:root {
    /* Primary colors - Slate/graphite neutral tone */
    --color-primary-50: #F8FAFC;
    --color-primary-100: #F1F5F9;
    --color-primary-200: #E2E8F0;
    --color-primary-300: #CBD5E1;
    --color-primary-400: #94A3B8;
    --color-primary-500: #64748B;
    --color-primary-600: #475569;
    --color-primary-700: #334155;
    --color-primary-800: #1E293B;
    --color-primary-900: #0F172A;
    --color-primary-950: #020617;

    /* Secondary colors - Warm stone/brown (subtle RPG accent) */
    --color-secondary-50: #FAFAF9;
    --color-secondary-100: #F5F5F4;
    --color-secondary-200: #E7E5E4;
    --color-secondary-300: #D6D3D1;
    --color-secondary-400: #A8A29E;
    --color-secondary-500: #78716C;
    --color-secondary-600: #57534E;
    --color-secondary-700: #44403C;
    --color-secondary-800: #292524;
    --color-secondary-900: #1C1917;
    --color-secondary-950: #0C0A09;

    /* Accent colors - Muted steel blue (restrained highlights) */
    --color-accent-50: #F0F5FA;
    --color-accent-100: #DAEAF5;
    --color-accent-200: #B8D4EA;
    --color-accent-300: #8FB9DC;
    --color-accent-400: #6B9CC8;
    --color-accent-500: #4B7FAF;
    --color-accent-600: #3D6792;
    --color-accent-700: #325375;
    --color-accent-800: #284058;
    --color-accent-900: #1E2F3E;
    --color-accent-950: #0F1821;

    /* Fonts */
    --font-family-primary: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-serif: 'Bookman Old Style', 'Book Antiqua', 'Palatino Linotype', Georgia, serif;

    /* UI semantic variables (used in TopBar and other components) */
    --cm-background: #F8F9FA;
    --cm-background-alpha: rgba(248, 249, 250, 0.95);
    --cm-text-foreground: #0f172a;
    --cm-border-color: #e2e8f0;
    --cm-border-color-hover: #cbd5e1;
    --cm-overlay: rgba(0, 0, 0, 0.5);
    
    /* Border radius */
    --cm-radius-md: 0.375rem;
    
    /* Shadows */
    --cm-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --cm-shadow-error: 0 4px 12px rgba(199, 29, 32, 0.25);
    
    /* Gradients - minimal, only for CTA buttons */
    --cm-gradient-primary: linear-gradient(135deg, var(--color-primary-700) 0%, var(--color-primary-800) 100%);
    --cm-gradient-error: linear-gradient(135deg, #A8191B 0%, #C71D20 100%);
}

/* Global resets */
*, *::before, *::after {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow-x: hidden;
}

body {
    font-family: var(--font-family-primary);
    color: var(--cm-text-foreground);
    background-color: var(--cm-background);
}

#app {
    width: 100%;
    overflow-x: hidden;
}

/* Typography - Optimized for space efficiency */
.cm-h1 {
    font-family: var(--font-family-serif);
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.025em;
    margin-bottom: 0.5rem;
    color: var(--color-primary-950);
}

.cm-h2 {
    font-family: var(--font-family-serif);
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.025em;
    margin-bottom: 0.375rem;
    color: var(--color-primary-950);
}

.cm-h3 {
    font-family: var(--font-family-serif);
    font-size: 1.875rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0.25rem;
    color: var(--color-primary-950);
}

.cm-h4 {
    font-family: var(--font-family-primary);
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0.25rem;
    color: var(--color-primary-950);
}

.cm-h5 {
    font-family: var(--font-family-primary);
    font-size: 1.25rem;
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: 0.125rem;
    color: var(--color-primary-950);
}

.cm-h6 {
    font-family: var(--font-family-primary);
    font-size: 1.125rem;
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: 0.125rem;
    color: var(--color-primary-950);
}

/* Responsive Typography - More compact on mobile */
@media screen and (max-width: 640px) {
    .cm-h1 { font-size: 2.25rem; margin-bottom: 0.375rem; }
    .cm-h2 { font-size: 1.875rem; margin-bottom: 0.25rem; }
    .cm-h3 { font-size: 1.5rem; margin-bottom: 0.125rem; }
    .cm-h4 { font-size: 1.25rem; margin-bottom: 0.125rem; }
    .cm-h5 { font-size: 1.125rem; margin-bottom: 0; }
    .cm-h6 { font-size: 1rem; margin-bottom: 0; }
}

/* Button base */
.cm-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 600;
    border-radius: 0.5rem;
    transition: all 200ms;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    cursor: pointer;
    border: none;
    /* default size: md */
    min-height: 44px;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

@media (min-width: 640px) {
    .cm-btn {
        padding: 0.5rem 1.25rem;
        font-size: 1rem;
    }
}

.cm-btn:disabled {
    background-color: #D1D5DB;
    color: #6B7280;
    cursor: not-allowed;
    opacity: 0.5;
    box-shadow: none;
}

/* Button sizes */
.cm-btn-sm {
    min-height: 36px;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
}

.cm-btn-lg {
    min-height: 52px;
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Button variants */
.cm-btn-primary {
    background-color: var(--color-primary-700);
    color: white;
}

.cm-btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-800);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.cm-btn-primary:active:not(:disabled) {
    background-color: var(--color-primary-900);
}

.cm-btn-secondary {
    background-color: #E5E7EB;
    color: #1F2937;
    border: 1px solid #D1D5DB;
}

.cm-btn-secondary:hover:not(:disabled) {
    background-color: #D1D5DB;
}

.cm-btn-secondary:active:not(:disabled) {
    background-color: #9CA3AF;
}

.cm-btn-success {
    background-color: var(--color-success-600, #16A34A);
    color: white;
}

.cm-btn-success:hover:not(:disabled) {
    background-color: var(--color-success-700, #15803D);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.cm-btn-success:active:not(:disabled) {
    background-color: var(--color-success-800, #166534);
}

.cm-btn-error {
    background-color: var(--color-error-600, #DC2626);
    color: white;
}

.cm-btn-error:hover:not(:disabled) {
    background-color: var(--color-error-700, #B91C1C);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.cm-btn-error:active:not(:disabled) {
    background-color: var(--color-error-800, #991B1B);
}

.cm-btn-warning {
    background-color: var(--color-warning-600, #D97706);
    color: white;
}

.cm-btn-warning:hover:not(:disabled) {
    background-color: var(--color-warning-700, #B45309);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.cm-btn-warning:active:not(:disabled) {
    background-color: var(--color-warning-800, #92400E);
}

.cm-btn-info {
    background-color: var(--color-accent-600);
    color: white;
}

.cm-btn-info:hover:not(:disabled) {
    background-color: var(--color-accent-700);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.cm-btn-info:active:not(:disabled) {
    background-color: var(--color-accent-800);
}

.cm-btn-outline-primary {
    background-color: transparent;
    color: var(--color-primary-700);
    border: 2px solid var(--color-primary-300);
}

.cm-btn-outline-primary:hover:not(:disabled) {
    color: var(--color-primary-900);
    background-color: var(--color-primary-50);
    border-color: var(--color-primary-400);
}

.cm-btn-outline-error {
    background-color: transparent;
    color: var(--color-error-600, #DC2626);
    border: 2px solid var(--color-error-200, #FECACA);
}

.cm-btn-outline-error:hover:not(:disabled) {
    color: var(--color-error-800, #991B1B);
    background-color: var(--color-error-50, #FEF2F2);
    border-color: var(--color-error-300, #FCA5A5);
}

/* Legacy text utility - used in some places */
.cm-text-body {
    color: #000000;
}