding: 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-8) var(--space-16);
    border-radius: var(--radius-base);
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.5;
    cursor: pointer;
    transition: all var(--duration-normal) var(--ease-standard);
    border: none;
    text-decoration: none;
    position: relative;
}

.btn:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-btn-primary-text);
}

.btn--primary:hover {
    background: var(--color-primary-hover);
}

.btn--primary:active {
    background: var(--color-primary-active);
}

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

.btn--secondary:hover {
    background: var(--color-secondary-hover);
}

.btn--secondary:active {
    background: var(--color-secondary-active);
}

.btn--outline {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

.btn--outline:hover {
    background: var(--color-secondary);
}

.btn--sm {
    padding: var(--space-4) var(--space-12);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-sm);
}

.btn--lg {
    padding: var(--space-10) var(--space-20);
    font-size: var(--font-size-lg);
    border-radius: var(--radius-md);
}

.btn--full-width {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Form elements */
.form-control {
    display: block;
    width: 100%;
    padding: var(--space-8) var(--space-12);
    font-size: var(--font-size-md);
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    transition: border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

textarea.form-control {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
}

select.form-control {
    padding: var(--space-8) var(--space-12);
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: var(--select-caret-light);
    background-repeat: no-repeat;
    background-position: right var(--space-12) center;
    background-size: 16px;
    padding-right: var(--space-32);
}

/* Add a dark mode specific caret */
@media (prefers-color-scheme: dark) {
    select.form-control {
        background-image: var(--select-caret-dark);
    }
}

/* Also handle data-color-scheme */
[data-color-scheme="dark"] select.form-control {
    background-image: var(--select-caret-dark);
}

[data-color-scheme="light"] select.form-control {
    background-image: var(--select-caret-light);
}

.form-control:focus {
    border-color: var(--color-primary);
    outline: var(--focus-outline);
}

.form-label {
    display: block;
    margin-bottom: var(--space-8);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
}

.form-group {
    margin-bottom: var(--space-16);
}

/* Card component */
.card {
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-card-border);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--duration-normal) var(--ease-standard);
}

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

.card__body {
    padding: var(--space-16);
}

.card__header,
.card__footer {
    padding: var(--space-16);
    border-bottom: 1px solid var(--color-card-border-inner);
}

/* Status indicators - simplified with CSS variables */
.status {
    display: inline-flex;
    align-items: center;
    padding: var(--space-6) var(--space-12);
    border-radius: var(--radius-full);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
}

.status--success {
    background-color: rgba(
            var(--color-success-rgb, 33, 128, 141),
            var(--status-bg-opacity)
    );
    color: var(--color-success);
    border: 1px solid rgba(var(--color-success-rgb, 33, 128, 141), var(--status-border-opacity));
}

.status--error {
    background-color: rgba(
            var(--color-error-rgb, 192, 21, 47),
            var(--status-bg-opacity)
    );
    color: var(--color-error);
    border: 1px solid rgba(var(--color-error-rgb, 192, 21, 47), var(--status-border-opacity));
}

.status--warning {
    background-color: rgba(
            var(--color-warning-rgb, 168, 75, 47),
            var(--status-bg-opacity)
    );
    color: var(--color-warning);
    border: 1px solid rgba(var(--color-warning-rgb, 168, 75, 47), var(--status-border-opacity));
}

.status--info {
    background-color: rgba(
            var(--color-info-rgb, 98, 108, 113),
            var(--status-bg-opacity)
    );
    color: var(--color-info);
    border: 1px solid rgba(var(--color-info-rgb, 98, 108, 113), var(--status-border-opacity));
}

/* Container layout */
.container {
    width: 100%;
    margin-right: auto;
    margin-left: auto;
    padding-right: var(--space-16);
    padding-left: var(--space-16);
}

@media (min-width: 640px) {
    .container {
        max-width: var(--container-sm);
    }
}

@media (min-width: 768px) {
    .container {
        max-width: var(--container-md);
    }
}

@media (min-width: 1024px) {
    .container {
        max-width: var(--container-lg);
    }
}

@media (min-width: 1280px) {
    .container {
        max-width: var(--container-xl);
    }
}

/* Utility classes */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-4 {
    gap: var(--space-4);
}

.gap-8 {
    gap: var(--space-8);
}

.gap-16 {
    gap: var(--space-16);
}

.m-0 {
    margin: 0;
}

.mt-8 {
    margin-top: var(--space-8);
}

.mb-8 {
    margin-bottom: var(--space-8);
}

.mx-8 {
    margin-left: var(--space-8);
    margin-right: var(--space-8);
}

.my-8 {
    margin-top: var(--space-8);
    margin-bottom: var(--space-8);
}

.p-0 {
    padding: 0;
}

.py-8 {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
}

.px-8 {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
}

.py-16 {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
}

.px-16 {
    padding-left: var(--space-16);
    padding-right: var(--space-16);
}

.block {
    display: block;
}

.hidden {
    display: none;
}

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

:focus-visible {
    outline: var(--focus-outline);
    outline-offset: 2px;
}

/* Dark mode specifics */
[data-color-scheme="dark"] .btn--outline {
    border: 1px solid var(--color-border-secondary);
}

@font-face {
    font-family: 'FKGroteskNeue';
    src: url('https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2') format('woff2');
}

:root {
    /* Game-specific color overrides - dark theme only */
    --game-dark-bg: #1F1B2E;
    --game-darker-bg: #181527;
    --game-card-bg: #252140;
    --game-purple-primary: #8b5cf6;
    --game-purple-secondary: #7c3aed;
    --game-purple-dark: #6d28d9;
    --game-purple-darker: #5b21b6;
    --game-purple-light: #a78bfa;
    --game-text-primary: #ffffff;
    --game-text-secondary: #a1a1aa;
    --game-border: #404040;
    --game-border-light: #525252;

    /* Purple gradient definitions */
    --purple-gradient: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 50%, #6d28d9 100%);
    --purple-gradient-hover: linear-gradient(135deg, #9333ea 0%, #8b5cf6 50%, #7c3aed 100%);
    --purple-gradient-active: linear-gradient(135deg, #7c3aed 0%, #6d28d9 50%, #5b21b6 100%);

    /* Dark background gradients */
    --dark-bg-gradient: linear-gradient(135deg, #1F1B2E 0%, #181527 50%, #141020 100%);
    --dark-card-gradient: linear-gradient(135deg, #252140 0%, #201c35 50%, #1c182e 100%);
}

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    background: var(--game-dark-bg);
    color: var(--game-text-primary);
    font-family: var(--font-family-base);
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--dark-bg-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity var(--duration-normal) var(--ease-standard);
}

.loading-content {
    text-align: center;
    max-width: 400px;
    padding: var(--space-32);
    animation: fadeInUp 0.6s var(--ease-standard);
}

.loading-content h2 {
    margin-top: var(--space-24);
    margin-bottom: var(--space-12);
    color: var(--game-text-primary);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.loading-content p {
    color: var(--game-text-secondary);
    margin: 0;
    font-size: var(--font-size-lg);
}

/* Login Screen */
.login-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--dark-bg-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.login-content {
    text-align: center;
    max-width: 480px;
    padding: var(--space-32);
    animation: fadeInUp 0.6s var(--ease-standard);
}

.login-logo {
    width: 80px;
    height: 80px;
    margin-bottom: var(--space-24);
    border-radius: var(--radius-base);
    box-shadow: var(--shadow-md);
}

.login-title {
    margin-bottom: var(--space-20);
    color: var(--game-text-primary);
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    background: var(--purple-gradient);
    -webkit-background-clip: text;
    background-clip: text;
}

.login-description {
    color: var(--game-text-secondary);
    margin-bottom: var(--space-32);
    font-size: var(--font-size-lg);
    line-height: var(--line-height-normal);
}

/* Spinner Animation */
.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(139, 92, 246, 0.3);
    border-top: 4px solid var(--game-purple-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

.mini-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: var(--space-8);
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Main App */
.app {
    min-height: 100vh;
    position: relative;
    background: var(--dark-bg-gradient);
    animation: fadeIn 0.5s var(--ease-standard);
}

.background-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
    rgba(139, 92, 246, 0.05) 0%,
    rgba(31, 27, 46, 0.95) 30%,
    rgba(24, 21, 39, 1) 100%);
    z-index: 1;
}

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

/* Header */
.app-header {
    position: relative;
    z-index: 10;
    background: linear-gradient(135deg,
    rgba(37, 33, 64, 0.95) 0%,
    rgba(32, 28, 53, 0.98) 100%);
    backdrop-filter: blur(20px);
    border-bottom: 2px solid var(--game-border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-20) 0;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: var(--space-16);
}

.header-logo {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    transition: transform var(--duration-fast) var(--ease-standard);
}

.header-logo:hover {
    transform: scale(1.05);
}

.app-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--game-text-primary);
    margin: 0;
    letter-spacing: var(--letter-spacing-tight);
}

.user-section {
    display: flex;
    align-items: center;
    gap: var(--space-16);
}

.user-info {
    color: var(--game-text-secondary);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
}

/* Main Content - Perfect Mobile Centering */
.main-content {
    position: relative;
    z-index: 10;
    padding: var(--space-32) 0;
    min-height: calc(100vh - 100px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.content-card {
    width: 100%;
    max-width: 520px;
    margin: 0 auto;
    animation: slideIn 0.6s var(--ease-standard);
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-16);
    color: var(--game-text-primary);
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.section-description {
    text-align: center;
    color: var(--game-text-secondary);
    margin-bottom: var(--space-32);
    font-size: var(--font-size-lg);
    line-height: var(--line-height-normal);
}

/* Game-style Card */
.card {
    background: var(--dark-card-gradient);
    border-radius: var(--radius-lg);
    border: 2px solid var(--game-border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-standard);
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--purple-gradient);
    opacity: 0.6;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5),
    0 0 20px rgba(139, 92, 246, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
    border-color: var(--game-border-light);
}

.card__body {
    padding: var(--space-32);
}

/* Bonus Form */
.bonus-form {
    margin-bottom: var(--space-24);
}

.form-group {
    margin-bottom: var(--space-24);
}

.form-label {
    display: block;
    margin-bottom: var(--space-12);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-md);
    color: var(--game-text-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.form-control {
    width: 100%;
    box-sizing: border-box;
    font-size: var(--font-size-lg);
    padding: var(--space-16) var(--space-20);
    text-align: center;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: var(--font-weight-semibold);
    border: 2px solid var(--game-border);
    border-radius: var(--radius-md);
    background: var(--game-darker-bg);
    color: var(--game-text-primary);
    transition: all var(--duration-normal) var(--ease-standard);
    font-family: var(--font-family-mono);
}

.form-control:focus {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3),
    0 0 20px rgba(139, 92, 246, 0.4);
    border-color: var(--game-purple-primary);
    outline: none;
    background: var(--game-card-bg);
}

.form-control:hover {
    border-color: var(--game-purple-dark);
    box-shadow: 0 4px 15px rgba(109, 40, 217, 0.3);
}

.form-control::placeholder {
    text-transform: none;
    letter-spacing: normal;
    font-weight: var(--font-weight-normal);
    color: var(--game-text-secondary);
    font-family: var(--font-family-base);
}

.form-hint {
    margin-top: var(--space-8);
    font-size: var(--font-size-sm);
    color: var(--game-text-secondary);
    text-align: center;
}

/* Purple Gradient Buttons - Game Style (NO TEAL) */
.btn {
    position: relative;
    overflow: hidden;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-md);
    padding: var(--space-16) var(--space-24);
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all var(--duration-normal) var(--ease-standard);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    font-family: var(--font-family-base);
    box-sizing: border-box;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn--primary {
    background: var(--purple-gradient);
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    inset 0 -1px 0 rgba(0, 0, 0, 0.2);
}

.btn--primary:hover:not(:disabled) {
    background: var(--purple-gradient-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.6),
    0 0 20px rgba(139, 92, 246, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2),
    inset 0 -1px 0 rgba(0, 0, 0, 0.2);
}

.btn--primary:active:not(:disabled) {
    background: var(--purple-gradient-active);
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.4),
    inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.btn--outline {
    background: transparent;
    border: 2px solid var(--game-purple-primary);
    color: var(--game-purple-primary);
    box-shadow: 0 0 10px rgba(139, 92, 246, 0.3);
}

.btn--outline:hover:not(:disabled) {
    background: var(--purple-gradient);
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
    transform: translateY(-2px);
}

.btn--sm {
    padding: var(--space-8) var(--space-16);
    font-size: var(--font-size-sm);
    min-height: 36px;
    border-radius: var(--radius-base);
}

.btn--lg {
    padding: var(--space-20) var(--space-32);
    font-size: var(--font-size-xl);
    min-height: 56px;
    border-radius: var(--radius-lg);
}

.btn--full-width {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Button States */
.btn-text,
.btn-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--duration-fast);
}

.btn-spinner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Status Messages - Game Style (NO TEAL) */
.status-message {
    margin-top: var(--space-24);
    padding: var(--space-20);
    border-radius: var(--radius-lg);
    text-align: center;
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-lg);
    animation: slideIn 0.4s var(--ease-standard);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border: 2px solid transparent;
}

.status-message.success {
    background: linear-gradient(135deg,
    rgba(34, 197, 94, 0.2) 0%,
    rgba(21, 128, 61, 0.3) 100%);
    color: #4ade80;
    border-color: rgba(34, 197, 94, 0.4);
    box-shadow: 0 4px 20px rgba(34, 197, 94, 0.2);
}

.status-message.error {
    background: linear-gradient(135deg,
    rgba(239, 68, 68, 0.2) 0%,
    rgba(185, 28, 28, 0.3) 100%);
    color: #f87171;
    border-color: rgba(239, 68, 68, 0.4);
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.2);
}

/* Error Screen */
.error-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--dark-bg-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.error-content {
    text-align: center;
    max-width: 500px;
    padding: var(--space-32);
    animation: fadeInUp 0.6s var(--ease-standard);
}

.error-icon {
    font-size: 64px;
    margin-bottom: var(--space-20);
    animation: pulse 2s infinite;
    filter: drop-shadow(0 0 10px rgba(239, 68, 68, 0.5));
}

.error-content h2 {
    margin-bottom: var(--space-16);
    color: var(--game-text-primary);
    font-size: var(--font-size-3xl);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.error-content p {
    color: var(--game-text-secondary);
    margin-bottom: var(--space-32);
    font-size: var(--font-size-lg);
    line-height: var(--line-height-normal);
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.05);
    }
}

/* Perfect Mobile Responsiveness and Centering */
@media (max-width: 768px) {
    .main-content {
        min-height: calc(100vh - 80px);
        padding: var(--space-16) 0;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .header-content {
        flex-direction: column;
        gap: var(--space-16);
        text-align: center;
        padding: var(--space-16) 0;
    }

    .header-brand {
        flex-direction: column;
        gap: var(--space-12);
    }

    .user-section {
        flex-direction: column;
        gap: var(--space-12);
    }

    .content-card {
        margin: 0 var(--space-16);
        width: calc(100% - 2rem);
    }

    .app-title {
        font-size: var(--font-size-2xl);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .loading-content,
    .login-content,
    .error-content {
        padding: var(--space-24);
    }

    .login-title {
        font-size: var(--font-size-3xl);
    }

    .login-logo {
        width: 60px;
        height: 60px;
        margin-bottom: var(--space-20);
    }

    .header-logo {
        width: 32px;
        height: 32px;
    }
}

@media (max-width: 480px) {
    .container {
        padding-left: var(--space-12);
        padding-right: var(--space-12);
    }

    .main-content {
        min-height: calc(100vh - 70px);
        padding: var(--space-12) 0;
    }

    .content-card {
        margin: 0 var(--space-12);
        width: calc(100% - 1.5rem);
    }

    .card__body {
        padding: var(--space-24);
    }

    .form-control {
        font-size: var(--font-size-md);
        padding: var(--space-12) var(--space-16);
    }

    .btn--lg {
        padding: var(--space-16) var(--space-24);
        font-size: var(--font-size-lg);
    }

    .app-title {
        font-size: var(--font-size-xl);
    }

    .section-title {
        font-size: var(--font-size-xl);
    }

    .loading-content h2,
    .login-title {
        font-size: var(--font-size-2xl);
    }

    .header-brand {
        gap: var(--space-8);
    }

    .login-logo {
        width: 48px;
        height: 48px;
        margin-bottom: var(--space-16);
    }

    .header-logo {
        width: 28px;
        height: 28px;
    }

    .login-content,
    .loading-content,
    .error-content {
        padding: var(--space-20);
        width: calc(100% - 2rem);
        max-width: none;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

/* Enhanced animations and effects */
@keyframes successPulse {
    0% {
        transform: scale(1);
        box-shadow: 0 4px 20px rgba(34, 197, 94, 0.2);
    }
    50% {
        transform: scale(1.02);
        box-shadow: 0 6px 25px rgba(34, 197, 94, 0.4);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 4px 20px rgba(34, 197, 94, 0.2);
    }
}

.status-message.success {
    animation: slideIn 0.4s var(--ease-standard), successPulse 0.6s var(--ease-standard) 0.4s;
}

/* Focus styles for accessibility */
.btn:focus-visible,
.form-control:focus-visible {
    outline: 3px solid rgba(139, 92, 246, 0.5);
    outline-offset: 2px;
}

/* Game-like glow effects */
.card:hover::before {
    opacity: 1;
}

.btn--primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--duration-normal);
    pointer-events: none;
}

.btn--primary:hover::after {
    opacity: 1;
}

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

/* Ripple effect animation */
@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(4);
        opacity: 0;
    }
}