:root{--accent: #007aff;--accent-hover: #0a84ff;--accent-pressed: #0066d6;--success: #34c759;--danger: #ff3b30;--warning: #ff9500;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 22px;--radius-pill: 999px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--sidebar-width: 252px;--content-max: 720px}:root[data-theme=dark]{color-scheme:dark;--bg: #0e0e0e;--bg-elevated: #1c1c1e;--bg-input: #2c2c2e;--bg-hover: #2c2c2e;--border: #333333;--border-input: #444444;--text: #ffffff;--text-body: #e6e6e6;--text-subtle: #8e8e93;--tabbar-bg: #1a1a1a;--tabbar-border: #333333;--drag-handle: #48484a;--shadow: 0 1px 0 rgba(255, 255, 255, .05) inset, 0 10px 28px rgba(0, 0, 0, .32);--shadow-lg: 0 28px 64px rgba(0, 0, 0, .48)}:root[data-theme=light]{color-scheme:light;--bg: #f5f5f7;--bg-elevated: #fafafa;--bg-input: #f8f8f8;--bg-hover: #ececf0;--border: 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var(--tabbar-border);box-shadow:0 -3px 4px #00000026}:root[data-theme=dark] .bottom-tabs{box-shadow:0 -3px 4px #0006}.bottom-tab{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:var(--text-subtle);font-size:12px;font-weight:700;letter-spacing:.3px}.mobile-app-bar .sidebar-brand{padding:0;font-size:16px}.bottom-tab:hover{text-decoration:none}.bottom-tab.active{color:var(--accent)}.main{padding:calc(76px + env(safe-area-inset-top)) var(--space-4) calc(96px + env(safe-area-inset-bottom))}.create-post-actions{position:sticky;bottom:calc(78px + env(safe-area-inset-bottom));z-index:15;background:var(--bg-elevated);padding-top:8px;padding-bottom:8px}.notification-panel{top:auto;bottom:calc(62px + env(safe-area-inset-bottom));left:var(--space-2);right:var(--space-2);width:auto;max-height:72vh;transform:none}}