:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: #475569;
    --border-light: #334155;
    --color-work: #22c55e;
    --color-work-bg: rgba(34, 197, 94, 0.15);
    --color-rest: #3b82f6;
    --color-rest-bg: rgba(59, 130, 246, 0.15);
    --color-prep: #f59e0b;
    --color-prep-bg: rgba(245, 158, 11, 0.15);
    --color-accent: #8b5cf6;
    --color-danger: #ef4444;
    --color-danger-bg: rgba(239, 68, 68, 0.1);
    --color-success: #22c55e;
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.4);
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;
    --transition: 0.2s ease;
}
[data-theme="light"] {
    --bg-primary: #f8fafc; --bg-secondary: #ffffff; --bg-tertiary: #e2e8f0;
    --text-primary: #0f172a; --text-secondary: #475569; --text-muted: #94a3b8;
    --border: #cbd5e1; --border-light: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05); --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
}
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-sans); background: var(--bg-primary); color: var(--text-primary); line-height: 1.6; min-height: 100vh; }
#app { min-height: 100vh; display: flex; flex-direction: column; }
.container { width: 100%; max-width: 600px; margin: 0 auto; padding: 0 var(--space-md); }
.page { padding-top: 60px; padding-bottom: 80px; flex: 1; }
h1,h2,h3,h4 { line-height: 1.2; font-weight: 700; }
h1 { font-size: 1.75rem; } h2 { font-size: 1.375rem; } h3 { font-size: 1.125rem; }
a { color: var(--color-accent); text-decoration: none; }
img { max-width: 100%; height: auto; }
.text-center { text-align: center; }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.mt-sm { margin-top: var(--space-sm); } .mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); } .mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); } .mb-md { margin-bottom: var(--space-md); }
.gap-sm { gap: var(--space-sm); } .gap-md { gap: var(--space-md); }
.flex { display: flex; } .flex-col { flex-direction: column; } .flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; } .justify-between { justify-content: space-between; }
.justify-center { justify-content: center; } .hidden { display: none !important; }
.empty-state { text-align: center; padding: var(--space-2xl) var(--space-md); color: var(--text-secondary); }
.empty-state .empty-icon { font-size: 3rem; margin-bottom: var(--space-md); opacity: 0.5; }
.empty-state p { margin-bottom: var(--space-md); }
.spinner { width: 32px; height: 32px; border: 3px solid var(--border); border-top-color: var(--color-accent); border-radius: 50%; animation: spin 0.8s linear infinite; margin: var(--space-xl) auto; }
@keyframes spin { to { transform: rotate(360deg); } }
::-webkit-scrollbar { width: 6px; } ::-webkit-scrollbar-track { background: transparent; } ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

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

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Small phones */
@media (max-width: 375px) {
    html { font-size: 14px; }
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.25rem; }
    .container { padding: 0 var(--space-sm); }
    .page-header h1 { font-size: 1.25rem; }
}

/* Landscape mode */
@media (orientation: landscape) and (max-height: 500px) {
    .navbar { height: 44px; }
    .page { padding-top: 48px; padding-bottom: 0; }
    .bottom-nav { display: none; }
}